National Library of Energy BETA

Sample records for gary covatch digitally

  1. Gary Ward

    Broader source: Energy.gov [DOE]

    Gary Ward is the Director for American Affairs at the Office of International Affairs in the U.S. Department of Energy.

  2. Gary Brudvig | Photosynthetic Antenna Research Center

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

    Gary Brudvig Gary Brudvig Gary Brudvig Scientific Advisory Committee Member E-mail: gary.brudvig@yale.edu Website: Yale University Scientific Advisory Committee Member Dr....

  3. Jesse Gary | Department of Energy

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

    Jesse Gary About Us Jesse Gary - Solar Energy Technologies Program Most Recent $60 Million to Fund Projects Advancing Concentrating Solar Power November

  4. Gary M. Mignogna

    Broader source: Energy.gov [DOE]

    Gary Mignogna was appointed the President and Chief Executive Officer of AREVA Inc. on June 1, 2014. Mignogna (pronounced min-YO-nuh) served as the Vice President and U.S. regional deputy of...

  5. Gary Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Gary Wind Energy Project Jump to: navigation, search Name Gary Wind Energy Project Facility Gary Wind Energy Project Sector Wind energy Facility Type Small Scale Wind Facility...

  6. Gary Wiederrecht | Argonne National Laboratory

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

    Gary Samore About Us Gary Samore - Executive Director for Research, Belfer Center for Science and International Affairs at the Kennedy School of Government, Harvard University Gary Samore As of February 2013, Dr. Gary Samore is the Executive Director for Research at the Belfer Center for Science and International Affairs at the Kennedy School of Government at Harvard University. He is also a non-resident Senior Fellow at the Brookings Institution and member of the advisory board for United

  7. Gary Davis | Department of Energy

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

    Davis About Us Gary Davis - President & CEO - National Center for American Indian Enterprise Development (NCAIED) Gary Davis Gary "Litefoot" Davis is an enrolled member of the Cherokee Nation of Oklahoma. Before being appointed as President and CEO of the NCAIED, Mr. Davis served on the Board of Directors. He served as VP of Native Affairs for the Triple Five Group and he previously served as co-chair of the National Indian Gaming Association's, American Indian Business Network.

  8. Gary Drake | Argonne National Laboratory

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

    Gary Drake Senior Electronics Engineer, Group Leader Telephone (630) 252-1568 Fax (630) 252-5047 E-mail drake@anl.gov Projects Cosmic Gamma Rays

  9. SBOT OKLAHOMA SOUTHWESTERN POWER ADMIN POC Gary Bridges Telephone

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

    OKLAHOMA SOUTHWESTERN POWER ADMIN POC Gary Bridges Telephone (918) 595-6671 Email gary.bridges@swpa...

  10. Gary Calabrese > Corning Inc. > Scientific Advisory Board > The Energy

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

    Materials Center at Cornell Gary Calabrese Corning Inc

  11. National Nuclear Security Administration - Gary Lyttek | Department of

    Energy Savers [EERE]

    Energy Gary Lyttek National Nuclear Security Administration - Gary Lyttek Presented at the 15th Annual DOE Small Business Forum & Expo by: Gary Lyttek, Business Source Manager, National Nuclear Security Administration, U.S. DOE National Nuclear Security Administration - Gary Lyttek (6.18 MB) More Documents & Publications NNSA and Small Business Partnering for Success December 12, 2013 Business Opportunity Session Presentations Women-Owned Small Business Webinar, June 20, 2013

  12. Microsoft PowerPoint - 6_GARY_HIRSH_NMMSS_2014_Gary Hirsch_Monday11...

    National Nuclear Security Administration (NNSA)

    US Reporting to the IAEA Gary L. Hirsch, Link Technologies, Inc. Legal Basis Treaty on the Non-Proliferation of Nuclear Weapons (NPT) 1970 - Article iii.2, : Requires each ...

  13. Gary Mills | Savannah River Ecology Laboratory

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

    Mills Curriculum Vitae Faculty & Scientists SREL Home Gary Mills Savannah River Ecology Laboratory P O Drawer E, Aiken, SC 29802 (803) 725-5368 office (803) 725-3309 fax gmills(at)srel.uga.edu My research interest is in the biogeochemistry of aquatic ecosystems and my projects have included studies on stream, wetland, and estuarine systems as well as geothermal hot springs. My current research is focused on techniques for determining the bioavailable fraction of dissolved metals in wetland

  14. TBA-0069- In the Matter of Gary S. Vander Boegh

    Broader source: Energy.gov [DOE]

    This Decision considers three Appeals of an Initial Agency Decision (IAD) issued on July 11, 2003, involving a complaint filed by Gary S. Vander Boegh under the Department of Energy (DOE)...

  15. TBH-0007- In the Matter of Gary S. Vander Boegh

    Broader source: Energy.gov [DOE]

    This Initial Agency Decision involves a whistleblower complaint filed by Mr. Gary S. Vander Boegh (also referred to as the Complainant) under the Department of Energy (DOE) Contractor Employee...

  16. TBB-0069- In the Matter of Gary S. Vander Boegh

    Broader source: Energy.gov [DOE]

    This letter concerns the complaint of retaliation filed with the Department of Energy (DOE) under 10 C.F.R. Part 708 by Gary S. Vander Boegh (Vander Boegh). On February 5, 2008, the Office of...

  17. TBU-0049- In the Matter of Gary S. Vander Boegh

    Broader source: Energy.gov [DOE]

    Gary S. Vander Boegh (Vander Boegh or the complainant) appeals the dismissal of his February 21, 2006 complaint of retaliation filed under 10 C.F.R. Part 708, the Department of Energy (DOE)...

  18. VBU-0016- In the Matter of Gary Roybal

    Broader source: Energy.gov [DOE]

    On October 6, 1998, Gary Roybal (Roybal) filed a complaint under the Department of Energy (DOE) Contractor Employee Protection Program, codified at 10 C.F.R. Part 708. The regulations governing the...

  19. TBU-0007- In the Matter of Gary Vander Boegh

    Broader source: Energy.gov [DOE]

    Gary Vander Boegh (the Complainant), an employee of WESKEM LLC (WESKEM), appeals the dismissal of his complaint of retaliation filed under 10 C.F.R. Part 708, the Department of Energy (DOE)...

  20. Doing Business with NNSA Gary Lyttek - April 2016

    Office of Environmental Management (EM)

    Doing Business with the National Nuclear Security Administration Discovering Opportunities Gary Lyttek, Senior Business Source Manager 3 WHY AM I HERE? * Know little to nothing about NNSA * Opportunities/Money * Short attention Span * Who are the Panelists? * Let's get STARTED! 4 Doing Business with National Nuclear Security Administration 5 WHAT ARE YOU ABOUT? Our Mission: * Enhance national security through the military application of nuclear science. - Maintain Nuclear Stockpile -

  1. Microsoft PowerPoint - 3_GARY_HIRSH_NMMSS_2014_Gary Hirsch_Thursday 930-10.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Experience and Lessons Learned Associated with Transit Matching Gary L. Hirsch, Link Technologies, Inc. IAEA Reporting and Transit Matching - IAEA data processing * Each Inventory Change Report is loaded into the database * The IAEA's system attempts to match shipper/receiver data * Unmatched data is manually reviewed * The IAEA provides the US with a listing of unmatched data - Transit Matching * Performed on inventory changes which indicate increases, decreases or adjustments to nuclear

  2. Microsoft PowerPoint - 4_GARY_HIRSH_NMMSS_2014_Gary Hirsch_Monday 930-10.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Analysis and Feedback on NMMSS Performance Gary L. Hirsch, Link Technologies, Inc. NMMSS Performance Metrics  Processing Inventory Records  Processing Transaction Records  Processing Runs  Monthly Closures  NRC Licensee Reconciliations How Big is the User Community  DOE Facilities and Organizations - 74 Primary RIS Codes (0 new / 0 deactivated)  NRC Facilities and Organizations - 759 Primary RIS Codes (3 new / 1 deactivated)  International Organizations - 1541 Foreign RIS

  3. Microsoft PowerPoint - 6_GARY_HIRSH_NMMSS_2014_Gary Hirsch_Monday11-1120.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    US Reporting to the IAEA Gary L. Hirsch, Link Technologies, Inc. Legal Basis  Treaty on the Non-Proliferation of Nuclear Weapons (NPT) 1970 - Article iii.2, : Requires each State Party to the NPT not to provide source or special fissionable material, or equipment or materials especially designed or prepared for the processing, use or production of special fissionable material, to a NNWS for peaceful purposes unless the source or special fissionable material is subject to Agency safeguards. US

  4. Microsoft PowerPoint - 4_Gary_Wednesday 5-22 Transit Matching...

    National Nuclear Security Administration (NNSA)

    Matching Case Study Gary Hirsch, PSI Scenario 1 Australia 2 Scenario 1 Australia 3 Scenario 1 Australia 4 Scenario 2 Mexico 5 Scenario 2 Mexico 6 Scenario 2 Mexico 7 Scenario 3...

  5. TBB-0049 - In the Matter of Gary S. Vander Boegh | Department of Energy

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

    TBB-0049 - In the Matter of Gary S. Vander Boegh TBB-0049 - In the Matter of Gary S. Vander Boegh This letter concerns the complaint of retaliation that you filed with the Department of Energy (DOE) under 10 C.F.R. Part 708. On September 6, 2006, the Office of Hearings and Appeals (OHA) received your petition for Secretarial review of the August 3 jurisdictional appeal decision issued by the OHA Director. Under the Part 708 regulations, the Secretary will reverse or revise an appeal decision by

  6. Gary No. 13 blast furnace achieves 400 lbs/THM coal injection in 9 months

    SciTech Connect (OSTI)

    Sherman, G.J.; Schuett, K.J.; White, D.G.; O`Donnell, E.M.

    1995-12-01

    Number 13 Blast Furnace at Gary began injecting Pulverized Coal in March 1993. The injection level was increased over the next nine months until a level off 409 lbs/THM was achieved for the month of December 1993. Several major areas were critical in achieving this high level of Pulverized coal injection (PCI) including furnace conditions, lance position, tuyere blockage, operating philosophy, and outages. The paper discusses the modifications made to achieve this level of injection. This injection level decreased charged dry coke rate from 750 lbs/THM to about 625 lbs/THM, while eliminating 150 lbs/THM of oil and 20 lbs/THM of natural gas. Assuming a 1.3 replacement ratio for an oil/natural gas mixture, overall coke replacement for the coal is about 0.87 lbs coke/lbs coal. Gary Works anticipates levels of 500 lbs/THM are conceivable.

  7. Joint MiniBooNE, SciBooNE Disappearance Analysis Gary Cheng Warren Huelsnitz

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

    MiniBooNE, SciBooNE Disappearance Analysis Gary Cheng Warren Huelsnitz Columbia University Los Alamos National Lab Fermilab 31 Aug 2012 Friday, August 31, 2012 Acknowledgements * Teppei Katori * Joe Grange * Zarko Pavlovic * Kendall Mahn and Yasuhiro Nakajima 2 * Muon Neutrino CCQE Cross Section Analysis (Phys. Rev. D81, 092005 (2010)) * Neutrino Contamination in Antineutrino Mode (Phys. Rev. D84, 072005 (2011) and arXiv: 1107.5327) * Electron Neutrino (Antineutrino) Appearance (Phys. Rev. Lett.

  8. Gary Trott

    Energy Savers [EERE]

    ENTROPY Lighting Controls are not Simple "Simplicity is the ultimate sophistication." - Leonardo Da Vinci Lighting Controls - Switched Installation Commissioning fdfgfdg Layout...

  9. Microsoft PowerPoint - 4_Gary_Wednesday 5-22 Transit Matching Case Study.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Matching Case Study Gary Hirsch, PSI Scenario 1 Australia 2 Scenario 1 Australia 3 Scenario 1 Australia 4 Scenario 2 Mexico 5 Scenario 2 Mexico 6 Scenario 2 Mexico 7 Scenario 3 Great Britian 8 Scenario 3 Great Britian 9 Scenario 4 EURATOM 10 Scenario 4 EURATOM 11 US Response to IAEA 12 Transit Matching Case Study  Questions? 13

  10. Developing the digital safeguard that protects the National Spherical Torus

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

    Experiment-Upgrade at PPPL | Princeton Plasma Physics Lab Developing the digital safeguard that protects the National Spherical Torus Experiment-Upgrade at PPPL By John Greenwald February 22, 2016 Tweet Widget Google Plus One Share on Facebook Members of the team that developed the DCPS, from left: Gretchen Zimmer, Kevin Lamb, Greg Tchillingarian, Paul Sichta, John Lawson, Tim Stevenson, Stefan Gerhardt and Roman Rozenblat. Not shown: Vince Mastrocola, John Dong, Gary Gibilisco. (Photo by

  11. Developing the digital safeguard that protects the National Spherical Torus

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

    Experiment-Upgrade at PPPL | Princeton Plasma Physics Lab Developing the digital safeguard that protects the National Spherical Torus Experiment-Upgrade at PPPL By John Greenwald February 22, 2016 Tweet Widget Google Plus One Share on Facebook Members of the team that developed the DCPS, from left: Gretchen Zimmer, Kevin Lamb, Greg Tchillingarian, Paul Sichta, John Lawson, Tim Stevenson, Stefan Gerhardt and Roman Rozenblat. Not shown: Vince Mastrocola, John Dong, Gary Gibilisco. (Photo by

  12. Microsoft PowerPoint - 12_gary_Tuesday 5-21 Facility Performance.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Facility Reporting Analysis and Performance Gary L. Hirsch Project Lead  NMMSS is currently accepting data * Electronically o 80 Column o XML 1 o XML 2 * Paper / PDF 2  Reporting Statistics for 2012 * 179 facilities reporting in XML 2 (56%) * 5 facilities reporting in XML 1 (2%) * 22 facilities reporting in 80 col (7%) * 114 facilities reporting hardcopy input (35%) 3 ~ 65 % of reporting facilities are reporting electronically - This accounts for 97% of the transaction data 4 Reporting

  13. Microsoft PowerPoint - 3_Gary and Brian_Wednesday 5-22 Transit Matching.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Matching Brian Horn, NRC Gary Hirsch, PSI  What is Transit Matching - Defines IAEA activities to maintain information on the transit accounts of safeguarded nuclear material reported to the Agency. - It is performed on inventory changes which indicate increases, decreases and adjustments to nuclear material balances. - The IAEA receives 2 million nuclear material accounting records a year, in 2012 the US reported 5069 under the voluntary offer (INFCIRC/207) 2 US Documented 1,859 Exports to 23

  14. Microsoft PowerPoint - 7_GARY_LANGLIE_NMMSS 2014 NRC HEU Report Presentation 21April2014.pptx

    National Nuclear Security Administration (NNSA)

    Regulatory Commission Report to the U.S. Congress: High Enriched Uranium Gary Langlie, Nuclear Regulatory Commission Background  American Medical Isotopes Production Act of 2012 (AMIPA) - passed as part of the National Defense Authorization Act for FY13 (NDAA), which was signed into law on January 2, 2013  AMIPA's primary focus - to improve reliability of domestic medical isotope supplies without using high enriched uranium (HEU)* and to eventually eliminate HEU exports  Section 3175 of

  15. Microsoft PowerPoint - NRC Nuclear Export Controls Implementing the NSG Trigger List_Gary Langlie [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    U.S. NRC Nuclear Export Controls: Implementing the NSG Trigger List Gary R. Langlie Licensing Officer Office of International Programs May 11-14, 2015 NRC's Mission 2 License and regulate the Nation's civilian use of byproduct, source, and special nuclear materials to ensure adequate protection of public health and safety, promote the common defense and security, and protect the environment. Legal Basis * Atomic Energy Act of 1954, as amended * Nuclear Non-Proliferation Act of 1978 * Treaties,

  16. Gary Works No. 13 blast furnace: A new removable trough design

    SciTech Connect (OSTI)

    Schuett, K.J.; Pawlak, J.P.; Traina, L.; Brenneman, R.G.

    1995-12-01

    No. 13 Blast Furnace at US Steel`s Gary Works is a 35 tuyere furnace with a 36.5 ft. hearth capable of producing over 9,000 tons of hot metal per day. The current casthouse design was placed in service following the second reline in the fall of 1979. This design anticipated daily production rates averaging 7,500 tons of hot metal per day and provided for removable troughs at two of the three tapholes. At the time, the troughs were rammed with a high alumina/silicon carbide granular ramming material that provided the operators with trough campaign lives between 60,000--70,000 tons of hot metal produced. As refractory technology progressed, low cement/low moisture castables were introduced to the trough systems on No. 13 Blast Furnace. The immediate success of the castables was tempered by emergence of a new unexpected problem. That problem was the thermal expansion of the castable. The paper describes the problems that resulted in the need to modify the trough design, the new design of the trough, and its improvement in iron trough campaign life and reliability.

  17. Health hazard evaluation report HETA 92-0230-2471, USS/USX Gary Works, No. 2 Q-BOP Shop, Gry, Indiana

    SciTech Connect (OSTI)

    Kawamoto, M.M.; Kelly, J.E.

    1994-11-01

    In response to a confidential employee request, an investigation was begun into possible hazardous working conditions at the quick basic oxygen process (Q-BOP) shop at USS/USX Gary Works (SIC-3312), Gary, Indiana. The company was an integrated steel manufacturer where three major steel making processes were performed. Air contaminants, noise, heat stress, and ergonomic problems had been reported. Exposures to metals and sulfur-dioxide (7446095) were monitored. Confidential interviews were conducted with workers. The authors conclude that Q-BOP shop workers were potentially exposed to airborne irritants, noise, heat, and ergonomic risk factors. The authors recommend that measures be taken to reduce exposures, and to improve the health and safety of the workers.

  18. Microsoft PowerPoint - NMMSS Role in Preparing a New Facility for Reporting to the International Atomic Energy Agency_Gary Hirs

    National Nuclear Security Administration (NNSA)

    Role in Preparing a New Facility for Reporting to the International Atomic Energy Agency Gary Hirsch - NMMSS Purpose  This presentation covers the steps that NMMSS took to support the successful reporting to the IAEA by the U.S. Government for a new IAEA SELECT facility - LES owned and operated by URENCO USA  NMMSS reports import/export activity for ALL civilian nuclear materials to the IAEA  IAEA selected facilities have unique composition/facility code reporting requirements. 2

  19. Microsoft PowerPoint - Nuclear Material Import Export License … Uses & Reporting processes_Gary Langlie_Karen Antizzo [Compatib

    National Nuclear Security Administration (NNSA)

    Material Import/Export License - Uses & Reporting processes Gary Langlie - Nuclear Regulatory Commission Karen Antizzo - Link Technologies Overview  What is a Nuclear Regulatory Commission (NRC) import/export license? - Licenses for imports - Licenses for exports - Export license monitoring  Highlights of imports/exports in 2014 - Nuclear material imported to the U.S. - Nuclear material exported from the U.S. - Types of materials shipped - Typical uses and applications  What is

  20. Digital Sofcell Digital Ultracap joint venture | Open Energy...

    Open Energy Info (EERE)

    Ultracap joint venture Jump to: navigation, search Name: Digital Sofcell - Digital Ultracap joint venture Product: Digital Sofcell will joint venture with Digital Ultracap to...

  1. Gary Samore | Department of Energy

    Energy Savers [EERE]

    - a,- p^A CU ^ ^JL\ CC6p^ w b A GREENING DOE HEADQUARTERS Office of Management, November 2008 The DOE Headquarters Forrestal and Germantown buildings have award-winning energy conservation and environmental quality programs focused on making our buildings as green as possible and, enabling them to serve as showcases for the entire Department. Both the Forrestal and the Germantown facilities have earned EPA's Energy Star designation, ranking them among the nation's top buildings in terms of

  2. The Honorable Gary L. Willard

    Office of Legacy Management (LM)

    we are' p,Tease&-to forward'the enclosed information related to the.former Superior Steel Co. in yourjucisdi.ction that performed . work'for DOE's predecessor agencies. ...

  3. JGI Digital Scavenger Hunt

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

    JGI Digital Scavenger Hunt JGI Digital Scavenger Hunt The NERSC webpages are a great resource for New and Old users, so this is the first stop on the JGI Digital Scavenger Hunt....

  4. Digital Sensor Technology

    SciTech Connect (OSTI)

    Ted Quinn; Jerry Mauck; Richard Bockhorst; Ken Thomas

    2013-07-01

    The nuclear industry has been slow to incorporate digital sensor technology into nuclear plant designs due to concerns with digital qualification issues. However, the benefits of digital sensor technology for nuclear plant instrumentation are substantial in terms of accuracy, reliability, availability, and maintainability. This report demonstrates these benefits in direct comparisons of digital and analog sensor applications. It also addresses the qualification issues that must be addressed in the application of digital sensor technology.

  5. Digital Ultracap Corp formerly Digital Ultracap LLC | Open Energy...

    Open Energy Info (EERE)

    Ultracap Corp formerly Digital Ultracap LLC Jump to: navigation, search Name: Digital Ultracap Corp (formerly Digital Ultracap LLC) Place: Netherlands Product: Partnership between...

  6. Digital Sensor Technology

    SciTech Connect (OSTI)

    Thomas, Ken D.; Quinn, Edward L.; Mauck, Jerry L.; Bockhorst, Richard M.

    2015-02-01

    The nuclear industry has been slow to incorporate digital sensor technology into nuclear plant designs due to concerns with digital qualification issues. However, the benefits of digital sensor technology for nuclear plant instrumentation are substantial in terms of accuracy and reliability. This paper, which refers to a final report issued in 2013, demonstrates these benefits in direct comparisons of digital and analog sensor applications. Improved accuracy results from the superior operating characteristics of digital sensors. These include improvements in sensor accuracy and drift and other related parameters which reduce total loop uncertainty and thereby increase safety and operating margins. An example instrument loop uncertainty calculation for a pressure sensor application is presented to illustrate these improvements. This is a side-by-side comparison of the instrument loop uncertainty for both an analog and a digital sensor in the same pressure measurement application. Similarly, improved sensor reliability is illustrated with a sample calculation for determining the probability of failure on demand, an industry standard reliability measure. This looks at equivalent analog and digital temperature sensors to draw the comparison. The results confirm substantial reliability improvement with the digital sensor, due in large part to ability to continuously monitor the health of a digital sensor such that problems can be immediately identified and corrected. This greatly reduces the likelihood of a latent failure condition of the sensor at the time of a design basis event. Notwithstanding the benefits of digital sensors, there are certain qualification issues that are inherent with digital technology and these are described in the report. One major qualification impediment for digital sensor implementation is software common cause failure (SCCF).

  7. Digital rotation measurement unit

    DOE Patents [OSTI]

    Sanderson, S.N.

    1983-09-30

    A digital rotation indicator is disclosed for monitoring the position of a valve member having a movable actuator. The indicator utilizes mercury switches adapted to move in cooperation with the actuator. Each of the switches produces an output as it changes state when the actuator moves. A direction detection circuit is connected to the switches to produce a first digital signal indicative of the direction of rotation of the actuator. A count pulse generating circuit is also connected to the switches to produce a second digital pulse signal having count pulses corresponding to a change of state of any of the mercury switches. A reset pulse generating circuit is provided to generate a reset pulse each time a count pulse is generated. An up/down counter is connected to receive the first digital pulse signal and the second digital pulse signal and to count the pulses of the second digital pulse signal either up or down depending upon the instantaneous digital value of the first digital signal whereby a running count indicative of the movement of the actuator is maintained.

  8. Digital sonar system

    DOE Patents [OSTI]

    Young, Kenneth K.; Wilkes, R. Jeffrey

    1995-01-01

    A transponder of an active digital sonar system identifies a multifrequency underwater activating sonar signal received from a remote sonar transmitter. The transponder includes a transducer that receives acoustic waves, including the activating sonar signal, and generates an analog electrical receipt signal. The analog electrical receipt signal is converted to a digital receipt signal and cross-correlated with a digital transmission signal pattern corresponding to the activating sonar signal. A relative peak in the cross-correlation value is indicative of the activating sonar signal having been received by the transponder. In response to identifying the activating sonar signal, the transponder transmits a responding multifrequency sonar signal.

  9. Digital sonar system

    DOE Patents [OSTI]

    Young, K.K.; Wilkes, R.J.

    1995-11-21

    A transponder of an active digital sonar system identifies a multifrequency underwater activating sonar signal received from a remote sonar transmitter. The transponder includes a transducer that receives acoustic waves, including the activating sonar signal, and generates an analog electrical receipt signal. The analog electrical receipt signal is converted to a digital receipt signal and cross-correlated with a digital transmission signal pattern corresponding to the activating sonar signal. A relative peak in the cross-correlation value is indicative of the activating sonar signal having been received by the transponder. In response to identifying the activating sonar signal, the transponder transmits a responding multifrequency sonar signal. 4 figs.

  10. Fast transient digitizer

    DOE Patents [OSTI]

    Villa, Francesco

    1982-01-01

    Method and apparatus for sequentially scanning a plurality of target elements with an electron scanning beam modulated in accordance with variations in a high-frequency analog signal to provide discrete analog signal samples representative of successive portions of the analog signal; coupling the discrete analog signal samples from each of the target elements to a different one of a plurality of high speed storage devices; converting the discrete analog signal samples to equivalent digital signals; and storing the digital signals in a digital memory unit for subsequent measurement or display.

  11. JGI Digital Scavenger Hunt

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

    JGI Digital Scavenger Hunt JGI Digital Scavenger Hunt The NERSC webpages are a great resource for New and Old users, so this is the first stop on the JGI Digital Scavenger Hunt. Here is your first clue: 1) Log on to Genepool (ssh -Y genepool.nersc.gov) 2) Load the JAMO (dev) module (module load jamo/dev) 3) Run the following sequence of commands and answer the questions: genpool10: ~ $ jamo What is the third letter of the sixth jamo command in the help menu? genepool10: ~ $ jamo info What is the

  12. Digital ac monitor

    DOE Patents [OSTI]

    Hart, George W.; Kern, Jr., Edward C.

    1987-06-09

    An apparatus and method is provided for monitoring a plurality of analog ac circuits by sampling the voltage and current waveform in each circuit at predetermined intervals, converting the analog current and voltage samples to digital format, storing the digitized current and voltage samples and using the stored digitized current and voltage samples to calculate a variety of electrical parameters; some of which are derived from the stored samples. The non-derived quantities are repeatedly calculated and stored over many separate cycles then averaged. The derived quantities are then calculated at the end of an averaging period. This produces a more accurate reading, especially when averaging over a period in which the power varies over a wide dynamic range. Frequency is measured by timing three cycles of the voltage waveform using the upward zero crossover point as a starting point for a digital timer.

  13. Digital ac monitor

    DOE Patents [OSTI]

    Hart, G.W.; Kern, E.C. Jr.

    1987-06-09

    An apparatus and method is provided for monitoring a plurality of analog ac circuits by sampling the voltage and current waveform in each circuit at predetermined intervals, converting the analog current and voltage samples to digital format, storing the digitized current and voltage samples and using the stored digitized current and voltage samples to calculate a variety of electrical parameters; some of which are derived from the stored samples. The non-derived quantities are repeatedly calculated and stored over many separate cycles then averaged. The derived quantities are then calculated at the end of an averaging period. This produces a more accurate reading, especially when averaging over a period in which the power varies over a wide dynamic range. Frequency is measured by timing three cycles of the voltage waveform using the upward zero crossover point as a starting point for a digital timer. 24 figs.

  14. Energy Efficient Digital Networks

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

    and rising * About 7% of all U.S. electricity consumption -Much of this digitally networked already Our Future? Media room in high-end home Electronics are Different - Service ...

  15. Sloan digital sky survey

    SciTech Connect (OSTI)

    Kent, S.M.; Stoughton, C.; Newberg, H.; Loveday, J.; Petravick, D.; Gurbani, V.; Berman, E.; Sergey, G.; Lupton, R.

    1994-04-01

    The Sloan Digital Sky Survey will produce a detailed digital photometric map of half the northern sky to about 23 magnitude using a special purpose wide field 2.5 meter telescope. From this map we will select {approximately} 10{sup 6} galaxies and 10{sup 5} quasars, and obtain high resolution spectra using the same telescope. The imaging catalog will contain 10{sup 8} galaxies, a similar number of stars, and 10{sup 6} quasar candidates.

  16. Digital Actuator Technology

    SciTech Connect (OSTI)

    Ken Thomas; Ted Quinn; Jerry Mauck; Richard Bockhorst

    2014-09-01

    There are significant developments underway in new types of actuators for power plant active components. Many of these make use of digital technology to provide a wide array of benefits in performance of the actuators and in reduced burden to maintain them. These new product offerings have gained considerable acceptance in use in process plants. In addition, they have been used in conventional power generation very successfully. This technology has been proven to deliver the benefits promised and substantiate the claims of improved performance. The nuclear industry has been reluctant to incorporate digital actuator technology into nuclear plant designs due to concerns due to a number of concerns. These could be summarized as cost, regulatory uncertainty, and a certain comfort factor with legacy analog technology. The replacement opportunity for these types of components represents a decision point for whether to invest in more modern technology that would provide superior operational and maintenance benefits. Yet, the application of digital technology has been problematic for the nuclear industry, due to qualification and regulatory issues. With some notable exceptions, the result has been a continuing reluctance to undertake the risks and uncertainties of implementing digital actuator technology when replacement opportunities present themselves. Rather, utilities would typically prefer to accept the performance limitations of the legacy analog actuator technologies to avoid impacts to project costs and schedules. The purpose of this report is to demonstrate that the benefits of digital actuator technology can be significant in terms of plant performance and that it is worthwhile to address the barriers currently holding back the widespread development and use of this technology. It addresses two important objectives in pursuit of the beneficial use of digital actuator technology for nuclear power plants: 1. To demonstrate the benefits of digital actuator

  17. Digital field ion microscopy

    SciTech Connect (OSTI)

    Sijbrandij, S.J.; Russell, K.F.; Miller, M.K.; Thomson, R.C.

    1998-01-01

    Due to environmental concerns, there is a trend to avoid the use of chemicals needed to develop negatives and to process photographic paper, and to use digital technologies instead. Digital technology also offers the advantages that it is convenient, as it enables quick access to the end result, allows image storage and processing on computer, allows rapid hard copy output, and simplifies electronic publishing. Recently significant improvements have been made to the performance and cost of camera-sensors and printers. In this paper, field ion images recorded with two digital cameras of different resolution are compared to images recorded on standard 35 mm negative film. It should be noted that field ion images exhibit low light intensity and high contrast. Field ion images were recorded from a standard microchannel plate and a phosphor screen and had acceptance angles of {approximately} 60{degree}. Digital recordings were made with a Digital Vision Technologies (DVT) MICAM VHR1000 camera with a resolution of 752 x 582 pixels, and a Kodak DCS 460 digital camera with a resolution of 3,060 x 2,036 pixels. Film based recordings were made with Kodak T-MAX film rated at 400 ASA. The resolving power of T-MAX film, as specified by Kodak, is between 50 and 125 lines per mm, which corresponds to between 1,778 x 1,181 and 4,445 x 2,953 pixels, i.e. similar to that from the DCS 460 camera. The intensities of the images were sufficient to be recorded with standard fl:1.2 lenses with exposure times of less than 2 s. Many digital cameras were excluded from these experiments due to their lack of sensitivity or the inability to record a full frame image due to the fixed working distance defined by the vacuum system. The digital images were output on a Kodak Digital Science 8650 PS dye sublimation color printer (300 dpi). All field ion micrographs presented were obtained from a Ni-Al-Be specimen.

  18. Digital optical conversion module

    DOE Patents [OSTI]

    Kotter, Dale K.; Rankin, Richard A.

    1991-02-26

    A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer.

  19. Digital optical conversion module

    DOE Patents [OSTI]

    Kotter, D.K.; Rankin, R.A.

    1988-07-19

    A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer. 2 figs.

  20. Digital Image Correlation Engine

    SciTech Connect (OSTI)

    Turner, Dan; Crozier, Paul; Reu, Phil

    2015-10-06

    DICe is an open source digital image correlation (DIC) tool intended for use as a module in an external application or as a standalone analysis code. It's primary capability is computing full –field displacements and strains from sequences of digital These images are typically of a material sample undergoing a materials characterization experiment, but DICe is also useful for other applications (for example, trajectory tracking). DICe is machine portable (Windows, Linux and Mac) and can be effectively deployed on a high performance computing platform. Capabilities from DICe can be invoked through a library interface, via source code integration of DICe classes or through a graphical user interface.

  1. EERE Digital Data Management | Department of Energy

    Office of Environmental Management (EM)

    EERE Digital Data Management EERE Digital Data Management The Office of Energy Efficiency and Renewable Energy (EERE) Policy on Digital Data Management is part of the ...

  2. Digitally Marking RSA Moduli

    SciTech Connect (OSTI)

    Johnston, A.M.

    2000-10-09

    The moduli used in RSA (see [5]) can be generated by many different sources. The generator of that modulus (assuming a single entity generates the modulus) knows its factorization. They would have the ability to forge signatures or break any system based on this moduli. If a moduli and the RSA parameters associated with it were generated by a reputable source, the system would have higher value than if the parameters were generated by an unknown entity. So for tracking, security, confidence and financial reasons it would be beneficial to know who the generator of the RSA modulus was. This is where digital marking comes in. An RSA modulus ia digitally marked, or digitally trade marked, if the generator and other identifying features of the modulus (such as its intended user, the version number, etc.) can be identified and possibly verified by the modulus itself. The basic concept of digitally marking an RSA modulus would be to fix the upper bits of the modulus to this tag. Thus anyone who sees the public modulus can tell who generated the modulus and who the generator believes the intended user/owner of the modulus is.

  3. ELECTRONIC DIGITAL COMPUTER

    DOE Patents [OSTI]

    Stone, J.J. Jr.; Bettis, E.S.; Mann, E.R.

    1957-10-01

    The electronic digital computer is designed to solve systems involving a plurality of simultaneous linear equations. The computer can solve a system which converges rather rapidly when using Von Seidel's method of approximation and performs the summations required for solving for the unknown terms by a method of successive approximations.

  4. Metrological digital audio reconstruction

    DOE Patents [OSTI]

    Fadeyev; Vitaliy , Haber; Carl

    2004-02-19

    Audio information stored in the undulations of grooves in a medium such as a phonograph record may be reconstructed, with little or no contact, by measuring the groove shape using precision metrology methods coupled with digital image processing and numerical analysis. The effects of damage, wear, and contamination may be compensated, in many cases, through image processing and analysis methods. The speed and data handling capacity of available computing hardware make this approach practical. Two examples used a general purpose optical metrology system to study a 50 year old 78 r.p.m. phonograph record and a commercial confocal scanning probe to study a 1920's celluloid Edison cylinder. Comparisons are presented with stylus playback of the samples and with a digitally re-mastered version of an original magnetic recording. There is also a more extensive implementation of this approach, with dedicated hardware and software.

  5. Digital scale converter

    DOE Patents [OSTI]

    Upton, Richard G.

    1978-01-01

    A digital scale converter is provided for binary coded decimal (BCD) conversion. The converter may be programmed to convert a BCD value of a first scale to the equivalent value of a second scale according to a known ratio. The value to be converted is loaded into a first BCD counter and counted down to zero while a second BCD counter registers counts from zero or an offset value depending upon the conversion. Programmable rate multipliers are used to generate pulses at selected rates to the counters for the proper conversion ratio. The value present in the second counter at the time the first counter is counted to the zero count is the equivalent value of the second scale. This value may be read out and displayed on a conventional seven-segment digital display.

  6. Digital Image Correlation Engine

    Energy Science and Technology Software Center (OSTI)

    2015-10-06

    DICe is an open source digital image correlation (DIC) tool intended for use as a module in an external application or as a standalone analysis code. It's primary capability is computing full –field displacements and strains from sequences of digital These images are typically of a material sample undergoing a materials characterization experiment, but DICe is also useful for other applications (for example, trajectory tracking). DICe is machine portable (Windows, Linux and Mac) and canmore » be effectively deployed on a high performance computing platform. Capabilities from DICe can be invoked through a library interface, via source code integration of DICe classes or through a graphical user interface.« less

  7. DIGITAL Q METER

    DOE Patents [OSTI]

    Briscoe, W.L.

    1962-02-13

    A digital Q meter is described for measuring the Q of mechanical or electrical devices. The meter comprises in combination a transducer coupled to an input amplifier, and an upper and lower level discriminator coupled to the amplifier and having their outputs coupled to an anticoincidence gate. The output of the gate is connected to a scaler. The lower level discriminator is adjusted to a threshold level of 36.8 percent of the operating threshold level of the upper level discriminator. (AEC)

  8. DIGITAL ARCHITECTURE PROJECT PLAN

    SciTech Connect (OSTI)

    Thomas, Ken

    2014-09-01

    The objective of this project is to develop an industry consensus document on how to scope and implement the underlying information technology infrastructure that is needed to support a vast array of real-time digital technologies to improve NPP work efficiency, to reduce human error, to increase production reliability and to enhance nuclear safety. A consensus approach is needed because: • There is currently a wide disparity in nuclear utility perspectives and positions on what is prudent and regulatory-compliant for introducing certain digital technologies into the plant environment. For example, there is a variety of implementation policies throughout the industry concerning electromagnetic compatibility (EMC), cyber security, wireless communication coverage, mobile devices for workers, mobile technology in the control room, and so forth. • There is a need to effectively share among the nuclear operating companies the early experience with these technologies and other forms of lessons-learned. There is also the opportunity to take advantage of international experience with these technologies. • There is a need to provide the industry with a sense of what other companies are implementing, so that each respective company can factor this into their own development plans and position themselves to take advantage of new work methods as they are validated by the initial implementing companies. In the nuclear power industry, once a better work practice has been proven, there is a general expectation that the rest of the industry will adopt it. However, the long-lead time of information technology infrastructure could prove to be a delaying factor. A secondary objective of this effort is to provide a general understanding of the incremental investment that would be required to support the targeted digital technologies, in terms of an incremental investment over current infrastructure. This will be required for business cases to support the adoption of these new

  9. Digital Identities | Department of Energy

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

    Digital Identities Digital Identities banner-957163_960_720.jpg Public Key Infrastructure (PKI) is a comprehensive system that provides public-key encryption and digital signature services: Authentication - Uniquely identifies the information originator and consumer Confidentiality or Privacy - Assures information and data are protected from unauthorized access Data integrity - Assures data has not been accidentally or deliberately altered Non-Repudiation - Provides proof of the integrity and

  10. Stored program digital process controller

    DOE Patents [OSTI]

    Stephenson, Dwight L.

    1977-01-04

    A digital process control function generator wherein a timing clock, in conjunction with programmable read only memories controls variables in a process with respect to time.

  11. Digital Lumens | Open Energy Information

    Open Energy Info (EERE)

    Lumens Jump to: navigation, search Name: Digital Lumens Address: 110 Canal Street Place: Boston, Massachusetts Zip: 02114 Region: Greater Boston Area Product: Intelligent Lighting...

  12. Microsoft PowerPoint - 4_GARY_HIRSH_NMMSS_2014_Gary Hirsch_Monday...

    National Nuclear Security Administration (NNSA)

    Nuclear Regulatory Commission International Transaction Activity Exports to 23 countries Imports from 19 countries Inventory MBR Activity NMMSS received and processed ...

  13. Microsoft PowerPoint - 3_GARY_HIRSH_NMMSS_2014_Gary Hirsch_Thursday...

    National Nuclear Security Administration (NNSA)

    resolved items - Look at newer activity first - Look at Plutonium, Enriched Uranium, Thorium, Depleted Uranium, Natural Uranium - Look at larger quantities of material first ...

  14. Digital quadrature phase detection

    DOE Patents [OSTI]

    Smith, James A.; Johnson, John A.

    1992-01-01

    A system for detecting the phase of a frequency of phase modulated signal that includes digital quadrature sampling of the frequency or phase modulated signal at two times that are one quarter of a cycle of a reference signal apart, determination of the arctangent of the ratio of a first sampling of the frequency or phase modulated signal to the second sampling of the frequency or phase modulated signal, and a determination of quadrant in which the phase determination is increased by 2.pi. when the quadrant changes from the first quadrant to the fourth quadrant and decreased by 2.pi. when the quadrant changes from the fourth quadrant to the first quadrant whereby the absolute phase of the frequency or phase modulated signal can be determined using an arbitrary reference convention.

  15. Digital quadrature phase detection

    DOE Patents [OSTI]

    Smith, J.A.; Johnson, J.A.

    1992-05-26

    A system for detecting the phase of a frequency or phase modulated signal that includes digital quadrature sampling of the frequency or phase modulated signal at two times that are one quarter of a cycle of a reference signal apart, determination of the arctangent of the ratio of a first sampling of the frequency or phase modulated signal to the second sampling of the frequency or phase modulated signal, and a determination of quadrant in which the phase determination is increased by 2[pi] when the quadrant changes from the first quadrant to the fourth quadrant and decreased by 2[pi] when the quadrant changes from the fourth quadrant to the first quadrant whereby the absolute phase of the frequency or phase modulated signal can be determined using an arbitrary reference convention. 6 figs.

  16. Renewable Energy & Energy Efficiency Partnership (REEEP) Digital...

    Open Energy Info (EERE)

    (REEEP) Digital Library Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy and Energy Efficiency Partnership (REEEP) Digital Library AgencyCompany...

  17. Digital Data Management Glossary | Department of Energy

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

    Glossary Digital Data Management Glossary Digital data management glossary terms are defined below. Data preservation: Data preservation means providing for the usability of data ...

  18. NERSC Hosts Digital Stargazing Portal

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

    NERSC Hosts Digital Stargazing Portal NERSC Hosts Digital Stargazing Portal June 4, 2015 Legacy highres 1400x800 Courtesy of DECam Legacy Survey Even non-scientists can now browse sky survey images hosted at NERSC. The DECam Legacy Survey has published the first in a series of web-based catalogs that will offer an update to images of the night sky originally taken with the 15-year-old camera of the Sloan Digital Sky Survey. In the spirit of the new information age, the survey will share frequent

  19. Digital-data receiver synchronization

    DOE Patents [OSTI]

    Smith, Stephen F.; Turner, Gary W.

    2005-08-02

    Digital-data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock can be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  20. Artifacts in digital coincidence timing

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Moses, W. W.; Peng, Q.

    2014-10-16

    Digital methods are becoming increasingly popular for measuring time differences, and are the de facto standard in PET cameras. These methods usually include a master system clock and a (digital) arrival time estimate for each detector that is obtained by comparing the detector output signal to some reference portion of this clock (such as the rising edge). Time differences between detector signals are then obtained by subtracting the digitized estimates from a detector pair. A number of different methods can be used to generate the digitized arrival time of the detector output, such as sending a discriminator output into amore » time to digital converter (TDC) or digitizing the waveform and applying a more sophisticated algorithm to extract a timing estimator.All measurement methods are subject to error, and one generally wants to minimize these errors and so optimize the timing resolution. A common method for optimizing timing methods is to measure the coincidence timing resolution between two timing signals whose time difference should be constant (such as detecting gammas from positron annihilation) and selecting the method that minimizes the width of the distribution (i.e. the timing resolution). Unfortunately, a common form of error (a nonlinear transfer function) leads to artifacts that artificially narrow this resolution, which can lead to erroneous selection of the 'optimal' method. In conclusion, the purpose of this note is to demonstrate the origin of this artifact and suggest that caution should be used when optimizing time digitization systems solely on timing resolution minimization.« less

  1. Apparatus and method for managing digital resources by passing digital resource tokens between queues

    DOE Patents [OSTI]

    Crawford, Henry J.; Lindenstruth, Volker

    1999-01-01

    A method of managing digital resources of a digital system includes the step of reserving token values for certain digital resources in the digital system. A selected token value in a free-buffer-queue is then matched to an incoming digital resource request. The selected token value is then moved to a valid-request-queue. The selected token is subsequently removed from the valid-request-queue to allow a digital agent in the digital system to process the incoming digital resource request associated with the selected token. Thereafter, the selected token is returned to the free-buffer-queue.

  2. Apparatus and method for managing digital resources by passing digital resource tokens between queues

    DOE Patents [OSTI]

    Crawford, H.J.; Lindenstruth, V.

    1999-06-29

    A method of managing digital resources of a digital system includes the step of reserving token values for certain digital resources in the digital system. A selected token value in a free-buffer-queue is then matched to an incoming digital resource request. The selected token value is then moved to a valid-request-queue. The selected token is subsequently removed from the valid-request-queue to allow a digital agent in the digital system to process the incoming digital resource request associated with the selected token. Thereafter, the selected token is returned to the free-buffer-queue. 6 figs.

  3. Precision digital pulse phase generator

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1996-01-01

    A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code.

  4. Precision digital pulse phase generator

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-10-08

    A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code. 2 figs.

  5. Mesofluidic two stage digital valve

    DOE Patents [OSTI]

    Jansen, John F; Love, Lonnie J; Lind, Randall F; Richardson, Bradley S

    2013-12-31

    A mesofluidic scale digital valve system includes a first mesofluidic scale valve having a valve body including a bore, wherein the valve body is configured to cooperate with a solenoid disposed substantially adjacent to the valve body to translate a poppet carried within the bore. The mesofluidic scale digital valve system also includes a second mesofluidic scale valve disposed substantially perpendicular to the first mesofluidic scale valve. The mesofluidic scale digital valve system further includes a control element in communication with the solenoid, wherein the control element is configured to maintain the solenoid in an energized state for a fixed period of time to provide a desired flow rate through an orifice of the second mesofluidic valve.

  6. Digitally controlled distributed phase shifter

    DOE Patents [OSTI]

    Hietala, Vincent M.; Kravitz, Stanley H.; Vawter, Gregory A.

    1993-01-01

    A digitally controlled distributed phase shifter is comprised of N phase shifters. Digital control is achieved by using N binary length-weighted electrodes located on the top surface of a waveguide. A control terminal is attached to each electrode thereby allowing the application of a control signal. The control signal is either one or two discrete bias voltages. The application of the discrete bias voltages changes the modal index of a portion of the waveguide that corresponds to a length of the electrode to which the bias voltage is applied, thereby causing the phase to change through the underlying portion of the waveguide. The digitally controlled distributed phase shift network has a total phase shift comprised of the sum of the individual phase shifters.

  7. Digitally controlled distributed phase shifter

    DOE Patents [OSTI]

    Hietala, V.M.; Kravitz, S.H.; Vawter, G.A.

    1993-08-17

    A digitally controlled distributed phase shifter is comprised of N phase shifters. Digital control is achieved by using N binary length-weighted electrodes located on the top surface of a waveguide. A control terminal is attached to each electrode thereby allowing the application of a control signal. The control signal is either one or two discrete bias voltages. The application of the discrete bias voltages changes the modal index of a portion of the waveguide that corresponds to a length of the electrode to which the bias voltage is applied, thereby causing the phase to change through the underlying portion of the waveguide. The digitally controlled distributed phase shift network has a total phase shift comprised of the sum of the individual phase shifters.

  8. Additional Guidance for EERE Digital Data Management Plans |...

    Office of Environmental Management (EM)

    Services Funding Digital Data Management Additional Guidance for EERE Digital Data Management Plans Additional Guidance for EERE Digital Data Management Plans Beyond the ...

  9. Plasma digital density determining device

    DOE Patents [OSTI]

    Sprott, Julien C.; Lovell, Thomas W.; Holly, Donald J.

    1976-01-01

    The density of a decaying plasma in an electrically conducting enclosure is determined by applying an excitation to the cavity formed by the enclosure and counting digitally the number of resonant frequencies traversed by the combination of the cavity and the decaying plasma.

  10. Federal Digital Strategy | OpenEI Community

    Open Energy Info (EERE)

    Federal Digital Strategy Home Graham7781's picture Submitted by Graham7781(2017) Super contributor 19 September, 2012 - 14:32 OpenEI part of the Federal Digital Strategy data...

  11. Federal Digital Strategy | Department of Energy

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

    Federal Digital Strategy Federal Digital Strategy New expectations require the Federal Government to be ready to deliver and receive digital information and services anytime, anywhere and on any device. It must do so safely, securely, and with fewer resources. To build for the future, the Federal Government has developed a Digital Strategy that embraces the opportunity to innovate more with less, and enables entrepreneurs to better leverage government data to improve the quality of services to

  12. EERE Digital Data Management | Department of Energy

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

    Apply for Funding » EERE Digital Data Management EERE Digital Data Management The Office of Energy Efficiency and Renewable Energy (EERE) Policy on Digital Data Management is part of the implementation of the Department of Energy's Public Access Plan and was developed in alignment with the U.S. Department of Energy (DOE) Policy on Digital Data Management. EERE's mission is to create and sustain American leadership in the transition to a global clean energy economy. EERE leads the Department of

  13. Digital electronic bone growth stimulator

    DOE Patents [OSTI]

    Kronberg, James W.

    1995-01-01

    A device for stimulating bone tissue by applying a low level alternating current signal directly to the patient's skin. A crystal oscillator, a binary divider chain and digital logic gates are used to generate the desired waveforms that reproduce the natural electrical characteristics found in bone tissue needed for stimulating bone growth and treating osteoporosis. The device, powered by a battery, contains a switch allowing selection of the correct waveform for bone growth stimulation or osteoporosis treatment so that, when attached to the skin of the patient using standard skin contact electrodes, the correct signal is communicated to the underlying bone structures.

  14. Digital electronic bone growth stimulator

    DOE Patents [OSTI]

    Kronberg, J.W.

    1995-05-09

    A device is described for stimulating bone tissue by applying a low level alternating current signal directly to the patient`s skin. A crystal oscillator, a binary divider chain and digital logic gates are used to generate the desired waveforms that reproduce the natural electrical characteristics found in bone tissue needed for stimulating bone growth and treating osteoporosis. The device, powered by a battery, contains a switch allowing selection of the correct waveform for bone growth stimulation or osteoporosis treatment so that, when attached to the skin of the patient using standard skin contact electrodes, the correct signal is communicated to the underlying bone structures. 5 figs.

  15. Digital Mapping Of Structurally Controlled Geothermal Features...

    Open Energy Info (EERE)

    GPS Units And Pocket Computers Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Digital Mapping Of Structurally Controlled Geothermal Features...

  16. Digital Power Capital LLC | Open Energy Information

    Open Energy Info (EERE)

    Capital LLC Jump to: navigation, search Name: Digital Power Capital LLC Place: Greenwich, Connecticut Zip: 6830 Product: A private equity firm focused on new technologies that...

  17. Half Metallic Digital Ferromagnetic Heterostructure Composed...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Half Metallic Digital Ferromagnetic ... originating from hybridized Mn-d and nearest-neighbor Si-p states, and the corresponding ...

  18. Digital Surveying Directional Surveying Specialists | Open Energy...

    Open Energy Info (EERE)

    Surveying Specialists Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Digital Surveying Directional Surveying Specialists Author Directional Surveying...

  19. Half Metallic Digital Ferromagnetic Heterostructure Composed...

    Office of Scientific and Technical Information (OSTI)

    The authors propose and investigate the properties of a digital ferromagnetic ... Letters, vol. 96, NA, January 19, 2006, pp. 027211; Journal Volume: 96 Research Org: ...

  20. Digital Gas Inc | Open Energy Information

    Open Energy Info (EERE)

    Gas Inc Jump to: navigation, search Name: Digital Gas Inc Place: Dallas, Texas Sector: Solar Product: Company with a number of subsidiaries involved in mining, solar power, waste...

  1. Axial Tomography from Digitized Real Time Radiography

    DOE R&D Accomplishments [OSTI]

    Zolnay, A. S.; McDonald, W. M.; Doupont, P. A.; McKinney, R. L.; Lee, M. M.

    1985-01-18

    Axial tomography from digitized real time radiographs provides a useful tool for industrial radiography and tomography. The components of this system are: x-ray source, image intensifier, video camera, video line extractor and digitizer, data storage and reconstruction computers. With this system it is possible to view a two dimensional x-ray image in real time at each angle of rotation and select the tomography plane of interest by choosing which video line to digitize. The digitization of a video line requires less than a second making data acquisition relatively short. Further improvements on this system are planned and initial results are reported.

  2. Digital Data Management Requirements | Department of Energy

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

    Requirements Digital Data Management Requirements To integrate data management planning into an overall research plan, the following requirements will apply to all Office of Energy ...

  3. Digital Data Management Roles and Responsibilities | Department...

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

    Digital Data Management Roles and Responsibilities The roles and responsibilities associated with Office of Energy Efficiency and Renewable Energy (EERE) data management plans ...

  4. Digital Data Management Frequently Asked Questions | Department...

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

    Frequently Asked Questions Digital Data Management Frequently Asked Questions Submitting a Data Management Plan 1. I am submitting an applicationproposal for research funding in ...

  5. RF digital-to-analog converter

    DOE Patents [OSTI]

    Conway, P.H.; Yu, D.U.L.

    1995-02-28

    A digital-to-analog converter is disclosed for producing an RF output signal proportional to a digital input word of N bits from an RF reference input, N being an integer greater or equal to 2. The converter comprises a plurality of power splitters, power combiners and a plurality of mixers or RF switches connected in a predetermined configuration. 18 figs.

  6. RF digital-to-analog converter

    DOE Patents [OSTI]

    Conway, Patrick H.; Yu, David U. L.

    1995-01-01

    A digital-to analogue converter for producing an RF output signal proportional to a digital input word of N bits from an RF reference input, N being an integer greater or equal to 2. The converter comprises a plurality of power splitters, power combiners and a plurality of mixers or RF switches connected in a predetermined configuration.

  7. Optical analog-to-digital converter

    DOE Patents [OSTI]

    Vawter, G. Allen; Raring, James; Skogen, Erik J.

    2009-07-21

    An optical analog-to-digital converter (ADC) is disclosed which converts an input optical analog signal to an output optical digital signal at a sampling rate defined by a sampling optical signal. Each bit of the digital representation is separately determined using an optical waveguide interferometer and an optical thresholding element. The interferometer uses the optical analog signal and the sampling optical signal to generate a sinusoidally-varying output signal using cross-phase-modulation (XPM) or a photocurrent generated from the optical analog signal. The sinusoidally-varying output signal is then digitized by the thresholding element, which includes a saturable absorber or at least one semiconductor optical amplifier, to form the optical digital signal which can be output either in parallel or serially.

  8. The Digital Revolution in Measurements

    SciTech Connect (OSTI)

    Kirkham, Harold

    2013-02-27

    This paper considers what it means to make a measurement, and the changes in measurement technology over the years. The impact of the latest changes, which have resulted in most electrical measurements being done digitally, is explored. It is argued that the process of measurement can be considered equivalent to one of data compression. The smart grid will certainly result in many more signals being made available, and therefore a great deal of data compression will be taking place. Measurements will be made in parts of the power system presently unmonitored, as well as parts that are already well covered by instrumentation. The smart grid engineer must decide what it means to have “useful” information. Unless care is taken, the signal processing may furnish information that is not useful, and may not even make sense. The paper concludes by examining the possibilities of data compression from multiple separate signals.

  9. Lessons learned in digital upgrade projects digital control system implementation at US nuclear power stations

    SciTech Connect (OSTI)

    Kelley, S.; Bolian, T. W.

    2006-07-01

    AREVA NP has gained significant experience during the past five years in digital upgrades at operating nuclear power stations in the US. Plants are seeking modernization with digital technology to address obsolescence, spare parts availability, vendor support, increasing age-related failures and diminished reliability. New systems offer improved reliability and functionality, and decreased maintenance requirements. Significant lessons learned have been identified relating to the areas of licensing, equipment qualification, software quality assurance and other topics specific to digital controls. Digital control systems have been installed in non safety-related control applications at many utilities within the last 15 years. There have also been a few replacements of small safety-related systems with digital technology. Digital control systems are proving to be reliable, accurate, and easy to maintain. Digital technology is gaining acceptance and momentum with both utilities and regulatory agencies based upon the successes of these installations. Also, new plants are being designed with integrated digital control systems. To support plant life extension and address obsolescence of critical components, utilities are beginning to install digital technology for primary safety-system replacement. AREVA NP analyzed operating experience and lessons learned from its own digital upgrade projects as well as industry-wide experience to identify key issues that should be considered when implementing digital controls in nuclear power stations.

  10. Nazim Bharmal Anthony Slingo Jeff Settle Gary Robinson Helen...

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

    the TOA radiances every 15 min from Geostationary Earth Radiation Budget (GERB). * Edwards-Slingo RT code used to calculate consistent flux components. * Or, use measurements...

  11. From: Gary Mareschal To: Congestion Study Comments Subject:

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

    NIETC's and the use of federal eminent domain to condemn private land to establish them. ... and Clean Line Energy Partners to obtain private land for their own benefit, and I assume ...

  12. Dr. Gary L. Scott to Lead New Border Technology Program

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

    He earned his doctorate in political science from Idaho State University. The National Border Technology Partnership Program, led by the Carlsbad Field Office, is a new DOE...

  13. The Honorable Gary Loster 1315 S. Washington Avenue

    Office of Legacy Management (LM)

    W. Alerander Williams (301-427-1719) of my staff. Sincer ly, 4 z&a Oames W. Wagoner II" Director Off-SiteSavannah River Division Office of Eastern Area Programs Office of ...

  14. Major Gary Widner Illinois National Guard Camp Lincoln 1301 N...

    Office of Legacy Management (LM)

    In response to your questions on previous notification of surveys and the associated results, we have nothjng in our earlier files or those of the Department of Energy Chicago ...

  15. The Digital Road to Scientific Knowledge Diffusion; A Faster...

    Office of Scientific and Technical Information (OSTI)

    The Digital Road to Scientific Knowledge Diffusion; A Faster, Better Way to Scientific Progress? Citation Details In-Document Search Title: The Digital Road to Scientific Knowledge ...

  16. Improved Engine Control Strategies Enabled by Digital Signal...

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

    Engine Control Strategies Enabled by Digital Signal-Processing Method for Zirconia Exhaust Sensors Improved Engine Control Strategies Enabled by Digital Signal-Processing Method ...

  17. DOE Policy for Digital Research Data Management | Department...

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

    DOE Policy for Digital Research Data Management The Department of Energy (DOE) is ... Here, data management involves all stages of the digital data lifecycle including capture, ...

  18. Digital Data Management Additional Guidance | Department of Energy

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

    Additional Guidance Digital Data Management Additional Guidance Beyond the Office of Energy Efficiency and Renewable Energy (EERE) digital data management requirements, the ...

  19. The Sloan Digital Sky Survey Monitor Telescope Pipeline (Journal...

    Office of Scientific and Technical Information (OSTI)

    The Sloan Digital Sky Survey Monitor Telescope Pipeline Citation Details In-Document Search Title: The Sloan Digital Sky Survey Monitor Telescope Pipeline You are accessing a...

  20. SEARCH FOR SUPERMASSIVE BLACK HOLE BINARIES IN THE SLOAN DIGITAL...

    Office of Scientific and Technical Information (OSTI)

    THE SLOAN DIGITAL SKY SURVEY SPECTROSCOPIC SAMPLE Citation Details In-Document Search Title: SEARCH FOR SUPERMASSIVE BLACK HOLE BINARIES IN THE SLOAN DIGITAL SKY SURVEY ...

  1. Methods and systems for detecting abnormal digital traffic (Patent...

    Office of Scientific and Technical Information (OSTI)

    Methods and systems for detecting abnormal digital traffic Title: Methods and systems for detecting abnormal digital traffic Aspects of the present invention encompass methods and ...

  2. ChemCam sends digital 'thumbs up'

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

    ChemCam sends digital 'thumbs up' ChemCam sends digital 'thumbs up' Members of the team got a digital thumbs up about the operational readiness of their instrument just hours after the rover landed on Martian soil. August 8, 2012 Researchers from LANL and the French Space Agency examine data from the Mars Science Laboratory Curiosity rover from inside the ChemCam Operations Center at NASA's Jet Propulsion Laboratory on Monday, Aug. 6, 2012, less than a day after the rover landed on Mars. The

  3. Digital electronic bone growth stimulator

    DOE Patents [OSTI]

    Kronberg, J.W.

    1993-01-01

    The present invention relates to the electrical treatment of biological tissue. In particular, the present invention discloses a device that produces discrete electrical pulse trains for treating osteoporosis and accelerating bone growth. According to its major aspects and broadly stated, the present invention consists of an electrical circuit configuration capable of generating Bassett-type waveforms shown with alternative signals provide for the treatment of either fractured bones or osteoporosis. The signal generator comprises a quartz clock, an oscillator circuit, a binary divider chain, and a plurality of simple, digital logic gates. Signals are delivered efficiently, with little or no distortion, and uniformly distributed throughout the area of injury. Perferably, power is furnished by widely available and inexpensive radio batteries, needing replacement only once in several days. The present invention can be affixed to a medical cast without a great increase in either weight or bulk. Also, the disclosed stimulator can be used to treat osteoporosis or to strengthen a healing bone after the cast has been removed by attaching the device to the patient`s skin or clothing.

  4. Digital radiography: a focus on clinical utility

    SciTech Connect (OSTI)

    Price, R.R.; Rollo, F.D.; Monahan, W.G.; James, A.E. Jr.

    1982-01-01

    This book is interesting and timely in that it covers the new and exciting area of digital radiography. The book begins with chapters on the physics, instrumentation, and terminology of digital radiography. Then cost-benefit ratios, legal implication, and outpatient vs. inpatient studies are discussed. The clinical chapters follow. These are applicable to the head and neck, heart, lungs, kidneys, peripheral arteries, and pediatric population. Discussion then centers on intraarterial digital subtraction, clinical experience at Wisconsin, nonangiography application of digital radiology in children, and analog film-screen subtraction intravenous angiography. The book ends by briefly discussing microwave imaging, nuclear magnetic resonance, emission tomography, real-time and Doppler sonography, analog tomography, and the future photoelectric radiology department.

  5. Daylighting Digital Dimmer | Department of Energy

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

    Daylighting Digital Dimmer Daylighting Digital Dimmer Lead Performer: MoJo Labs Inc. - Longmont, CO DOE Total Funding: $992,918 Project Term: July 28, 2015 - July 27, 2017 Funding Opportunity: FY2015 Phase II Release 2 SBIR Awards PROJECT OBJECTIVE The novel solid-state lighting control architecture successfully demonstrated during the Phase I effort produced a product called the RiteBriteTM, which uses a patent-pending technology called Task-to-Wall (TTW) Translation. It provides

  6. Concurrent signal combining and channel estimation in digital communications

    DOE Patents [OSTI]

    Ormesher, Richard C.; Mason, John J.

    2011-08-30

    In the reception of digital information transmitted on a communication channel, a characteristic exhibited by the communication channel during transmission of the digital information is estimated based on a communication signal that represents the digital information and has been received via the communication channel. Concurrently with the estimating, the communication signal is used to decide what digital information was transmitted.

  7. Everything Digital: Converting the world in 2 Exabytes

    SciTech Connect (OSTI)

    Lesk, Michael

    2003-11-05

    Nearly everything created today is in digital format: music is on digital CDs, documents come from word processing, still photography is switching to digital cameras and even movies are now edited digitally. What about the past? We have projects like the Million Book Project scanning one million books, and we know technically how to convert everything: the problems are legal, economic and organizational.

  8. Direct-to-digital holography and holovision

    DOE Patents [OSTI]

    Thomas, Clarence E.; Baylor, Larry R.; Hanson, Gregory R.; Rasmussen, David A.; Voelkl, Edgar; Castracane, James; Simkulet, Michelle; Clow, Lawrence

    2000-01-01

    Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made.

  9. Digital gate pulse generator for cycloconverter control

    DOE Patents [OSTI]

    Klein, Frederick F.; Mutone, Gioacchino A.

    1989-01-01

    The present invention provides a digital gate pulse generator which controls the output of a cycloconverter used for electrical power conversion applications by determining the timing and delivery of the firing pulses to the switching devices in the cycloconverter. Previous gate pulse generators have been built with largely analog or discrete digital circuitry which require many precision components and periodic adjustment. The gate pulse generator of the present invention utilizes digital techniques and a predetermined series of values to develop the necessary timing signals for firing the switching device. Each timing signal is compared with a reference signal to determine the exact firing time. The present invention is significantly more compact than previous gate pulse generators, responds quickly to changes in the output demand and requires only one precision component and no adjustments.

  10. Virtual mask digital electron beam lithography

    DOE Patents [OSTI]

    Baylor, L.R.; Thomas, C.E.; Voelkl, E.; Moore, J.A.; Simpson, M.L.; Paulus, M.J.

    1999-04-06

    Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made. 5 figs.

  11. Virtual mask digital electron beam lithography

    DOE Patents [OSTI]

    Baylor, Larry R.; Thomas, Clarence E.; Voelkl, Edgar; Moore, James A.; Simpson, Michael L.; Paulus, Michael J.

    1999-01-01

    Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made.

  12. Digitally programmable signal generator and method

    DOE Patents [OSTI]

    Priatko, G.J.; Kaskey, J.A.

    1989-11-14

    Disclosed is a digitally programmable waveform generator for generating completely arbitrary digital or analog waveforms from very low frequencies to frequencies in the gigasample per second range. A memory array with multiple parallel outputs is addressed; then the parallel output data is latched into buffer storage from which it is serially multiplexed out at a data rate many times faster than the access time of the memory array itself. While data is being multiplexed out serially, the memory array is accessed with the next required address and presents its data to the buffer storage before the serial multiplexing of the last group of data is completed, allowing this new data to then be latched into the buffer storage for smooth continuous serial data output. In a preferred implementation, a plurality of these serial data outputs are paralleled to form the input to a digital to analog converter, providing a programmable analog output. 6 figs.

  13. Digitally programmable signal generator and method

    DOE Patents [OSTI]

    Priatko, Gordon J.; Kaskey, Jeffrey A.

    1989-01-01

    A digitally programmable waveform generator for generating completely arbitrary digital or analog waveforms from very low frequencies to frequencies in the gigasample per second range. A memory array with multiple parallel outputs is addressed; then the parallel output data is latched into buffer storage from which it is serially multiplexed out at a data rate many times faster than the access time of the memory array itself. While data is being multiplexed out serially, the memory array is accessed with the next required address and presents its data to the buffer storage before the serial multiplexing of the last group of data is completed, allowing this new data to then be latched into the buffer storage for smooth continuous serial data output. In a preferred implementation, a plurality of these serial data outputs are paralleled to form the input to a digital to analog converter, providing a programmable analog output.

  14. Digitally programmable signal generator and method

    SciTech Connect (OSTI)

    Priatko, G.J.; Kaskey, J.A.

    1986-09-02

    A digitally programmable signal generator (DPSG) and method are disclosed. The DPSG can be used in applications such as Atomic Vapor Laser Isotope Separation (AVLIS) to create an optimal match between the process laser's spectral profile and that of the vaporized material. Other applications include optical telecommunications, non-optical telecommunication in the microwave and radio spectrum, radar, electronic countermeasures, high speed computer interconnects, local area networks, high definition video transport and the multiplexing of large quantities of slow digital memory into high speed data streams. This invention extends the operation of DPSGs into the GHz range, while preserving all of the current art's DPSGs' operational features.

  15. Sandia National Laboratories: Sandia Digital Media

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

    Sandia Digital Media Now Playing Featured Categories At Sandia Community Service Energy Engineering - Nuclear Health-Safety Historical Material National Security Sciences and Engineering Technical Training Search Videos Webinars There are no current webinars at this time. For Media Browse Sandia's Media B-Roll. For additional information, view Sandia's Media Contacts and Resources page.

  16. Development of GEM-Based Digital Hadron Calorimetry Using the...

    Office of Scientific and Technical Information (OSTI)

    Conference: Development of GEM-Based Digital Hadron Calorimetry Using the SLAC KPiX Chip Citation Details In-Document Search Title: Development of GEM-Based Digital Hadron...

  17. The Sloan Digital Sky Survey Quasar Lens Search. IV. Statistical...

    Office of Scientific and Technical Information (OSTI)

    The Sloan Digital Sky Survey Quasar Lens Search. IV. Statistical Lens Sample from the Fifth Data Release Citation Details In-Document Search Title: The Sloan Digital Sky Survey...

  18. Consortium on Digital Energy CoDE | Open Energy Information

    Open Energy Info (EERE)

    on Digital Energy CoDE Jump to: navigation, search Name: Consortium on Digital Energy (CoDE) Place: London, England, United Kingdom Zip: EC2A 1QP Product: London-based consortium...

  19. Recording multiple spatially-heterodyned direct to digital holograms in one digital image

    DOE Patents [OSTI]

    Hanson, Gregory R.; Bingham, Philip R.

    2008-03-25

    Systems and methods are described for recording multiple spatially-heterodyned direct to digital holograms in one digital image. A method includes digitally recording, at a first reference beam-object beam angle, a first spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis; Fourier analyzing the recorded first spatially-heterodyned hologram by shifting a first original origin of the recorded first spatially-heterodyned hologram to sit on top of a first spatial-heterodyne carrier frequency defined by the first reference beam-object beam angle; digitally recording, at a second reference beam-object beam angle, a second spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis; Fourier analyzing the recorded second spatially-heterodyned hologram by shifting a second original origin of the recorded second spatially-heterodyned hologram to sit on top of a second spatial-heterodyne carrier frequency defined by the second reference beam-object beam angle; applying a first digital filter to cut off signals around the first original origin and define a first result; performing a first inverse Fourier transform on the first result; applying a second digital filter to cut off signals around the second original origin and define a second result; and performing a second inverse Fourier transform on the second result, wherein the first reference beam-object beam angle is not equal to the second reference beam-object beam angle and a single digital image includes both the first spatially-heterodyned hologram and the second spatially-heterodyned hologram.

  20. The Focusing DIRC with Waveform Digitizing Electronics

    SciTech Connect (OSTI)

    Ruckman, L.L.; Nishimura, K.; Varner, G.S.; Vavra, J.; Aston, D.; Leith, D.W.G.S.; Ratcliff, B.; /SLAC

    2012-06-15

    We have tested a novel Cherenkov imaging detector called the Focusing DIRC (FDIRC) with waveform digitizing electronics. The prototype's concept is based on the BaBar DIRC with several important improvements: (a) much faster, pixelated photon detectors, (b) a mirror that makes the photon detector smaller and less sensitive to background in future applications, and (c) electronics capable of measuring single photon resolution to {sigma} {approx} 150 ps, which allows for correction due to chromatic error. In this test, the prototype has been instrumented with seven Hamamatsu H-8500 MaPMTs. Waveforms from {approx}450 pixels are digitized with waveform sampling electronics based on the BLAB2 ASIC, operating at a sampling speed of {approx}2.5 GSa/s. This version of the FDIRC prototype was tested in a large cosmic ray telescope providing muon tracks with {approx}1 mrad angular resolution and a muon momentum cutoff of {ge} 1.6 GeV/c.

  1. Fundamental Concepts of Digital Image Processing

    DOE R&D Accomplishments [OSTI]

    Twogood, R. E.

    1983-03-01

    The field of a digital-image processing has experienced dramatic growth and increasingly widespread applicability in recent years. Fortunately, advances in computer technology have kept pace with the rapid growth in volume of image data in these and other applications. Digital image processing has become economical in many fields of research and in industrial and military applications. While each application has requirements unique from the others, all are concerned with faster, cheaper, more accurate, and more extensive computation. The trend is toward real-time and interactive operations, where the user of the system obtains preliminary results within a short enough time that the next decision can be made by the human processor without loss of concentration on the task at hand. An example of this is the obtaining of two-dimensional (2-D) computer-aided tomography (CAT) images. A medical decision might be made while the patient is still under observation rather than days later.

  2. Digital computer operation of a nuclear reactor

    DOE Patents [OSTI]

    Colley, R.W.

    1982-06-29

    A method is described for the safe operation of a complex system such as a nuclear reactor using a digital computer. The computer is supplied with a data base containing a list of the safe state of the reactor and a list of operating instructions for achieving a safe state when the actual state of the reactor does not correspond to a listed safe state, the computer selects operating instructions to return the reactor to a safe state.

  3. Digital computer operation of a nuclear reactor

    DOE Patents [OSTI]

    Colley, Robert W.

    1984-01-01

    A method is described for the safe operation of a complex system such as a nuclear reactor using a digital computer. The computer is supplied with a data base containing a list of the safe state of the reactor and a list of operating instructions for achieving a safe state when the actual state of the reactor does not correspond to a listed safe state, the computer selects operating instructions to return the reactor to a safe state.

  4. The Digital Road to Scientific Knowledge Diffusion

    Office of Scientific and Technical Information (OSTI)

    Digital Road to Scientific Knowledge Diffusion A Faster, Better Way to Scientific Progress? By David E. Wojick, Walter L. Warnick, Bonnie C. Carroll, and June Crowe Introduction With the United States federal government spending over $130 billion annually for research and development, ways to increase the productivity of that research can have a significant return on investment. It is well known that all scientific advancement is based on work that has come before. Isaac Newton expressed this

  5. Image display device in digital TV

    DOE Patents [OSTI]

    Choi, Seung Jong

    2006-07-18

    Disclosed is an image display device in a digital TV that is capable of carrying out the conversion into various kinds of resolution by using single bit map data in the digital TV. The image display device includes: a data processing part for executing bit map conversion, compression, restoration and format-conversion for text data; a memory for storing the bit map data obtained according to the bit map conversion and compression in the data processing part and image data inputted from an arbitrary receiving part, the receiving part receiving one of digital image data and analog image data; an image outputting part for reading the image data from the memory; and a display processing part for mixing the image data read from the image outputting part and the bit map data converted in format from the a data processing part. Therefore, the image display device according to the present invention can convert text data in such a manner as to correspond with various resolution, carry out the compression for bit map data, thereby reducing the memory space, and support text data of an HTML format, thereby providing the image with the text data of various shapes.

  6. Portable Digital Radiography and Computed Tomography Manual

    SciTech Connect (OSTI)

    Not Available

    2007-11-01

    This user manual describes the function and use of the portable digital radiography and computed tomography (DRCT) scanner. The manual gives a general overview of x-ray imaging systems along with a description of the DRCT system. An inventory of the all the system components, organized by shipping container, is also included. In addition, detailed, step-by-step procedures are provided for all of the exercises necessary for a novice user to successfully collect digital radiographs and tomographic images of an object, including instructions on system assembly and detector calibration and system alignment. There is also a short section covering the limited system care and maintenance needs. Descriptions of the included software packages, the DRCT Digital Imager used for system operation, and the DRCT Image Processing Interface used for image viewing and tomographic data reconstruction are given in the appendixes. The appendixes also include a cheat sheet for more experienced users, a listing of known system problems and how to mitigate them, and an inventory check-off sheet suitable for copying and including with the machine for shipment purposes.

  7. DIGITAL TECHNOLOGY BUSINESS CASE METHODOLOGY GUIDE & WORKBOOK

    SciTech Connect (OSTI)

    Thomas, Ken; Lawrie, Sean; Hart, Adam; Vlahoplus, Chris

    2014-09-01

    Performance advantages of the new digital technologies are widely acknowledged, but it has proven difficult for utilities to derive business cases for justifying investment in these new capabilities. Lack of a business case is often cited by utilities as a barrier to pursuing wide-scale application of digital technologies to nuclear plant work activities. The decision to move forward with funding usually hinges on demonstrating actual cost reductions that can be credited to budgets and thereby truly reduce O&M or capital costs. Technology enhancements, while enhancing work methods and making work more efficient, often fail to eliminate workload such that it changes overall staffing and material cost requirements. It is critical to demonstrate cost reductions or impacts on non-cost performance objectives in order for the business case to justify investment by nuclear operators. This Business Case Methodology approaches building a business case for a particular technology or suite of technologies by detailing how they impact an operator in one or more of the three following areas: Labor Costs, Non-Labor Costs, and Key Performance Indicators (KPIs). Key to those impacts will be identifying where the savings are harvestable, meaning they result in an actual reduction in headcount and/or cost. The report consists of a Digital Technology Business Case Methodology Guide and an accompanying spreadsheet workbook that will enable the user to develop a business case.

  8. Digital I and C system upgrade integration technique

    SciTech Connect (OSTI)

    Huang, H. W.; Shih, C.; Wang, J. R.; Huang, K. C.

    2012-07-01

    This work developed an integration technique for digital I and C system upgrade, the utility can replace the I and C systems step by step systematically by this method. Inst. of Nuclear Energy Research (INER) developed a digital Instrumentation and Control (I and C) replacement integration technique on the basis of requirement of the three existing nuclear power plants (NPPs), which are Chin-Shan (CS) NPP, Kuo-Sheng (KS) NPP, and Maanshan (MS) NPP, in Taiwan, and also developed the related Critical Digital Review (CDR) Procedure. The digital I and C replacement integration technique includes: (I) Establishment of Nuclear Power Plant Digital Replacement Integration Guideline, (2) Preliminary Investigation on I and C System Digitalization, (3) Evaluation on I and C System Digitalization, and (4) Establishment of I and C System Digitalization Architectures. These works can be a reference for performing I and C system digital replacement integration of the three existing NPPs of Taiwan Power Company (TPC). A CDR is the review for a critical system digital I and C replacement. The major reference of this procedure is EPRI TR- 1011710 (2005) 'Handbook for Evaluating Critical Digital Equipment and Systems' which was published by the Electric Power Research Inst. (EPRI). With this document, INER developed a TPC-specific CDR procedure. Currently, CDR becomes one of the policies for digital I and C replacement in TPC. The contents of this CDR procedure include: Scope, Responsibility, Operation Procedure, Operation Flow Chart, CDR review items. The CDR review items include the comparison of the design change, Software Verification and Validation (SVandV), Failure Mode and Effects Analysis (FMEA), Evaluation of Diversity and Defense-in-depth (D3), Evaluation of Watchdog Timer, Evaluation of Electromagnetic Compatibility (EMC), Evaluation of Grounding for System/Component, Seismic Evaluation, Witness and Inspection, Lessons Learnt from the Digital I and C Failure Events. A

  9. EBR-II and TREAT Digitization Project

    SciTech Connect (OSTI)

    Griffith, George W.; Rabiti, Cristian

    2015-09-01

    Digitizing the technical drawings for EBR-II and TREAT provides multiple benefits. Moving the scanned or hard copy drawings to modern 3-D CAD (Computer Aided Drawing) format saves data that could be lost over time. The 3-D drawings produce models that can interface with other drawings to make complex assemblies. The 3-D CAD format can also include detailed material properties and parametric coding that can tie critical dimensions together allowing easier modification. Creating the new files from the old drawings has found multiple inconsistencies that are being flagged or corrected improving understanding of the reactor(s).

  10. Jefferson Lab Groups Encourage Digital Literacy Through Worldwide 'Hour

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

    of Code' Campaign | Jefferson Lab Groups Encourage Digital Literacy Through Worldwide 'Hour of Code' Campaign Dana Cochran, Jefferson Lab staff member, helps students as they participate in a coding activity. Dana Cochran, Jefferson Lab staff member, helps students as they participate in a coding activity. Jefferson Lab Groups Encourage Digital Literacy Through Worldwide 'Hour of Code' Campaign To raise awareness of the need for digital literacy and a basic understanding of computer science,

  11. Human Reliability Analysis for Digital Human-Machine Interfaces

    SciTech Connect (OSTI)

    Ronald L. Boring

    2014-06-01

    This paper addresses the fact that existing human reliability analysis (HRA) methods do not provide guidance on digital human-machine interfaces (HMIs). Digital HMIs are becoming ubiquitous in nuclear power operations, whether through control room modernization or new-build control rooms. Legacy analog technologies like instrumentation and control (I&C) systems are costly to support, and vendors no longer develop or support analog technology, which is considered technologically obsolete. Yet, despite the inevitability of digital HMI, no current HRA method provides guidance on how to treat human reliability considerations for digital technologies.

  12. Physical + Digital: The New Power Couple |GE Global Research

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

    product's individual parts and each part's unique lifecycles with digital tools like data lakes, model infrastructure, visualization, estimation, controls, and specialized...

  13. Jefferson Lab Groups Encourage Digital Literacy Through Worldwide...

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

    To raise awareness of the need for digital literacy and a basic understanding of computer science, Jefferson Lab's Information Technology Division and Science Education staff are ...

  14. EERE Digital Data Management Frequently Asked Questions | Department...

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

    Frequently Asked Questions EERE Digital Data Management Frequently Asked Questions Submitting a Data Management Plan 1. I am submitting an applicationproposal for research funding ...

  15. DOE Policy for Digital Research Data Management: Suggested Elements...

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

    Suggested Elements for a Data Management Plan DOE Policy for Digital Research Data Management: Suggested Elements for a Data Management Plan The Principal Investigator or other ...

  16. EERE Digital Data Management Glossary | Department of Energy

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

    Digital data management glossary terms are defined below. Data preservation: Data preservation means providing for the usability of data beyond the lifetime of the research ...

  17. Impact of Utility Rates on PV Economics - Digital Appendix |...

    Open Energy Info (EERE)

    for The Impacts of Utility Rates and Building Type on the Economics of Commercial Photovoltaic Systems. This digital appendix contains supplement material for the NREL technical...

  18. Sandia Energy - Digital In-Line Holography Helps Researchers...

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

    droplets of fuel are generated and behave in such cases. Sandia researchers developed 3-D measurement techniques based on digital in-line holography (DIH). Sandia advanced DIH...

  19. Digital X-ray Pipe Inspector Software

    Energy Science and Technology Software Center (OSTI)

    2009-10-29

    The Digital X-ray Pipe Inspector software requires a digital x-ray image of a pipe as input to the program, such as the image in Attachment A Figure 1. The image may be in a variety of software formats such as bitmap, jpeg, tiff, DICOM or DICONDE. The software allows the user to interactively select a region of interest from the image for analysis. This software is used to analyze digital x-ray images of pipes tomore » evaluate loss of wall thickness. The software specifically provides tools to analyze the image in (a) the pipe walls, (b) between the pipe walls. Traditional software uses only the information at the pipe wall while this new software also evaluates the image between the pipewalls. This makes the inspection process faster, more thorough, more efficient, and reduces expensive reshots. Attachment A Figure 2 shows a region of interest (a green box) drawn by the user around an anomaly in the pipe wall. This area is automatically analyzed by the external pipe wall tool with the result shown in Attachment A Figure 3. The edges of the pipe wall are detected and highlighted in yellow and areas where the wall thickness in less the the minimum wall threshold are shown in red. These measurements are typically made manually in other software programs, which lead to errors and inconsistency because the location of the edges are estimated by the user. Attachment A Figure 4 shows a region of interest (a green box) drawn by the user between the pipe walls. As can be seen there are intensity anomalies that correspond to wall defects. However, this information is not used directly by other software programs. In order to fully investigate these anomalies, the pipe would be reinspected in a different orientation to attempt to obtain a view of the anomaly in the pipe wall rather than the interior of the pipe. The pipe may need to be x-rayed a number of times to obtain the correct orientation. This is very costly and time consuming. The new software can perform the

  20. Digital radiography exposure indices: A review

    SciTech Connect (OSTI)

    Mothiram, Ursula; Brennan, Patrick C; Lewis, Sarah J; Moran, Bernadette; Robinson, John

    2014-06-15

    Digital radiography (DR) technologies have the advantage of a wide dynamic range compared to their film-screen predecessors, however, this poses a potential for increased patient exposure if left unchecked. Manufacturers have developed the exposure index (EI) to counter this, which provides radiographers with feedback on the exposure reaching the detector. As these EIs were manufacturer-specific, a wide variety of EIs existed. To offset this, the international standardised EI has been developed by the International Electrotechnical Commission (IEC) and the American Association of Physicists in Medicine (AAPM). The purpose of this article is to explore the current literature relating to EIs, beginning with the historical development of the EI, the development of the standardised EI and an exploration of common themes and studies as evidenced in the research literature. It is anticipated that this review will provide radiographers with a useful guide to understanding EIs, their application in clinical practice, limitations and suggestions for further research.

  1. Digital reverse propagation in focusing Kerr media

    SciTech Connect (OSTI)

    Goy, Alexandre; Psaltis, Demetri

    2011-03-15

    Lenses allow the formation of clear images in homogeneous linear media. Holography is an alternative imaging method, but its use is limited to cases in which it provides an advantage, such as three-dimensional imaging. In nonlinear media, lenses no longer work. The light produces intensity-dependent aberrations. The reverse propagation method used in digital holography to form images from recorded holograms works even in Kerr media [M. Tsang, D. Psaltis, and F. G. Omenetto, Opt. Lett. 28, 1873 (2003).]. The principle has been experimentally demonstrated recently in defocusing media [C. Barsi, W.Wan, and J.W. Fleischer, Nat. Photonics 3, 211 (2009).]. Here, we report experimental results in focusing media.

  2. Storage and retrieval of large digital images

    DOE Patents [OSTI]

    Bradley, J.N.

    1998-01-20

    Image compression and viewing are implemented with (1) a method for performing DWT-based compression on a large digital image with a computer system possessing a two-level system of memory and (2) a method for selectively viewing areas of the image from its compressed representation at multiple resolutions and, if desired, in a client-server environment. The compression of a large digital image I(x,y) is accomplished by first defining a plurality of discrete tile image data subsets T{sub ij}(x,y) that, upon superposition, form the complete set of image data I(x,y). A seamless wavelet-based compression process is effected on I(x,y) that is comprised of successively inputting the tiles T{sub ij}(x,y) in a selected sequence to a DWT routine, and storing the resulting DWT coefficients in a first primary memory. These coefficients are periodically compressed and transferred to a secondary memory to maintain sufficient memory in the primary memory for data processing. The sequence of DWT operations on the tiles T{sub ij}(x,y) effectively calculates a seamless DWT of I(x,y). Data retrieval consists of specifying a resolution and a region of I(x,y) for display. The subset of stored DWT coefficients corresponding to each requested scene is determined and then decompressed for input to an inverse DWT, the output of which forms the image display. The repeated process whereby image views are specified may take the form an interaction with a computer pointing device on an image display from a previous retrieval. 6 figs.

  3. Storage and retrieval of large digital images

    DOE Patents [OSTI]

    Bradley, Jonathan N.

    1998-01-01

    Image compression and viewing are implemented with (1) a method for performing DWT-based compression on a large digital image with a computer system possessing a two-level system of memory and (2) a method for selectively viewing areas of the image from its compressed representation at multiple resolutions and, if desired, in a client-server environment. The compression of a large digital image I(x,y) is accomplished by first defining a plurality of discrete tile image data subsets T.sub.ij (x,y) that, upon superposition, form the complete set of image data I(x,y). A seamless wavelet-based compression process is effected on I(x,y) that is comprised of successively inputting the tiles T.sub.ij (x,y) in a selected sequence to a DWT routine, and storing the resulting DWT coefficients in a first primary memory. These coefficients are periodically compressed and transferred to a secondary memory to maintain sufficient memory in the primary memory for data processing. The sequence of DWT operations on the tiles T.sub.ij (x,y) effectively calculates a seamless DWT of I(x,y). Data retrieval consists of specifying a resolution and a region of I(x,y) for display. The subset of stored DWT coefficients corresponding to each requested scene is determined and then decompressed for input to an inverse DWT, the output of which forms the image display. The repeated process whereby image views are specified may take the form an interaction with a computer pointing device on an image display from a previous retrieval.

  4. Digital Architecture – Results From a Gap Analysis

    SciTech Connect (OSTI)

    Oxstrand, Johanna Helene; Thomas, Kenneth David; Fitzgerald, Kirk

    2015-09-01

    The digital architecture is defined as a collection of IT capabilities needed to support and integrate a wide-spectrum of real-time digital capabilities for nuclear power plant performance improvements. The digital architecture can be thought of as an integration of the separate I&C and information systems already in place in NPPs, brought together for the purpose of creating new levels of automation in NPP work activities. In some cases, it might be an extension of the current communication systems, to provide digital communications where they are currently analog only. This collection of IT capabilities must in turn be based on a set of user requirements that must be supported for the interconnected technologies to operate in an integrated manner. These requirements, simply put, are a statement of what sorts of digital work functions will be exercised in a fully-implemented seamless digital environment and how much they will be used. The goal of the digital architecture research is to develop a methodology for mapping nuclear power plant operational and support activities into the digital architecture, which includes the development of a consensus model for advanced information and control architecture. The consensus model should be developed at a level of detail that is useful to the industry. In other words, not so detailed that it specifies specific protocols and not so vague that it is only provides a high level description of technology. The next step towards the model development is to determine the current state of digital architecture at typical NPPs. To investigate the current state, the researchers conducted a gap analysis to determine to what extent the NPPs can support the future digital technology environment with their existing I&C and IT structure, and where gaps exist with respect to the full deployment of technology over time. The methodology, result, and conclusions from the gap analysis are described in this report.

  5. Theoretical investigations of defects in a Si-based digital ferromagne...

    Office of Scientific and Technical Information (OSTI)

    digital ferromagnetic heterostructure - a spintronic material Citation Details In-Document Search Title: Theoretical investigations of defects in a Si-based digital ...

  6. REVIEW OF NRC APPROVED DIGITAL CONTROL SYSTEMS ANALYSIS

    SciTech Connect (OSTI)

    D.W. Markman

    1999-09-17

    Preliminary design concepts for the proposed Subsurface Repository at Yucca Mountain indicate extensive reliance on modern, computer-based, digital control technologies. The purpose of this analysis is to investigate the degree to which the U. S. Nuclear Regulatory Commission (NRC) has accepted and approved the use of digital control technology for safety-related applications within the nuclear power industry. This analysis reviews cases of existing digitally-based control systems that have been approved by the NRC. These cases can serve as precedence for using similar types of digitally-based control technologies within the Subsurface Repository. While it is anticipated that the Yucca Mountain Project (YMP) will not contain control systems as complex as those required for a nuclear power plant, the review of these existing NRC approved applications will provide the YMP with valuable insight into the NRCs review process and design expectations for safety-related digital control systems. According to the YMP Compliance Program Guidance, portions of various NUREGS, Regulatory Guidelines, and nuclear IEEE standards the nuclear power plant safety related concept would be applied to some of the designs on a case-by-case basis. This analysis will consider key design methods, capabilities, successes, and important limitations or problems of selected control systems that have been approved for use in the Nuclear Power industry. An additional purpose of this analysis is to provide background information in support of further development of design criteria for the YMP. The scope and primary objectives of this analysis are to: (1) Identify and research the extent and precedence of digital control and remotely operated systems approved by the NRC for the nuclear power industry. Help provide a basis for using and relying on digital technologies for nuclear related safety critical applications. (2) Identify the basic control architecture and methods of key digital control

  7. Optical domain analog to digital conversion methods and apparatus

    DOE Patents [OSTI]

    Vawter, Gregory A

    2014-05-13

    Methods and apparatus for optical analog to digital conversion are disclosed. An optical signal is converted by mapping the optical analog signal onto a wavelength modulated optical beam, passing the mapped beam through interferometers to generate analog bit representation signals, and converting the analog bit representation signals into an optical digital signal. A photodiode receives an optical analog signal, a wavelength modulated laser coupled to the photodiode maps the optical analog signal to a wavelength modulated optical beam, interferometers produce an analog bit representation signal from the mapped wavelength modulated optical beam, and sample and threshold circuits corresponding to the interferometers produce a digital bit signal from the analog bit representation signal.

  8. A Modular, Standards-based Digital Object Repository

    Energy Science and Technology Software Center (OSTI)

    2005-08-01

    The aDORe repository architecture, designed and implemented for ingesting, storing, and accessing a vast collection of Digital Objects. aDORe was originally created for use at the Research Library of the Los Alamos National Laboratory. The aDORe architecture is highly modular and standards-based. In the architecture, the MPEG-21 Digital Item Declaration Language is used as the XML-based format to represent Digital Objects that can consist of multiple datastreams as Open Archival Information System Archival Information Packagesmore » (OAIS AIPs).« less

  9. Feed-forward digital phase and amplitude correction system

    DOE Patents [OSTI]

    Yu, D.U.L.; Conway, P.H.

    1994-11-15

    Phase and amplitude modifications in repeatable RF pulses at the output of a high power pulsed microwave amplifier are made utilizing a digital feed-forward correction system. A controlled amount of the output power is coupled to a correction system for processing of phase and amplitude information. The correction system comprises circuitry to compare the detected phase and amplitude with the desired phase and amplitude, respectively, and a digitally programmable phase shifter and attenuator and digital logic circuitry to control the phase shifter and attenuator. The phase and amplitude of subsequent are modified by output signals from the correction system. 11 figs.

  10. Feed-forward digital phase and amplitude correction system

    DOE Patents [OSTI]

    Yu, David U. L.; Conway, Patrick H.

    1994-01-01

    Phase and amplitude modifications in repeatable RF pulses at the output of a high power pulsed microwave amplifier are made utilizing a digital feed-forward correction system. A controlled amount of the output power is coupled to a correction system for processing of phase and amplitude information. The correction system comprises circuitry to compare the detected phase and amplitude with the desired phase and amplitude, respectively, and a digitally programmable phase shifter and attenuator and digital logic circuitry to control the phase shifter and attenuator. The Phase and amplitude of subsequent are modified by output signals from the correction system.

  11. Bringing a Digital Mindset to Manufacturing | GE Global Research

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

    Bringing a Digital Mindset to Manufacturing Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) Bringing a Digital Mindset to Manufacturing The digital age will provide manufacturing insights that will save money and transform how we work across supply chains. By Christine M. Furstoss Technology Director, Materials &

  12. Digital data storage systems, computers, and data verification methods

    DOE Patents [OSTI]

    Groeneveld, Bennett J.; Austad, Wayne E.; Walsh, Stuart C.; Herring, Catherine A.

    2005-12-27

    Digital data storage systems, computers, and data verification methods are provided. According to a first aspect of the invention, a computer includes an interface adapted to couple with a dynamic database; and processing circuitry configured to provide a first hash from digital data stored within a portion of the dynamic database at an initial moment in time, to provide a second hash from digital data stored within the portion of the dynamic database at a subsequent moment in time, and to compare the first hash and the second hash.

  13. Transient digitizer with displacement current samplers

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1996-01-01

    A low component count, high speed sample gate, and digitizer architecture using the sample gates is based on use of a signal transmission line, a strobe transmission line and a plurality of sample gates connected to the sample transmission line at a plurality of positions. The sample gates include a strobe pickoff structure near the strobe transmission line which generates a charge displacement current in response to propagation of the strobe signal on the strobe transmission line sufficient to trigger the sample gate. The sample gate comprises a two-diode sampling bridge and is connected to a meandered signal transmission line at one end and to a charge-holding cap at the other. The common cathodes are reverse biased. A voltage step is propagated down the strobe transmission line. As the step propagates past a capacitive pickoff, displacement current i=c(dv/dT), flows into the cathodes, driving the bridge into conduction and thereby charging the charge-holding capacitor to a value related to the signal. A charge amplifier converts the charge on the charge-holding capacitor to an output voltage. The sampler is mounted on a printed circuit board, and the sample transmission line and strobe transmission line comprise coplanar microstrips formed on a surface of the substrate. Also, the strobe pickoff structure may comprise a planar pad adjacent the strobe transmission line on the printed circuit board.

  14. Transient digitizer with displacement current samplers

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-05-21

    A low component count, high speed sample gate, and digitizer architecture using the sample gates is based on use of a signal transmission line, a strobe transmission line and a plurality of sample gates connected to the sample transmission line at a plurality of positions. The sample gates include a strobe pickoff structure near the strobe transmission line which generates a charge displacement current in response to propagation of the strobe signal on the strobe transmission line sufficient to trigger the sample gate. The sample gate comprises a two-diode sampling bridge and is connected to a meandered signal transmission line at one end and to a charge-holding cap at the other. The common cathodes are reverse biased. A voltage step is propagated down the strobe transmission line. As the step propagates past a capacitive pickoff, displacement current i=c(dv/dT), flows into the cathodes, driving the bridge into conduction and thereby charging the charge-holding capacitor to a value related to the signal. A charge amplifier converts the charge on the charge-holding capacitor to an output voltage. The sampler is mounted on a printed circuit board, and the sample transmission line and strobe transmission line comprise coplanar microstrips formed on a surface of the substrate. Also, the strobe pickoff structure may comprise a planar pad adjacent the strobe transmission line on the printed circuit board. 16 figs.

  15. Digital Television and Media Innovations | Princeton Plasma Physics...

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

    28, 2007, 4:15pm to 5:15pm Colloquia MBG Auditorium Digital Television and Media Innovations Dr. Michael A. Isnardi Sarnoff Corporation Colloquium Committee: The Princeton Plasma...

  16. OSTIblog Articles in the digitization Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    ... OSTI's most recent contributions to... Related Topics: digitization, DOE Green Energy, preservation, Science.gov, ScienceCinema, ScienceEducation.gov Read more... You Can Be a Part ...

  17. Sandia Lightning Early Warning Network: Digital-based upgrade

    SciTech Connect (OSTI)

    Boyd, G.M.

    1994-05-01

    This report describes the layout and operation of the recently upgraded Sandia Lightning Early Warning Network, which was upgraded from an analog-based to a digital-based telemetry system.

  18. LM Completes X-Ray Film Digitization Project

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Office of Legacy Management (LM) has successfully completed a project to digitize nearly 400,000 medical x‑rays of former DOE contractor employees.

  19. Live Broadcast on Transforming Digital Technologies Across Government

    Broader source: Energy.gov [DOE]

    On Thursday, March 24 at 1:00pm ET, join the Office of the Chief Information Office for a discussion on transforming digital technologies across the federal government.

  20. EERE Website and Digital Media Standards and Guidelines

    Broader source: Energy.gov [DOE]

    Find guidance on the Office of Energy Efficiency and Renewable Energy’s (EERE’s) requirements, standards, and best practices for websites and other digital media such as applications, videos, and social media.

  1. MULTIPLE INPUT BINARY ADDER EMPLOYING MAGNETIC DRUM DIGITAL COMPUTING APPARATUS

    DOE Patents [OSTI]

    Cooke-Yarborough, E.H.

    1960-12-01

    A digital computing apparatus is described for adding a plurality of multi-digit binary numbers. The apparatus comprises a rotating magnetic drum, a recording head, first and second reading heads disposed adjacent to the first and second recording tracks, and a series of timing signals recorded on the first track. A series of N groups of digit-representing signals is delivered to the recording head at time intervals corresponding to the timing signals, each group consisting of digits of the same significance in the numbers, and the signal series is recorded on the second track of the drum in synchronism with the timing signals on the first track. The multistage registers are stepped cyclically through all positions, and each of the multistage registers is coupled to the control lead of a separate gate circuit to open the corresponding gate at only one selected position in each cycle. One of the gates has its input coupled to the bistable element to receive the sum digit, and the output lead of this gate is coupled to the recording device. The inputs of the other gates receive the digits to be added from the second reading head, and the outputs of these gates are coupled to the adding register. A phase-setting pulse source is connected to each of the multistage registers individually to step the multistage registers to different initial positions in the cycle, and the phase-setting pulse source is actuated each N time interval to shift a sum digit to the bistable element, where the multistage register coupled to bistable element is operated by the phase- setting pulse source to that position in its cycle N steps before opening the first gate, so that this gate opens in synchronism with each of the shifts to pass the sum digits to the recording head.

  2. GE's Digital Marketplace to Revolutionize Manufacturing | GE Global

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

    Research GE's Digital Marketplace to Revolutionize Manufacturing Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) GE's Digital Marketplace to Revolutionize Manufacturing GE will lead an effort to create an online community for manufacturing collaboration and data analysis The open source project will build the

  3. Digital-data receiver synchronization method and apparatus

    DOE Patents [OSTI]

    Smith, Stephen F. [Loudon, TN; Turner, Gary W. [Clinton, TN

    2009-09-08

    Digital data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock can be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  4. Digital-data receiver synchronization method and apparatus

    DOE Patents [OSTI]

    Smith, Stephen F.; Turner, Gary W.

    2005-12-06

    Digital-data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock may be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  5. DOE Data ID Service - Digital object identifiers for DOE scientific

    Office of Scientific and Technical Information (OSTI)

    research datasets | OSTI, US Dept of Energy Office of Scientific and Technical Information Data ID Service DataCite | Contact DOE Data ID Service DOE Data ID Service DOE Data ID Service The DOE Office of Scientific and Technical Information (OSTI) offers a service for registering datasets to help increase access to digital data from DOE-funded scientific research. Through the DOE Data ID Service, OSTI assigns persistent identifiers, known as Digital Object Identifiers (DOIs), to datasets

  6. Data Acquisition Scan for Large Area Flat Panel Digital X-ray Detector Array

    Energy Science and Technology Software Center (OSTI)

    2004-05-01

    Interface large area flat panel digital detector and motion control system for computed tomographic data acquisition.

  7. Digital regulation of a phase controlled power converter

    SciTech Connect (OSTI)

    Schultheiss, C.; Haque, T.

    1995-12-01

    The Relativistic Heavy Ion Collider, now in construction at Brookhaven National Laboratory, will use phase controlled power converters for the main dipole and quadrupole magnet strings. The rectifiers in these power supplies will be controlled by a digital regulator based on the TI 320C30 Digital Signal Processor (DSP). The DSP implements the current loop, the voltage loop, and a system to actively reduce the sub-harmonic ripple components. Digital firing circuits consisting of a phase locked lop and counters are used to fire the SCRs. Corrections for the sub-harmonic reduction are calculated by the DSP and stored in registers in the firing circuit. These corrections are added in hardware, to the over-all firing count provided by the DSP. the resultant count is compared to a reference counter to fire the SCRs. This combination of a digital control system and the digital firing circuits allows the correction of the sub-harmonics in a real-time sense. A prototype of the regulator has been constructed, and the preliminary testing indicates a sub-harmonic reduction of 60 dB.

  8. The FBI compression standard for digitized fingerprint images

    SciTech Connect (OSTI)

    Brislawn, C.M.; Bradley, J.N.; Onyshczak, R.J.; Hopper, T.

    1996-10-01

    The FBI has formulated national standards for digitization and compression of gray-scale fingerprint images. The compression algorithm for the digitized images is based on adaptive uniform scalar quantization of a discrete wavelet transform subband decomposition, a technique referred to as the wavelet/scalar quantization method. The algorithm produces archival-quality images at compression ratios of around 15 to 1 and will allow the current database of paper fingerprint cards to be replaced by digital imagery. A compliance testing program is also being implemented to ensure high standards of image quality and interchangeability of data between different implementations. We will review the current status of the FBI standard, including the compliance testing process and the details of the first-generation encoder.

  9. Digital intermediate frequency QAM modulator using parallel processing

    DOE Patents [OSTI]

    Pao, Hsueh-Yuan; Tran, Binh-Nien

    2008-05-27

    The digital Intermediate Frequency (IF) modulator applies to various modulation types and offers a simple and low cost method to implement a high-speed digital IF modulator using field programmable gate arrays (FPGAs). The architecture eliminates multipliers and sequential processing by storing the pre-computed modulated cosine and sine carriers in ROM look-up-tables (LUTs). The high-speed input data stream is parallel processed using the corresponding LUTs, which reduces the main processing speed, allowing the use of low cost FPGAs.

  10. Digital Twins of physical assets prevents unplanned downtime | GE Global

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

    Research a 'Digital Twin' for physical assets can help achieve no unplanned downtime Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) How a 'Digital Twin' for physical assets can help achieve no unplanned downtime Mark Grabb and Matt Nielsen, data scientists at GE Global Research, explain the importance of data

  11. Integrated digital metamaterials enables ultra-compact optical diodes

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Shen, Bing; Polson, Randy; Menon, Rajesh

    2015-01-01

    We applied nonlinear optimization to design integrated digital metamaterials in silicon for unidirectional energy flow. Two devices, one for each polarization state, were designed, fabricated, and characterized. Both devices offer comparable or higher transmission efficiencies and extinction ratios, are easier to fabricate, exhibit larger bandwidths and are more tolerant to fabrication errors, when compared to alternatives. Furthermore, each device footprint is only 3?m 3?m, which is the smallest optical diode ever reported. To illustrate the versatility of digital metamaterials, we also designed a polarization-independent optical diode.

  12. Transmission of digital images within the NTSC analog format

    DOE Patents [OSTI]

    Nickel, George H.

    2004-06-15

    HDTV and NTSC compatible image communication is done in a single NTSC channel bandwidth. Luminance and chrominance image data of a scene to be transmitted is obtained. The image data is quantized and digitally encoded to form digital image data in HDTV transmission format having low-resolution terms and high-resolution terms. The low-resolution digital image data terms are transformed to a voltage signal corresponding to NTSC color subcarrier modulation with retrace blanking and color bursts to form a NTSC video signal. The NTSC video signal and the high-resolution digital image data terms are then transmitted in a composite NTSC video transmission. In a NTSC receiver, the NTSC video signal is processed directly to display the scene. In a HDTV receiver, the NTSC video signal is processed to invert the color subcarrier modulation to recover the low-resolution terms, where the recovered low-resolution terms are combined with the high-resolution terms to reconstruct the scene in a high definition format.

  13. Role for Distributed Energy Resources (DER) in the Digital Economy

    SciTech Connect (OSTI)

    Key, Thomas S

    2007-11-01

    A large, and growing, part of the Nation's economy either serves or depends upon the information technology industry. These high-tech or "digital" enterprises are characterized by a dependence on electronic devices, need for completely reliable power supply, and intolerance to any power quality problems. In some cases these enterprises are densely populated with electronic loads and have very high energy usage per square foot. Serving these enterprises presents both electric power and equipment cooling challenges. Traditional electric utilities are often hard-pressed to deliver power that meets the stringent requirements of digital customers, and the economic and social consequences of a service quality or reliability problem can be large. New energy delivery and control options must be developed to effectively serve a digital economy. This report explores how distributed energy resources, partnerships between utility and customer to share the responsibility for service quality, innovative facility designs, higher energy efficiencies and waste-heat utilization can be coupled to meet the needs of a growing digital economy.

  14. Off-axis illumination direct-to-digital holography

    DOE Patents [OSTI]

    Thomas, Clarence E.; Price, Jeffery R.; Voelkl, Edgar; Hanson, Gregory R.

    2004-06-08

    Systems and methods are described for off-axis illumination direct-to-digital holography. A method of recording an off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis, includes: reflecting a reference beam from a reference mirror at a non-normal angle; reflecting an object beam from an object at an angle with respect to an optical axis defined by a focusing lens; focusing the reference beam and the object beam at a focal plane of a digital recorder to form the off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; digitally recording the off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; Fourier analyzing the recorded off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes by transforming axes of the recorded off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes in Fourier space to sit on top of a heterodyne carrier frequency defined as an angle between the reference beam and the object beam; applying a digital filter to cut off signals around an original origin; and then performing an inverse Fourier transform.

  15. Apparatus for direct-to-digital spatially-heterodyned holography

    DOE Patents [OSTI]

    Thomas, Clarence E.; Hanson, Gregory R.

    2006-12-12

    An apparatus operable to record a spatially low-frequency heterodyne hologram including spatially heterodyne fringes for Fourier analysis includes: a laser; a beamsplitter optically coupled to the laser; an object optically coupled to the beamsplitter; a focusing lens optically coupled to both the beamsplitter and the object; a digital recorder optically coupled to the focusing lens; and a computer that performs a Fourier transform, applies a digital filter, and performs an inverse Fourier transform. A reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form a spatially low-frequency heterodyne hologram including spatially heterodyne fringes for Fourier analysis which is recorded by the digital recorder, and the computer transforms the recorded spatially low-frequency heterodyne hologram including spatially heterodyne fringes and shifts axes in Fourier space to sit on top of a heterodyne carrier frequency defined by an angle between the reference beam and the object beam and cuts off signals around an original origin before performing the inverse Fourier transform.

  16. Digital noise generators using one-dimensional chaotic maps

    SciTech Connect (OSTI)

    Martnez-onthe, J. A; Palacios-Luengas, L.; Cruz-Irisson, M.; Vazquez Medina, R.; Daz Mndez, J. A.

    2014-05-15

    This work shows how to improve the statistical distribution of signals produced by digital noise generators designed with one-dimensional (1-D) chaotic maps. It also shows that in a digital electronic design the piecewise linear chaotic maps (PWLCM) should be considered because they do not have stability islands in its chaotic behavior region, as it occurs in the case of the logistic map, which is commonly used to build noise generators. The design and implementation problems of the digital noise generators are analyzed and a solution is proposed. This solution relates the output of PWLCM, usually defined in the real numbers' domain, with a codebook of S elements, previously defined. The proposed solution scheme produces digital noise signals with a statistical distribution close to a uniform distribution. Finally, this work shows that it is possible to have control over the statistical distribution of the noise signal by selecting the control parameter of the PWLCM and using, as a design criterion, the bifurcation diagram.

  17. High-speed digital holography for neutral gas and electron density...

    Office of Scientific and Technical Information (OSTI)

    High-speed digital holography for neutral gas and electron density imaging This content will become publicly available on May 17, 2017 Prev Next Title: High-speed digital ...

  18. PR EPRlNT FUNDAMENTAL CONCEPTS OF DIGITAL IMAGE PROCESSING R...

    Office of Scientific and Technical Information (OSTI)

    ... Englewood Cliffs, NJ: Prentice-Hall, Inc., 1977. 3. Huang, T. S., Picture Processing and Digital Filtering. New York: Springer-Verlag, 1975. 14 4. Pratt, W. K., Digital Image ...

  19. The Sloan Digital Sky Survey COADD: 275 deg{sup 2} of deep Sloan...

    Office of Scientific and Technical Information (OSTI)

    Title: The Sloan Digital Sky Survey COADD: 275 degsup 2 of deep Sloan Digital Sky Survey imaging on stripe 82 We present details of the construction and characterization of the ...

  20. Light Water Reactor Sustainability Program. Digital Architecture Requirements

    SciTech Connect (OSTI)

    Thomas, Kenneth; Oxstrand, Johanna

    2015-03-01

    The Digital Architecture effort is a part of the Department of Energy (DOE) sponsored Light-Water Reactor Sustainability (LWRS) Program conducted at Idaho National Laboratory (INL). The LWRS program is performed in close collaboration with industry research and development (R&D) programs that provides the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants (NPPs). One of the primary missions of the LWRS program is to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. Therefore, a major objective of the LWRS program is the development of a seamless digital environment for plant operations and support by integrating information from plant systems with plant processes for nuclear workers through an array of interconnected technologies. In order to get the most benefits of the advanced technology suggested by the different research activities in the LWRS program, the nuclear utilities need a digital architecture in place to support the technology. A digital architecture can be defined as a collection of information technology (IT) capabilities needed to support and integrate a wide-spectrum of real-time digital capabilities for nuclear power plant performance improvements. It is not hard to imagine that many processes within the plant can be largely improved from both a system and human performance perspective by utilizing a plant wide (or near plant wide) wireless network. For example, a plant wide wireless network allows for real time plant status information to easily be accessed in the control room, field workers’ computer-based procedures can be updated based on the real time plant status, and status on ongoing procedures can be incorporated into smart schedules in the outage command center to allow for more accurate planning of critical tasks. The goal

  1. U-017: HP MFP Digital Sending Software Lets Local Users Obtain Potentially Sensitive Information

    Broader source: Energy.gov [DOE]

    A vulnerability was reported in HP MFP Digital Sending Software. A local user can obtain potentially sensitive information.

  2. T-706: Microsoft Fraudulent Digital Certificate Issued by DigiNotar

    Broader source: Energy.gov [DOE]

    Fraudulent Digital Certificate Issued by DigiNotar, a Certification Authority Present in the Trusted Root Certification Authorities

  3. Microsoft PowerPoint - 12_gary_Tuesday 5-21 Facility Performance...

    National Nuclear Security Administration (NNSA)

    2 * Paper PDF 2 Reporting Statistics for 2012 * 179 facilities reporting in XML 2 (56%) * 5 facilities reporting in XML 1 (2%) * 22 facilities reporting in 80 col (7%) * 114...

  4. VBB-0037 - In the Matter of Gary Roybal | Department of Energy

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

    a petition for Secretarial review of the appeal decision issued to you on June 14, 2001. ... the Secretary will reverse or revise an appeal decision by the Director of the Office of ...

  5. Group\tLeader:\tGrider,\tGary Deputy\tGroup\tLeader:\tRheinheimer,...

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

    ... Sanchez, Leroy S Montoya, Kathy Ann Gonzales, Adrian K Garcia, Eric James Craig, Stephen ... Ann (Lissa) Graham, Nathaniel Richard Harvey, Evan Charles Van Wig, Faith Cao, Lei

  6. Microsoft PowerPoint - 3_Gary and Brian_Wednesday 5-22 Transit...

    National Nuclear Security Administration (NNSA)

    France Germany Italy Japan Kazakhstan Mexico Netherlands China Russia Spain United Kingdom Sweden 5 Natural Uranium Imports ...

  7. Microsoft PowerPoint - 7_GARY_LANGLIE_NMMSS 2014 NRC HEU Report...

    National Nuclear Security Administration (NNSA)

    used as fuel or targets in a research or test reactor (RTR) * HEU is defined as uranium ... used as fuel or targets in a research or test reactor (RTR), the NRC reported on: - ...

  8. Interactive display system having a digital micromirror imaging device

    DOE Patents [OSTI]

    Veligdan, James T.; DeSanto, Leonard; Kaull, Lisa; Brewster, Calvin

    2006-04-11

    A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector cooperates with a digital imaging device, e.g. a digital micromirror imaging device, for projecting an image through the panel for display on the outlet face. The imaging device includes an array of mirrors tiltable between opposite display and divert positions. The display positions reflect an image light beam from the projector through the panel for display on the outlet face. The divert positions divert the image light beam away from the panel, and are additionally used for reflecting a probe light beam through the panel toward the outlet face. Covering a spot on the panel, e.g. with a finger, reflects the probe light beam back through the panel toward the inlet face for detection thereat and providing interactive capability.

  9. NSTX-U Digital Coil Protection System Software Detailed Design

    SciTech Connect (OSTI)

    2014-06-01

    The National Spherical Torus Experiment (NSTX) currently uses a collection of analog signal processing solutions for coil protection. Part of the NSTX Upgrade (NSTX-U) entails replacing these analog systems with a software solution running on a conventional computing platform. The new Digital Coil Protection System (DCPS) will replace the old systems entirely, while also providing an extensible framework that allows adding new functionality as desired.

  10. ANL CT Reconstruction Algorithm for Utilizing Digital X-ray

    Energy Science and Technology Software Center (OSTI)

    2004-05-01

    Reconstructs X-ray computed tomographic images from large data sets known as 16-bit binary sinograms when using a massively parallelized computer architecture such as a Beowuif cluster by parallelizing the X-ray CT reconstruction routine. The algorithm uses the concept of generation of an image from carefully obtained multiple 1-D or 2-D X-ray projections. The individual projections are filtered using a digital Fast Fourier Transform. The literature refers to this as filtered back projection.

  11. Energy Savings Assessment for Digital-to-Analog Converter Boxes

    SciTech Connect (OSTI)

    Cheung, Hoi Ying Iris; Meier, Alan; Brown, Richard

    2011-01-18

    The Digital Television (DTV) Converter Box Coupon Program was administered by the U.S. government to subsidize purchases of digital-to-analog converter boxes, with up to two $40 coupons for each eligible household. In order to qualify as Coupon Eligible Converter Boxes (CECBs), these devices had to meet a number of minimum performance specifications, including energy efficiency standards. The Energy Star Program also established voluntary energy efficiency specifications that are more stringent than the CECB requirements. In this study, we measured the power and energy consumptions for a sample of 12 CECBs (including 6 Energy Star labeled models) in-use in homes and estimated aggregate energy savings produced by the energy efficiency policies. Based on the 35 million coupons redeemed through the end of the program, our analysis indicates that between 2500 and 3700 GWh per year are saved as a result of the energy efficiency policies implemented on digital-to-analog converter boxes. The energy savings generated are equivalent to the annual electricity use of 280,000 average US homes.

  12. Impact of Smoke Exposure on Digital Instrumentation and Control

    SciTech Connect (OSTI)

    Tanaka, Tina J.; Nowlen, Steven P.; Korsah, Kofi; Wood, Richard T.; Antonescu, Christina E.

    2003-08-15

    Smoke can cause interruptions and upsets in active electronics. Because nuclear power plants are replacing analog with digital instrumentation and control systems, qualification guidelines for new systems are being reviewed for severe environments such as smoke and electromagnetic interference. Active digital systems, individual components, and active circuits have been exposed to smoke in a program sponsored by the U.S. Nuclear Regulatory Commission. The circuits and systems were all monitored during the smoke exposure, indicating any immediate effects of the smoke. The results of previous smoke exposure studies have been reported in various publications. The major immediate effect of smoke has been to increase leakage currents and to cause momentary upsets and failures in digital systems. This paper presents new results from conformal coatings, memory chips, and hard drive tests.The best conformal coatings were found to be polyurethane, parylene, and acrylic (when applied by dipping). Conformal coatings can reduce smoke-induced leakage currents and protect against metal loss through corrosion. However conformal coatings are typically flammable, so they do increase material flammability. Some of the low-voltage biased memory chips failed during a combination of high smoke and high humidity. Typically, smoke along with heat and humidity is expected during fire, rather than smoke alone. Thus, due to high sensitivity of digital circuits to heat and humidity, it is hypothesized that the impact of smoke may be secondary.Low-voltage (3.3-V) static random-access memory (SRAMs) were found to be the most vulnerable to smoke. Higher bias voltages decrease the likelihood of failure. Erasable programmable read-only memory (EPROMs) and nonvolatile SRAMs were very smoke tolerant. Failures of the SRAMs occurred when two conditions were present: high density of smoke and high humidity. As the high humidity was present for only part of the test, the failures were intermittent. All

  13. Signal digitizing system and method based on amplitude-to-time optical mapping

    DOE Patents [OSTI]

    Chou, Jason; Bennett, Corey V; Hernandez, Vince

    2015-01-13

    A signal digitizing system and method based on analog-to-time optical mapping, optically maps amplitude information of an analog signal of interest first into wavelength information using an amplitude tunable filter (ATF) to impress spectral changes induced by the amplitude of the analog signal onto a carrier signal, i.e. a train of optical pulses, and next from wavelength information to temporal information using a dispersive element so that temporal information representing the amplitude information is encoded in the time domain in the carrier signal. Optical-to-electrical conversion of the optical pulses into voltage waveforms and subsequently digitizing the voltage waveforms into a digital image enables the temporal information to be resolved and quantized in the time domain. The digital image may them be digital signal processed to digitally reconstruct the analog signal based on the temporal information with high fidelity.

  14. Digital pressure transducer for use at high temperatures

    DOE Patents [OSTI]

    Karplus, H.H.B.

    A digital pressure sensor for measuring fluid pressures at relatively high temperatures includes an electrically conducting fiber coupled to the fluid by a force disc that causes tension in the fiber to be a function of fluid pressure. The tension causes changes in the mechanical resonant frequency of the fiber, which is caused to vibrate in a magnetic field to produce an electrical signal from a positive-feedback amplifier at the resonant frequency. A count of this frequency provides a measure of the fluid pressure.

  15. Digital pressure transducer for use at high temperatures

    DOE Patents [OSTI]

    Karplus, Henry H. B.

    1981-01-01

    A digital pressure sensor for measuring fluid pressures at relatively high temperatures includes an electrically conducting fiber coupled to the fluid by a force disc that causes tension in the fiber to be a function of fluid pressure. The tension causes changes in the mechanical resonant frequency of the fiber, which is caused to vibrate in a magnetic field to produce an electrical signal from a positive-feedback amplifier at the resonant frequency. A count of this frequency provides a measure of the fluid pressure.

  16. Methods and systems for detecting abnormal digital traffic

    DOE Patents [OSTI]

    Goranson, Craig A [Kennewick, WA; Burnette, John R [Kennewick, WA

    2011-03-22

    Aspects of the present invention encompass methods and systems for detecting abnormal digital traffic by assigning characterizations of network behaviors according to knowledge nodes and calculating a confidence value based on the characterizations from at least one knowledge node and on weighting factors associated with the knowledge nodes. The knowledge nodes include a characterization model based on prior network information. At least one of the knowledge nodes should not be based on fixed thresholds or signatures. The confidence value includes a quantification of the degree of confidence that the network behaviors constitute abnormal network traffic.

  17. Automatic ranging circuit for a digital panel meter

    DOE Patents [OSTI]

    Mueller, Theodore R.; Ross, Harley H.

    1976-01-01

    This invention relates to a range changing circuit that operates in conjunction with a digital panel meter of fixed sensitivity. The circuit decodes the output of the panel meter and uses that information to change the gain of an input amplifier to the panel meter in order to insure that the maximum number of significant figures is always displayed in the meter. The circuit monitors five conditions in the meter and responds to any of four combinations of these conditions by means of logic elements to carry out the function of the circuit.

  18. Digital Object Identifier 10.1109/MPE.2015.2397337

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

    ieee power & energy magazine may/june 2015 1540-7977/15©2015IEEE Digital Object Identifier 10.1109/MPE.2015.2397337 Date of publication: 17 April 2015 E ELECTRIC DISTRIBUTION GRID RESEARCH AND DEVELOP- ment (R&D) has long focused on the reliability, affordability, flexibility, and efficiency of electricity delivery for end users; however, this focus has primarily been outside the realm of severe climate events. Due to the increasing frequency and intensity of weather-caused grid outages

  19. Replacing 16 mm film cameras with high definition digital cameras

    SciTech Connect (OSTI)

    Balch, K.S.

    1995-12-31

    For many years 16 mm film cameras have been used in severe environments. These film cameras are used on Hy-G automotive sleds, airborne gun cameras, range tracking and other hazardous environments. The companies and government agencies using these cameras are in need of replacing them with a more cost effective solution. Film-based cameras still produce the best resolving capability, however, film development time, chemical disposal, recurring media cost, and faster digital analysis are factors influencing the desire for a 16 mm film camera replacement. This paper will describe a new camera from Kodak that has been designed to replace 16 mm high speed film cameras.

  20. Digital optical phase conjugation of fluorescence in turbid tissue

    SciTech Connect (OSTI)

    Vellekoop, Ivo M.; Cui Meng; Yang Changhuei

    2012-08-20

    We demonstrate a method for phase conjugating fluorescence. Our method, called reference free digital optical phase conjugation, can conjugate extremely weak, incoherent optical signals. It was used to phase conjugate fluorescent light originating from a bead covered with 0.5 mm of light-scattering tissue. The phase conjugated beam refocuses onto the bead and causes a local increase of over two orders of magnitude in the light intensity. Potential applications are in imaging, optical trapping, and targeted photochemical activation inside turbid tissue.

  1. The wavelet/scalar quantization compression standard for digital fingerprint images

    SciTech Connect (OSTI)

    Bradley, J.N.; Brislawn, C.M.

    1994-04-01

    A new digital image compression standard has been adopted by the US Federal Bureau of Investigation for use on digitized gray-scale fingerprint images. The algorithm is based on adaptive uniform scalar quantization of a discrete wavelet transform image decomposition and is referred to as the wavelet/scalar quantization standard. The standard produces archival quality images at compression ratios of around 20:1 and will allow the FBI to replace their current database of paper fingerprint cards with digital imagery.

  2. Digital Elevation Model, 0.5-m, Barrow Environmental Observatory, Alaska, 2012

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Rowland,Joel; Gangodagamage,Chandana; Wilson,Cathy

    2013-12-08

    The dataset is a digital elevation model, DEM, of a 2km by 7km region in the vicinity of the Barrow Environmental Observatory near Barrow, Ak.

  3. Apparatus for externally controlled closed-loop feedback digital epitaxy

    DOE Patents [OSTI]

    Eres, D.; Sharp, J.W.

    1996-07-30

    A method and apparatus for digital epitaxy are disclosed. The apparatus includes a pulsed gas delivery assembly that supplies gaseous material to a substrate to form an adsorption layer of the gaseous material on the substrate. Structure is provided for measuring the isothermal desorption spectrum of the growth surface to monitor the active sites which are available for adsorption. The vacuum chamber housing the substrate facilitates evacuation of the gaseous material from the area adjacent the substrate following exposure. In use, digital epitaxy is achieved by exposing a substrate to a pulse of gaseous material to form an adsorption layer of the material on the substrate. The active sites on the substrate are monitored during the formation of the adsorption layer to determine if all the active sites have been filled. Once the active sites have been filled on the growth surface of the substrate, the pulse of gaseous material is terminated. The unreacted portion of the gas pulse is evacuated by continuous pumping. Subsequently, a second pulse is applied when availability of active sites is determined by studying the isothermal desorption spectrum. These steps are repeated until a thin film of sufficient thickness is produced. 5 figs.

  4. Apparatus for externally controlled closed-loop feedback digital epitaxy

    DOE Patents [OSTI]

    Eres, Djula; Sharp, Jeffrey W.

    1996-01-01

    A method and apparatus for digital epitaxy. The apparatus includes a pulsed gas delivery assembly that supplies gaseous material to a substrate to form an adsorption layer of the gaseous material on the substrate. Structure is provided for measuring the isothermal desorption spectrum of the growth surface to monitor the active sites which are available for adsorption. The vacuum chamber housing the substrate facilitates evacuation of the gaseous material from the area adjacent the substrate following exposure. In use, digital epitaxy is achieved by exposing a substrate to a pulse of gaseous material to form an adsorption layer of the material on the substrate. The active sites on the substrate are monitored during the formation of the adsorption layer to determine if all the active sites have been filled. Once the active sites have been filled on the growth surface of the substrate, the pulse of gaseous material is terminated. The unreacted portion of the gas pulse is evacuated by continuous pumping. Subsequently, a second pulse is applied when availability of active sites is determined by studying the isothermal desorption spectrum. These steps are repeated until a thin film of sufficient thickness is produced.

  5. Additional Requirements and Guidance for Digital Data Management | U.S. DOE

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

    Office of Science (SC) Opportunities » Additional Requirements and Guidance for Digital Data Management Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Benefits of BER Funding Opportunities Closed Funding Opportunity Announcements (FOAs) Closed Lab Announcements Award Search / Public Abstracts Additional Requirements and Guidance for Digital Data Management Peer Review Policy Grants & Contracts Guidance Laboratory Scientific Focus Area

  6. Additional Requirements and Guidance for Digital Data Management | U.S. DOE

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

    Office of Science (SC) Additional Requirements and Guidance for Digital Data Management Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Closed Funding Opportunity Announcements (FOAs) Closed Lab Announcements Award Search / Public Abstracts Additional Requirements and Guidance for Digital Data Management Peer Review Policies EFRCs FOA Applications from Universities and Other Research Institutions Construction Review

  7. Additional Requirements and Guidance for Digital Data Management | U.S. DOE

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

    Office of Science (SC) Opportunities » Additional Requirements and Guidance for Digital Data Management Fusion Energy Sciences (FES) FES Home About Research Facilities Science Highlights Benefits of FES Funding Opportunities Closed Funding Opportunity Announcements (FOAs) Closed Lab Announcements Award Search / Public Abstracts Additional Requirements and Guidance for Digital Data Management Fusion Energy Sciences Advisory Committee (FESAC) Community Resources Contact Information Fusion

  8. Method and apparatus for digitally based high speed x-ray spectrometer

    DOE Patents [OSTI]

    Warburton, William K.; Hubbard, Bradley

    1997-01-01

    A high speed, digitally based, signal processing system which accepts input data from a detector-preamplifier and produces a spectral analysis of the x-rays illuminating the detector. The system achieves high throughputs at low cost by dividing the required digital processing steps between a "hardwired" processor implemented in combinatorial digital logic, which detects the presence of the x-ray signals in the digitized data stream and extracts filtered estimates of their amplitudes, and a programmable digital signal processing computer, which refines the filtered amplitude estimates and bins them to produce the desired spectral analysis. One set of algorithms allow this hybrid system to match the resolution of analog systems while operating at much higher data rates. A second set of algorithms implemented in the processor allow the system to be self calibrating as well. The same processor also handles the interface to an external control computer.

  9. An overview of digital I and C system reliability analysis in nuclear power plants

    SciTech Connect (OSTI)

    Lu, L.

    2006-07-01

    The transition from analog to digital technology has occurred in industry as a whole. This has left those who still use analog systems in a tough situation because the suppliers are decreasing the amount of service and spare parts that they have on hand for analog systems. Therefore, the transition from analog to digital for the Instrumentation and Control systems in nuclear power plants is of no exception. Since safety is of paramount importance for nuclear industry, the reliability and safety of digital systems should be demonstrated in a systematic manner before they are being adopted. For the simplest digital systems, the hardware reliability and software reliability are two fundamental components for digital system reliability analysis. This paper provides a literature survey on the work that has been performed in this field. (authors)

  10. Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter

    DOE Patents [OSTI]

    Buchenauer, C.J.

    1981-09-23

    The quadrature phase angle phi (t) of a pair of quadrature signals S/sub 1/(t) and S/sub 2/(t) is digitally encoded on a real time basis by a quadrature digitizer for fractional phi (t) rotational excursions and by a quadrature up/down counter for full phi (t) rotations. The pair of quadrature signals are of the form S/sub 1/(t) = k(t) sin phi (t) and S/sub 2/(t) = k(t) cos phi (t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle phi (t).

  11. Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter

    DOE Patents [OSTI]

    Buchenauer, C. Jerald

    1984-01-01

    The quadrature phase angle .phi.(t) of a pair of quadrature signals S.sub.1 (t) and S.sub.2 (t) is digitally encoded on a real time basis by a quadrature digitizer for fractional .phi.(t) rotational excursions and by a quadrature up/down counter for full .phi.(t) rotations. The pair of quadrature signals are of the form S.sub.1 (t)=k(t) sin .phi.(t) and S.sub.2 (t)=k(t) cos .phi.(t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle .phi.(t).

  12. Method and apparatus for digitally based high speed x-ray spectrometer

    DOE Patents [OSTI]

    Warburton, W.K.; Hubbard, B.

    1997-11-04

    A high speed, digitally based, signal processing system which accepts input data from a detector-preamplifier and produces a spectral analysis of the x-rays illuminating the detector. The system achieves high throughputs at low cost by dividing the required digital processing steps between a ``hardwired`` processor implemented in combinatorial digital logic, which detects the presence of the x-ray signals in the digitized data stream and extracts filtered estimates of their amplitudes, and a programmable digital signal processing computer, which refines the filtered amplitude estimates and bins them to produce the desired spectral analysis. One set of algorithms allow this hybrid system to match the resolution of analog systems while operating at much higher data rates. A second set of algorithms implemented in the processor allow the system to be self calibrating as well. The same processor also handles the interface to an external control computer. 19 figs.

  13. Increasing capacity of baseband digital data communication networks

    DOE Patents [OSTI]

    Frankel, R.S.; Herman, A.

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

  14. Increasing capacity of baseband digital data communication networks

    DOE Patents [OSTI]

    Frankel, Robert S.; Herman, Alexander

    1985-01-01

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

  15. Digital microfluidic hub for automated nucleic acid sample preparation.

    SciTech Connect (OSTI)

    He, Jim; Bartsch, Michael S.; Patel, Kamlesh D.; Kittlaus, Eric A.; Remillared, Erin M.; Pezzola, Genevieve L.; Renzi, Ronald F.; Kim, Hanyoup

    2010-07-01

    We have designed, fabricated, and characterized a digital microfluidic (DMF) platform to function as a central hub for interfacing multiple lab-on-a-chip sample processing modules towards automating the preparation of clinically-derived DNA samples for ultrahigh throughput sequencing (UHTS). The platform enables plug-and-play installation of a two-plate DMF device with consistent spacing, offers flexible connectivity for transferring samples between modules, and uses an intuitive programmable interface to control droplet/electrode actuations. Additionally, the hub platform uses transparent indium-tin oxide (ITO) electrodes to allow complete top and bottom optical access to the droplets on the DMF array, providing additional flexibility for various detection schemes.

  16. Automatic Microaneurysm Detection and Characterization Through Digital Color Fundus Images

    SciTech Connect (OSTI)

    Martins, Charles; Veras, Rodrigo; Ramalho, Geraldo; Medeiros, Fatima; Ushizima, Daniela

    2008-08-29

    Ocular fundus images can provide information about retinal, ophthalmic, and even systemic diseases such as diabetes. Microaneurysms (MAs) are the earliest sign of Diabetic Retinopathy, a frequently observed complication in both type 1 and type 2 diabetes. Robust detection of MAs in digital color fundus images is critical in the development of automated screening systems for this kind of disease. Automatic grading of these images is being considered by health boards so that the human grading task is reduced. In this paper we describe segmentation and the feature extraction methods for candidate MAs detection.We show that the candidate MAs detected with the methodology have been successfully classified by a MLP neural network (correct classification of 84percent).

  17. A comparison of the performance of digital mammography systems

    SciTech Connect (OSTI)

    Monnin, P.; Gutierrez, D.; Bulling, S.; Guntern, D.; Verdun, F. R.

    2007-03-15

    An objective analysis of image quality parameters was performed for six digital mammography systems. The presampled modulation transfer function (MTF), normalized noise power spectrum (NNPS), and detective quantum efficiency (DQE) for the systems were determined at different doses, for 28 kVp with a Mo/Mo or W/Al target/filter combination and 2 mm of additional aluminium filtration. The flat-panel units have higher MTF and DQE in the mid to high frequency range than standard CR systems. The highest DQE, over the whole dose range, is for the slit-scanning direct photon counting system. Dual-side read CR can overcome the inherent x-ray absorption and signal collection limitations of standard CR mammography, improving the low-frequency DQE by 40%, to the same level as full-field systems, but it does not improve the poor spatial resolution of phosphor.

  18. Automatic anatomically selective image enhancement in digital chest radiography

    SciTech Connect (OSTI)

    Sezan, M.I. ); Minerbo, G.N. ); Schaetzing, R. )

    1989-06-01

    The authors develop a technique for automatic anatomically selective enhancement of digital chest radiographs. Anatomically selective enhancement is motivated by the desire to simultaneously meet the different enhancement requirements of the lung field and the mediastinum. A recent peak detection algorithm and a set of rules are applied to the image histogram to determine automatically a gray-level threshold between the lung field and mediastinum. The gray-level threshold facilitates anatomically selective gray-scale modification and/or unsharp masking. Further, in an attempt to suppress possible white-band or black-band artifacts due to unsharp masking at sharp edges, local-contrast adaptivity is incorporated into anatomically selective unsharp masking by designing an anatomy-sensitive emphasis parameter which varies asymmetrically with positive and negative values of the local image contrast.

  19. Method for encryption and transmission of digital keying data

    DOE Patents [OSTI]

    Mniszewski, Susan M.; Springer, Edward A.; Brenner, David P.

    1988-01-01

    A method for the encryption, transmission, and subsequent decryption of digital keying data. The method utilizes the Data Encryption Standard and is implemented by means of a pair of apparatus, each of which is selectable to operate as either a master unit or remote unit. Each unit contains a set of key encryption keys which are indexed by a common indexing system. The master unit operates upon command from the remote unit to generate a data encryption key and encrypt the data encryption key using a preselected key encryption key. The encrypted data encryption key and an index designator are then downloaded to the remote unit, where the data encryption key is decrypted for subsequent use in the encryption and transmission data. Downloading of the encrypted data encryption key enables frequent change of keys without requiring manual entry or storage of keys at the remote unit.

  20. Midcontinent Interactive Digital Carbon Atlas and Relational Database (MIDCARB)

    SciTech Connect (OSTI)

    Timothy R. Carr; Scott W. White

    2002-06-01

    This annual report describes progress of the project entitled ''Midcontinent Interactive Digital Carbon Atlas and Relational Database (MIDCARB)''. This project, funded by the Department of Energy, is a cooperative project that assembles a consortium of five states (Indiana, Illinois, Kansas, Kentucky and Ohio) to construct an online distributed Relational Database Management System (RDBMS) and Geographic Information System (GIS) covering aspects of carbon dioxide geologic sequestration (http://www.midcarb.org). The system links the five states in the consortium into a coordinated regional database system consisting of datasets useful to industry, regulators and the public. The project is working to provide advanced distributed computing solutions to link database servers across the five states into a single system where data is maintained at the local level but is accessed through a single Web portal and can be queried, assembled, analyzed and displayed. Each individual state has strengths in data gathering, data manipulation and data display, including GIS mapping, custom application development, web development, and database design. Sharing of expertise provides the critical mass of technical expertise to improve CO{sub 2} databases and data access in all states. This project improves the flow of data across servers in the five states and increases the amount and quality of available digital data. The MIDCARB project is developing improved online tools to provide real-time display and analyze CO{sub 2} sequestration data. The system links together data from sources, sinks and transportation within a spatial database that can be queried online. Visualization of high quality and current data can assist decision makers by providing access to common sets of high quality data in a consistent manner.

  1. Implementation and analysis of an innovative digital charge amplifier for hysteresis reduction in piezoelectric stack actuators

    SciTech Connect (OSTI)

    Bazghaleh, Mohsen Grainger, Steven; Cazzolato, Ben; Lu, Tien-Fu; Oskouei, Reza

    2014-04-15

    Smart actuators are the key components in a variety of nanopositioning applications, such as scanning probe microscopes and atomic force microscopes. Piezoelectric actuators are the most common smart actuators due to their high resolution, low power consumption, and wide operating frequency but they suffer hysteresis which affects linearity. In this paper, an innovative digital charge amplifier is presented to reduce hysteresis in piezoelectric stack actuators. Compared to traditional analog charge drives, experimental results show that the piezoelectric stack actuator driven by the digital charge amplifier has less hysteresis. It is also shown that the voltage drop of the digital charge amplifier is significantly less than the voltage drop of conventional analog charge amplifiers.

  2. Geometric correction and digital elevation extraction using multiple MTI datasets.

    SciTech Connect (OSTI)

    Mercier, Jeffrey Alan; Schowengerdt, Robert A.; Smith, Jody Lynn; Storey, James C.

    2004-08-01

    Digital Elevation Models (DEMs) are traditionally acquired from a stereo pair of aerial photographs sequentially captured by an airborne metric camera. Standard DEM extraction techniques can be naturally extended to satellite imagery, but the particular characteristics of satellite imaging can cause difficulties. The spacecraft ephemeris with respect to the ground site during image collects is the most important factor in the elevation extraction process. When the angle of separation between the stereo images is small, the extraction process typically produces measurements with low accuracy, while a large angle of separation can cause an excessive number of erroneous points in the DEM from occlusion of ground areas. The use of three or more images registered to the same ground area can potentially reduce these problems and improve the accuracy of the extracted DEM. The pointing capability of some sensors, such as the Multispectral Thermal Imager (MTI), allows for multiple collects of the same area from different perspectives. This functionality of MTI makes it a good candidate for the implementation of a DEM extraction algorithm using multiple images for improved accuracy. Evaluation of this capability and development of algorithms to geometrically model the MTI sensor and extract DEMs from multi-look MTI imagery are described in this paper. An RMS elevation error of 6.3-meters is achieved using 11 ground test points, while the MTI band has a 5-meter ground sample distance.

  3. Single beam Fourier transform digital holographic quantitative phase microscopy

    SciTech Connect (OSTI)

    Anand, A. Chhaniwal, V. K.; Mahajan, S.; Trivedi, V.; Faridian, A.; Pedrini, G.; Osten, W.; Dubey, S. K.; Javidi, B.

    2014-03-10

    Quantitative phase contrast microscopy reveals thickness or height information of a biological or technical micro-object under investigation. The information obtained from this process provides a means to study their dynamics. Digital holographic (DH) microscopy is one of the most used, state of the art single-shot quantitative techniques for three dimensional imaging of living cells. Conventional off axis DH microscopy directly provides phase contrast images of the objects. However, this process requires two separate beams and their ratio adjustment for high contrast interference fringes. Also the use of two separate beams may make the system more vulnerable to vibrations. Single beam techniques can overcome these hurdles while remaining compact as well. Here, we describe the development of a single beam DH microscope providing whole field imaging of micro-objects. A hologram of the magnified object projected on to a diffuser co-located with a pinhole is recorded with the use of a commercially available diode laser and an arrayed sensor. A Fourier transform of the recorded hologram directly yields the complex amplitude at the image plane. The method proposed was investigated using various phase objects. It was also used to image the dynamics of human red blood cells in which sub-micrometer level thickness variation were measurable.

  4. Cryogenic CMOS circuits for single charge digital readout.

    SciTech Connect (OSTI)

    Gurrieri, Thomas M.; Longoria, Erin Michelle; Eng, Kevin; Carroll, Malcolm S.; Hamlet, Jason R.; Young, Ralph Watson

    2010-03-01

    The readout of a solid state qubit often relies on single charge sensitive electrometry. However the combination of fast and accurate measurements is non trivial due to large RC time constants due to the electrometers resistance and shunt capacitance from wires between the cold stage and room temperature. Currently fast sensitive measurements are accomplished through rf reflectrometry. I will present an alternative single charge readout technique based on cryogenic CMOS circuits in hopes to improve speed, signal-to-noise, power consumption and simplicity in implementation. The readout circuit is based on a current comparator where changes in current from an electrometer will trigger a digital output. These circuits were fabricated using Sandia's 0.35 {micro}m CMOS foundry process. Initial measurements of comparators with an addition a current amplifier have displayed current sensitivities of < 1nA at 4.2K, switching speeds up to {approx}120ns, while consuming {approx}10 {micro}W. I will also discuss an investigation of noise characterization of our CMOS process in hopes to obtain a better understanding of the ultimate limit in signal to noise performance.

  5. Advanced High-Speed 16-Bit Digitizer System

    SciTech Connect (OSTI)

    2012-05-01

    The fastest commercially available 16-bit ADC can only perform around 200 mega-samples per second (200 MS/s). Connecting ADC chips together in eight different time domains increases the quantity of samples taken by a factor of eight. This method of interleaving requires that the input signal being sampled is split into eight identical signals and arrives at each ADC chip at the same point in time. The splitting of the input signal is performed in the analog front end containing a wideband filter that impedance matches the input signal to the ADC chips. Each ADC uses a clock to tell it when to perform a conversion. Using eight unique clocks spaced in 45-degree increments is the method used to time shift when each ADC chip performs its conversion. Given that this control clock is a fixed frequency, the clock phase shifting is accomplished by tightly controlling the distance that the clock must travel, resulting in a time delay. The interleaved ADC chips will now generate digital data in eight different time domains. These data are processed inside a field-programmable gate array (FPGA) to move the data back into a single time domain and store it into memory. The FPGA also contains a Nios II processor that provides system control and data retrieval via Ethernet.

  6. Ensemble Properties of Comets in the Sloan Digital Sky Survey

    SciTech Connect (OSTI)

    Solontoi, Michael; Ivezic, Zeljko; Juric, Mario; Becker, Andrew C.; Jones, Lynne; West, Andrew A.; Kent, Steve; Lupton, Robert H.; Claire, Mark; Knapp, Gillian R.; Quinn, Tom; /Washington U., Seattle, Astron. Dept. /Princeton U. Observ.

    2012-02-01

    We present the ensemble properties of 31 comets (27 resolved and 4 unresolved) observed by the Sloan Digital Sky Survey (SDSS). This sample of comets represents about 1 comet per 10 million SDSS photometric objects. Five-band (u, g, r, i, z) photometry is used to determine the comets colors, sizes, surface brightness profiles, and rates of dust production in terms of the Afp formalism. We find that the cumulative luminosity function for the Jupiter Family Comets in our sample is well fit by a power law of the form N(

  7. Sloan Digital Sky Survey II (SDSS-II) Supernova Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Sloan Digital Sky Survey (SDSS) is a series of three interlocking imaging and spectroscopic surveys, carried out over an eight-year period with a dedicated 2.5m telescope located at Apache Point Observatory in Southern New Mexico. The SDSS Supernova Survey was one of those three components of SDSS and SDSS-II, a 3-year extension of the original SDSS that operated from July 2005 to July 2008. The Supernova Survey was a time-domain survey, involving repeat imaging of the same region of sky every other night, weather permitting. The primary scientific motivation was to detect and measure light curves for several hundred supernovae through repeat scans of the SDSS Southern equatorial stripe 82 (about 2.5? wide by ~120? long). Over the course of three 3-month campaigns SDSS-II SN discovered and measured multi-band lightcurves for ~500 spectroscopically confirmed Type Ia supernovae in the redshift range z=0.05-0.4. In addition, the project harvested a few hundred light curves for SNe Ia and discovered about 80 spectroscopically confirmed core-collapse supernovae (supernova types Ib/c and II).

  8. Sloan Digital Sky Survey (SDSS): Data Release 2

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Sloan Digital Sky Survey (SDSS) is one of the most ambitious and influential surveys in the history of astronomy.Over eight years of operations (SDSS-I, 2000-2005; SDSS-II, 2005-2008), it obtained deep, multi-color images covering more than a quarter of the sky and created 3-dimensional maps containing more than 930,000 galaxies and more than 120,000 quasars. The SDSS used a dedicated 2.5-meter telescope at Apache Point Observatory, New Mexico, equipped with two powerful special-purpose instruments. SDSS data have supported fundamental work across an extraordinary range of astronomical disciplines, including the properties of galaxies, the evolution of quasars, the structure and stellar populations of the Milky Way, the dwarf galaxy companions of the Milky Way and M31, asteroids and other small bodies in the solar system, and the large scale structure and matter and energy contents of the universe. (Taken from home page of www.sdss.org). DR2 provides provides images, imaging catalogs, spectra, and redshifts for download.

  9. Sloan Digital Sky Survey (SDSS): Data Release 5

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Sloan Digital Sky Survey (SDSS) is one of the most ambitious and influential surveys in the history of astronomy.Over eight years of operations (SDSS-I, 2000-2005; SDSS-II, 2005-2008), it obtained deep, multi-color images covering more than a quarter of the sky and created 3-dimensional maps containing more than 930,000 galaxies and more than 120,000 quasars. The SDSS used a dedicated 2.5-meter telescope at Apache Point Observatory, New Mexico, equipped with two powerful special-purpose instruments. SDSS data have supported fundamental work across an extraordinary range of astronomical disciplines, including the properties of galaxies, the evolution of quasars, the structure and stellar populations of the Milky Way, the dwarf galaxy companions of the Milky Way and M31, asteroids and other small bodies in the solar system, and the large scale structure and matter and energy contents of the universe. (Taken from home page of www.sdss.org). DR5 provides provides images, imaging catalogs, spectra, and redshifts for download.

  10. Sloan Digital Sky Survey (SDSS): Data Release 3

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Sloan Digital Sky Survey (SDSS) is one of the most ambitious and influential surveys in the history of astronomy.Over eight years of operations (SDSS-I, 2000-2005; SDSS-II, 2005-2008), it obtained deep, multi-color images covering more than a quarter of the sky and created 3-dimensional maps containing more than 930,000 galaxies and more than 120,000 quasars. The SDSS used a dedicated 2.5-meter telescope at Apache Point Observatory, New Mexico, equipped with two powerful special-purpose instruments. SDSS data have supported fundamental work across an extraordinary range of astronomical disciplines, including the properties of galaxies, the evolution of quasars, the structure and stellar populations of the Milky Way, the dwarf galaxy companions of the Milky Way and M31, asteroids and other small bodies in the solar system, and the large scale structure and matter and energy contents of the universe. (Taken from home page of www.sdss.org). DR3 provides provides images, imaging catalogs, spectra, and redshifts for download.