National Library of Energy BETA

Sample records for imaging shows feather

  1. X-ray Imaging Shows Feather Patterns of First Birds

    Broader source: Energy.gov [DOE]

    One-hundred million years ago, what did birds look like? Scientists have taken a huge step towards finding the answer, leaving the creative imaginations behind such classics as Jurassic Park, The Land Before Time and Dinotopic to contend with science.

  2. Blackening Character, Imagining Race, and Mapping Morality: Tarring and Feathering in Nineteenth Century American Literature 

    E-Print Network [OSTI]

    Trninic, Marina

    2013-08-05

    This study examines the ritual of tarring and feathering within specific American cultural contexts and literary works of the nineteenth-century to show how the discourse surrounding the actual and figurative practice ...

  3. Coherent light scattering of ultraviolet light by avian feather barbs

    E-Print Network [OSTI]

    Prum, Richard O.; Andersson, Staffan; Torres, Rodolfo H.

    2003-04-05

    Ultraviolet (UV) structural colors of avian feathers are produced by the spongy medullary keratin of feather barbs, but various physical mechanisms have been hypothesized to produce those colors, including Rayleigh scattering, Mie scattering...

  4. Fourier Transform Infrared Imaging Showing Reduced Unsaturated Lipid Content in the Hippocampus of a mouse Model of Alzheimer's Disease

    SciTech Connect (OSTI)

    Leskovjan, A.C.; Kretlow, A.; Miller, L.M.

    2010-04-01

    Polyunsaturated fatty acids are essential to brain functions such as membrane fluidity, signal transduction, and cell survival. It is also thought that low levels of unsaturated lipid in the brain may contribute to Alzheimer's disease (AD) risk or severity. However, it is not known how accumulation of unsaturated lipids is affected in different regions of the hippocampus, which is a central target of AD plaque pathology, during aging. In this study, we used Fourier transform infrared imaging (FTIRI) to visualize the unsaturated lipid content in specific regions of the hippocampus in the PSAPP mouse model of AD as a function of plaque formation. Specifically, the unsaturated lipid content was imaged using the olefinic {double_bond}CH stretching mode at 3012 cm{sup -1}. The axonal, dendritic, and somatic layers of the hippocampus were examined in the mice at 13, 24, 40, and 56 weeks old. Results showed that lipid unsaturation in the axonal layer was significantly increased with normal aging in control (CNT) mice (p < 0.01) but remained low and relatively constant in PSAPP mice. Thus, these findings indicate that unsaturated lipid content is reduced in hippocampal white matter during amyloid pathogenesis and that maintaining unsaturated lipid content early in the disease may be critical in avoiding progression of the disease.

  5. A new method to estimate local pitch angles in spiral galaxies: Application to spiral arms and feathers in M81 and M51

    SciTech Connect (OSTI)

    Puerari, Ivânio; Elmegreen, Bruce G.; Block, David L.

    2014-12-01

    We examine 8 ?m IRAC images of the grand design two-arm spiral galaxies M81 and M51 using a new method whereby pitch angles are locally determined as a function of scale and position, in contrast to traditional Fourier transform spectral analyses which fit to average pitch angles for whole galaxies. The new analysis is based on a correlation between pieces of a galaxy in circular windows of (lnR,?) space and logarithmic spirals with various pitch angles. The diameter of the windows is varied to study different scales. The result is a best-fit pitch angle to the spiral structure as a function of position and scale, or a distribution function of pitch angles as a function of scale for a given galactic region or area. We apply the method to determine the distribution of pitch angles in the arm and interarm regions of these two galaxies. In the arms, the method reproduces the known pitch angles for the main spirals on a large scale, but also shows higher pitch angles on smaller scales resulting from dust feathers. For the interarms, there is a broad distribution of pitch angles representing the continuation and evolution of the spiral arm feathers as the flow moves into the interarm regions. Our method shows a multiplicity of spiral structures on different scales, as expected from gas flow processes in a gravitating, turbulent and shearing interstellar medium. We also present results for M81 using classical 1D and 2D Fourier transforms, together with a new correlation method, which shows good agreement with conventional 2D Fourier transforms.

  6. Employee Show

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

    Where Science Inspires Art Fermilab Employee Art Show 2015 Exhibition Dates -September 18, 2015 November 30, 2015 Reception - September 23, 2015 5 7pm Eligibility: Any current...

  7. Red Feather Lakes, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/WaterEnergy MarketingNewOpenRecycled EnergyButte,Feather

  8. South Feather Water and Power Agency | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS ReportEurope GmbHSolo EnergySouth Carolina/WindChestnutSouth Feather

  9. Colours of feathers and their structural causes in varieties of the budgerigar, Melopsittacus undulatus (Shaw) 

    E-Print Network [OSTI]

    Auber, Ludwig

    Several papers on the microscopical structure and the pigmentation of the feathers of the Budgerigar have already been published. This bird which is so easily bred and which, under selection, has developed a great number ...

  10. Light-weight primitive, feather-weight security a cryptanalytic knock-out

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Light-weight primitive, feather-weight security ­ a cryptanalytic knock-out (Preliminary results) V Kingdom page@cs.bris.ac.uk ABSTRACT In [12], the authors present a new light-weight cryptographic systems; D.4.6 [Security and Protection]: Authentication Keywords Light-weight block cipher, structural

  11. Producing Turkeys for Show 

    E-Print Network [OSTI]

    Thornberry, Fredrick D.

    2005-12-14

    This publication gives the turkey exhibitor complete instructions for purchasing, feeding, housing and caring for show turkeys. There are also helpful tips for transporting and handling birds....

  12. Post-Show Tips

    Broader source: Energy.gov [DOE]

    These guidelines are designed to help you with the post-show process. This page includes tips for tearing down your exhibit, shipping the exhibit, and collecting your bills.

  13. Hide / Show Animal Ethics

    E-Print Network [OSTI]

    New South Wales, University of

    . Administration B. Requested Modification C. Animal Use & Numbers D. Animal Housing E. Animal Location F. Administration B. Requested Modification C. Animal Use & Numbers D. Animal Housing E. Animal Location FHide / Show Animal Ethics Modification for Approved Application You are here: Animal Ethics

  14. This still image was taken from a new NASA movie of the sun based on data from NASA's Solar Dynamics Observatory, or SDO, showing the wide range of wavelengths invisible to the naked eye that the

    E-Print Network [OSTI]

    Faure, Claudie

    This still image was taken from a new NASA movie of the sun based on data from NASA's Solar ­ that the telescope can view. By examining pictures of the sun in a variety of wavelengths, scientists can track how particles and heat move through the sun's atmosphere. In this image, the various invisible wavelengths

  15. Moult speed affects structural feather ornaments in the blue tit M. GRIGGIO,* L. SERRA, D. LICHERI, C. CAMPOMORI & A. PILASTRO

    E-Print Network [OSTI]

    Pilastro, Andrea

    colours with those of control birds. Blue tits were sexually dimorphic on the UV / blue crown are among the commonest sexually selected ornaments in birds (Hausmann et al., 2003; Senar, 2006). Feather; multiple ornaments; photoperiod; sexual selection; structural colours. Abstract Growing evidence suggests

  16. Lead, mercury, cadmium, chromium, and arsenic levels in eggs, feathers, and tissues of Canada geese of the New Jersey Meadowlands

    SciTech Connect (OSTI)

    Tsipoura, Nellie; Burger, Joanna; Environmental and Occupational Health Sciences Institute, Consortium for Risk Evaluation with Stakeholder Participation, Rutgers University, Piscataway, NJ 08854 ; Newhouse, Michael; Jeitner, Christian; Environmental and Occupational Health Sciences Institute, Consortium for Risk Evaluation with Stakeholder Participation, Rutgers University, Piscataway, NJ 08854 ; Gochfeld, Michael; Environmental and Occupational Medicine. Robert Wood Johnson Medical School, 170 Frelinghuysen Road, Piscataway, NJ 08854 ; Mizrahi, David

    2011-08-15

    The New Jersey Meadowlands are located within the heavily urbanized New York/New Jersey Harbor Estuary and have been subject to contamination due to effluent and runoff from industry, traffic, and homes along the Hackensack River and nearby waterways. These extensive wetlands, though heavily impacted by development and pollution, support a wide array of bird and other wildlife species. Persistent contaminants may pose threats to birds in these habitats, affecting reproduction, egg hatchability, nestling survival, and neurobehavioral development. Metals of concern in the Meadowlands include arsenic, cadmium, chromium, lead, and mercury. These metals were analyzed in eggs, feathers, muscle, and liver of Canada geese (Branta canadensis) breeding in four wetland sites. We sampled geese collected during control culling (n=26) and collected eggs from goose nests (n=34). Levels of arsenic were below the minimum quantification level (MQL) in most samples, and cadmium and mercury were low in all tissues sampled. Chromium levels were high in feather samples. Mercury levels in eggs of Canada geese, an almost exclusively herbivorous species, were lower (mean {+-}SE 4.29{+-}0.30 {mu}g/g wet weight) than in eggs of omnivorous mallards (Anas platyrhynchos), and insectivorous red-winged blackbirds (Agelaius phoeniceus) and marsh wrens (Cistothorus palustris) from the Meadowlands, consistent with trophic level differences. However, lead levels were higher in the goose eggs (161{+-}36.7 ng/g) than in the other species. Geese also had higher levels of lead in feathers (1910{+-}386 ng/g) than those seen in Meadowlands passerines. By contrast, muscle and liver lead levels were within the range reported in waterfowl elsewhere, possibly a reflection of metal sequestration in eggs and feathers. Elevated lead levels may be the result of sediment ingestion or ingestion of lead shot and sinkers. Finally, lead levels in goose liver (249{+-}44.7 ng/g) and eggs (161{+-}36.7 ng/g) may pose a risk if consumed frequently by humans. Mill Creek, the site with the most documented prior contamination, had significantly elevated cadmium, chromium, mercury, and lead in goose tissues. - Highlights: {yields} The NJ Meadowlands include extensive wetlands in the urban NYC metropolitan area. {yields} We analyzed eggs, feathers, muscle, and liver of Canada geese at 4 Meadowlands sites. {yields} As, Cd, and Hg were low in all tissues sampled, while Cr was high in feathers. {yields} Pb was higher in goose eggs and feathers than in other Meadowlands bird species. {yields} Pb in muscle and liver was lower and within the range seen in waterfowl elsewhere.

  17. Imaging

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeat Pumps Heat Pumpsfacility doe logo CH2M-WG logoImaging

  18. Imaging

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdahoImaging Print The

  19. Imaging

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdahoImaging Print

  20. Texas Show Steer Breed Classification 

    E-Print Network [OSTI]

    Cleere, Jason; Mazurkiewicz, Jim; Hammack, Stephen P.

    2008-02-28

    With as many as 16 breeds and breed-cross classes in Texas shows, classifying the breed of a show steer is not always easy. Show steers are sorted into breed classes based on visual characteristics, which is often a matter of judgment...

  1. Diarrheal Disease in Show Swine 

    E-Print Network [OSTI]

    Lawhorn, D. Bruce

    2007-02-27

    from the feces of recovered car- rier pigs or from contaminated premises, trailers or scales. Pigs affected with this disease usually become very sick. This organism infects the cells lining the cecum and spiral colon (the same area as whipworms... disease in show pigs. Infection occurs after pigs ingest microscopic whipworm eggs while rooting or eating in a contaminat- ed environment. Whipworm eggs remain viable for as long as 6 years so contaminated premises are an impor- tant source of infection...

  2. Getting the Most Out of a Show

    Broader source: Energy.gov [DOE]

    These guidelines are designed to assist you during the event, in order to get the most out of the showing of your exhibit.

  3. ZEBRAlliance Research Project Shows Promising Results | ORNL

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

    Tennessee homes built with the goal of decreasing the cost of residential ground-source heat pump installation. The project's goal is to show consumers how affordable and...

  4. Dangerous Bodies: Freak Shows, Expression, and Exploitation

    E-Print Network [OSTI]

    Fordham, Brigham A.

    2007-01-01

    Dangerous Bodies: Freak Shows, Expression, and ExploitationR.I. GEN. LAWS § 11-9-1. DANGEROUS BODIES Rhode Island does161 Id. Id. 165 id. 166 Id. DANGEROUS BODIES This argument

  5. Incident Response Planning for Selected Livestock Shows 

    E-Print Network [OSTI]

    Tomascik, Chelsea Roxanne

    2012-02-14

    Incidents affecting the livestock industry are unavoidable in today's society. These incidents can happen at livestock shows across the country putting thousands of exhibitors, visitors, employees and livestock in danger. The purpose of this study...

  6. Content-Aware Image enhancement

    E-Print Network [OSTI]

    Schettini, Raimondo

    Content-Aware Image enhancement R. Schettini www.ivl.disco.unimib.it #12;8 Faculties, 61 Degree Recognition Content-based retrieval Quality Assessment #12;Content-Aware Image Enhancement Presentation Image Processing Content aware image enhancement We focus here on image based features. And show how

  7. Martinkus docos show reality of Afghanistan war

    E-Print Network [OSTI]

    Wapstra, Erik

    Martinkus docos show reality of Afghanistan war By ShAron Webb Journalist John Martinkus reels off the date he was kidnapped in the Iraq war as if it's perma- nently scratched on his brain. "It happened. It was terrible. I thought: Here we go." It's experiences like this that gave credibility to the television war

  8. Indexes for selected equipment show moderate increase

    SciTech Connect (OSTI)

    Farrar, G.

    1997-04-07

    Costs for six selected equipment items used in refining construction operations have been surveyed for the 3 years, 1994--1996. The accompanying table shows Nelson-Farrar equipment indexes for these items of equipment. The six categories of equipment tracked are bubble trays, fractionating towers, tube stills, valves and fittings, tanks and pressure vessels, and non-metallic building materials. Tables also present data on operating costs for materials, labor, and equipment.

  9. SU-E-T-12: A Feasibility Study of Patient Specific QA Using Gafchromic Film of Dynamic Feathering in Junctions of Craniospinal Irradiation

    SciTech Connect (OSTI)

    Stanford, J; Duggar, W; Yang, C

    2014-06-01

    Purpose: Cranio-spinal irradiation is the most complicated format of the conventional external beam radiation therapy because it involves matches of non-coplanar beams which are susceptible to daily setup errors. This study explores the efficacy of Gafchromic film dosimetry to quantitatively verify the junctions for cranio-spinal radiation feathered with field in field technique. Methods: 15cm in thickness of solid water phantom was scanned vertically and exported to the Pinnacle TPS as primary phantom data set. A patient cranio-spinal plan, consisted of two bilateral whole brain beams dynamically matched with a posterior spinal beam using field in field technique, was transferred to the phantom and recalculated for one fraction with set monitor units identical to the original plan. Next, planar dose distribution on the phantom was exported to the FilmQA Pro 2013 software (Ashland, Inc.) in binary format for comparison with the measured dose distribution. An EBT2 film was sandwiched in the middle of the phantom and the phantom was set up according to the QA plan based on the room laser system. The shifts instructions associated with the patient original plan were made and the beams from the patient original plan delivered to the solid water phantom via the record and verify system in QA mode. The dose distribution from the measured film was compared with the planned reference distribution using gamma analysis and profile comparison. Results: Gamma passing rate of 91 % with DTA 3mm and 5% dose difference was obtained within the junction region, significantly greater passing rate above 95 % was obtained in the homogeneous region of the brain field. Conclusion: This study confirms that Gafchromic film dosimetry can be used to validate the efficacy of FIF feathering technique for cranio-spinal treatment. FIF technique with Gafchromic dosimetry may now be the new standard for delivering efficient and accurate cranio-spinal radiation with confidence.

  10. Show Me Ethanol LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS ReportEurope GmbH Jump to: navigation,Show Me Ethanol LLC Jump to:

  11. Content-Aware Image enhancement

    E-Print Network [OSTI]

    Schettini, Raimondo

    1 Content-Aware Image enhancement R. Schettini www.ivl.disco.unimib.it 8 Faculties, 61 Degree Recognition Content-based retrieval Quality Assessment Content-Aware Image Enhancement Presentation Outline Processing Content aware image enhancement We focus here on image based features. And show how to exploit

  12. Fourier plane imaging microscopy

    SciTech Connect (OSTI)

    Dominguez, Daniel, E-mail: daniel.dominguez@ttu.edu; Peralta, Luis Grave de [Department of Physics, Texas Tech University, Lubbock, Texas 79409 (United States); Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 (United States); Alharbi, Nouf; Alhusain, Mdhaoui [Department of Physics, Texas Tech University, Lubbock, Texas 79409 (United States); Bernussi, Ayrton A. [Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 (United States); Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas 79409 (United States)

    2014-09-14

    We show how the image of an unresolved photonic crystal can be reconstructed using a single Fourier plane (FP) image obtained with a second camera that was added to a traditional compound microscope. We discuss how Fourier plane imaging microscopy is an application of a remarkable property of the obtained FP images: they contain more information about the photonic crystals than the images recorded by the camera commonly placed at the real plane of the microscope. We argue that the experimental results support the hypothesis that surface waves, contributing to enhanced resolution abilities, were optically excited in the studied photonic crystals.

  13. Figure 1. Schematic drawing showing the components of a Li-ion battery cell and the information that can be

    E-Print Network [OSTI]

    showing the concept of the smallest working battery based on a single nanowire (left). TEM image of the Sn transmission electron microscopy (TEM) imaging of the electrode during the battery's operation. EssentiallyFigure 1. Schematic drawing showing the components of a Li-ion battery cell and the information

  14. Cover Image: The cover shows the crystal structure of the alanate NaAlH4,

    E-Print Network [OSTI]

    ) - p13 (top): The estimated power output from 10% efficient solar cells covering 1.7% of the land area, Argonne National Laboratory Michelle Buchanan, Oak Ridge National Laboratory Panel Chairs: Production Tom efficiency of improved gasoline vehicles, this reduction in petroleum use would require the annual production

  15. Diffusion Spectrum Imaging Shows the Structural Basis of Functional Cerebellar Circuits in the Human

    E-Print Network [OSTI]

    Hadjikhani, Nouchine

    Meyer5 , Reto Meuli6 , Van Wedeen3 , Gunnar Krueger7 1 Department of Neurology, Centre Hospitalier Hospitalier Universitaire Vaudois, Lausanne, Switzerland, 7 Siemens Schweiz AG, Healthcare Sector IM&WS S for diagnosis and management of cerebellar diseases. Objectives: To define the anatomy of intrinsic

  16. Test Images

    E-Print Network [OSTI]

    Test Images. I hope to have a set of test images for the course soon. Some images are available now; some will have to wait until I can find another 100-200

  17. Efficient MR Image Reconstruction for Compressed MR Imaging

    E-Print Network [OSTI]

    Huang, Junzhou

    demonstrate the superior performance of the proposed algorithm for com- pressed MR image reconstruction. 1 [1][2] show that it is possi- ble to accurately reconstruct the Magnetic Resonance (MR) images from for real MR images. Computation became the bottleneck that prevented this good model (1) from being used

  18. Biomechanics Volumetric imaging of fish

    E-Print Network [OSTI]

    Lauder, George V.

    Biomechanics Volumetric imaging of fish locomotion Brooke E. Flammang1,*, George V. Lauder1, Daniel stability in a complex fluid environ- ment. We used a new approach, a volumetric velocimetry imaging system into the caudal fin vortex wake. These results show that volumetric imaging of biologi- cally generated flow

  19. Study Shows Significant Economic Impact from Recovery Act | Department...

    Office of Environmental Management (EM)

    Study Shows Significant Economic Impact from Recovery Act Study Shows Significant Economic Impact from Recovery Act A study recently released shows the 1.6 billion the Savannah...

  20. Current State and Research Trend in the Image Database Systems Peter L. Stanchev, David Green Jr.

    E-Print Network [OSTI]

    Stanchev, Peter

    Maxwell showed in the late nineteen century that every color image cough be created using three images

  1. Secretary Chu Tours the 2013 Washington Auto Show | Department...

    Energy Savers [EERE]

    Tours the 2013 Washington Auto Show Secretary Chu Tours the 2013 Washington Auto Show January 31, 2013 - 5:04pm Addthis 1 of 10 While at the Washington Auto Show, Energy Secretary...

  2. Image alignment

    DOE Patents [OSTI]

    Dowell, Larry Jonathan

    2014-04-22

    Disclosed is a method and device for aligning at least two digital images. An embodiment may use frequency-domain transforms of small tiles created from each image to identify substantially similar, "distinguishing" features within each of the images, and then align the images together based on the location of the distinguishing features. To accomplish this, an embodiment may create equal sized tile sub-images for each image. A "key" for each tile may be created by performing a frequency-domain transform calculation on each tile. A information-distance difference between each possible pair of tiles on each image may be calculated to identify distinguishing features. From analysis of the information-distance differences of the pairs of tiles, a subset of tiles with high discrimination metrics in relation to other tiles may be located for each image. The subset of distinguishing tiles for each image may then be compared to locate tiles with substantially similar keys and/or information-distance metrics to other tiles of other images. Once similar tiles are located for each image, the images may be aligned in relation to the identified similar tiles.

  3. Smart Surface and Lubrication Engineering show Promise for Gearbox...

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

    Smart Surface and Lubrication Engineering show Promise for Gearbox Reliability Smart Surface and Lubrication Engineering show Promise for Gearbox Reliability May 20, 2011 - 1:10pm...

  4. Energy Innovation Hub Report Shows Philadelphia-area Building...

    Office of Environmental Management (EM)

    Innovation Hub Report Shows Philadelphia-area Building Retrofits Could Support 23,500 Jobs Energy Innovation Hub Report Shows Philadelphia-area Building Retrofits Could Support...

  5. Federal Energy Management Trade Show | Department of Energy

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

    Federal Energy Management Trade Show Federal Energy Management Trade Show Addthis 1 of 4 Timothy Unruh, Program Manager for the Office of Energy Efficiency and Renewable Energy...

  6. New Report Shows Trend Toward Larger Offshore Wind Systems, with...

    Office of Environmental Management (EM)

    New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters New Report Shows Trend Toward Larger Offshore Wind Systems, with...

  7. Geothermal Energy Featured on NBC's Today Show | Department of...

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

    Featured on NBC's Today Show Geothermal Energy Featured on NBC's Today Show November 18, 2008 - 2:49pm Addthis In Iceland, there are five major geothermal power plants which...

  8. New Report Shows Trend Toward Larger Offshore Wind Systems, with...

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

    Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters New Report Shows Trend Toward Larger Offshore Wind Systems, with 11...

  9. Latest Report Shows Cost of Going Solar has Dropped Significantly...

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

    Latest Report Shows Cost of Going Solar has Dropped Significantly for 5 Years Latest Report Shows Cost of Going Solar has Dropped Significantly for 5 Years August 12, 2015 - 2:28pm...

  10. New Report Shows Downward Trend in LCOE for Wind | Department...

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

    Report Shows Downward Trend in LCOE for Wind New Report Shows Downward Trend in LCOE for Wind May 18, 2015 - 2:48pm Addthis A new report recently published by the U.S. Department...

  11. New Report Shows Domestic Offshore Wind Industry Potential, 21...

    Office of Environmental Management (EM)

    Report Shows Domestic Offshore Wind Industry Potential, 21 Projects Planned in U.S. Waters New Report Shows Domestic Offshore Wind Industry Potential, 21 Projects Planned in U.S....

  12. Androgynous Beauty, Virtual Community: Stardom, Fandom and Chinese Reality Shows under Globalization

    E-Print Network [OSTI]

    Xiao, Hui Faye

    2012-01-01

    the cultural binaries of “Chinese versus the foreign Other” as gender dichotomies. Th e warm reception of Li’s androgynous image among global Chinese communities revealed constant border-cross- ing cultural fl ows and integrations in the East Asian region... Androgynous Beauty, Virtual Sisterhood Stardom, Fandom, and Chinese Talent Shows under Globalization hui faye xiao In the future, everyone will be world-famous for 15 minutes. —Andy Warhol, exhibition catalog (1968) [P]opular culture always has its base...

  13. Thermal ghost imaging with averaged speckle patterns

    E-Print Network [OSTI]

    Shapiro, Jeffrey H.

    We present theoretical and experimental results showing that a thermal ghost imaging system can produce images of high quality even when it uses detectors so slow that they respond only to intensity-averaged (that is, ...

  14. Supplemental Material for "Efficient MR Image Reconstruction for Compressed MR Imaging"

    E-Print Network [OSTI]

    Huang, Junzhou

    D MR images: cardiac, brain, chest and artery respectively. Figure 1, 2, 3 and 4 shows the visual complexity. (a) (b) (c) (d) (e) (f) Fig. 1. Cardiac MR image reconstruction from 20% sampling (a) OriginalSupplemental Material for "Efficient MR Image Reconstruction for Compressed MR Imaging" Paper ID

  15. Sandia Energy - New Material Tests Show Biaxial Laminate Creep...

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

    Material Tests Show Biaxial Laminate Creep Is Important for Large Wind-Turbine Blades Home Renewable Energy Energy Partnership News Wind Energy News & Events New Material Tests...

  16. ORISE: Report shows nuclear engineering graduation rates leveling...

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

    ORISE report shows nuclear engineering graduation rates leveling off in 2014 after five years of increase Decline seen in undergraduate and master degrees, while number of doctoral...

  17. ORISE: Report shows nuclear engineering graduation rates on the...

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

    ORISE report shows nuclear engineering graduation rates on the rise in 2013 Number of graduate degrees expected to remain consistent, but undergraduate degrees could see decrease...

  18. SLIDESHOW: Secretary Moniz Tours 2014 Washington Auto Show

    Broader source: Energy.gov [DOE]

    A slideshow featuring highlights from Secretary Moniz's tour of the 2014 Washington Auto Show is currently posted on the Energy Department's blog.

  19. NREL: Technology Transfer - New Video Shows How NREL Is Redefining...

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

    New Video Shows How NREL Is Redefining What's Possible for Renewable Energy Through Grid Integration January 23, 2015 NREL is spearheading engineering innovations that will help...

  20. Sandia Energy - Biofuels Blend Right In: Researchers Show Ionic...

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

    Biofuels Blend Right In: Researchers Show Ionic Liquids Effective for Pretreating Mixed Blends of Biofuel Feedstocks Home Renewable Energy Energy Transportation Energy Biofuels...

  1. Ancient bacteria show evidence of DNA repair Sarah Stewart Johnson*

    E-Print Network [OSTI]

    Nielsen, Rasmus

    Ancient bacteria show evidence of DNA repair Sarah Stewart Johnson* , Martin B. Hebsgaard , Torben for review June 14, 2007) Recent claims of cultivable ancient bacteria within sealed environ- ments highlight-term survival of bacteria sealed in frozen conditions for up to one million years. Our results show evidence

  2. (25) 1. Show that for all sets A and B,

    E-Print Network [OSTI]

    (15) 2 . (a) Show that for all sets A and B,. (A; u @(B) 5- @(AvB). (15) (b) Show b constru tin a counter exam 1e that it is not. Y 6% g P the case that (AU B) c @(A) ...

  3. Biological Monitoring at Amchitka Appears to Show Impacts from...

    Office of Environmental Management (EM)

    of the monitoring showed that Dolly Varden (a type of freshwater char, a trout-like fish), rockweed (littoral-zone algae), and to a lesser extent, Irish Lord (a small...

  4. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

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

    Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported...

  5. New Report Shows Trend Toward Larger Offshore Wind Systems

    Broader source: Energy.gov [DOE]

    The Energy Department released a new report showing progress for the U.S. offshore wind energy market in 2012, including 11 commercial-scale U.S. projects reaching an advanced stage of development.

  6. Appointment Scheduling under Patient Preference and No-Show Behavior

    E-Print Network [OSTI]

    Topaloglu, Huseyin

    and managing per capita cost of care; see Berwick et al. (2008) and Institute for Healthcare Improvement (2012. The service provider collects a "revenue" from each patient who shows up and incurs a "service cost

  7. Does Roush show that evidence should be probable?

    E-Print Network [OSTI]

    Fennell, Damien; Cartwright, Nancy

    2010-01-01

    DOI 10.1007/s11229-009-9510-3 Does Roush show that evidencecondition. However, he does not adopt a condition similar toprovide leverage. She does not want P(h) to be presupposed

  8. Secretary Chu Speaks at the 2010 Washington Auto Show

    Broader source: Energy.gov [DOE]

    at the 2010 Washington Auto Show, Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need. He also announced that the Department of Energy had...

  9. Global Climate Change Assessment Report Shows Nations Not Doing...

    Open Energy Info (EERE)

    Global Climate Change Assessment Report Shows Nations Not Doing Enough Home > Blogs > Dc's blog Dc's picture Submitted by Dc(266) Contributor 5 November, 2014 - 15:49 The latest...

  10. Boron-Nitride Nanotubes Show Potential in Cancer Treatment |...

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

    Boron-Nitride Nanotubes Show Potential in Cancer Treatment NEWPORT NEWS, VA, April 26 - A new study has shown that adding boron-nitride nanotubes to the surface of cancer cells can...

  11. The Chemistry Magic Show Captivates Kids | GE Global Research

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

    Chemistry Magic Show Captivates Kids 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...

  12. ORISE: Report shows number of health physics degrees for 2010

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

    report shows number of health physics degrees increased for graduates, decreased for undergraduates in 2010 Decreased number of B.S. degrees remains higher than levels in the early...

  13. Show No Weakness: Sequentially Consistent Specifications of TSO Libraries

    E-Print Network [OSTI]

    Gotsman, Alexey

    Show No Weakness: Sequentially Consistent Specifications of TSO Libraries Alexey Gotsman1.g., for those that are data-race free (DRF). However, performance-critical libraries often violate, it is important for these libraries to protect their otherwise well-behaved clients from the weaker memory model

  14. New World cattle show ancestry from multiple independent domestication events

    E-Print Network [OSTI]

    Hillis, David

    New World cattle show ancestry from multiple independent domestication events Emily Jane Mc December 17, 2012) Previous archeological and genetic research has shown that modern cattle breeds in taurine and indicine lines of cattle, respectively. American descendants of cattle brought by European

  15. ORIGINAL ARTICLE Isolation of Enterobacter cowanii from Eucalyptus showing

    E-Print Network [OSTI]

    ORIGINAL ARTICLE Isolation of Enterobacter cowanii from Eucalyptus showing symptoms of bacterial Eucalyptus grandis trees in Uruguay commonly exhibit symptoms of leaf blight and dieback disease. The cause ananatis, the causal agent of bacterial blight and dieback on Eucalyptus in South Africa (Coutin- ho et al

  16. Schematic structure of nitrogen-doped graphene showing carbon

    E-Print Network [OSTI]

    Gong, Jian Ru

    method for graphene doping, and is compatible with current complementary metal oxide semiconductor (CMOSSchematic structure of nitrogen- doped graphene showing carbon (gray) and nitrogen (blue) NPG Asia Materials research highlight | doi:10.1038/asiamat.2010.204 Published online 13 December 2010 Graphene

  17. Los Alamos Shows Airport Security Technology at Work

    ScienceCinema (OSTI)

    Espy, Michelle; Schultz, Larry; Hunter, James

    2014-06-24

    Los Alamos scientists have advanced a Magnetic Resonance Imaging (MRI) technology that may provide a breakthrough for screening liquids at airport security. They've added low-power X-ray data to the mix, and as a result have unlocked a new detection technology. Funded in part by the Department of Homeland Security's Science and Technology Directorate, the new system is named MagRay. The goal is to quickly and accurately distinguish between liquids that visually appear identical. For example, what appears to be a bottle of white wine could potentially be nitromethane, a liquid that could be used to make an explosive. Both are clear liquids, one would be perfectly safe on a commercial aircraft, the other would be strictly prohibited. How to tell them apart quickly without error at an airport security area is the focus of Michelle Espy, Larry Schultz and their team. In this video, Espy and the MagRay team explain how the new technology works, how they've developed an easy operator interface, and what the next steps might be in transitioning this technology to the private sector.

  18. CASSINI VIMS OBSERVATIONS SHOW ETHANE IS PRESENT IN TITAN'S RAINFALL

    SciTech Connect (OSTI)

    Dalba, Paul A.; Buratti, Bonnie J.; Baines, Kevin H.; Sotin, Christophe; Lawrence, Kenneth J.; Brown, Robert H.; Barnes, Jason W.; Clark, Roger N.; Nicholson, Philip D.

    2012-12-20

    Observations obtained over two years by the Cassini Imaging Science Subsystem suggest that rain showers fall on the surface. Using measurements obtained by the Visual Infrared Mapping Spectrometer, we identify the main component of the rain to be ethane, with methane as an additional component. We observe five or six probable rainfall events, at least one of which follows a brief equatorial cloud appearance, suggesting that frequent rainstorms occur on Titan. The rainfall evaporates, sublimates, or infiltrates on timescales of months, and in some cases it is associated with fluvial features but not with their creation or alteration. Thus, Titan exhibits frequent 'gentle rainfall' instead of, or in addition to, more catastrophic events that cut rivers and lay down large fluvial deposits. Freezing rain may also be present, and the standing liquid may exist as puddles interspersed with patches of frost. The extensive dune deposits found in the equatorial regions of Titan imply multi-season arid conditions there, which are consistent with small, but possibly frequent, amounts of rain, in analogy to terrestrial deserts.

  19. Secretary Chu Speaks at the 2010 Washington Auto Show

    SciTech Connect (OSTI)

    Secretary Chu

    2010-02-03

    Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need at the 2010 Washington Auto Show. He also announced that the Department of Energy had closed on a $1.4 billion loan to Nissan to build the all-electric LEAF in Tennessee and create up to 1,300 American jobs.

  20. Secretary Chu Speaks at the 2010 Washington Auto Show

    ScienceCinema (OSTI)

    Secretary Chu

    2010-09-01

    Secretary Chu lays out a roadmap for how the U.S. can lead the world in making the clean vehicles we need at the 2010 Washington Auto Show. He also announced that the Department of Energy had closed on a $1.4 billion loan to Nissan to build the all-electric LEAF in Tennessee and create up to 1,300 American jobs.

  1. Interactive Map Shows Geothermal Resources | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIAL TECHNICAL8-02Department ofInversionsInteractive Map Shows

  2. Imaging Scatterometry

    E-Print Network [OSTI]

    Madsen, Morten Hannibal

    2015-01-01

    We present an optical metrology system for characterization of topography of micro/nano-structures on a surface or embedded in a semi-transparent material. Based on the principles of scatterometry, where the intensity of scattered light is used as a 'fingerprint' to reconstruct a surface, this new imaging scatterometer can easily find areas of interest on the cm scale and measure multiple segments simultaneously. The imaging scatterometer measures structural features, such as height, width, and sidewall angle of a grating locally on few um2 areas with nm resolution. We demonstrate two imaging scatterometers, one built into an optical microscope and one in a split configuration. The two scatterometers are targeted characterization of mm2 and cm2 areas, respectively, and both setups are validated using nano-textured samples.

  3. JSON shows incomplete info | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EAInvervar Hydro Jump to: navigation,Jump to:Corp JumpJSON shows

  4. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalentLaboratory |Sectorfor $1.14Dynein Motor Domain Shows

  5. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalentLaboratory |Sectorfor $1.14Dynein Motor Domain ShowsDynein

  6. Measuring Political Polarization: Twitter shows the two sides of Venezuela

    E-Print Network [OSTI]

    Morales, A J; Losada, J C; Benito, R M

    2015-01-01

    We say that a population is perfectly polarized when divided in two groups of the same size and opposite opinions. In this paper, we propose a methodology to study and measure the emergence of polarization from social interactions. We begin by proposing a model to estimate opinions in which a minority of influential individuals propagate their opinions through a social network. The result of the model is an opinion probability density function. Next, we propose an index to quantify the extent to which the resulting distribution is polarized. Finally, we apply the proposed methodology to a Twitter conversation about the late Venezuelan president, Hugo Ch\\'avez, finding a good agreement between our results and offline data. Hence, we show that our methodology can detect different degrees of polarization, depending on the structure of the network.

  7. Nuclear Imaging | Jefferson Lab

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

    Research Jefferson Lab's Radiation Detector and Imaging Group Members of Jefferson Lab's Radiation Detector & Medical Imaging Group design and build unique imaging devices based on...

  8. Camera-Based Document Image Mosaicing In this paper we present an image mosaicing method for

    E-Print Network [OSTI]

    DeMenthon, Daniel

    generation. Its success depends on two key components: image registration and image blending. The first aims seamless blending across the border and within. Exper- iments show that our approach can produce a very problems in image blend- ing that have not been well addressed. First, the light- ing is inconsistent

  9. Imaging bolometer

    DOE Patents [OSTI]

    Wurden, Glen A. (Los Alamos, NM)

    1999-01-01

    Radiation-hard, steady-state imaging bolometer. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas.

  10. Imaging bolometer

    DOE Patents [OSTI]

    Wurden, G.A.

    1999-01-19

    Radiation-hard, steady-state imaging bolometer is disclosed. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas. 2 figs.

  11. Show menu | ScienceDaily home page RSS feeds | Free newsletter MODIS satellite image of the Aegean Sea. (Credit

    E-Print Network [OSTI]

    Rohling, Eelco

    by the occurrence of organic compounds synthesized by green sulphur bacteria that require both sulphide and light productivity occurs. However, releases of freshwater to the ocean reduce the sea surface density, which in turn

  12. RSNA 2002: Image Fusion Image Fusion

    E-Print Network [OSTI]

    Pelizzari, Charles A.

    RSNA 2002: Image Fusion Image Fusion: Introduction to the Technology Charles A. Pelizzari, Ph.D. Department of Radiation and Cellular Oncology The University of Chicago #12;RSNA 2002: Image Fusion "Fusion and limitations) ·Where do we need to go? (future directions) #12;RSNA 2002: Image Fusion Terminology

  13. Image Gallery

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdaho NationalA pIlyaImage

  14. Hog Show 

    E-Print Network [OSTI]

    2009-01-01

    STATION . AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS W. B. BIZZELL. Preefdent BULLETIN NO. 286 JANUARY, 1922 DIVISION OF ANIMAL INDUSTRY RICE BRAN FOR FATTENING HOGS I - B. YOUNGBLOOD, DIRECTOR, 30LLEOE STATION, BRAZOS COUNTY, TEXAS STATION... of Veterinary Medicine, A. and M. College of Texas. **In cooperation with United States Department of Agriculture. RICE BRAN FOR FATTENING HOGS. PART I Feeding Value of Rice Bran When Fed in Various Com- binations with Corn Chops and Tankage. PART 11...

  15. Hog Show 

    E-Print Network [OSTI]

    2009-01-01

    STATION AGRICULTU~AL AND MECHANICAL COLLEGE OF TEXAS W. B. BIZZELL, President - BULLETIN NO. 242 MARCH, 1919 DIVISION OF ANIMAL INDUSTRY Hardening Peanut-Fed Hogs B. YOUNGBLOOD, DIRECTOR College Station, Brazos County, Texas / I STATION STAFF... of Agriculture. Objec Plan - - CONTENTS PAGE :ts .................................................... 5 of experiment .......................................... 5 Feeding results . . . . . . . . . . . . . . . . . . . . ... 6 Hogs sold guaranteed...

  16. Light Show

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E C H N13, 2009LienertProducts,

  17. Imaging of semiconductors using a flying laser spot scanning system 

    E-Print Network [OSTI]

    Richardson, Thomas William

    1982-01-01

    in silicon p-n junctions was a direct result of this research. Verification of the experimental findings include analysis using other characterization techniques such as X-ray topo- graphy, electrical testing and preferential chemical etching... Image (I. R. Radiation) . . 22 Flying Spot Scanner Photo Image (Visible Radiation) . 23 15 Photo Image Showing Crystal Defects 24 16 Sirtl Etch Photomicrograph of Lattice Crystal Defects 25 17 Photo Image Showing Laser Induced Lifetime Changes 26...

  18. Radio Tomographic Imaging for Ambient Assisted Living

    E-Print Network [OSTI]

    Patwari, Neal

    radio device. We describe a technique named radio tomographic imaging (RTI), which produces real of people. People's locations are inferred from the estimated RTI images. We show results from a long of the domestic environment, we introduce methods to make the RTI system self-calibrating. Experimental results

  19. From Analog Objects to Digital Images

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    of light, light as wave disturbance and light as quanta of energy. We introduce the concept of light as a wave disturbance to explain the imaging process in a microscope. It shows that the finite aperture of a lens system produces an upper limit to the frequency content of the imaged object. The quantum nature

  20. Sandia Energy - Advanced Imaging

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

    Advanced Imaging Home Transportation Energy Predictive Simulation of Engines Reacting Flow Experiments Advanced Imaging Advanced ImagingAshley Otero2015-10-30T01:47:37+00:00...

  1. Image Georeferencing Lesson 4: Image Georeferencing

    E-Print Network [OSTI]

    Butler, Christopher J.

    vector digitizing. You should read the section "Coordinate Transformation", in Chapter 4 of the GIS georeferencing, also known as image registration or image transformation. We'll then update a data layers through mapping vegetation, wetlands, and land use change. While many images are provided in digital formats

  2. Fermilab | Press Room | Images

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

    Fermilab constructs pioneering accelerator test facility: photos, videos & graphics Click on links below images for medium and high-resolution jpeg images. When using this...

  3. Photoacoustic phasoscopy super-contrast imaging

    SciTech Connect (OSTI)

    Gao, Fei; Feng, Xiaohua; Zheng, Yuanjin, E-mail: yjzheng@ntu.edu.sg [School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 (Singapore)

    2014-05-26

    Phasoscopy is a recently proposed concept correlating electromagnetic (EM) absorption and scattering properties based on energy conservation. Phase information can be extracted from EM absorption induced acoustic wave and scattered EM wave for biological tissue characterization. In this paper, an imaging modality, termed photoacoustic phasoscopy imaging (PAPS), is proposed and verified experimentally based on phasoscopy concept with laser illumination. Both endogenous photoacoustic wave and scattered photons are collected simultaneously to extract the phase information. The PAPS images are then reconstructed on vessel-mimicking phantom and ex vivo porcine tissues to show significantly improved contrast than conventional photoacoustic imaging.

  4. Neutron Imaging of Diesel Particulate Filters | Department of...

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

    Neutron Imaging of Diesel Particulate Filters Neutron computed tomography shows soot and ash loading in a cordierite diesel particulate filter deer09bilheux.pdf More Documents &...

  5. Probabilistic Web Image Gathering

    E-Print Network [OSTI]

    Yanai, Keiji

    1 Probabilistic Web Image Gathering 1. Objective & background 2. Related work 3. Method 4, JAPAN (UEC) (Long-term) Objective of our Web Image Gathering Gather several hundreds of images associated with one concept from the Web without human intervention It's not image search. Non

  6. Seismic Imaging and Monitoring

    SciTech Connect (OSTI)

    Huang, Lianjie

    2012-07-09

    I give an overview of LANL's capability in seismic imaging and monitoring. I present some seismic imaging and monitoring results, including imaging of complex structures, subsalt imaging of Gulf of Mexico, fault/fracture zone imaging for geothermal exploration at the Jemez pueblo, time-lapse imaging of a walkway vertical seismic profiling data for monitoring CO{sub 2} inject at SACROC, and microseismic event locations for monitoring CO{sub 2} injection at Aneth. These examples demonstrate LANL's high-resolution and high-fidelity seismic imaging and monitoring capabilities.

  7. LLNL-Generated Content for the California Academy of Sciences, Morrison Planetarium Full-Dome Show: Earthquake

    SciTech Connect (OSTI)

    Rodgers, A J; Petersson, N A; Morency, C E; Simmons, N A; Sjogreen, B

    2012-01-23

    The California Academy of Sciences (CAS) Morrison Planetarium is producing a 'full-dome' planetarium show on earthquakes and asked LLNL to produce content for the show. Specifically the show features numerical ground motion simulations of the M 7.9 1906 San Francisco and a possible future M 7.05 Hayward fault scenario earthquake. The show also features concepts of plate tectonics and mantle convection using images from LLNL's G3D global seismic tomography. This document describes the data that was provided to the CAS in support of production of the 'Earthquake' show. The CAS is located in Golden Gate Park, San Francisco and hosts over 1.6 million visitors. The Morrison Planetarium, within the CAS, is the largest all digital planetarium in the world. It features a 75-foot diameter spherical section projection screen tilted at a 30-degree angle. Six projectors cover the entire field of view and give a three-dimensional immersive experience. CAS shows strive to use scientifically accurate digital data in their productions. The show, entitled simply 'Earthquake', will debut on 26 May 2012. They are working on graphics and animations based on the same data sets for display on LLNL powerwalls and flat-screens as well as for public release.

  8. First images on the sky from a hyper telescope

    E-Print Network [OSTI]

    E. Pedretti; A. Labeyrie; L. Arnold; N. Thureau; O. Lardiere; A. Boccaletti; P. Riaud

    2000-09-28

    We show star images obtained with a miniature ``densified pupil imaging interferometer'' also called a hyper-telescope. The formation of such images violates a ``golden rule of imaging interferometers'' which appeared to forbid the use of interferometric arrangements differing from a Fizeau interferometer. These produce useless images when the sub-apertures spacing is much wider than their size, owing to diffraction through the sub-apertures. The hyper-telescope arrangement solves these problems opening the way towards multi-kilometer imaging arrays in space. We experimentally obtain an intensity gain of 24 +- 3X when a densified-pupil interferometer is compared to an equivalent Fizeau-type interferometer and show images of the double star alpha Gem. The initial results presented confirm the possibility of directly obtaining high resolution and high dynamic range images in the recombined focal plane of a large interferometer if enough elements are used.

  9. Quantitative imaging of turbulent and reacting flows

    SciTech Connect (OSTI)

    Paul, P.H. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    Quantitative digital imaging, using planar laser light scattering techniques is being developed for the analysis of turbulent and reacting flows. Quantitative image data, implying both a direct relation to flowfield variables as well as sufficient signal and spatial dynamic range, can be readily processed to yield two-dimensional distributions of flowfield scalars and in turn two-dimensional images of gradients and turbulence scales. Much of the development of imaging techniques to date has concentrated on understanding the requisite molecular spectroscopy and collision dynamics to be able to determine how flowfield variable information is encoded into the measured signal. From this standpoint the image is seen as a collection of single point measurements. The present effort aims at realizing necessary improvements in signal and spatial dynamic range, signal-to-noise ratio and spatial resolution in the imaging system as well as developing excitation/detection strategies which provide for a quantitative measure of particular flowfield scalars. The standard camera used for the study is an intensified CCD array operated in a conventional video format. The design of the system was based on detailed modeling of signal and image transfer properties of fast UV imaging lenses, image intensifiers and CCD detector arrays. While this system is suitable for direct scalar imaging, derived quantities (e.g. temperature or velocity images) require an exceptionally wide dynamic range imaging detector. To apply these diagnostics to reacting flows also requires a very fast shuttered camera. The authors have developed and successfully tested a new type of gated low-light level detector. This system relies on fast switching of proximity focused image-diode which is direct fiber-optic coupled to a cooled CCD array. Tests on this new detector show significant improvements in detection limit, dynamic range and spatial resolution as compared to microchannel plate intensified arrays.

  10. Supplementary Figure Captions Supplementary Figure 1 Caption: Map showing earthquake epicenters (black stars),

    E-Print Network [OSTI]

    Garnero, Ed

    ), and 12 lines along which cross-sections are made through the migration image volume in the lower mantle (green lines) in Supplementary Figures 2-4, and box indicating the area spanned by migration images at constant depth in Supplementary Figure 5. Profiles A-A' and B-B' in Figure 1 correspond to profiles D

  11. Image registration method for medical image sequences

    DOE Patents [OSTI]

    Gee, Timothy F.; Goddard, James S.

    2013-03-26

    Image registration of low contrast image sequences is provided. In one aspect, a desired region of an image is automatically segmented and only the desired region is registered. Active contours and adaptive thresholding of intensity or edge information may be used to segment the desired regions. A transform function is defined to register the segmented region, and sub-pixel information may be determined using one or more interpolation methods.

  12. Nonlinear Chemical Imaging Microscopy: Near-Field Third Harmonic Generation Imaging of

    E-Print Network [OSTI]

    Cohen, Ronald C.

    radiation in human red blood cells. We show that resonantly enhanced THG is a chemically specific bulk probeNonlinear Chemical Imaging Microscopy: Near-Field Third Harmonic Generation Imaging of Human Red experiments do not produce contrast that is truly surface specific. There is much current interest in the use

  13. Nonlinear digital imaging

    E-Print Network [OSTI]

    Lu, Jen-Tang; Fleischer, Jason W

    2015-01-01

    Nonlinear imaging systems can surpass the limits of linear optics, but to date they have all relied on physical media (e.g. crystals) to work. These materials are all constrained by their physical properties, such as frequency selectivity, environmental sensitivity, time behavior, and fixed nonlinear response. Here, we show that electro-optic spatial light modulators (SLMs) can take the place of traditional nonlinear media, provided that there is a feedback between the shape of the object and the pattern on the modulator. This feedback creates a designer illumination that generalizes the field of adaptive optics to include object-dependent patterns. Unlike physical media, the SLM response can provide arbitrary mathematical functions, operate over broad bandwidths at high speeds, and work equally well at high power and single-photon levels. We demonstrate the method experimentally for both coherent and incoherent light.

  14. INVESTIGATION OF THERAPY IMPROVEMENT USING REAL-TIME PHOTOACOUSTIC IMAGING GUIDED HIGH INTENSITY FOCUSED ULTRASOUND

    E-Print Network [OSTI]

    Cui, Huizhong

    2013-05-31

    . Although several groups showed that magnetic resonance imaging (MRI),[32, 91, 92] thermoacoustic tomography (TAT),[93] ultrasound imaging[25, 94] have the capabilities of monitoring the thermal lesion generated by HIFU in the targeted region, PAI has... modes (such as head and neck imaging), special RF coils are used to fit closely to the patient’s anatomy, and these coils will interfere with HIFU transducer placement. Photoacoustic imaging, also called optoacoustic imaging or thermoacoustic imaging...

  15. Modeling gated neutron images of THD capsules

    SciTech Connect (OSTI)

    Wilson, Douglas Carl; Grim, Gary P; Tregillis, Ian L; Wilke, Mark D; Morgan, George L; Loomis, Eric N; Wilde, Carl H; Oertel, John A; Fatherley, Valerie E; Clark, David D; Schmitt, Mark J; Merrill, Frank E; Wang, Tai - Sen F; Danly, Christopher R; Batha, Steven H; Patel, M; Sepke, S; Hatarik, R; Fittinghoff, D; Bower, D; Marinak, M; Munro, D; Moran, M; Hilko, R; Frank, M; Buckles, R

    2010-01-01

    Time gating a neutron detector 28m from a NIF implosion can produce images at different energies. The brighter image near 14 MeV reflects the size and symmetry of the capsule 'hot spot'. Scattered neutrons, {approx}9.5-13 MeV, reflect the size and symmetry of colder, denser fuel, but with only {approx}1-7% of the neutrons. The gated detector records both the scattered neutron image, and, to a good approximation, an attenuated copy of the primary image left by scintillator decay. By modeling the imaging system the energy band for the scattered neutron image (10-12 MeV) can be chosen, trading off the decayed primary image and the decrease of scattered image brightness with energy. Modeling light decay from EJ399, BC422, BCF99-55, Xylene, DPAC-30, and Liquid A leads to a preference from BCF99-55 for the first NIF detector, but DPAC 30 and Liquid A would be preferred if incorporated into a system. Measurement of the delayed light from the NIF scintillator using implosions at the Omega laser shows BCF99-55 to be a good choice for down-scattered imaging at 28m.

  16. Microscopic feather fractures in the faulting process 

    E-Print Network [OSTI]

    Conrad, Robert Eugene

    1974-01-01

    to a similar siesmic study, stopped triaxial compression tests at 10 various stages prior to failure and analyzed the microfractures in thin section. They found the early microfractures to be oriented within 30' of the load axis, and that they tend... similar, but their percentages of microfractures of a given orientation agree with those for Mff determined here. The question remains does the local maximum compression axis parallel the observed orientation of Mff, Given an end-loaded cylinder...

  17. Eagle Feather Tutoring Native American Cultural Center

    E-Print Network [OSTI]

    117 College Algebra in Context I MATH 118 College Algebra in Context II MATH 125 Numerical Differential Equations MATH 366 Introduction to Abstract Algebra MATH 369 Linear Algebra I MATH 450 Introduction to Numerical Analysis I MATH 469 Linear Algebra II STAT 315 Statistics for Engineers

  18. Practical image based lighting 

    E-Print Network [OSTI]

    Lee, Jaemin

    2003-01-01

    information is lighting. Image based lighting that is developed to recover illumination information of the real world from photographs has recently been popular in computer graphics. In this thesis we present a practical image based lighting method. Our...

  19. Computational ghost imaging

    E-Print Network [OSTI]

    Shapiro, Jeffrey H.

    A computational ghost-imaging arrangement that uses only a single-pixel detector is described. It affords a new 3D sectioning capability and matches the resolution of pseudothermal ghost imaging.

  20. User Science Images

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

    Research | URL: https:www.fin.ucar.edunetpubserver.np?find&siteimagelibrary&catalogcatalog&templatedetail.np&fielditemid&opmatches&value3438 Download Image:...

  1. Analyzing and improving image quality in reflective ghost imaging

    E-Print Network [OSTI]

    Hardy, Nicholas D. (Nicholas David)

    2011-01-01

    Ghost imaging is a transverse imaging technique that relies on the correlation between a pair of light fields, one that has interacted with the object to be imaged and one that has not. Most ghost imaging experiments have ...

  2. Human Functional Brain Imaging

    E-Print Network [OSTI]

    Rambaut, Andrew

    Human Functional Brain Imaging 1990­2009 September 2011 Portfolio Review #12;2 | Portfolio Review: Human Functional Brain ImagingThe Wellcome Trust is a charity registered in England and Wales, no's role in supporting human functional brain imaging and have informed `our' speculations for the future

  3. Human Functional Brain Imaging

    E-Print Network [OSTI]

    Rambaut, Andrew

    Human Functional Brain Imaging 1990­2009 September 2011 Portfolio Review Summary Brain Imaging #12 Dale ­ one of our first Trustees. Understanding the brain remains one of our key strategic aims today three-fold: · to identify the key landmarks and influences on the human functional brain imaging

  4. Image Sensor Application

    E-Print Network [OSTI]

    Stanford University

    ; #12; #12; Image Sensor Lens Metadata Actions Flash ... Application Processor Con gure 1 and Statistics #12; Image Sensor Lens Metadata Actions Flash ... Application Processor Con gure 1 Expose 2 and Statistics #12; Image Sensor Lens Metadata Actions Flash ... Application Processor Con gure 1 Expose 2

  5. Medical imaging systems

    DOE Patents [OSTI]

    Frangioni, John V

    2013-06-25

    A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

  6. Near-electrode imager

    DOE Patents [OSTI]

    Rathke, Jerome W. (Lockport, IL); Klingler, Robert J. (Westmont, IL); Woelk, Klaus (Wachtberg, DE); Gerald, II, Rex E. (Brookfield, IL)

    2000-01-01

    An apparatus, near-electrode imager, for employing nuclear magnetic resonance imaging to provide in situ measurements of electrochemical properties of a sample as a function of distance from a working electrode. The near-electrode imager uses the radio frequency field gradient within a cylindrical toroid cavity resonator to provide high-resolution nuclear magnetic resonance spectral information on electrolyte materials.

  7. Automation in image cytometry : continuous HCS and kinetic image cytometry

    E-Print Network [OSTI]

    Charlot, David J.

    2012-01-01

    OF CALIFORNIA, SAN DIEGO Automation in Image Cytometry:xiv Abstract of Dissertation Automation in Image Cytometry:

  8. Noise Estimation from a Single Image Ce Liu William T. Freeman

    E-Print Network [OSTI]

    Freeman, William T.

    Noise Estimation from a Single Image Ce Liu William T. Freeman CS and AI Lab, MIT {celiu to the image noise level, making it an important quantity to es- timate. We show how to estimate an upper bound on the noise level from a single image based on a piecewise smooth image prior model and measured CCD camera

  9. The momentum map representation of images

    E-Print Network [OSTI]

    M. Bruveris; F. Gay-Balmaz; D. D. Holm; T. S. Ratiu

    2015-04-08

    This paper discusses the mathematical framework for designing methods of large deformation matching (LDM) for image registration in computational anatomy. After reviewing the geometrical framework of LDM image registration methods, a theorem is proved showing that these methods may be designed by using the actions of diffeomorphisms on the image data structure to define their associated momentum representations as (cotangent lift) momentum maps. To illustrate its use, the momentum map theorem is shown to recover the known algorithms for matching landmarks, scalar images and vector fields. After briefly discussing the use of this approach for Diffusion Tensor (DT) images, we explain how to use momentum maps in the design of registration algorithms for more general data structures. For example, we extend our methods to determine the corresponding momentum map for registration using semidirect product groups, for the purpose of matching images at two different length scales. Finally, we discuss the use of momentum maps in the design of image registration algorithms when the image data is defined on manifolds instead of vector spaces.

  10. Figure 11 shows the reference irradiance spectrum proposed by Thuillier et al Figure 12 shows the Kitt Peak absolute irradiance spectrum smoothed using a 0.5

    E-Print Network [OSTI]

    Kurucz, Robert L.

    Figure 11 shows the reference irradiance spectrum proposed by Thuillier et al (2004). Figure 12 shows the Kitt Peak absolute irradiance spectrum smoothed using a 0.5 nm triangular bandpass irradiance spectrum subjectively normalized to the Thuillier et al irradiance spectrum. I recommend

  11. SU-E-T-255: Optimized Supine Craniospinal Irradiation with Image-Guided and Field Matched Beams

    SciTech Connect (OSTI)

    Jiang, Z; Holupka, E; Naughton, J; Williams, H; Galper, S; Huang, K

    2014-06-01

    Purpose: Conventional craniospinal irradiation (CSI) challenges include dose inhomogeneity at field junctions and position uncertainty due to the field divergence, particular for the two spinal fields. Here we outline a new supine CSI technique to address these difficulties. Methods: Patient was simulated in supine position. The cranial fields had isocenter at C2/C3 vertebral and were matched with 1st spinal field. Their inferior border was chosen to avoid the shoulder, as well as chin from the 1st spine field. Their collimator angles were dependent on asymmetry jaw setting of the 1st spinal field. With couch rotation, the spinal field gantry angles were adjusted to ensure, the inferior border of 1st and superior border of 2nd spinal fields were perpendicular to the table top. The radio-opaque wire position for the spinal junction was located initially by the light field from an anterior setup beam, and was finalized by the portal imaging of the 1st spinal field. With reference to the spinal junction wire, the fields were matched by positioning the isocenter of the 2nd spinal field. A formula was derived to optimize supine CSI treatment planning, by utilizing the relationship among the Yjaw setting, the spinal field gantry angles, cranial field collimator angles, and the spinal field isocenters location. The plan was delivered with portal imaging alignment for the both cranial and spinal junctions. Results: Utilizing this technique with matching beams, and conventional technique such as feathering and forwarding planning, a homogenous dose distribution was achieved throughout the entire CSI treatment volume including the spinal junction. Placing the spinal junction wire visualized in both spinal portals, allows for precise determination and verification of the appropriate match line of the spine fields. Conclusion: This technique of optimization supine CSI achieved a homogenous dose distributions and patient localization accuracy with image-guided and matched beams.

  12. Forming images using conditioned partial measurements from reference arm in ghost imaging

    E-Print Network [OSTI]

    Jianming Wen

    2012-08-29

    A recent thermal ghost imaging experiment by Wu's group constructed positive and negative images using a novel algorithm. This algorithm allows to form the images with use of partial measurements from the reference arm, even which never passes through the object, conditioned on the object arm. In this paper, we present a simple theory which explains the experimental observation, and provides an in-depth understanding of conventional ghost imaging. In particular, we theoretically show that the visibility of formed images through such an algorithm is not bounded by the standard value 1/3. In fact, it can ideally grow up to unity (with reduced imaging quality). Thus, the algorithm described here not only offers an alternative way to decode spatial correlation of thermal light, but also mimics a "bandpass filter" to remove the constant background such that the visibility or imaging contrast is improved. We further show that conditioned on one still object present in the test arm, it is possible to construct its image by sampling the available reference data.

  13. Image compression technique

    DOE Patents [OSTI]

    Fu, C.Y.; Petrich, L.I.

    1997-03-25

    An image is compressed by identifying edge pixels of the image; creating a filled edge array of pixels each of the pixels in the filled edge array which corresponds to an edge pixel having a value equal to the value of a pixel of the image array selected in response to the edge pixel, and each of the pixels in the filled edge array which does not correspond to an edge pixel having a value which is a weighted average of the values of surrounding pixels in the filled edge array which do correspond to edge pixels; and subtracting the filled edge array from the image array to create a difference array. The edge file and the difference array are then separately compressed and transmitted or stored. The original image is later reconstructed by creating a preliminary array in response to the received edge file, and adding the preliminary array to the received difference array. Filling is accomplished by solving Laplace`s equation using a multi-grid technique. Contour and difference file coding techniques also are described. The techniques can be used in a method for processing a plurality of images by selecting a respective compression approach for each image, compressing each of the images according to the compression approach selected, and transmitting each of the images as compressed, in correspondence with an indication of the approach selected for the image. 16 figs.

  14. Image compression technique

    DOE Patents [OSTI]

    Fu, Chi-Yung (San Francisco, CA); Petrich, Loren I. (Livermore, CA)

    1997-01-01

    An image is compressed by identifying edge pixels of the image; creating a filled edge array of pixels each of the pixels in the filled edge array which corresponds to an edge pixel having a value equal to the value of a pixel of the image array selected in response to the edge pixel, and each of the pixels in the filled edge array which does not correspond to an edge pixel having a value which is a weighted average of the values of surrounding pixels in the filled edge array which do correspond to edge pixels; and subtracting the filled edge array from the image array to create a difference array. The edge file and the difference array are then separately compressed and transmitted or stored. The original image is later reconstructed by creating a preliminary array in response to the received edge file, and adding the preliminary array to the received difference array. Filling is accomplished by solving Laplace's equation using a multi-grid technique. Contour and difference file coding techniques also are described. The techniques can be used in a method for processing a plurality of images by selecting a respective compression approach for each image, compressing each of the images according to the compression approach selected, and transmitting each of the images as compressed, in correspondence with an indication of the approach selected for the image.

  15. REVIEW OF PROGRESS Advice Sheet for Students asked to `Show Cause'

    E-Print Network [OSTI]

    Fleming, Andrew J.

    REVIEW OF PROGRESS Advice Sheet for Students asked to `Show Cause' December 2013 Page 1 of 2 CRICOS process is called `Show Cause'. Please note, if a fail grade changes and you are no longer `Show Cause' you will revert back to an `At Risk' status What does `Show Cause' mean for you? You are required

  16. Imaging arrangement and microscope

    DOE Patents [OSTI]

    Pertsinidis, Alexandros; Chu, Steven

    2015-12-15

    An embodiment of the present invention is an imaging arrangement that includes imaging optics, a fiducial light source, and a control system. In operation, the imaging optics separate light into first and second tight by wavelength and project the first and second light onto first and second areas within first and second detector regions, respectively. The imaging optics separate fiducial light from the fiducial light source into first and second fiducial light and project the first and second fiducial light onto third and fourth areas within the first and second detector regions, respectively. The control system adjusts alignment of the imaging optics so that the first and second fiducial light projected onto the first and second detector regions maintain relatively constant positions within the first and second detector regions, respectively. Another embodiment of the present invention is a microscope that includes the imaging arrangement.

  17. Video Toroid Cavity Imager

    DOE Patents [OSTI]

    Gerald, Rex E. II; Sanchez, Jairo; Rathke, Jerome W.

    2004-08-10

    A video toroid cavity imager for in situ measurement of electrochemical properties of an electrolytic material sample includes a cylindrical toroid cavity resonator containing the sample and employs NMR and video imaging for providing high-resolution spectral and visual information of molecular characteristics of the sample on a real-time basis. A large magnetic field is applied to the sample under controlled temperature and pressure conditions to simultaneously provide NMR spectroscopy and video imaging capabilities for investigating electrochemical transformations of materials or the evolution of long-range molecular aggregation during cooling of hydrocarbon melts. The video toroid cavity imager includes a miniature commercial video camera with an adjustable lens, a modified compression coin cell imager with a fiat circular principal detector element, and a sample mounted on a transparent circular glass disk, and provides NMR information as well as a video image of a sample, such as a polymer film, with micrometer resolution.

  18. Ferroelectric optical image comparator

    DOE Patents [OSTI]

    Butler, M.A.; Land, C.E.; Martin, S.J.; Pfeifer, K.B.

    1993-11-30

    A ferroelectric optical image comparator has a lead lanthanum zirconate titanate thin-film device which is constructed with a semi-transparent or transparent conductive first electrode on one side of the thin film, a conductive metal second electrode on the other side of the thin film, and the second electrode is in contact with a nonconducting substrate. A photoinduced current in the device represents the dot product between a stored image and an image projected onto the first electrode. One-dimensional autocorrelations are performed by measuring this current while displacing the projected image. 7 figures.

  19. Graphics and Image Standards

    Broader source: Energy.gov [DOE]

    For EERE websites and applications, follow these requirements and best practices for designing graphics and developing images. This includes making them Section 508-compliant.

  20. Quantitative luminescence imaging system

    DOE Patents [OSTI]

    Erwin, David N. (San Antonio, TX); Kiel, Johnathan L. (San Antonio, TX); Batishko, Charles R. (West Richland, WA); Stahl, Kurt A. (Richland, WA)

    1990-01-01

    The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer optics, a low-light level digitizing camera with image intensifying microchannel plates, an image process or, and a control computer. The image transfer optics may be a fiber image guide with a bend, or a microscope, to take the light outside of the RF field. Output of the camera is transformed into a localized rate of cumulative digitalized data or enhanced video display or hard-copy images. The system may be used as a luminescent microdosimetry device for radiofrequency or microwave radiation, as a thermal dosimeter, or in the dosimetry of ultra-sound (sonoluminescence) or ionizing radiation. It provides a near-real-time system capable of measuring the extremely low light levels from luminescent reactions in electromagnetic fields in the areas of chemiluminescence assays and thermal microdosimetry, and is capable of near-real-time imaging of the sample to allow spatial distribution analysis of the reaction. It can be used to instrument three distinctly different irradiation configurations, comprising (1) RF waveguide irradiation of a small Petri-dish-shaped sample cell, (2) RF irradiation of samples in a microscope for the microscopie imaging and measurement, and (3) RF irradiation of small to human body-sized samples in an anechoic chamber.

  1. Quantitative luminescence imaging system

    DOE Patents [OSTI]

    Erwin, D.N.; Kiel, J.L.; Batishko, C.R.; Stahl, K.A.

    1990-08-14

    The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer optics, a low-light level digitizing camera with image intensifying microchannel plates, an image process or, and a control computer. The image transfer optics may be a fiber image guide with a bend, or a microscope, to take the light outside of the RF field. Output of the camera is transformed into a localized rate of cumulative digitalized data or enhanced video display or hard-copy images. The system may be used as a luminescent microdosimetry device for radiofrequency or microwave radiation, as a thermal dosimeter, or in the dosimetry of ultra-sound (sonoluminescence) or ionizing radiation. It provides a near-real-time system capable of measuring the extremely low light levels from luminescent reactions in electromagnetic fields in the areas of chemiluminescence assays and thermal microdosimetry, and is capable of near-real-time imaging of the sample to allow spatial distribution analysis of the reaction. It can be used to instrument three distinctly different irradiation configurations, comprising (1) RF waveguide irradiation of a small Petri-dish-shaped sample cell, (2) RF irradiation of samples in a microscope for the microscopic imaging and measurement, and (3) RF irradiation of small to human body-sized samples in an anechoic chamber. 22 figs.

  2. Fermilab | Press Room | Images

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

    When using these images, please credit Fermilab. Return to Press Release Med Res | Hi Res According to the Standard Model of particles and forces, the Higgs mechanism gives...

  3. Fermilab | Press Room | Images

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

    using these images, please credit them as specified. Return to Press Release Med Res | Hi Res The Standard Model describes the interactions of the fundamental particle of the...

  4. Imaging with power controlled source pairs

    E-Print Network [OSTI]

    Bardsley, Patrick

    2015-01-01

    Scatterers in a homogeneous medium are imaged by probing the medium with two point sources of waves modulated by correlated signals and by measuring only intensities at one single receiver. For appropriately chosen source pairs, we show that full waveform array measurements can be recovered from such intensity measurements by solving a linear least squares problem. The least squares solution can be used to image with Kirchhoff migration, even if the solution is determined only up to a known one-dimensional nullspace. The same imaging strategy can be used when the medium is probed with point sources driven by correlated Gaussian processes and autocorrelations are measured at a single location. Since autocorrelations are robust to noise, this can be used for imaging when the probing wave is drowned in background noise.

  5. Edge-based correlation image registration for multispectral imaging

    DOE Patents [OSTI]

    Nandy, Prabal (Albuquerque, NM)

    2009-11-17

    Registration information for images of a common target obtained from a plurality of different spectral bands can be obtained by combining edge detection and phase correlation. The images are edge-filtered, and pairs of the edge-filtered images are then phase correlated to produce phase correlation images. The registration information can be determined based on these phase correlation images.

  6. New York Event to Show Bi-Partisan, International Support for...

    Energy Savers [EERE]

    New York Event to Show Bi-Partisan, International Support for Geothermal Energy in America New York Event to Show Bi-Partisan, International Support for Geothermal Energy in...

  7. Show me the money! The geography of contributions to California's Proposition 8

    E-Print Network [OSTI]

    Shin, Michael

    2009-01-01

    Space/American Place: Geographies of the Contemporary UnitedShow me the money! The geography of contributions toSeries Show me the money! The geography of contributions to

  8. Scandinavian Workshop on Imaging

    E-Print Network [OSTI]

    Mosegaard, Klaus

    Barcode Imaging of Chocolate Milk Quan.fica.on of Microstructures in Freeze.on of Fat Content in Raw Beef Cut Meat Evalua.on by RGB-to-spectrum Imaging.on to Visualizing Meat Products Characteriza.on of Commercial Danish Apple Cul.var Using Novel

  9. Medical imaging systems

    DOE Patents [OSTI]

    Frangioni, John V. (Wayland, MA)

    2012-07-24

    A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remains in a subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may also employ dyes or other fluorescent substances associated with antibodies, antibody fragments, or ligands that accumulate within a region of diagnostic significance. In one embodiment, the system provides an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide that is used to capture images. In another embodiment, the system is configured for use in open surgical procedures by providing an operating area that is closed to ambient light. More broadly, the systems described herein may be used in imaging applications where a visible light image may be usefully supplemented by an image formed from fluorescent emissions from a fluorescent substance that marks areas of functional interest.

  10. COVER IMAGE Mechanical metamaterials

    E-Print Network [OSTI]

    Loss, Daniel

    COVER IMAGE Mechanical metamaterials are artificial structures whose properties originate from a range of structural deformations. Letter p153; News & Views p95 IMAGE: JAYSON PAULOSE COVER DESIGN in elementary optical excitations of monolayer WSe2 Ajit Srivastava, Meinrad Sidler, Adrien V. Allain, Dominik S

  11. Heart imaging method

    DOE Patents [OSTI]

    Collins, H. Dale (Richland, WA); Gribble, R. Parks (Richland, WA); Busse, Lawrence J. (Littleton, CO)

    1991-01-01

    A method for providing an image of the human heart's electrical system derives time-of-flight data from an array of EKG electrodes and this data is transformed into phase information. The phase information, treated as a hologram, is reconstructed to provide an image in one or two dimensions of the electrical system of the functioning heart.

  12. Fluorescent image tracking velocimeter

    DOE Patents [OSTI]

    Shaffer, Franklin D. (Library, PA)

    1994-01-01

    A multiple-exposure fluorescent image tracking velocimeter (FITV) detects and measures the motion (trajectory, direction and velocity) of small particles close to light scattering surfaces. The small particles may follow the motion of a carrier medium such as a liquid, gas or multi-phase mixture, allowing the motion of the carrier medium to be observed, measured and recorded. The main components of the FITV include: (1) fluorescent particles; (2) a pulsed fluorescent excitation laser source; (3) an imaging camera; and (4) an image analyzer. FITV uses fluorescing particles excited by visible laser light to enhance particle image detectability near light scattering surfaces. The excitation laser light is filtered out before reaching the imaging camera allowing the fluoresced wavelengths emitted by the particles to be detected and recorded by the camera. FITV employs multiple exposures of a single camera image by pulsing the excitation laser light for producing a series of images of each particle along its trajectory. The time-lapsed image may be used to determine trajectory and velocity and the exposures may be coded to derive directional information.

  13. Adaptive wiener image restoration kernel

    DOE Patents [OSTI]

    Yuan, Ding (Henderson, NV)

    2007-06-05

    A method and device for restoration of electro-optical image data using an adaptive Wiener filter begins with constructing imaging system Optical Transfer Function, and the Fourier Transformations of the noise and the image. A spatial representation of the imaged object is restored by spatial convolution of the image using a Wiener restoration kernel.

  14. Image forming apparatus

    DOE Patents [OSTI]

    Satoh, Hisao (Hachioji, JP); Haneda, Satoshi (Hachioji, JP); Ikeda, Tadayoshi (Hachioji, JP); Morita, Shizuo (Hachioji, JP); Fukuchi, Masakazu (Hachioji, JP)

    1996-01-01

    In an image forming apparatus having a detachable process cartridge in which an image carrier on which an electrostatic latent image is formed, and a developing unit which develops the electrostatic latent image so that a toner image can be formed, both integrally formed into one unit. There is provided a developer container including a discharge section which can be inserted into a supply opening of the developing unit, and a container in which a predetermined amount of developer is contained, wherein the developer container is provided to the toner supply opening of the developing unit and the developer is supplied into the developing unit housing when a toner stirring screw of the developing unit is rotated.

  15. Time encoded radiation imaging

    DOE Patents [OSTI]

    Marleau, Peter; Brubaker, Erik; Kiff, Scott

    2014-10-21

    The various technologies presented herein relate to detecting nuclear material at a large stand-off distance. An imaging system is presented which can detect nuclear material by utilizing time encoded imaging relating to maximum and minimum radiation particle counts rates. The imaging system is integrated with a data acquisition system that can utilize variations in photon pulse shape to discriminate between neutron and gamma-ray interactions. Modulation in the detected neutron count rates as a function of the angular orientation of the detector due to attenuation of neighboring detectors is utilized to reconstruct the neutron source distribution over 360 degrees around the imaging system. Neutrons (e.g., fast neutrons) and/or gamma-rays are incident upon scintillation material in the imager, the photons generated by the scintillation material are converted to electrical energy from which the respective neutrons/gamma rays can be determined and, accordingly, a direction to, and the location of, a radiation source identified.

  16. Confocal coded aperture imaging

    DOE Patents [OSTI]

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

    2001-01-01

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

  17. Edit: Study -APP Save | Exit | Hide/Show Errors | Print... | Jump To

    E-Print Network [OSTI]

    Biederman, Irving

    Edit: Study - APP Save | Exit | Hide/Show Errors | Print... | Jump To: 01. Project Guidance Save | Exit | Hide/Show Errors | Print... | Jump To: 01. Project IdentificationStarDev/ResourceAdministration/Project/ProjectEditor?Project=com... 1 #12;Edit: Study - APP- Save | Exit | Hide/Show Errors | Print... | Jump To: 02. Study

  18. d Original Contribution ELECTROMECHANICAL WAVE IMAGING OF BIOLOGICALLY AND

    E-Print Network [OSTI]

    Konofagou, Elisa E.

    d Original Contribution ELECTROMECHANICAL WAVE IMAGING OF BIOLOGICALLY AND ELECTRICALLY PACED; in final form 26 August 2013) Abstract--Electromechanical Wave Imaging (EWI) has been show capable of directly and entirely non-invasively mapping the trans mural electromechanical activation in all four

  19. Carbon nanotubes as photoacoustic molecular imaging agents in living mice

    E-Print Network [OSTI]

    Khuri-Yakub, Butrus T. "Pierre"

    Carbon nanotubes as photoacoustic molecular imaging agents in living mice ADAM DE LA ZERDA1 not shown to target a diseased site in living subjects. Here we show that single-walled carbon nanotubes were verified ex vivo using Raman microscopy. Photoacoustic imaging of targeted single-walled carbon

  20. A Stochastic Approach to Content Adaptive Digital Image Watermarking

    E-Print Network [OSTI]

    Genève, Université de

    A Stochastic Approach to Content Adaptive Digital Image Watermarking Sviatoslav Voloshynovskiy y z and strength for the water­ mark embedding stage. We examine two such NVFs, based on either a non of the watermark estimation is equivalent to image denoising and derive content adaptive criteria. Re­ sults show

  1. A Stochastic Approach to Content Adaptive Digital Image Watermarking

    E-Print Network [OSTI]

    Genève, Université de

    A Stochastic Approach to Content Adaptive Digital Image Watermarking Sviatoslav Voloshynovskiyyz function, that allows us to determine the optimal watermark locations and strength for the water- mark to image denoising and derive content adaptive criteria. Re- sults show that watermark visibility

  2. SU-E-J-237: Image Feature Based DRR and Portal Image Registration

    SciTech Connect (OSTI)

    Wang, X; Chang, J [NY Weill Cornell Medical Ctr, NY (United States)

    2014-06-01

    Purpose: Two-dimensional (2D) matching of the kV X-ray and digitally reconstructed radiography (DRR) images is an important setup technique for image-guided radiotherapy (IGRT). In our clinics, mutual information based methods are used for this purpose on commercial linear accelerators, but with often needs for manual corrections. This work proved the feasibility that feature based image transform can be used to register kV and DRR images. Methods: The scale invariant feature transform (SIFT) method was implemented to detect the matching image details (or key points) between the kV and DRR images. These key points represent high image intensity gradients, and thus the scale invariant features. Due to the poor image contrast from our kV image, direct application of the SIFT method yielded many detection errors. To assist the finding of key points, the center coordinates of the kV and DRR images were read from the DICOM header, and the two groups of key points with similar relative positions to their corresponding centers were paired up. Using these points, a rigid transform (with scaling, horizontal and vertical shifts) was estimated. We also artificially introduced vertical and horizontal shifts to test the accuracy of our registration method on anterior-posterior (AP) and lateral pelvic images. Results: The results provided a satisfactory overlay of the transformed kV onto the DRR image. The introduced vs. detected shifts were fit into a linear regression. In the AP image experiments, linear regression analysis showed a slope of 1.15 and 0.98 with an R2 of 0.89 and 0.99 for the horizontal and vertical shifts, respectively. The results are 1.2 and 1.3 with R2 of 0.72 and 0.82 for the lateral image shifts. Conclusion: This work provided an alternative technique for kV to DRR alignment. Further improvements in the estimation accuracy and image contrast tolerance are underway.

  3. “Falling into Feathers”: Jews and the Trans?Atlantic Ostrich Feather Trade*

    E-Print Network [OSTI]

    Abrevaya Stein, S

    2007-01-01

    The papers of this company and its family members, held bybased office of the family company. Two other brothers,

  4. MO-PIS-Exhibit Hall-01: Imaging: CT Dose Optimization Technologies I

    SciTech Connect (OSTI)

    Denison, K; Smith, S

    2014-06-15

    Partners in Solutions is an exciting new program in which AAPM partners with our vendors to present practical “hands-on” information about the equipment and software systems that we use in our clinics. The imaging topic this year is CT scanner dose optimization capabilities. Note that the sessions are being held in a special purpose room built on the Exhibit Hall Floor, to encourage further interaction with the vendors. Dose Optimization Capabilities of GE Computed Tomography Scanners Presentation Time: 11:15 – 11:45 AM GE Healthcare is dedicated to the delivery of high quality clinical images through the development of technologies, which optimize the application of ionizing radiation. In computed tomography, dose management solutions fall into four categories: employs projection data and statistical modeling to decrease noise in the reconstructed image - creating an opportunity for mA reduction in the acquisition of diagnostic images. Veo represents true Model Based Iterative Reconstruction (MBiR). Using high-level algorithms in tandem with advanced computing power, Veo enables lower pixel noise standard deviation and improved spatial resolution within a single image. Advanced Adaptive Image Filters allow for maintenance of spatial resolution while reducing image noise. Examples of adaptive image space filters include Neuro 3-D filters and Cardiac Noise Reduction Filters. AutomA adjusts mA along the z-axis and is the CT equivalent of auto exposure control in conventional x-ray systems. Dynamic Z-axis Tracking offers an additional opportunity for dose reduction in helical acquisitions while SmartTrack Z-axis Tracking serves to ensure beam, collimator and detector alignment during tube rotation. SmartmA provides angular mA modulation. ECG Helical Modulation reduces mA during the systolic phase of the heart cycle. SmartBeam optimization uses bowtie beam-shaping hardware and software to filter off-axis x-rays - minimizing dose and reducing x-ray scatter. The DICOM Radiation Dose Structured Report (RDSR) generates a dose report at the conclusion of every examination. Dose Check preemptively notifies CT operators when scan parameters exceed user-defined dose thresholds. DoseWatch is an information technology application providing vendor-agnostic dose tracking and analysis for CT (and all other diagnostic x-ray modalities) SnapShot Pulse improves coronary CTA dose management. VolumeShuttle uses two acquisitions to increase coverage, decrease dose, and conserve on contrast administration. Color-Coding for Kids applies the Broselow-Luten Pediatric System to facilitate pediatric emergency care and reduce medical errors. FeatherLight achieves dose optimization through pediatric procedure-based protocols. Adventure Series scanners provide a child-friendly imaging environment promoting patient cooperation with resultant reduction in retakes and patient motion. Philips CT Dose Optimization Tools and Advanced Reconstruction Presentation Time: 11:45 ‘ 12:15 PM The first part of the talk will cover “Dose Reduction and Dose Optimization Technologies” present in Philips CT Scanners. The main Technologies to be presented include: DoseRight and tube current modulation (DoseRight, Z-DOM, 3D-DOM, DoseRight Cardiac) Special acquisition modes Beam filtration and beam shapers Eclipse collimator and ClearRay collimator NanoPanel detector DoseRight will cover automatic tube current selection that automatically adjusts the dose for the individual patient. The presentation will explore the modulation techniques currently employed in Philips CT scanners and will include the algorithmic concepts as well as illustrative examples. Modulation and current selection technologies to be covered include the Automatic Current Selection component of DoseRight, ZDOM longitudinal dose modulation, 3D-DOM (combination of longitudinal and rotational dose modulation), Cardiac Dose right (an ECG based dose modulation scheme), and the DoseRight Index (DRI) IQ index. The special acquisition modes covers acquisition techniques such as prospective gating that

  5. Application of infrared imaging in ferrocyanide tanks

    SciTech Connect (OSTI)

    Morris, K.L.; Mailhot, R.B. Jr.; McLaren, J.M.; Morris, K.L.

    1994-09-28

    This report analyzes the feasibility of using infrared imaging techniques and scanning equipment to detect potential hot spots within ferrocyanide waste tanks at the Hanford Site. A hot spot is defined as a volumetric region within a waste tank with an excessively warm temperature that is generated by radioactive isotopes. The thermal image of a hot spot was modeled by computer. this model determined the image an IR system must detect. Laboratory and field tests of the imaging system are described, and conclusions based on laboratory and field data are presented. The report shows that infrared imaging is capable of detecting hot spots in ferrocyanide waste tanks with depths of up to 3.94 m (155 in.). The infrared imaging system is a useful technology for initial evaluation and assessment of hot spots in the majority of ferrocyanide waste tanks at the Hanford Site. The system will not allow an exact hot spot and temperature determination, but it will provide the necessary information to determine the worst-case hot spot detected in temperature patterns. Ferrocyanide tanks are one type of storage tank on the Watch List. These tanks are identified as priority 1 Hanford Site Tank farm Safety Issues.

  6. Nuclear medicine imaging system

    DOE Patents [OSTI]

    Bennett, G.W.; Brill, A.B.; Bizais, Y.J.C.; Rowe, R.W.; Zubal, I.G.

    1983-03-11

    It is an object of this invention to provide a nuclear imaging system having the versatility to do positron annihilation studies, rotating single or opposed camera gamma emission studies, and orthogonal gamma emission studies. It is a further object of this invention to provide an imaging system having the capability for orthogonal dual multipinhole tomography. It is another object of this invention to provide a nuclear imaging system in which all available energy data, as well as patient physiological data, are acquired simultaneously in list mode.

  7. Colour Image Segmentation Wladyslaw Skarbek

    E-Print Network [OSTI]

    Koschan, Andreas

    Colour Image Segmentation A Survey Wladyslaw Skarbek Institute of Computer Science Polish Academy . . . . . . . . . . . . . . . . . . . . . . . . 23 4.2.1 Colour image segmentation and labeling through multiediting and condensing

  8. Direct Exoplanet Detection with Binary Differential Imaging

    E-Print Network [OSTI]

    Rodigas, Timothy J; Mamajek, Eric E; Males, Jared R; Close, Laird M; Morzinski, Katie; Hinz, Philip M; Kaib, Nathan

    2015-01-01

    Binaries are typically excluded from direct imaging exoplanet surveys. However, the recent findings of Kepler and radial velocity programs show that planets can and do form in binary systems. Here, we suggest that visual binaries offer unique advantages for direct imaging. We show that Binary Differential Imaging (BDI), whereby two stars are imaged simultaneously at the same wavelength within the isoplanatic patch at high Strehl ratio, offers improved point spread function (PSF) subtraction that can result in increased sensitivity to planets close to each star. We demonstrate this by observing a young visual binary separated by 4\\asec ~with MagAO/Clio-2 at 3.9 \\microns, where the Strehl ratio is high, the isoplanatic patch is large, and giant planets are bright. Comparing BDI to angular differential imaging (ADI), we find that BDI's 5$\\sigma$ contrast is \\about 0.5 mags better than ADI's within \\about 1\\asec ~for the particular binary we observed. Because planets typically reside close to their host stars, BD...

  9. MA54200 HOMEWORK 1.3. Show that the principal value integral ...

    E-Print Network [OSTI]

    2008-09-15

    MA54200 HOMEWORK. ASSIGNMENT 1: SOLUTIONS. 1.3. Show that the principal value integral. p.v.. ? ?(x) x dx = lim. ??0+. (? ??. ?? ?(x) x dx +. ? ?. ?.

  10. Using Show Homes (and Sponsorships) to Persuade Commissioning Relevancy and Factory Crafted High Performance Modular Homes 

    E-Print Network [OSTI]

    Thomas-Rees, S.; Chasar, D.; Beal, D.; Chandra, S.

    2007-01-01

    manufacturing quality assurance. This paper aims to provide a case study of commissioned, performance measure that justify cost for these demonstration project and "live" show homes....

  11. Microwave imaging reflectometry for the visualization of turbulence in tokamaks

    E-Print Network [OSTI]

    Mazzucato, Ernesto

    Microwave imaging reflectometry for the visualization of turbulence in tokamaks E. Mazzucato describes the results of an extensive numerical study of microwave reflectometry in tokamaks showing scheme for the global visualization of turbulent fluctuations in tokamaks is described. 1. Introduction

  12. Parallel Lossless Image Compression Using Huffman and Arithmetic Coding

    E-Print Network [OSTI]

    Howard, Paul G.; Vitter, Jeffrey Scott

    1996-01-01

    We show that high-resolution images can be encoded and decoded e ciently in parallel. We present an algorithm based on the hierarchical MLP method, used either with Hu man coding or with a new variant of arithmetic coding ...

  13. Image portion identification methods, image parsing methods, image parsing systems, and articles of manufacture

    DOE Patents [OSTI]

    Lassahn, Gordon D.; Lancaster, Gregory D.; Apel, William A.; Thompson, Vicki S.

    2013-01-08

    Image portion identification methods, image parsing methods, image parsing systems, and articles of manufacture are described. According to one embodiment, an image portion identification method includes accessing data regarding an image depicting a plurality of biological substrates corresponding to at least one biological sample and indicating presence of at least one biological indicator within the biological sample and, using processing circuitry, automatically identifying a portion of the image depicting one of the biological substrates but not others of the biological substrates.

  14. Imaging through scattering

    E-Print Network [OSTI]

    Satat, Guy

    2015-01-01

    In this thesis we demonstrate novel methods to overcome optical scattering in order to resolve information about hidden scenes, in particular for biomedical applications. Imaging through scattering media has long been a ...

  15. Photothermal imaging scanning microscopy

    DOE Patents [OSTI]

    Chinn, Diane (Pleasanton, CA); Stolz, Christopher J. (Lathrop, CA); Wu, Zhouling (Pleasanton, CA); Huber, Robert (Discovery Bay, CA); Weinzapfel, Carolyn (Tracy, CA)

    2006-07-11

    Photothermal Imaging Scanning Microscopy produces a rapid, thermal-based, non-destructive characterization apparatus. Also, a photothermal characterization method of surface and subsurface features includes micron and nanoscale spatial resolution of meter-sized optical materials.

  16. Quantum-mimetic imaging

    E-Print Network [OSTI]

    Venkatraman, Dheera

    2015-01-01

    Many recent experiments have explored the use of nonclassical states of light to perform imaging or sensing. Although these experiments require quantum descriptions of light to explain their behavior, the advantages they ...

  17. Building an urban image

    E-Print Network [OSTI]

    Russin, Andrew J

    1992-01-01

    This design project explores the principles of "urban legibility" and "shared space". The readability, or imageability (in Kevin Lynch's term) of a city results from the recognition of larger urban patterns, organizations, ...

  18. Reflective optical imaging system

    DOE Patents [OSTI]

    Shafer, David R. (Fairfield, CT)

    2000-01-01

    An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four reflective elements for projecting a mask image onto a substrate. The four optical elements are characterized in order from object to image as convex, concave, convex and concave mirrors. The optical system is particularly suited for step and scan lithography methods. The invention increases the slit dimensions associated with ringfield scanning optics, improves wafer throughput and allows higher semiconductor device density.

  19. The SDSS Imaging Pipelines

    E-Print Network [OSTI]

    Robert Lupton; James E. Gunn; Zeljko Ivezic; Gillian R. Knapp; Stephen Kent; Naoki Yasuda

    2001-05-24

    We summarise the properties of the Sloan Digital Sky Survey (SDSS) project, discuss our software infrastructure, and outline the architecture of the SDSS image processing pipelines. We then discuss two of the algorithms used in the SDSS image processing; the KL-transform based modelling of the spatial variation of the PSF, and the use of galaxy models in star/galaxy separation. We conclude with the first author's personal opinions on the challenges that the astronomical community faces with major software projects.

  20. Vision: Cloud-Powered Sight for All Showing the Cloud What You See

    E-Print Network [OSTI]

    Zhong, Lin

    General Terms Algorithms, Design, Human Factors, Languages, Performance, Security Keywords Camera, cloudVision: Cloud-Powered Sight for All Showing the Cloud What You See Paramvir Bahl Matthai Philipose argue that for computers to do more for us, we need to show the cloud what we see and embrace cloud

  1. Listen-Communicate-Show (LCS): Spoken Language Command of Agent-based Remote Information Access

    E-Print Network [OSTI]

    and networked information resources, and shows a tailored visualization to the individual user. The LCS n recognitions are then parsed, prior context added, and processed using the Natural Language (NL issues and application-specific information and training. Figure 1 shows our LCS architecture. TINA Info

  2. STM images showing the morphology of BaO film (7 MLleft and 80 MLright) formed by the direct evaporation of the BaO.

    E-Print Network [OSTI]

    2008 EMSL Lead Investigator: Igor Lyubinetsky Microscopy Group, EMSL, PNNL Co-investigators: Yingge Du important in heterogeneous catalysis, metal oxides are widely used as both a support and an active catalyst oxide material. #12;It is essential to evaluate the fundamental structural issues of the growth mode

  3. STM images showing the morphology of BaO film (7 MLleft and 80 MLright) formed by the direct evaporation of the BaO.

    E-Print Network [OSTI]

    -layer-assisted growth (BLAG) technique by combining EMSL's ultra-high vacuum scanning probe microscopy (UHV SPM on the base of the UHV SPM system. The concept of this work involves examining--in a model system approach-by-particle basis using in situ SPM to provide the critical structural information necessary for a better molecular

  4. Imaging systems and methods for obtaining and using biometric information

    DOE Patents [OSTI]

    McMakin, Douglas L [Richland, WA; Kennedy, Mike O [Richland, WA

    2010-11-30

    Disclosed herein are exemplary embodiments of imaging systems and methods of using such systems. In one exemplary embodiment, one or more direct images of the body of a clothed subject are received, and a motion signature is determined from the one or more images. In this embodiment, the one or more images show movement of the body of the subject over time, and the motion signature is associated with the movement of the subject's body. In certain implementations, the subject can be identified based at least in part on the motion signature. Imaging systems for performing any of the disclosed methods are also disclosed herein. Furthermore, the disclosed imaging, rendering, and analysis methods can be implemented, at least in part, as one or more computer-readable media comprising computer-executable instructions for causing a computer to perform the respective methods.

  5. Imaging of Diesel Particulate Filters using a High-Flux Neutron Source

    Broader source: Energy.gov [DOE]

    Detailed images of deposits identified inside automotive DPFs using neutrons show how the deposits of soot, ash, and washcoat occurs within the filter.

  6. Fluid Imaging of Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objectives: Attempting to Image EGS Fracture & Fluid Networks; Employing joint Geophysical Imaging Technologies.

  7. Recent developments in instrumentation and bioinformatics show that the technique of synchrotron radiation circular

    E-Print Network [OSTI]

    Janes, Bob

    567 Recent developments in instrumentation and bioinformatics show that the technique conventional lab-based circular dichroism instruments. Addresses *School of Crystallography, Birkbeck College for protein studies are available at the Synchrotron Radiation Source (SRS; UK) (http

  8. Page 1 Name: SI#: Midterm 2- Math 341 (11/1/05) SHOW ALL ...

    E-Print Network [OSTI]

    Nov 1, 2005 ... ein/ll Mm mem-j i ? ift@ => l??=4~l??hrtm4`?? @rfi f4. E. 6. (l5pts) Show that Cauchy sequences converge. Path Mtn Mt o. @aV-:Am than.

  9. Nuclear and Chloroplast Microsatellites Show Multiple Introductions in the Worldwide Invasion History of

    E-Print Network [OSTI]

    Nuclear and Chloroplast Microsatellites Show Multiple Introductions in the Worldwide Invasion its worldwide population genetic structure, using both nuclear and chloroplast microsatellite markers. Our results indicate that the expansion in Europe mostly occurred through long-distance dispersal

  10. Fusion of engineering, art, and education through an interactive robotic puppet show

    E-Print Network [OSTI]

    Felix, Heather K

    2007-01-01

    In this current age of the Technological Revolution, technical proficiency is not enough for graduating engineers and scientists. Creativity and innovation need to be emphasized and pursued. The Robotic Puppet Show fuses ...

  11. igure 1. Map of N. Alaska and NW Canada Showing the Locations...

    Gasoline and Diesel Fuel Update (EIA)

    1. Map of Northern Alaska and Northwestern Canada Showing the Locations of the National Petroleum Reserve-Alaska (NPR-A), Arctic National Wildlife Refuge (ANWR), 1002 Area, Current...

  12. MA 30300 Test 2 Jul. 21, 2015 Your Name(Last, First) Show your ...

    E-Print Network [OSTI]

    2015-07-16

    MA 30300 Test 2. Jul. 21, 2015. Your Name(Last, First). Show your work, circle the answer! 1. Solve the initial value problem. y// + y = ?(t - 2?) cost, y(0) = 0, y/(0)

  13. Quiz 12 11/11/2015 You must show all work to receive full credit ...

    E-Print Network [OSTI]

    2015-11-08

    Nov 11, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished. 1.

  14. Quiz 3 9/9/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-09-08

    Sep 9, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished.

  15. Quiz 6 9/28/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-09-24

    Sep 28, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished.

  16. Quiz 11 11/6/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-11-08

    Nov 6, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished. 1.

  17. Quiz 5 9/18/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-09-15

    Sep 18, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished. 1.

  18. Quiz 8 10/9/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-10-08

    Oct 9, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished. 1.

  19. Quiz 4 9/14/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-09-14

    Sep 14, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished. 1.

  20. Quiz 10 10/30/2015 You must show all work to receive full credit ...

    E-Print Network [OSTI]

    2015-10-28

    Oct 30, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished. 1.

  1. Quiz 9 10/19/2015 You must show all work to receive full credit. You ...

    E-Print Network [OSTI]

    2015-10-20

    Oct 19, 2015 ... You must show all work to receive full credit. You may use a one-line calculator. You may turn in your quiz and leave when you are finished.

  2. Physics 314 (Survey of Astronomy) Exam 3 Please show all significant steps clearly in all problems.

    E-Print Network [OSTI]

    Allen, Roland E.

    Physics 314 (Survey of Astronomy) Exam 3 Please show all significant steps clearly in all problems ! v ! ! B (in SI units). You may just assume the general formula for the centripetal force

  3. Physics 314 (Survey of Astronomy) Exam 3 Please show all significant steps clearly in all problems.

    E-Print Network [OSTI]

    Allen, Roland E.

    Physics 314 (Survey of Astronomy) Exam 3 Please show all significant steps clearly in all problems to a uniform magnetic field ! B . Recall that the Lorentz force is given by ! F = e ! v ! ! B (in SI units

  4. Show Me the Money! The Geography of Contributions to California's Proposition 8

    E-Print Network [OSTI]

    Shin, Michael

    2009-01-01

    4370.1037 Shin: The Geography of Contributions to Prop 8Space/American Place: Geographies of the Contemporary UnitedIssue 1 Show Me the Money! The Geography of Contributions to

  5. ORISE report shows number of health physics Ph.D.s declined in...

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

    ORISE report shows number of health physics Ph.D.s declined in 2009 FOR IMMEDIATE RELEASE June 15, 2010 FY10-37 OAK RIDGE, Tenn.-Health physics undergraduate degrees increased...

  6. BAYESIAN ENSEMBLE LEARNING FOR MEDICAL IMAGE DENOISING

    E-Print Network [OSTI]

    Oh, Hyuntaek

    2012-08-31

    Medical images are often affected by random noise because of both image acquisition from the medical modalities and image transmission from modalities to workspace in the main computer. Medical image denoising removes noise from the CT or MR images...

  7. Spectroscopic imaging in electron microscopy

    SciTech Connect (OSTI)

    Pennycook, Stephen J [ORNL; Colliex, C. [Universite Paris Sud, Orsay, France

    2012-01-01

    In the scanning transmission electron microscope, multiple signals can be simultaneously collected, including the transmitted and scattered electron signals (bright field and annular dark field or Z-contrast images), along with spectroscopic signals such as inelastically scattered electrons and emitted photons. In the last few years, the successful development of aberration correctors for the electron microscope has transformed the field of electron microscopy, opening up new possibilities for correlating structure to functionality. Aberration correction not only allows for enhanced structural resolution with incident probes into the sub-angstrom range, but can also provide greater probe currents to facilitate mapping of intrinsically weak spectroscopic signals at the nanoscale or even the atomic level. In this issue of MRS Bulletin, we illustrate the power of the new generation of electron microscopes with a combination of imaging and spectroscopy. We show the mapping of elemental distributions at atomic resolution and also the mapping of electronic and optical properties at unprecedented spatial resolution, with applications ranging from graphene to plasmonic nanostructures, and oxide interfaces to biology.

  8. Microbial Cell Imaging

    SciTech Connect (OSTI)

    Doktycz, Mitchel John; Sullivan, Claretta; Mortensen, Ninell P; Allison, David P

    2011-01-01

    Atomic force microscopy (AFM) is finding increasing application in a variety of fields including microbiology. Until the emergence of AFM, techniques for ivnestigating processes in single microbes were limited. From a biologist's perspective, the fact that AFM can be used to generate high-resolution images in buffers or media is its most appealing feature as live-cell imaging can be pursued. Imaging living cells by AFM allows dynamic biological events to be studied, at the nanoscale, in real time. Few areas of biological research have as much to gain as microbiology from the application of AFM. Whereas the scale of microbes places them near the limit of resolution for light microscopy. AFM is well suited for the study of structures on the order of a micron or less. Although electron microscopy techniques have been the standard for high-resolution imaging of microbes, AFM is quickly gaining favor for several reasons. First, fixatives that impair biological activity are not required. Second, AFM is capable of detecting forces in the pN range, and precise control of the force applied to the cantilever can be maintained. This combination facilitates the evaluation of physical characteristics of microbes. Third, rather than yielding the composite, statistical average of cell populations, as is the case with many biochemical assays, the behavior of single cells can be monitored. Despite the potential of AFM in microbiology, there are several limitations that must be considered. For example, the time required to record an image allows for the study of gross events such as cell division or membrane degradation from an antibiotic but precludes the evaluation of biological reactions and events that happen in just fractions of a second. Additionally, the AFM is a topographical tool and is restricted to imaging surfaces. Therefore, it cannot be used to look inside cells as with opticla and transmission electron microscopes. other practical considerations are the limitation on the maximum scan size (roughly 100 x 100 {mu}m) and the restricted movement of the cantilever in the Z (or height) direction. In most commercial AFMs, the Z range is restricted to roughly 10 {mu}m such that the height of cells to be imaged must be seriously considered. Nevertheless, AFM can provide structural-functional information at nanometer resolution and do so in physiologically relevant environments. Further, instrumentation for scanning probe microscopy continues to advance. Systems for high-speed imaging are becoming available, and techniques for looking inside the cells are being demonstrated. The ability to combine AFM with other imaging modalities is likely to have an even greater impact on microbiological studies. AFM studies of intact microbial cells started to appear in the literature in the 1990s. For example, AFM studies of Saccharomyces cerevisiae examined buddings cars after cell division and detailed changes related to cell growth processes. Also, the first AFM studies of bacterial biofilms appeared. In the late 1990s, AFM studies of intact fungal spores described clear changes in spore surfaces upon germination, and studies of individual bacterial cells were also described. These early bacterial imaging studies examined changes in bacterial morphology due to antimicrobial peptides exposure and bacterial adhesion properties. The majority of these early studies were carried out on dried samples and took advantage of the resolving power of AFM. The lack of cell mounting procedures presented an impediment for cell imaging studies. Subsequently, several approaches to mounting microbial cells have been developed, and these techniques are described later. Also highlighted are general considerations for microbial imaging and a description of some of the various applications of AFM to microbiology.

  9. Multispectral imaging probe

    DOE Patents [OSTI]

    Sandison, D.R.; Platzbecker, M.R.; Descour, M.R.; Armour, D.L.; Craig, M.J.; Richards-Kortum, R.

    1999-07-27

    A multispectral imaging probe delivers a range of wavelengths of excitation light to a target and collects a range of expressed light wavelengths. The multispectral imaging probe is adapted for mobile use and use in confined spaces, and is sealed against the effects of hostile environments. The multispectral imaging probe comprises a housing that defines a sealed volume that is substantially sealed from the surrounding environment. A beam splitting device mounts within the sealed volume. Excitation light is directed to the beam splitting device, which directs the excitation light to a target. Expressed light from the target reaches the beam splitting device along a path coaxial with the path traveled by the excitation light from the beam splitting device to the target. The beam splitting device directs expressed light to a collection subsystem for delivery to a detector. 8 figs.

  10. SU-E-I-88: Mammography Imaging: Does Positioning Matter?

    SciTech Connect (OSTI)

    Zhang, J; Szabunio, M [University of Kentucky, Lexington, KY (United States)

    2014-06-01

    Purpose: In mammography, compression is imperative for quality images and glandular radiation exposure dose. The thickness of the compressed breast directly determines mammography acquisition parameters. The compressed thickness varies due to variation in technologist practice, even for the same patient imaged at different time. This study is to investigate potential effect of the variation in breast positioning on radiation dose and image quality. Methods: Radiation dose at different thicknesses was measured with a BR-12 breast phantom for both conventional craniocaudal view and tomosynthesis in a Hologic Tomosynthesis mammography system. The CIRS stereotactic needle biopsy training phantom embedded dense masses and microcalcification in various sizes were imaged for image quality evaluation. Radiologists evaluated images. Clinical mammograms from the same patient but acquired at different time were retrospectively retrieved to evaluate potential effects of variation in positioning. Results: Acquisition parameters (kVp and mAs) increase with the increased phantom thickness. Radiation exposure increases following an exponential trend. The stereotactic phantom images showed loss of spatial and contrast resolution with inappropriate positioning. The compressed pressure may not be a good indicator for appropriate positioning. The inclusion of different amount of pectoralis muscle may lead to the same compressed pressure but different compressed thickness. The initial retrospective study of 3 patients showed that there were potential large variations in positioning the same patient at different examination time, resulting in large variations in patient radiation dose and image quality. Conclusion: Variations in patient positioning potentially influence patient radiation dose and image quality. The technologist has the critical responsibility to position patient to provide quality images in spite of different breast and body types. To reduce intra and inter practice variations in positioning patient, a training program among each breast imaging center may be a need.

  11. Entropy Shows that Global Warming Should Cause Increased Variability in the Weather

    E-Print Network [OSTI]

    John Michael Williams

    2001-02-21

    Elementary physical reasoning seems to leave it inevitable that global warming would increase the variability of the weather. The first two terms in an approximation to the global entropy are used to show that global warming has increased the free energy available to drive the weather, and that the variance of the weather should increase correspondingly.

  12. ORNL Roof and Attic System Shows Efficient Retrofit By Zaher Karp Reuters, July 27, 2009

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL Roof and Attic System Shows Efficient Retrofit Option By Zaher Karp ­ Reuters, July 27, 2009 A new roof and attic system developed at the Oak Ridge National Laboratory Building Technology Center. Texas-based Billy Ellis Roofing funds the research through the Building Technology Center

  13. Fig. 1. Schematic of gating operation driven by centrifugal force. (a) shows top view of the

    E-Print Network [OSTI]

    Banerjee, Debjyoti

    R1 R2 (a) Pm (b) Fig. 1. Schematic of gating operation driven by centrifugal force. (a) shows top-expanding opening. Liquid pressure at the meniscus is Pm. DESIGN ANALYSES OF CAPILLARY BURST VALVES IN CENTRIFUGAL, Capillary Gating, Centrifugal force, FlumeCAD I. Introduction There is a wide interest in micron

  14. Regional analysis of the impacts of climate change on cheatgrass invasion shows potential risk and opportunity

    E-Print Network [OSTI]

    Bradley, Bethany

    Regional analysis of the impacts of climate change on cheatgrass invasion shows potential risk to increase invasion risk to native ecosystems. Changing climate creates risk as new terrain becomes, followed by winter temperature. I perform a sensitivity analysis on potential cheatgrass distributions

  15. Fig.1a. Schematic picture of ITER tokamak, showing the toroidal main chamber,

    E-Print Network [OSTI]

    Lin, Zhihong

    Fig.1a. Schematic picture of ITER tokamak, showing the toroidal main chamber, material wall, and the small divertor chamber at the bottom of the main chamber Gyrokinetic particle simulation of neoclassical and b). The wall plates in the divertor chamber are periodically replaced, giving the main wall a much

  16. The London Underground map The famous London Underground map shows the Thames

    E-Print Network [OSTI]

    Jenny, Bernhard

    of graphic information design. London Transport, of course, continues improving and extending the diagram mapThe London Underground map The famous London Underground map shows the Thames and named metro, was that it brought order into London's intricate geography. Garland 1998:7-8 writes: "Above any consideration

  17. Nanoparticle Silver Catalysts That Show Enhanced Activity for Carbon Dioxide Electrolysis

    E-Print Network [OSTI]

    Kenis, Paul J. A.

    Information ABSTRACT: Electrochemical conversion of CO2 has been proposed both as a way to reduce CO2 emissions and as a source of renewable fuels and chemicals, but conversion rates need improvement before the process will be practical. In this article, we show that the rate of CO2 conversion per unit surface area

  18. Oil drilling to use LSU process Show Caption BILL FEIG/THE ADVOCATE

    E-Print Network [OSTI]

    BUSINESS Oil drilling to use LSU process Show Caption BILL FEIG/THE ADVOCATE Advocate staff process to make wood-plastic composites has found a new application in the oil and gas business to turn used plastic motor oil containers and wood waste into a strong composite material that can be used

  19. Columns CHIMIA 2014, 68, Nr. 5 333 Can you show us your analytical highlight?

    E-Print Network [OSTI]

    Gilli, Adrian

    phosphorus loading on bottom-water O2 . Applying this method to cores from shallower water depths revealed-resolution manganese (Mn) and iron (Fe) element profiles. As the sediment core contains semi-annual laminations (i, but this has never before been validated with monitoring data. Using the Lake Zurich core, we could show

  20. neutron scattering shows magnetic excitation mechanism at work in new materials.

    E-Print Network [OSTI]

    neutron scattering shows magnetic excitation mechanism at work in new materials. In 2008 dai of orNl and the university of tennes- see led early neutron scattering studies of the pnictides. dai ticks off four main things neutron scattering has revealed about superconducting iron com- pounds

  1. THE SCHOOL OF JOURNALISM/MEDIA STUDIES INVITES YOU TO ATTEND SHORT FILM SHOWING

    E-Print Network [OSTI]

    Walker, Lawrence R.

    THE SCHOOL OF JOURNALISM/MEDIA STUDIES INVITES YOU TO ATTEND SHORT FILM SHOWING Fishing Without A fictional short film directed by Cutter Hodierne, that tells a story of pirates in Somalia, from Sundance Film Festival and had its European premier at the Dawn Breakers International Film Festival

  2. 061215-092 1 Abstract--A review of experimental evidence shows that the

    E-Print Network [OSTI]

    dependent attenuation proportional to f n , n =1.8. This observation is in general agreement with Biot 2005, Brest, FR. (2005)] shows that in this lower frequency range, a quadratic dependence (n=2 properties and depth-dependent characteristics of the sediment are used to explain the apparent n=1.8 power

  3. Fusion Scientists See Promise Where Obama Shows No By John Lippert -May 3, 2013

    E-Print Network [OSTI]

    turn green to show the laser is storing energy as it looms in the 10-story building above. In the blink,200 scientists and staff are on a quest to create fusion energy, Bloomberg Markets magazine will report in its National Laboratory, wielding a laser that delivers 1,000 times more energy than the U.S. electrical grid

  4. NEUTRON SCATTERING SHOWS THAT CYTOCHROME b5 PENETRATES DEEPLY INTO THE LIPID BILAYER

    E-Print Network [OSTI]

    NEUTRON SCATTERING SHOWS THAT CYTOCHROME b5 PENETRATES DEEPLY INTO THE LIPID BILAYER E. P. GOGOL of a highly deuterated phospholipid. Small-angle neutron diffraction patterns were collected in a series of H to lipid vesicles using neutron small-angle scattering methods. To increase scat- tering contrast between

  5. PATTERNS OF GREENHOUSE WARMING "Projected warming in the 21st century shows scenario-independent

    E-Print Network [OSTI]

    PATTERNS OF GREENHOUSE WARMING "Projected warming in the 21st century shows scenario in response to increasing greenhouse gas levels will not be geographically uniform. · Computer models indicate greenhouse gas (GHG) concentrations. However, the warming is not expected to be uniform over the globe, nor

  6. Seismic tomography shows that upwelling beneath Iceland is confined to the upper mantle

    E-Print Network [OSTI]

    Allen, Richard M.

    Seismic tomography shows that upwelling beneath Iceland is confined to the upper mantle G. R of Iceland, Bustadavegi 9, Reykjavik, Iceland 5 National Energy Authority, Grensasvegi 9, Reykjavik, Iceland of the highest-resolution teleseismic tomography study yet performed of the upper mantle beneath Iceland

  7. Output from microturbulence simulation of a fusion plasma showing 22 of the 400 million plasma

    E-Print Network [OSTI]

    Utah, University of

    instabilities is critical in the design of fusion reactors such as the International Thermonuclear ExperimentalOutput from microturbulence simulation of a fusion plasma showing 22 of the 400 million plasma particles simulated. Petascale-class machines help fusion scientists model their simulations with higher

  8. The figure shows the current energy pay back time for PV

    E-Print Network [OSTI]

    The figure shows the current energy pay back time for PV systems using different cell technologies and installed either in Central Europe or Southern Europe. Argument B1 PV Fact Sheets Technology improvements: Manufacturing a PV system consumes more energy than it ever produces in its life time." The fact is

  9. HTML Web Page That Shows Its Own Source Code Tom Verhoeff

    E-Print Network [OSTI]

    Verhoeff, Tom

    HTML Web Page That Shows Its Own Source Code Tom Verhoeff November 2009 1 Introduction A well source code. 2 Problem Statement The challenge is to write an HTML web page (using some scripting) that has the following properties: · The web page must conform to HTML 4.01 Strict, as approved by the W3C

  10. Imaging agents for in vivo magnetic resonance and scintigraphic imaging

    DOE Patents [OSTI]

    Engelstad, B.L.; Raymond, K.N.; Huberty, J.P.; White, D.L.

    1991-04-23

    Methods are provided for in vivo magnetic resonance imaging and/or scintigraphic imaging of a subject using chelated transition metal and lanthanide metal complexes. Novel ligands for these complexes are provided. No Drawings

  11. Image Charge Differential

    E-Print Network [OSTI]

    Weston, Ken

    Image Charge Differential Amplifier FT 0 Crude Oil Time (s) 543210 Frequency (kHz) m/z m q B f organic molecules such as heavy crude oils. Heavy crudes are some of the most complex organic mixtures found in nature. As the crude oil industry grows in size and demand for crude oil increases, techniques

  12. Time-Encoded Imagers.

    SciTech Connect (OSTI)

    Marleau, Peter; Brubaker, Erik

    2014-11-01

    This report provides a short overview of the DNN R&D funded project, Time-Encoded Imagers. The project began in FY11 and concluded in FY14. The Project Description below provides the overall motivation and objectives for the project as well as a summary of programmatic direction. It is followed by a short description of each task and the resulting deliverables.

  13. BET protein inhibition shows efficacy against JAK2V617F driven neoplasms

    E-Print Network [OSTI]

    Wyspia?ska, B. S.; Bannister, A. J.; Barbieri, I.; Nangalia, J.; Godfrey, A.; Calero-Nieto, F. J.; Robson, S.; Rioja, I.; Li, J.; Wiese, M.; Cannizzaro, E.; Dawson, M. A.; Huntly, B.; Prinjha, R. K.; Green, A. R.; Gottgens, B.; Kouzarides, T.

    2013-09-06

    major therapeutic target for a range of hematopoietic malignancies, yet given its nature as a small nuclear protein, it has been difficult to think of efficient therapeutic strategies by which its inhibit its action. By showing efficient down... in preventing growth of colonies derived from homozygous JAK2V617F progenitor cells. In PV, expansion of a dominant homozygous JAK2V617F subclone appears to be fundamental to erythrocytosis and disease progression in many PV patients (23). Thus, our findings...

  14. Image Utility Assessment and a Relationship with Image Quality Assessment

    E-Print Network [OSTI]

    Hemami, Sheila S.

    Image Utility Assessment and a Relationship with Image Quality Assessment David M. Rouse , Romuald information to humans, and this paper investigates the utility assessment task, where human observers evaluate the usefulness of a natural image as a surrogate for a reference. Current QA algorithms implicitly assess utility

  15. Array combination for parallel imaging in Magnetic Resonance Imaging 

    E-Print Network [OSTI]

    Spence, Dan Kenrick

    2007-09-17

    In Magnetic Resonance Imaging, the time required to generate an image is proportional to the number of steps used to encode the spatial information. In rapid imaging, an array of coil elements and receivers are used to reduce the number of encoding...

  16. Instruments High-resolution imaging of

    E-Print Network [OSTI]

    Boppart, Stephen

    Instruments & Methods High-resolution imaging of gynecologic neoplasms using optical coherence and Gynecologists.) Diagnostic imaging methods available to gynecologists include magnetic resonance imaging (MRI

  17. Mathematical modeling of mechanical vibration assisted conductivity imaging

    E-Print Network [OSTI]

    Ammari, Habib; Kwon, Hyeuknam; Seo, Jin Keun; Woo, Eung Je

    2014-01-01

    This paper aims at mathematically modeling a new multi-physics conductivity imaging system incorporating mechanical vibrations simultaneously applied to an imaging object together with current injections. We perturb the internal conductivity distribution by applying time-harmonic mechanical vibrations on the boundary. This enhances the effects of any conductivity discontinuity on the induced internal current density distribution. Unlike other conductivity contrast enhancing frameworks, it does not require a prior knowledge of a reference data. In this paper, we provide a mathematical framework for this novel imaging modality. As an application of the vibration-assisted impedance imaging framework, we propose a new breast image reconstruction method in electrical impedance tomography (EIT). As its another application, we investigate a conductivity anomaly detection problem and provide an efficient location search algorithm. We show both analytically and numerically that the applied mechanical vibration increas...

  18. Image texture analysis of elastograms 

    E-Print Network [OSTI]

    Hussain, Fasahat

    1999-01-01

    and developed to make it a commercial product. 'This research applies image texture analysis to computer generated elastograms to obtain effective texture features. Four image analysis techniques, no-occurrence statistics, wavelet decomposition, frontal analysis...

  19. Topics in genomic image processing 

    E-Print Network [OSTI]

    Hua, Jianping

    2006-04-12

    The image processing methodologies that have been actively studied and developed now play a very significant role in the flourishing biotechnology research. This work studies, develops and implements several image processing techniques for M...

  20. Digital holographic imaging of microorganisms

    E-Print Network [OSTI]

    Wolf, Michael Trevor

    2006-01-01

    Imaging aquatic microorganisms in 3D space is of interest to biologists and ocean scientists seeking to understand the behavior of these organisms in their natural environments. In this research, digital holographic imaging ...

  1. Adolescents with current major depressive disorder show dissimilar patterns of age-related differences in ACC and thalamus

    E-Print Network [OSTI]

    Hagan, Cindy C.; Graham, Julia M. E.; Tait, Roger; Widmer, Barry; van Nieuwenhuizen, Adrienne O.; Ooi, Cinly; Whitaker, Kirstie J.; Simas, Tiago; Bullmore, Edward T.; Lennox, Belinda R.; Sahakian, Barbara J.; Goodyer, Ian M.; Suckling, John

    2015-01-07

    , we estimate our power for detecting true significant effects at 0.70. 2.2. Structural MRI (sMRI) data acquisition MR images of all subjects were acquired by a 3.0 Tesla Magnetom Trio Tim scanner (Siemens, Surrey, England) fitted with a quadrature... , gender and handedness) were used to generate a study specific template against which all remaining native grey matter partial volume images were subsequently non-linearly re-registered. Grey matter partial volume images from the subset of subjects were...

  2. Robust difference imaging of high surface brightness targets

    E-Print Network [OSTI]

    Kerins, E; Duke, J P; Gould, A; Han, C; Newsam, A; Park, B -G; Street, R

    2010-01-01

    Over the last two decades the Andromeda Galaxy (M31) has been something of a test-bed for methods aimed at obtaining accurate time-domain relative photometry within highly crowded fields. Difference imaging methods, originally pioneered towards M31, have evolved into sophisticated methods, such as the Optimal Image Subtraction (OIS) method of Alard & Lupton (1998), that today are most widely used to survey variable stars, transients and microlensing events in our own Galaxy. We show that modern difference image (DIA) algorithms such as OIS, whilst spectacularly successful towards the Milky Way bulge, may perform badly towards high surface brightness targets such as the M31 bulge. Poor results typically occur in the presence of common data systematics that scale with image flux such as internal reflections, scattered light, flat field errors or fringing. Using data from the Angstrom Project microlensing survey of the M31 bulge, we show that very good results are usually obtainable by first performing caref...

  3. Fourier Analysis of Ghost Imaging

    E-Print Network [OSTI]

    Honglin Liu; Jing Cheng; Yanfeng Bai; Shensheng Han

    2006-09-28

    Fourier analysis of ghost imaging (FAGI) is proposed in this paper to analyze the properties of ghost imaging with thermal light sources. This new theory is compatible with the general correlation theory of intensity fluctuation and could explain some amazed phenomena. Furthermore we design a series of experiments to verify the new theory and investigate the inherent properties of ghost imaging.

  4. Chester F. Carlson Imaging Science?

    E-Print Network [OSTI]

    Salvaggio, Carl

    GRADUATE STUDIES Chester F. Carlson CENTERfor IMAGING SCIENCE GORITHM 60 (b) #12;What is Imaging Science? Imaging Scientists work with science and technology that is focused on the creation. Research areas include: Remote Sensing Vision and Perception Astronomy and Space Science Computational

  5. KCP shows off the fun side of science | National Nuclear Security

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATIONIntroducingJobs2015Administration shows off the fun side

  6. Multimode imaging device

    DOE Patents [OSTI]

    Mihailescu, Lucian; Vetter, Kai M

    2013-08-27

    Apparatus for detecting and locating a source of gamma rays of energies ranging from 10-20 keV to several MeV's includes plural gamma ray detectors arranged in a generally closed extended array so as to provide Compton scattering imaging and coded aperture imaging simultaneously. First detectors are arranged in a spaced manner about a surface defining the closed extended array which may be in the form a circle, a sphere, a square, a pentagon or higher order polygon. Some of the gamma rays are absorbed by the first detectors closest to the gamma source in Compton scattering, while the photons that go unabsorbed by passing through gaps disposed between adjacent first detectors are incident upon second detectors disposed on the side farthest from the gamma ray source, where the first spaced detectors form a coded aperture array for two or three dimensional gamma ray source detection.

  7. BnNHL18A shows a localization change by stress-inducing chemical treatments

    SciTech Connect (OSTI)

    Lee, Suk-Bae; Ham, Byung-Kook; Park, Jeong Mee; Kim, Young Jin; Paek, Kyung-Hee . E-mail: khpaek95@korea.ac.kr

    2006-01-06

    The two genes, named BnNHL18A and BnNHL18B, showing sequence homology with Arabidopsis NDR1/HIN1-like (NHL) genes, were isolated from cDNA library prepared with oilseed rape (Brassica napus) seedlings treated with NaCl. The transcript level of BnNHL18A was increased by sodium chloride, ethephon, hydrogen peroxide, methyl jasmonate, or salicylic acid treatment. The coding regions of BnNHL18A and BnNHL18B contain a sarcolipin (SLN)-like sequence. Analysis of the localization of smGFP fusion proteins showed that BnNHL18A is mainly localized to endoplasmic reticulum (ER). This result suggests that the SLN-like sequence plays a role in retaining proteins in ER membrane in plants. In response to NaCl, hydrogen peroxide, ethephon, and salicylic acid treatments, the protein localization of BnNHL18A was changed. Our findings suggest a common function of BnNHL18A in biotic and abiotic stresses, and demonstrate the presence of the shared mechanism of protein translocalization between the responses to plant pathogen and to osmotic stress.

  8. Transmission area and two-photon correlated imaging

    E-Print Network [OSTI]

    Yanfeng Bai; Shensheng Han; Honglin Liu

    2006-11-03

    The relationship between transmission area of an object imaged and the visibility of its image is investigated in a lensless system. We show that the changes of the visibility are quite different when the transmission area is varied by different manners. An increase of the transmission by adding the slit number leads to a decrease of the visibility. While, the change is adverse when the slit width is widened for a given distance between two slits.

  9. Control of multiple excited image states around segmented carbon nanotubes

    E-Print Network [OSTI]

    Knörzer, J; Sadeghpour, H R; Schmelcher, P

    2015-01-01

    Electronic image states around segmented carbon nanotubes can be confined and shaped along the nanotube axis by engineering the image potential. We show how several such image states can be prepared simultaneously along the same nanotube. The inter-electronic distance can be controlled a priori by engineering tubes of specific geometries. High sensitivity to external electric and magnetic fields can be exploited to manipulate these states and their mutual long-range interactions. These building blocks provide access to a new kind of tailored interacting quantum systems.

  10. Fast Algorithms for Image Reconstruction with Application to Partially Parallel MR Imaging

    E-Print Network [OSTI]

    Yin, Wotao

    Fast Algorithms for Image Reconstruction with Application to Partially Parallel MR Imaging Yunmei. Key words. Image reconstruction, Variable splitting, TV denoising, Nonlinear optimization 1 from an emerging magnetic resonance (MR) medical imaging technique known as partially parallel imaging

  11. Lithium inclusion in indium metal-organic frameworks showing increased surface area and hydrogen adsorption

    SciTech Connect (OSTI)

    Bosch, Mathieu; Zhang, Muwei; Feng, Dawei; Yuan, Shuai; Wang, Xuan [Department of Chemistry, Texas A and M University, College Station, Texas 77842 (United States); Chen, Ying-Pin [Department of Materials Science and Engineering, Texas A and M University, College Station, Texas 77842 (United States); Zhou, Hong-Cai, E-mail: zhou@mail.chem.tamu.edu [Department of Chemistry, Texas A and M University, College Station, Texas 77842 (United States); Department of Materials Science and Engineering, Texas A and M University, College Station, Texas 77842 (United States)

    2014-12-01

    Investigation of counterion exchange in two anionic In-Metal-Organic Frameworks (In-MOFs) showed that partial replacement of disordered ammonium cations was achieved through the pre-synthetic addition of LiOH to the reaction mixture. This resulted in a surface area increase of over 1600% in (Li [In(1,3 ? BDC){sub 2}]){sub n} and enhancement of the H{sub 2} uptake of approximately 275% at 80?000 Pa at 77 K. This method resulted in frameworks with permanent lithium content after repeated solvent exchange as confirmed by inductively coupled plasma mass spectrometry. Lithium counterion replacement appears to increase porosity after activation through replacement of bulkier, softer counterions and demonstrates tuning of pore size and properties in MOFs.

  12. Bistatic SAR: Imagery & Image Products.

    SciTech Connect (OSTI)

    Yocky, David A.; Wahl, Daniel E.; Jakowatz, Charles V,

    2014-10-01

    While typical SAR imaging employs a co-located (monostatic) RADAR transmitter and receiver, bistatic SAR imaging separates the transmitter and receiver locations. The transmitter and receiver geometry determines if the scattered signal is back scatter, forward scatter, or side scatter. The monostatic SAR image is backscatter. Therefore, depending on the transmitter/receiver collection geometry, the captured imagery may be quite different that that sensed at the monostatic SAR. This document presents imagery and image products formed from captured signals during the validation stage of the bistatic SAR research. Image quality and image characteristics are discussed first. Then image products such as two-color multi-view (2CMV) and coherent change detection (CCD) are presented.

  13. Photogrammetry & Machine Vision 1. Image sensors

    E-Print Network [OSTI]

    Giger, Christine

    Photogrammetry & Machine Vision 1. Image sensors (a) Fundamentals of image sensors (b) CCD image. Remondino, N. D'Apuzzo Photogrammetry and Machine Vision ­ 1. Measurement in images (b) Camera calibration of Photogrammetry and Machine Vision Fully understand: 1. Image based 3D and 4D measurement 2. Image based 3D

  14. Combustion oscillation: Chemical control showing mechanistic link to recirculation zone purge time

    SciTech Connect (OSTI)

    Gemmen, R.S.; Richards, G.A.; Yip, M.J.; Norton, T.S.

    1995-12-01

    Active control mechanisms are being examined for lean premix combustion applications, such as gas turbine generators. Lean premix combustors are susceptible to large combustion oscillations, particularly when driven very lean to achieve low NOx. While past design work has been focussed on understanding the source of the oscillation and modifying the combustor to avoid such oscillations, commercial combustion designers have more recently considered applying new control elements. As part of the U.S. Department of Energy`s Advanced Gas Turbine Systems Program, the Morgantown Energy Technology Center is investigating various active control techniques. This paper presents results from experiments studying the effect of pilot fuel modulation on combustor oscillation and pollutant emissions for a pilot stabilized dump swirl combustor, typical of gas turbine combustors. The results show that a significant level of attenuation can be achieved in the combustor pressure oscillation (50 to 90 percent) while only moderately affecting pollutant emissions. The control mechanism producing the attenuation is shown to be purely chemical in nature, rather than fluid mechanic. In addition, the frequency region over which control is obtained is shown to be related to the recirculation zone purge time. For this reason, control can be achieved at control frequencies much lower than the frequency of oscillation.

  15. Direct mass measurements of Cd isotopes show strong shell gap at N=82

    E-Print Network [OSTI]

    R. Knöbel; M. Diwisch; F. Bosch; D. Boutin; L. Chen; C. Dimopoulou; A. Dolinskii; B. Franczak; B. Franzke; H. Geissel; M. Hausmann; C. Kozhuharov; J. Kurcewicz; S. A. Litvinova; G. Martínez-Pinedo; M. Matoš; M. Mazzocco; G. Münzenberg; S. Nakajima; C. Nociforo; F. Nolden; T. Ohtsubo; A. Ozawa; Z. Patyk; W. R. Plaß; C. Scheidenberger; J. Stadlmann; M. Steck; B. Sun; T. Suzuki; P. Walker; H. Weick; M. -R. Wu; M. Winkler; T. Yamaguchi

    2015-07-16

    A $^{238}$U projectile beam was used to create cadmium isotopes via abrasion-fission at 410 MeV/u in a beryllium target at the entrance of the in-flight separator FRS at GSI. The fission fragments were separated with the FRS and injected into the isochronous storage ring ESR for mass measurements. The Isochronous Mass Spectrometry (IMS) was performed under two different experimental conditions, with and without B$\\rho$-tagging at the dispersive central focal plane of the FRS. In the experiment with B$\\rho$-tagging the magnetic rigidity of the injected fragments was determined by an accuracy of $2\\times 10^{-4}$. A new method of data analysis, using a correlation matrix for the combined data set from both experiments, has provided mass values for 25 different isotopes for the first time. The high selectivity and sensitivity of the experiment and analysis has given access even to rare isotopes detected with a few atoms per week. In this letter we present for the $^{129,130,131}$Cd isotopes mass values directly measured for the first time. The Cd results clearly show a very pronounced shell effect at $N=82$ which is in agreement with the conclusion from $\\gamma$-ray spectroscopy of $^{130}$Cd and confirms the assumptions of modern shell-model calculations.

  16. Colloidal graphite/graphene nanostructures using collagen showing enhanced thermal conductivity

    E-Print Network [OSTI]

    Soumya Bhattacharya; Purbarun Dhar; Sarit K Das; Ranjan Ganguly; Thomas Webster; Suprabha Nayar

    2015-11-27

    Time kinetics of interaction of natural graphite (GR) to colloidal graphene (G) collagen (C) nanocomposites was studied at ambient conditions, and observed that just one day at ambient conditions is enough to form colloidal graphene directly from graphite using the protein collagen. Neither controlled temperature and pressure ambiance nor sonication was needed for the same; thereby rendering the process biomimetic. Detailed spectroscopy, X ray diffraction, electron microscopy as well as fluorescence and luminescence assisted characterization of the colloidal dispersions on day one and day seven reveals graphene and collagen interaction and subsequent rearrangement to form an open structure. Detailed confocal microscopy, in the liquid state, reveals the initial attack at the zigzag edges of GR, the enhancement of auto fluorescence and finally the opening up of graphitic stacks of GR to form near transparent G. Atomic Force Microscopy studies prove the existence of both collagen and graphene and the disruption of periodicity at the atomic level. Thermal conductivity of the colloid shows a 17% enhancement for a volume fraction of less than 0.00005 of G. Time variant increase in thermal conductivity provides qualitative evidence for the transient exfoliation of GR to G. The composite reveals interesting properties that could propel it as a future material for advanced bio applications including therapeutics.

  17. Device for wavelength-selective imaging

    DOE Patents [OSTI]

    Frangioni, John V. (Wayland, MA)

    2010-09-14

    An imaging device captures both a visible light image and a diagnostic image, the diagnostic image corresponding to emissions from an imaging medium within the object. The visible light image (which may be color or grayscale) and the diagnostic image may be superimposed to display regions of diagnostic significance within a visible light image. A number of imaging media may be used according to an intended application for the imaging device, and an imaging medium may have wavelengths above, below, or within the visible light spectrum. The devices described herein may be advantageously packaged within a single integrated device or other solid state device, and/or employed in an integrated, single-camera medical imaging system, as well as many non-medical imaging systems that would benefit from simultaneous capture of visible-light wavelength images along with images at other wavelengths.

  18. COMBINING CLASSIFIERS FOR BONE FRACTURE DETECTION IN X-RAY IMAGES Vineta Lai Fun Lum, Wee Kheng Leow, Ying Chen,

    E-Print Network [OSTI]

    Leow, Wee Kheng

    COMBINING CLASSIFIERS FOR BONE FRACTURE DETECTION IN X-RAY IMAGES Vineta Lai Fun Lum, Wee Kheng combination methods ap- plied to the detection of bone fractures in x-ray images. Test results show, only about 12% of them contained fractured femurs. For radius images, about 30% of 145 consecu- tive

  19. MULTISPECTRAL THERMAL IMAGER - OVERVIEW

    SciTech Connect (OSTI)

    P. WEBER

    2001-03-01

    The Multispectral Thermal Imager satellite fills a new and important role in advancing the state of the art in remote sensing sciences. Initial results with the full calibration system operating indicate that the system was already close to achieving the very ambitious goals which we laid out in 1993, and we are confident of reaching all of these goals as we continue our research and improve our analyses. In addition to the DOE interests, the satellite is tasked about one-third of the time with requests from other users supporting research ranging from volcanology to atmospheric sciences.

  20. Multiprocessor computing for images

    SciTech Connect (OSTI)

    Cantoni, V. ); Levialdi, S. )

    1988-08-01

    A review of image processing systems developed until now is given, highlighting the weak points of such systems and the trends that have dictated their evolution through the years producing different generations of machines. Each generation may be characterized by the hardware architecture, the programmability features and the relative application areas. The need for multiprocessing hierarchical systems is discussed focusing on pyramidal architectures. Their computational paradigms, their virtual and physical implementation, their programming and software requirements, and capabilities by means of suitable languages, are discussed.

  1. Superconductive imaging surface magnetometer

    DOE Patents [OSTI]

    Overton, Jr., William C. (Los Alamos, NM); van Hulsteyn, David B. (Santa Fe, NM); Flynn, Edward R. (Los Alamos, NM)

    1991-01-01

    An improved pick-up coil system for use with Superconducting Quantum Interference Device gradiometers and magnetometers involving the use of superconducting plates near conventional pick-up coil arrangements to provide imaging of nearby dipole sources and to deflect environmental magnetic noise away from the pick-up coils. This allows the practice of gradiometry and magnetometry in magnetically unshielded environments. One embodiment uses a hemispherically shaped superconducting plate with interior pick-up coils, allowing brain wave measurements to be made on human patients. another embodiment using flat superconducting plates could be used in non-destructive evaluation of materials.

  2. The Cosmic Background Imager

    E-Print Network [OSTI]

    S. Padin; M. C. Shepherd; J. K. Cartwright; R. G. Keeney; B. S. Mason; T. J. Pearson; A. C. S. Readhead; W. L. Schaal; J. Sievers; P. S. Udomprasert; J. K. Yamasaki; W. L. Holzapfel; J. E. Carlstrom; M. Joy; S. T. Myers; A. Otarola

    2001-10-05

    Design and performance details are given for the Cosmic Background Imager (CBI), an interferometer array that is measuring the power spectrum of fluctuations in the cosmic microwave background radiation (CMBR) for multipoles in the range 400 switching scheme is used to reject cross-talk and low-frequency pick-up in the signal processing system. The CBI has a 3-axis mount which allows the tracking platform to be rotated about the optical axis, providing improved (u,v) coverage and a powerful discriminant against false signals generated in the receiving electronics. Rotating the tracking platform also permits polarization measurements when some of the antennas are configured for the orthogonal polarization.

  3. Radiation imaging apparatus

    DOE Patents [OSTI]

    Anger, H.O.; Martin, D.C.; Lampton, M.L.

    1983-07-26

    A radiation imaging system using a charge multiplier and a position sensitive anode in the form of periodically arranged sets of interconnected anode regions for detecting the position of the centroid of a charge cloud arriving thereat from the charge multiplier. Various forms of improved position sensitive anodes having single plane electrode connections are disclosed. Various analog and digital signal processing systems are disclosed, including systems which use the fast response of microchannel plates, anodes and preamps to perform scintillation pulse height analysis digitally. 15 figs.

  4. Radiation imaging apparatus

    DOE Patents [OSTI]

    Anger, Hal O. (Berkeley, CA); Martin, Donn C. (Berkeley, CA); Lampton, Michael L. (Berkeley, CA)

    1983-01-01

    A radiation imaging system using a charge multiplier and a position sensitive anode in the form of periodically arranged sets of interconnected anode regions for detecting the position of the centroid of a charge cloud arriving thereat from the charge multiplier. Various forms of improved position sensitive anodes having single plane electrode connections are disclosed. Various analog and digital signal processing systems are disclosed, including systems which use the fast response of microchannel plates, anodes and preamps to perform scintillation pulse height analysis digitally.

  5. User Defined Images

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopmentat LENA|Upcoming Purchasing andUser Defined Images User

  6. ImageJ

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.FoodHydropower,PrincipalIdaho NationalAImageJ ImageJ

  7. Fourier plane image amplifier

    DOE Patents [OSTI]

    Hackel, L.A.; Hermann, M.R.; Dane, C.B.; Tiszauer, D.H.

    1995-12-12

    A solid state laser is frequency tripled to 0.3 {micro}m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only about 1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power. 1 fig.

  8. Fourier plane image amplifier

    DOE Patents [OSTI]

    Hackel, Lloyd A. (Livermore, CA); Hermann, Mark R. (San Ramon, CA); Dane, C. Brent (Livermore, CA); Tiszauer, Detlev H. (Tracy, CA)

    1995-01-01

    A solid state laser is frequency tripled to 0.3 .mu.m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only .about.1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power.

  9. Image-based occupancy sensor

    DOE Patents [OSTI]

    Polese, Luigi Gentile; Brackney, Larry

    2015-05-19

    An image-based occupancy sensor includes a motion detection module that receives and processes an image signal to generate a motion detection signal, a people detection module that receives the image signal and processes the image signal to generate a people detection signal, a face detection module that receives the image signal and processes the image signal to generate a face detection signal, and a sensor integration module that receives the motion detection signal from the motion detection module, receives the people detection signal from the people detection module, receives the face detection signal from the face detection module, and generates an occupancy signal using the motion detection signal, the people detection signal, and the face detection signal, with the occupancy signal indicating vacancy or occupancy, with an occupancy indication specifying that one or more people are detected within the monitored volume.

  10. Lensless Imaging of Magnetic Nanostructures

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

    Print Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying...

  11. Hybrid tomography for conductivity imaging

    E-Print Network [OSTI]

    T. Widlak; O. Scherzer

    2012-03-20

    Hybrid imaging techniques utilize couplings of physical modalities -- they are called hybrid, because, typically, the excitation and measurement quantities belong to different modalities. Recently there has been an enormous research interest in this area because these methods promise very high resolution. In this paper we give a review on hybrid tomography methods for \\emph{electrical conductivity} imaging. The reviewed imaging methods utilize couplings between electric, magnetic and ultrasound modalities. By this it is possible to perform high-resolution electrical impedance imaging and to overcome the low-resolution problem of electric impedance tomography.

  12. Lensless Imaging of Magnetic Nanostructures

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

    this technique has been especially popular in imaging such complex structures as aerogels and yeast cells. When applying the CDI technique to a magnetic system, the same...

  13. Thermal imaging diagnostics of high-current electron beams

    SciTech Connect (OSTI)

    Pushkarev, A.; Kholodnaya, G.; Sazonov, R.; Ponomarev, D. [Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050 (Russian Federation)

    2012-10-15

    The thermal imaging diagnostics of measuring pulsed electron beam energy density is presented. It provides control of the electron energy spectrum and a measure of the density distribution of the electron beam cross section, the spatial distribution of electrons with energies in the selected range, and the total energy of the electron beam. The diagnostics is based on the thermal imager registration of the imaging electron beam thermal print in a material with low bulk density and low thermal conductivity. Testing of the thermal imaging diagnostics has been conducted on a pulsed electron accelerator TEU-500. The energy of the electrons was 300-500 keV, the density of the electron current was 0.1-0.4 kA/cm{sup 2}, the duration of the pulse (at half-height) was 60 ns, and the energy in the pulse was up to 100 J. To register the thermal print, a thermal imager Fluke-Ti10 was used. Testing showed that the sensitivity of a typical thermal imager provides the registration of a pulsed electron beam heat pattern within one pulse with energy density over 0.1 J/cm{sup 2} (or with current density over 10 A/cm{sup 2}, pulse duration of 60 ns and electron energy of 400 keV) with the spatial resolution of 0.9-1 mm. In contrast to the method of using radiosensitive (dosimetric) materials, thermal imaging diagnostics does not require either expensive consumables, or plenty of processing time.

  14. X-ray Moiré deflectometry using synthetic reference images

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

    Stutman, Dan; Valdivia, Maria Pia; Finkenthal, Michael

    2015-06-25

    Moiré fringe deflectometry with grating interferometers is a technique that enables refraction-based x-ray imaging using a single exposure of an object. To obtain the refraction image, the method requires a reference fringe pattern (without the object). Our study shows that, in order to avoid artifacts, the reference pattern must be exactly matched in phase with the object fringe pattern. In experiments, however, it is difficult to produce a perfectly matched reference pattern due to unavoidable interferometer drifts. We present a simple method to obtain matched reference patterns using a phase-scan procedure to generate synthetic Moiré images. As a result, themore »method will enable deflectometric diagnostics of transient phenomena such as laser-produced plasmas and could improve the sensitivity and accuracy of medical phase-contrast imaging.« less

  15. A new compact, high sensitivity neutron imaging system

    SciTech Connect (OSTI)

    Caillaud, T.; Landoas, O.; Briat, M.; Rosse, B.; Thfoin, I.; Philippe, F.; Casner, A.; Bourgade, J. L.; Disdier, L.; Glebov, V. Yu.; Marshall, F. J.; Sangster, T. C.; Park, H. S.; Robey, H. F.; Amendt, P.

    2012-10-15

    We have developed a new small neutron imaging system (SNIS) diagnostic for the OMEGA laser facility. The SNIS uses a penumbral coded aperture and has been designed to record images from low yield (10{sup 9}-10{sup 10} neutrons) implosions such as those using deuterium as the fuel. This camera was tested at OMEGA in 2009 on a rugby hohlraum energetics experiment where it recorded an image at a yield of 1.4 Multiplication-Sign 10{sup 10}. The resolution of this image was 54 {mu}m and the camera was located only 4 meters from target chamber centre. We recently improved the instrument by adding a cooled CCD camera. The sensitivity of the new camera has been fully characterized using a linear accelerator and a {sup 60}Co {gamma}-ray source. The calibration showed that the signal-to-noise ratio could be improved by using raw binning detection.

  16. Classifying and Segmenting Microscopy Images Using Convolutional Multiple Instance Learning

    E-Print Network [OSTI]

    Oren Z. Kraus; Lei Jimmy Ba; Brendan Frey

    2015-11-17

    Convolutional neural networks (CNN) have achieved state of the art performance on both classification and segmentation tasks. Applying CNNs to microscopy images is challenging due to the lack of datasets labeled at the single cell level. We extend the application of CNNs to microscopy image classification and segmentation using multiple instance learning (MIL). We present the adaptive Noisy-AND MIL pooling function, a new MIL operator that is robust to outliers. Combining CNNs with MIL enables training CNNs using full resolution microscopy images with global labels. We base our approach on the similarity between the aggregation function used in MIL and pooling layers used in CNNs. We show that training MIL CNNs end-to-end outperforms several previous methods on both mammalian and yeast microscopy images without requiring any segmentation steps.

  17. Iterative Self-Dual Reconstruction on Radar Image Recovery

    SciTech Connect (OSTI)

    Martins, Charles; Medeiros, Fatima; Ushizima, Daniela; Bezerra, Francisco; Marques, Regis; Mascarenhas, Nelson

    2010-05-21

    Imaging systems as ultrasound, sonar, laser and synthetic aperture radar (SAR) are subjected to speckle noise during image acquisition. Before analyzing these images, it is often necessary to remove the speckle noise using filters. We combine properties of two mathematical morphology filters with speckle statistics to propose a signal-dependent noise filter to multiplicative noise. We describe a multiscale scheme that preserves sharp edges while it smooths homogeneous areas, by combining local statistics with two mathematical morphology filters: the alternating sequential and the self-dual reconstruction algorithms. The experimental results show that the proposed approach is less sensitive to varying window sizes when applied to simulated and real SAR images in comparison with standard filters.

  18. A novel zirconium K{alpha} imager for high energy density physics research

    SciTech Connect (OSTI)

    Akli, K. U.; Jiang, S.; Storm, M. S.; Krygier, A.; Freeman, R. R.; Sanchez del Rio, M.; Stephens, R. B.; Pereira, N. R.; Baronova, E. O.; Theobald, W.; Ping, Y.; McLean, H. S.; Patel, P. K.; Key, M. H.

    2011-12-15

    We report on the development and characterization of a zirconium K{alpha} imager for high energy density physics research. The imager consists of a spherically bent quartz crystal operating at 15.7 keV photon energy. We compare the performance of the imager in terms of integrated reflectivity (R{sub int}) and temperature dependent collection efficiency ({eta}{sub Te}) to that of the widely used Cu K{alpha} imager. Our collisional-radiative simulations show that the new imager can be reliably used up to 250 eV plasma temperature. Monte Carlo simulations show that for a 25 {mu}m thick tracer layer of zirconium, the contribution to K{alpha} production from photo-pumping is only 2%. We present, for the first time, 2D spatially resolved images of zirconium plasmas generated by a high intensity short pulse laser interacting with Zr solid targets.

  19. Toponome Imaging System (TIS): imaging the proteome with functional resolution

    E-Print Network [OSTI]

    Cai, Long

    established as an automated imaging technology capable of high- performance, high-content applications at continuous intensity levels for the first time.TIS directly addresses protein-network architecture. A breakthrough in fluorescence imaging has been reported using multi-epitope-ligand cartography (MELC) technology

  20. MANSFIELD ET AL.: TRANSFORMING IMAGE COMPLETION 1 Transforming Image Completion

    E-Print Network [OSTI]

    Kohli, Pushmeet

    .K. Abstract Image completion is an important photo-editing task which involves synthetically filling a hole-of-the-art techniques. 1 Introduction Image completion is an important photo-editing task which involves synthetically the pixel traversal order critical. A number of user-driven [12] and intelligent [3] heuristics have been

  1. Application of Parallel Imaging to Murine Magnetic Resonance Imaging 

    E-Print Network [OSTI]

    Chang, Chieh-Wei 1980-

    2012-09-21

    . This dissertation describes foundational level work to enable parallel imaging of mice on a 4.7 Tesla/40 cm bore research scanner. Reducing the size of the hardware setup associated with typical parallel imaging was an integral part of achieving the work, as animal...

  2. Validation of Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled and seismic test 2012

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

    Jaffe, Todd

    2012-01-01

    Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled & seismic test, 2012

  3. Validation of Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled and seismic test 2012

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

    Jaffe, Todd

    Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled & seismic test, 2012

  4. Super-resolution deep imaging with hollow Bessel beam STED microscopy

    E-Print Network [OSTI]

    Yu, Wentao; Dong, Dashan; Yang, Xusan; Xiao, Yunfeng; Gong, Qihuang; Xi, Peng; Shi, Kebin

    2015-01-01

    Stimulated emission depletion (STED) microscopy has become a powerful imaging and localized excitation method beating the diffraction barrier for improved lateral spatial resolution in cellular imaging, lithography, etc. Due to specimen-induced aberrations and scattering distortion, it has been a great challenge for STED to maintain consistent lateral resolution deeply inside the specimens. Here we report on a deep imaging STED microscopy by using Gaussian beam for excitation and hollow Bessel beam for depletion (GB-STED). The proposed scheme shows the improved imaging depth up to ~155{\\mu}m in solid agarose sample, ~115{\\mu}m in PDMS and ~100{\\mu}m in phantom of gray matter in brain tissue with consistent super resolution, while the standard STED microscopy shown a significantly reduced lateral resolution at the same imaging depth. The results indicate the excellent imaging penetration capability of GB-STED, making it a promising tool for deep 3D imaging optical nanoscopy and laser fabrication.

  5. Processing Visual Images

    SciTech Connect (OSTI)

    Litke, Alan (UC Santa Cruz) [UC Santa Cruz

    2006-03-27

    The back of the eye is lined by an extraordinary biological pixel detector, the retina. This neural network is able to extract vital information about the external visual world, and transmit this information in a timely manner to the brain. In this talk, Professor Litke will describe a system that has been implemented to study how the retina processes and encodes dynamic visual images. Based on techniques and expertise acquired in the development of silicon microstrip detectors for high energy physics experiments, this system can simultaneously record the extracellular electrical activity of hundreds of retinal output neurons. After presenting first results obtained with this system, Professor Litke will describe additional applications of this incredible technology.

  6. Imaging synthetic aperture radar

    DOE Patents [OSTI]

    Burns, Bryan L. (Tijeras, NM); Cordaro, J. Thomas (Albuquerque, NM)

    1997-01-01

    A linear-FM SAR imaging radar method and apparatus to produce a real-time image by first arranging the returned signals into a plurality of subaperture arrays, the columns of each subaperture array having samples of dechirped baseband pulses, and further including a processing of each subaperture array to obtain coarse-resolution in azimuth, then fine-resolution in range, and lastly, to combine the processed subapertures to obtain the final fine-resolution in azimuth. Greater efficiency is achieved because both the transmitted signal and a local oscillator signal mixed with the returned signal can be varied on a pulse-to-pulse basis as a function of radar motion. Moreover, a novel circuit can adjust the sampling location and the A/D sample rate of the combined dechirped baseband signal which greatly reduces processing time and hardware. The processing steps include implementing a window function, stabilizing either a central reference point and/or all other points of a subaperture with respect to doppler frequency and/or range as a function of radar motion, sorting and compressing the signals using a standard fourier transforms. The stabilization of each processing part is accomplished with vector multiplication using waveforms generated as a function of radar motion wherein these waveforms may be synthesized in integrated circuits. Stabilization of range migration as a function of doppler frequency by simple vector multiplication is a particularly useful feature of the invention; as is stabilization of azimuth migration by correcting for spatially varying phase errors prior to the application of an autofocus process.

  7. Simulation of air shower image in fluorescence light based on energy deposits derived from CORSIKA

    E-Print Network [OSTI]

    D. Gora; D. Heck; P. Homola; H. Klages; J. Pekala; M. Risse; B. Wilczynska; H. Wilczynski

    2004-03-01

    Spatial distributions of energy deposited by an extensive air shower in the atmosphere through ionization, as obtained from the CORSIKA simulation program, are used to find the fluorescence light distribution in the optical image of the shower. The shower image derived in this way is somewhat smaller than that obtained from the NKG lateral distribution of particles in the shower. The size of the image shows a small dependence on the primary particle type.

  8. Image Processing Feb. 26, 2013

    E-Print Network [OSTI]

    Erdem, Erkut

    : Partial Differential Equations and the Calculus ofVariations, G. Aubert and P. Kornprobst, 2nd Edition later #12;About BIL717 · This course provides a comprehensive overview of fundamental topics in image ForVision And Image Processing, Edited by A. Blake, P. Kohli and C. Rother, MIT Press, 2011 #12

  9. Astronomical Image and Signal Processing

    E-Print Network [OSTI]

    Starck, Jean-Luc

    of the amount of information in the image. Shannon [38], in the framework of communication theory, suggested and where, and the statistical one, which gives a quantity rela- tive to the amount of information. Another to measure the informa- tion in an astronomical image, in both a statistical and a deterministic way

  10. Video surveillance with speckle imaging

    DOE Patents [OSTI]

    Carrano, Carmen J. (Livermore, CA); Brase, James M. (Pleasanton, CA)

    2007-07-17

    A surveillance system looks through the atmosphere along a horizontal or slant path. Turbulence along the path causes blurring. The blurring is corrected by speckle processing short exposure images recorded with a camera. The exposures are short enough to effectively freeze the atmospheric turbulence. Speckle processing is used to recover a better quality image of the scene.

  11. Simultaneous acquisition of differing image types

    DOE Patents [OSTI]

    Demos, Stavros G

    2012-10-09

    A system in one embodiment includes an image forming device for forming an image from an area of interest containing different image components; an illumination device for illuminating the area of interest with light containing multiple components; at least one light source coupled to the illumination device, the at least one light source providing light to the illumination device containing different components, each component having distinct spectral characteristics and relative intensity; an image analyzer coupled to the image forming device, the image analyzer decomposing the image formed by the image forming device into multiple component parts based on type of imaging; and multiple image capture devices, each image capture device receiving one of the component parts of the image. A method in one embodiment includes receiving an image from an image forming device; decomposing the image formed by the image forming device into multiple component parts based on type of imaging; receiving the component parts of the image; and outputting image information based on the component parts of the image. Additional systems and methods are presented.

  12. Image reconstruction for a Positron Emission Tomograph optimized for breast cancer imaging

    SciTech Connect (OSTI)

    Virador, Patrick R.G.

    2000-04-01

    The author performs image reconstruction for a novel Positron Emission Tomography camera that is optimized for breast cancer imaging. This work addresses for the first time, the problem of fully-3D, tomographic reconstruction using a septa-less, stationary, (i.e. no rotation or linear motion), and rectangular camera whose Field of View (FOV) encompasses the entire volume enclosed by detector modules capable of measuring Depth of Interaction (DOI) information. The camera is rectangular in shape in order to accommodate breasts of varying sizes while allowing for soft compression of the breast during the scan. This non-standard geometry of the camera exacerbates two problems: (a) radial elongation due to crystal penetration and (b) reconstructing images from irregularly sampled data. Packing considerations also give rise to regions in projection space that are not sampled which lead to missing information. The author presents new Fourier Methods based image reconstruction algorithms that incorporate DOI information and accommodate the irregular sampling of the camera in a consistent manner by defining lines of responses (LORs) between the measured interaction points instead of rebinning the events into predefined crystal face LORs which is the only other method to handle DOI information proposed thus far. The new procedures maximize the use of the increased sampling provided by the DOI while minimizing interpolation in the data. The new algorithms use fixed-width evenly spaced radial bins in order to take advantage of the speed of the Fast Fourier Transform (FFT), which necessitates the use of irregular angular sampling in order to minimize the number of unnormalizable Zero-Efficiency Bins (ZEBs). In order to address the persisting ZEBs and the issue of missing information originating from packing considerations, the algorithms (a) perform nearest neighbor smoothing in 2D in the radial bins (b) employ a semi-iterative procedure in order to estimate the unsampled data and (c) mash the in plane projections, i.e. 2D data, with the projection data from the first oblique angles, which are then used to reconstruct the preliminary image in the 3D Reprojection Projection algorithm. The author presents reconstructed images of point sources and extended sources in both 2D and 3D. The images show that the camera is anticipated to eliminate radial elongation and produce artifact free and essentially spatially isotropic images throughout the entire FOV. It has a resolution of 1.50 {+-} 0.75 mm FWHM near the center, 2.25 {+-}0.75 mm FWHM in the bulk of the FOV, and 3.00 {+-} 0.75 mm FWHM near the edge and corners of the FOV.

  13. Iterative image-domain decomposition for dual-energy CT

    SciTech Connect (OSTI)

    Niu, Tianye; Dong, Xue; Petrongolo, Michael; Zhu, Lei

    2014-04-15

    Purpose: Dual energy CT (DECT) imaging plays an important role in advanced imaging applications due to its capability of material decomposition. Direct decomposition via matrix inversion suffers from significant degradation of image signal-to-noise ratios, which reduces clinical values of DECT. Existing denoising algorithms achieve suboptimal performance since they suppress image noise either before or after the decomposition and do not fully explore the noise statistical properties of the decomposition process. In this work, the authors propose an iterative image-domain decomposition method for noise suppression in DECT, using the full variance-covariance matrix of the decomposed images. Methods: The proposed algorithm is formulated in the form of least-square estimation with smoothness regularization. Based on the design principles of a best linear unbiased estimator, the authors include the inverse of the estimated variance-covariance matrix of the decomposed images as the penalty weight in the least-square term. The regularization term enforces the image smoothness by calculating the square sum of neighboring pixel value differences. To retain the boundary sharpness of the decomposed images, the authors detect the edges in the CT images before decomposition. These edge pixels have small weights in the calculation of the regularization term. Distinct from the existing denoising algorithms applied on the images before or after decomposition, the method has an iterative process for noise suppression, with decomposition performed in each iteration. The authors implement the proposed algorithm using a standard conjugate gradient algorithm. The method performance is evaluated using an evaluation phantom (Catphan©600) and an anthropomorphic head phantom. The results are compared with those generated using direct matrix inversion with no noise suppression, a denoising method applied on the decomposed images, and an existing algorithm with similar formulation as the proposed method but with an edge-preserving regularization term. Results: On the Catphan phantom, the method maintains the same spatial resolution on the decomposed images as that of the CT images before decomposition (8 pairs/cm) while significantly reducing their noise standard deviation. Compared to that obtained by the direct matrix inversion, the noise standard deviation in the images decomposed by the proposed algorithm is reduced by over 98%. Without considering the noise correlation properties in the formulation, the denoising scheme degrades the spatial resolution to 6 pairs/cm for the same level of noise suppression. Compared to the edge-preserving algorithm, the method achieves better low-contrast detectability. A quantitative study is performed on the contrast-rod slice of Catphan phantom. The proposed method achieves lower electron density measurement error as compared to that by the direct matrix inversion, and significantly reduces the error variation by over 97%. On the head phantom, the method reduces the noise standard deviation of decomposed images by over 97% without blurring the sinus structures. Conclusions: The authors propose an iterative image-domain decomposition method for DECT. The method combines noise suppression and material decomposition into an iterative process and achieves both goals simultaneously. By exploring the full variance-covariance properties of the decomposed images and utilizing the edge predetection, the proposed algorithm shows superior performance on noise suppression with high image spatial resolution and low-contrast detectability.

  14. Associative Classifiers for Medical Images Maria-Luiza Antonie, Osmar R. Zaiane, and Alexandru Coman

    E-Print Network [OSTI]

    Zaiane, Osmar R.

    , acoman}@cs.ualberta.ca Abstract. This paper presents two classification systems for medical images based in a classification model. The experimental results show that the method performs well, reaching over 80% in accuracy mining architecture for image classification. 1 Introduction Association rule mining is one of the most

  15. Single mimivirus particles intercepted and imaged with an X-ray laser (CXIDB ID 2)

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

    Seibert, M. Marvin; Ekeberg, Tomas

    These are the files used to reconstruct the images in the paper "Single Mimivirus particles intercepted and imaged with an X-ray laser". Besides the diffracted intensities, the Hawk configuration files used for the reconstructions are also provided. The files from CXIDB ID 2 are the pattern and configuration files for the pattern showed in Figure 2b in the paper.

  16. Distant touch hydrodynamic imaging with an artificial lateral line Coombs, Douglas L. Jones, and Chang Liu

    E-Print Network [OSTI]

    Jones, Douglas L.

    augment sonar and vision systems. We show that the artificial lateral line can successfully perform dipoleDistant touch hydrodynamic imaging with an artificial lateral line Coombs, Douglas L. Jones reprints, see: Notes: #12;Distant touch hydrodynamic imaging with an artificial lateral line Yingchen Yang

  17. X-ray imaging and controlled solidification of Al-Cu alloys toward microstructures by design

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

    Clarke, Amy J.; Tourret, Damien; Imhoff, Seth D.; Gibbs, Paul J.; Fezzaa, Kamel; Cooley, Jason C.; Lee, Wah -Keat; Deriy, Alex; Patterson, Brian M.; Papin, Pallas A.; et al

    2015-01-30

    X-ray imaging, which permits the microscopic visualization of metal alloy solidification dynamics, can be coupled with controlled solidification to create microstructures by design. This x-ray image shows a process-derived composite microstructure being made from a eutectic Al-17.1 at.%Cu alloy by successive solidification and remelting steps.

  18. Single mimivirus particles intercepted and imaged with an X-ray laser (CXIDB ID 2)

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

    Seibert, M. Marvin; Ekeberg, Tomas

    2011-02-02

    These are the files used to reconstruct the images in the paper "Single Mimivirus particles intercepted and imaged with an X-ray laser". Besides the diffracted intensities, the Hawk configuration files used for the reconstructions are also provided. The files from CXIDB ID 2 are the pattern and configuration files for the pattern showed in Figure 2b in the paper.

  19. Single mimivirus particles intercepted and imaged with an X-ray laser (CXIDB ID 1)

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

    Seibert, M. Marvin; Ekeberg, Tomas; Maia, Filipe R.N.C.

    2011-02-02

    These are the files used to reconstruct the images in the paper "Single Mimivirus particles intercepted and imaged with an X-ray laser". Besides the diffracted intensities, the Hawk configuration files used for the reconstructions are also provided. The files from CXIDB ID 1 are the pattern and configuration files for the pattern showed in Figure 2a in the paper.

  20. Single mimivirus particles intercepted and imaged with an X-ray laser (CXIDB ID 1)

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

    Seibert, M. Marvin; Ekeberg, Tomas; Maia, Filipe R.N.C.

    These are the files used to reconstruct the images in the paper "Single Mimivirus particles intercepted and imaged with an X-ray laser". Besides the diffracted intensities, the Hawk configuration files used for the reconstructions are also provided. The files from CXIDB ID 1 are the pattern and configuration files for the pattern showed in Figure 2a in the paper.

  1. Volumetric imaging of shark tail hydrodynamics reveals a three-dimensional

    E-Print Network [OSTI]

    Lauder, George V.

    Volumetric imaging of shark tail hydrodynamics reveals a three-dimensional dual-ring vortex wake-dimensional, volumetric imaging technique that allows instantaneous capture of wake flow patterns, to a classic problem analyses, and show that the volumetric approach reveals a different vortex wake not previously

  2. Image-Based Reconstruction of Spatially Varying Materials

    E-Print Network [OSTI]

    Heidrich, Wolfgang

    Image-Based Reconstruction of Spatially Varying Materials Hendrik P. A. Lensch1 Jan Kautz1 Michael material properties is an important step towards photorealistic rendering. Many real-world objects are composed of a number of materials that often show subtle changes even within a single material. Thus

  3. Direct Imaging of Soft-Hard Interfaces Enabled by Graphene

    E-Print Network [OSTI]

    Frenklach, Michael

    Direct Imaging of Soft-Hard Interfaces Enabled by Graphene Zonghoon Lee,*, Ki-Joon Jeon,*, Albert. We show that graphene, a single atomic layer of sp2 -bonded carbon atoms, can be employed capability. Our findings reveal the unique potential of graphene as an ideal support film for atomic

  4. Heterodyne coherent anti-Stokes Raman scattering (CARS) imaging

    E-Print Network [OSTI]

    Potma, Eric Olaf

    Heterodyne coherent anti-Stokes Raman scattering (CARS) imaging Eric O. Potma,* Conor L. Evans with heterodyne co- herent anti-Stokes Raman scattering (CARS) interferometric microscopy. This technique that is linear in the concentration of vibrational modes. We show that heterodyne CARS microscopy permits

  5. Quantitative Imaging of Corrosion in Plates by Eddy Current Methods

    E-Print Network [OSTI]

    Santosa, Fadil

    Quantitative Imaging of Corrosion in Plates by Eddy Current Methods Bruno Luong \\Lambda and Fadil the problem of determining material loss due to cor­ rosion in a plate. Eddy current data are collected on one the relationship between eddy current loop impedance change with the loss profile. In this context, we show

  6. Coronal shock waves observed in images H. S. Hudson

    E-Print Network [OSTI]

    Hudson, Hugh

    . The large-scale coronal shock waves observed from radio type II bursts and from More- ton waves have proven surprisingly difficult to detect in coronal images. I review the evidence for such waves in radio, optical, EUV-scale waves. The discovery of radio type II bursts showed immediately that these waves became shocks

  7. Inferring Motor Programs from Images of Handwritten Digits

    E-Print Network [OSTI]

    Hinton, Geoffrey E.

    Inferring Motor Programs from Images of Handwritten Digits Geoffrey Hinton and Vinod Nair whose stiffnesses are controlled by a motor program. We show how neural networks can be trained to infer the motor programs required to accurately reconstruct the MNIST digits. The inferred motor programs can

  8. 166 Section: Bioinformatics Biological Image Analysis via Matrix

    E-Print Network [OSTI]

    Kumar, Sudhir

    and Mining (2nd Ed.) edited by John Wang,Idea Group,Inc.,Pennsylvania,166-170. #12; Biological Image Analysi of the central challenges in genome research. One popular approach is based on the analysis of microarray gene of genes showing spatial overlaps in their expression patterns is fundamentally important to formulating

  9. Caranx: Scalable Social Image Index Using Phylogenetic Tree of Hashtags

    E-Print Network [OSTI]

    . The vectors are quantized and stored in tree-like data structures for fast search. SIFT- based indexing can an efficient algorithm to build/search the PT, and show that using PT structure can effectively avoid unnecessary NRDC computation. The resulting image index provides more accurate and diversified search results1

  10. Session Papers The Whole Sky Imager -A Year of Progress

    E-Print Network [OSTI]

    Shields, Janet

    minutes between image sets. To date, the Atmospheric Radiation Measurement (ARM) Program has opted to use by the instrument. A picture of the instrument fielded at the Oklahoma Cloud and Radiation Testbed (CART) site the sensor and electronics, the optical dome, and the solar occultor that shades the optics. Figure 2 shows

  11. Keeping Show Pigs Healthy 

    E-Print Network [OSTI]

    Lawhorn, D. Bruce

    2006-10-13

    to 4 weeks later. Approximately 2 weeks after the second erysipelas-APP bacterin is administered, healthy pigs develop an immunity that lasts until about 6 months of age. Sometimes these diseases still occur after vaccination; however, vaccination... sources, mixed on a trailer and subjected to the stress of hauling, injec- tions during this time may only postpone or delay the development of bacterial diseases. Remember: The greater the exposure, the greater the likelihood of disease problems...

  12. Pre-Show Checklist

    Broader source: Energy.gov [DOE]

    Before you leave for your event, you should check that you are prepared and ready to go.  This checklist was designed to remind you of the steps you are required to take before leaving for your event.

  13. Pixel-level Image Fusion Algorithms for Multi-camera Imaging System

    E-Print Network [OSTI]

    Abidi, Mongi A.

    Pixel-level Image Fusion Algorithms for Multi-camera Imaging System A Thesis Presented of image fusion technologies in the multi sensor image fusion system and applications. With specific focus on pixel level image fusion, the process after the image registration is processed, we develop graphic user

  14. Reaction product imaging

    SciTech Connect (OSTI)

    Chandler, D.W. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    Over the past few years the author has investigated the photochemistry of small molecules using the photofragment imaging technique. Bond energies, spectroscopy of radicals, dissociation dynamics and branching ratios are examples of information obtained by this technique. Along with extending the technique to the study of bimolecular reactions, efforts to make the technique as quantitative as possible have been the focus of the research effort. To this end, the author has measured the bond energy of the C-H bond in acetylene, branching ratios in the dissociation of HI, the energetics of CH{sub 3}Br, CD{sub 3}Br, C{sub 2}H{sub 5}Br and C{sub 2}H{sub 5}OBr dissociation, and the alignment of the CD{sub 3} fragment from CD{sub 3}I photolysis. In an effort to extend the technique to bimolecular reactions the author has studied the reaction of H with HI and the isotopic exchange reaction between H and D{sub 2}.

  15. Nuclear medicine imaging system

    DOE Patents [OSTI]

    Bennett, Gerald W. (East Moriches, NY); Brill, A. Bertrand (Shoreham, NY); Bizais, Yves J. C. (Upton, NY); Rowe, R. Wanda (Upton, NY); Zubal, I. George (Upton, NY)

    1986-01-01

    A nuclear medicine imaging system having two large field of view scintillation cameras mounted on a rotatable gantry and being movable diametrically toward or away from each other is disclosed. In addition, each camera may be rotated about an axis perpendicular to the diameter of the gantry. The movement of the cameras allows the system to be used for a variety of studies, including positron annihilation, and conventional single photon emission, as well as static orthogonal dual multi-pinhole tomography. In orthogonal dual multi-pinhole tomography, each camera is fitted with a seven pinhole collimator to provide seven views from slightly different perspectives. By using two cameras at an angle to each other, improved sensitivity and depth resolution is achieved. The computer system and interface acquires and stores a broad range of information in list mode, including patient physiological data, energy data over the full range detected by the cameras, and the camera position. The list mode acquisition permits the study of attenuation as a result of Compton scatter, as well as studies involving the isolation and correlation of energy with a range of physiological conditions.

  16. Image indexing using color correlograms

    DOE Patents [OSTI]

    Huang, Jing (Ossining, NY); Kumar, Shanmugasundaram Ravi (San Jose, CA); Mitra, Mandar (Calcutta, IN); Zhu, Wei-Jing (Ossining, NY)

    2001-01-01

    A color correlogram is a three-dimensional table indexed by color and distance between pixels which expresses how the spatial correlation of color changes with distance in a stored image. The color correlogram may be used to distinguish an image from other images in a database. To create a color correlogram, the colors in the image are quantized into m color values, c.sub.i . . . c.sub.m. Also, the distance values k.epsilon.[d] to be used in the correlogram are determined where [d] is the set of distances between pixels in the image, and where dmax is the maximum distance measurement between pixels in the image. Each entry (i, j, k) in the table is the probability of finding a pixel of color c.sub.i at a selected distance k from a pixel of color c.sub.i. A color autocorrelogram, which is a restricted version of the color correlogram that considers color pairs of the form (i,i) only, may also be used to identify an image.

  17. Imaging algorithms in radio interferometry

    E-Print Network [OSTI]

    R. J. Sault; T. A. Oosterloo

    2007-01-08

    The paper reviews progress in imaging in radio interferometry for the period 1993-1996. Unlike an optical telescope, the basic measurements of a radio interferometer (correlations between antennas) are indirectly related to a sky brightness image. In a real sense, algorithms and computers are the lenses of a radio interferometer. In the last 20 years, whereas interferometer hardware advances have resulted in improvements of a factor of a few, algorithm and computer advances have resulted in orders of magnitude improvement in image quality. Developing these algorithms has been a fruitful and comparatively inexpensive method of improving the performance of existing telescopes, and has made some newer telescopes possible. In this paper, we review recent developments in the algorithms used in the imaging part of the reduction process. What constitutes an `imaging algorithm'? Whereas once there was a steady `forward' progression in the reduction process of editing, calibrating, transforming and, finally, deconvolving, this is no longer true. The introduction of techniques such as self-calibration, and algorithms that go directly from visibilities to final images, have made the dividing lines less clear. Although we briefly consider self-calibration, for the purposes of this paper calibration issues are generally excluded. Most attention will be directed to the steps which form final images from the calibrated visibilities.

  18. Structured representation of images for language generation and image retrieval 

    E-Print Network [OSTI]

    Elliott, Desmond

    2015-06-29

    A photograph typically depicts an aspect of the real world, such as an outdoor landscape, a portrait, or an event. The task of creating abstract digital representations of images has received a great deal of attention ...

  19. Camera system resolution and its influence on digital image correlation

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

    Reu, Phillip L.; Sweatt, William; Miller, Timothy; Fleming, Darryn

    2014-09-21

    Digital image correlation (DIC) uses images from a camera and lens system to make quantitative measurements of the shape, displacement, and strain of test objects. This increasingly popular method has had little research on the influence of the imaging system resolution on the DIC results. This paper investigates the entire imaging system and studies how both the camera and lens resolution influence the DIC results as a function of the system Modulation Transfer Function (MTF). It will show that when making spatial resolution decisions (including speckle size) the resolution limiting component should be considered. A consequence of the loss ofmore »spatial resolution is that the DIC uncertainties will be increased. This is demonstrated using both synthetic and experimental images with varying resolution. The loss of image resolution and DIC accuracy can be compensated for by increasing the subset size, or better, by increasing the speckle size. The speckle-size and spatial resolution are now a function of the lens resolution rather than the more typical assumption of the pixel size. The study will demonstrate the tradeoffs associated with limited lens resolution.« less

  20. Image Storage in Hot Vapors

    E-Print Network [OSTI]

    L. Zhao; T. Wang; Y. Xiao; S. F. Yelin

    2007-10-22

    We theoretically investigate image propagation and storage in hot atomic vapor. A $4f$ system is adopted for imaging and an atomic vapor cell is placed over the transform plane. The Fraunhofer diffraction pattern of an object in the object plane can thus be transformed into atomic Raman coherence according to the idea of ``light storage''. We investigate how the stored diffraction pattern evolves under diffusion. Our result indicates, under appropriate conditions, that an image can be reconstructed with high fidelity. The main reason for this procedure to work is the fact that diffusion of opposite-phase components of the diffraction pattern interfere destructively.

  1. Imaging Lithium Air Electrodes | ornl.gov

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

    Neutron Imaging Reveals Lithium Distribution in Lithium-Air Electrodes Agatha Bardoel - January 01, 2013 Image produced by neutron-computed tomography. The next step in...

  2. Nanoscale Chemical Imaging of a Working Catalyst

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

    Nanoscale Chemical Imaging of a Working Catalyst Nanoscale Chemical Imaging of a Working Catalyst Print Wednesday, 28 January 2009 00:00 The heterogeneous catalysts used in most...

  3. Application of Perona Malik anisotropic diffusion on digital radiographic image

    SciTech Connect (OSTI)

    Halim, Suhaila Abd; Razak, Rohayu Abdul; Ibrahim, Arsmah; Manurung, Yupiter HP

    2014-07-10

    Perona Malik Anisotropic Diffusion (PMAD) is a very useful and efficient denoising technique if the parameters are properly selected. Overestimating the parameters may cause oversmoothed and underestimating it may leave unfiltered noise. This makes the selection of parameters a crucial process. In this paper the PMAD model is solved using a finite difference scheme The discretized model is evaluated using different diffusion coefficient of exponential and quadratic on defective radiographic images in terms of quality and efficiency. In the application of the PMAD model on image data, a set of defective radiographic images of welding is used as input data. Peak Signal to Noise Ratio (PSNR), Structural Similarity Measure (SSIM) and temporal time are used to evaluate the performance of the model. The implementation of the experiment has been carried out using MATLAB R2009a. In terms of quality, results show that the Quadratic Diffusion Coefficient Function (QDCF) provides better results compared with the Exponential Diffusion Coefficient Function (EDCF). In conclusion, the denoising effect using PMAD model based on finite difference scheme shows able to improve image quality by removing noise in the defective radiographic image.

  4. IMAGING THE EPOCH OF REIONIZATION: LIMITATIONS FROM FOREGROUND CONFUSION AND IMAGING ALGORITHMS

    SciTech Connect (OSTI)

    Vedantham, Harish; Udaya Shankar, N.; Subrahmanyan, Ravi

    2012-02-01

    Tomography of redshifted 21 cm transition from neutral hydrogen using Fourier synthesis telescopes is a promising tool to study the Epoch of Reionization (EoR). Limiting the confusion from Galactic and extragalactic foregrounds is critical to the success of these telescopes. The instrumental response or the point-spread function (PSF) of such telescopes is inherently three dimensional with frequency mapping to the line-of-sight (LOS) distance. EoR signals will necessarily have to be detected in data where continuum confusion persists; therefore, it is important that the PSF has acceptable frequency structure so that the residual foreground does not confuse the EoR signature. This paper aims to understand the three-dimensional PSF and foreground contamination in the same framework. We develop a formalism to estimate the foreground contamination along frequency, or equivalently LOS dimension, and establish a relationship between foreground contamination in the image plane and visibility weights on the Fourier plane. We identify two dominant sources of LOS foreground contamination-'PSF contamination' and 'gridding contamination'. We show that PSF contamination is localized in LOS wavenumber space, beyond which there potentially exists an 'EoR window' with negligible foreground contamination where we may focus our efforts to detect EoR. PSF contamination in this window may be substantially reduced by judicious choice of a frequency window function. Gridding and imaging algorithms create additional gridding contamination and we propose a new imaging algorithm using the Chirp Z Transform that significantly reduces this contamination. Finally, we demonstrate the analytical relationships and the merit of the new imaging algorithm for the case of imaging with the Murchison Widefield Array.

  5. Quantum dot/antibody conjugates for in vivo cytometric imaging in mice

    E-Print Network [OSTI]

    Han, Hee-Sun

    Multiplexed, phenotypic, intravital cytometric imaging requires novel fluorophore conjugates that have an appropriate size for long circulation and diffusion and show virtually no nonspecific binding to cells/serum while ...

  6. Imaging of hard- and soft-tissue structure in the oral cavity by optical coherence tomography

    SciTech Connect (OSTI)

    Colston, Bill W.; Everett, Mathew J.; Da Silva, Luiz B. Otis, Linda L. Stroeve, Pieter Nathel, Howard

    1998-06-01

    We have developed a prototype optical coherent tomography (OCT) system for the imaging of hard and soft tissue in the oral cavity. High-resolution images of {ital in vitro} porcine periodontal tissues have been obtained with this system. The images clearly show the enamel{endash}cementum and the gingiva{endash}tooth interfaces, indicating OCT is a potentially useful technique for diagnosis of periodontal diseases. To our knowledge, this is the first application of OCT for imaging biologic hard tissue. {copyright} 1998 Optical Society of America

  7. Three Dimensional Speckle Imaging Employing a Frequency-Locked Tunable Diode Laser

    SciTech Connect (OSTI)

    Cannon, Bret D.; Bernacki, Bruce E.; Schiffern, John T.; Mendoza, Albert

    2015-09-01

    We describe a high accuracy frequency stepping method for a tunable diode laser to improve a three dimensional (3D) imaging approach based upon interferometric speckle imaging. The approach, modeled after Takeda, exploits tuning an illumination laser in frequency as speckle interferograms of the object (specklegrams) are acquired at each frequency in a Michelson interferometer. The resulting 3D hypercube of specklegrams encode spatial information in the x-y plane of each image with laser tuning arrayed along its z-axis. We present laboratory data of before and after results showing enhanced 3D imaging resulting from precise laser frequency control.

  8. Image credit: Dreamstime Technology for

    E-Print Network [OSTI]

    through development of superconducting magnet technology. Without that research today's high- resolutionImage credit: Dreamstime Technology for research saves lives Technology developed to advance STFC in particle physics technology not only supported important experiments at CERN but pioneered early

  9. Quantum ghost imaging through turbulence

    E-Print Network [OSTI]

    Dixon, P. Ben

    We investigate the effect of turbulence on quantum ghost imaging. We use entangled photons and demonstrate that for a specific experimental configuration the effect of turbulence can be greatly diminished. By decoupling ...

  10. Lensless Imaging of Magnetic Nanostructures

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

    28 March 2012 00:00 Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying...

  11. Motion Estimation from Disparity Images

    E-Print Network [OSTI]

    Demirdjian, D.

    2001-05-07

    A new method for 3D rigid motion estimation from stereo is proposed in this paper. The appealing feature of this method is that it directly uses the disparity images obtained from stereo matching. We assume that the stereo ...

  12. Methods for functional brain imaging

    E-Print Network [OSTI]

    Witzel, Thomas, Ph. D. Massachusetts Institute of Technology

    2011-01-01

    Magnetic resonance imaging (MRI) has demonstrated the potential for non-invasive mapping of structure and function (fMRI) in the human brain. In this thesis, we propose a series of methodological developments towards ...

  13. High speed imaging television system

    DOE Patents [OSTI]

    Wilkinson, William O. (Silver Spring, MD); Rabenhorst, David W. (Silver Spring, MD)

    1984-01-01

    A television system for observing an event which provides a composite video output comprising the serially interlaced images the system is greater than the time resolution of any of the individual cameras.

  14. Imaging Liquids Using Microfluidic Cells

    SciTech Connect (OSTI)

    Yu, Xiao-Ying; Liu, Bingwen; Yang, Li

    2013-05-10

    Chemistry occurring in the liquid and liquid surface is important in many applications. Chemical imaging of liquids using vacuum based analytical techniques is challenging due to the difficulty in working with liquids with high volatility. Recent development in microfluidics enabled and increased our capabilities to study liquid in situ using surface sensitive techniques such as electron microscopy and spectroscopy. Due to its small size, low cost, and flexibility in design, liquid cells based on microfluidics have been increasingly used in studying and imaging complex phenomena involving liquids. This paper presents a review of microfluidic cells that were developed to adapt to electron microscopes and various spectrometers for in situ chemical analysis and imaging of liquids. The following topics will be covered including cell designs, fabrication techniques, unique technical features for vacuum compatible cells, and imaging with electron microscopy and spectroscopy. Challenges are summarized and recommendations for future development priority are proposed.

  15. Imaging atoms in 3-D

    ScienceCinema (OSTI)

    Ercius, Peter

    2014-06-27

    Berkeley Lab's Peter Ercius discusses "Imaging atoms in 3-D" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas

  16. Imaging atoms in 3-D

    SciTech Connect (OSTI)

    Ercius, Peter

    2013-10-31

    Berkeley Lab's Peter Ercius discusses "Imaging atoms in 3-D" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas

  17. Thomas Jefferson: image and ideology 

    E-Print Network [OSTI]

    Wilson, Gaye N. S. B.

    2012-11-30

    This thesis explores the public image of Thomas Jefferson as recorded in his major life portraits. It consults the traditions that surrounded eighteenth-century portraiture and the history of the portrait as a means of ...

  18. Computational time-resolved imaging

    E-Print Network [OSTI]

    Kirmani, Ghulam A. (Ghulam Ahmed)

    2015-01-01

    Classical photography uses steady-state illumination and light sensing with focusing optics to capture scene reflectivity as images; temporal variations of the light field are not exploited. This thesis explores the use ...

  19. Radiopharmaceuticals for imaging the heart

    DOE Patents [OSTI]

    Green, M.A.; Tsang, B.W.

    1994-06-28

    Radiopharmaceuticals for imaging myocardial tissues are prepared by forming lipophilic, cationic complexes of radioactive metal ions with metal chelating ligands comprising the Schiff base adducts of triamines and tetraamines with optionally substituted salicylaldehydes. The lipophilic, cationic, radioactive complexes of the invention exhibit high uptake and retention in myocardial tissues. Preferred gallium-68(III) complexes in accordance with this invention can be used to image the heart using positron emission tomography. 6 figures.

  20. Radiopharmaceuticals for imaging the heart

    DOE Patents [OSTI]

    Green, Mark A. (West Lafayette, IN); Tsang, Brenda W. (Lafayette, IN)

    1994-01-01

    Radiopharmaceuticals for imaging myocardial tissues are prepared by forming lipophilic, cationic complexes of radioactive metal ions with metal chelating ligands comprising the Schiff base adducts of triamines and tetraamines with optionally substituted salicylaldehydes. The lipophilic, cationic, radioactive complexes of the invention exhibit high uptake and retention in myocardial tissues. Preferred gallium-68(III) complexes in accordance with this invention can be used to image the heart using positron emission tomography.

  1. Range determination for scannerless imaging

    DOE Patents [OSTI]

    Muguira, Maritza Rosa (Albuquerque, NM); Sackos, John Theodore (Albuquerque, NM); Bradley, Bart Davis (Albuquerque, NM); Nellums, Robert (Albuquerque, NM)

    2000-01-01

    A new method of operating a scannerless range imaging system (e.g., a scannerless laser radar) has been developed. This method is designed to compensate for nonlinear effects which appear in many real-world components. The system operates by determining the phase shift of the laser modulation, which is a physical quantity related physically to the path length between the laser source and the detector, for each pixel of an image.

  2. 15/01/2015 20:50Economic games don't show altruism | University of Oxford Page 1 of 3http://www.ox.ac.uk/news/science-blog/economic-games-dont-show-altruism

    E-Print Network [OSTI]

    West, Stuart

    .ac.uk/news/science-blog/economic-games-dont-show-altruism Charvy Narain 15 Jan 2015 Economic games don't show altruism OXFORD SCIENCE BLOG (//WWW.OX.AC.UK/NEWS/SCIENCE-BLOG) Economic 'games (http what these results are likely to mean for the field. OxSciBlog: What do these economic games involve

  3. A_ Scior!,ce Servi-$5 Feittura. ? WY THE FEATHER? ?

    E-Print Network [OSTI]

    autumn $8 not disputed' Occur at lrequent i n t e r v a l s over tho North A t l a n t i c throughout the cold montha~from September t o March, and occasionally euch n disturbance coincides with the equinox

  4. Designing liquid repellent surfaces for fabrics, feathers and fog

    E-Print Network [OSTI]

    Chhatre, Shreerang S. (Shreerang Sharad)

    2013-01-01

    Omniphobicity refers to a property of surfaces which are not wetted by water, oils, alcohols and other low surface tension liquids. Robust omniphobic surfaces can be applied in many areas including fabrics with chemical / ...

  5. Primary feather molt of juvenile mourning doves in Texas 

    E-Print Network [OSTI]

    Morrow, Michael Eugene

    1983-01-01

    The mourning dove breeds throughout the 48 contiguous states of the United States, portions of the Candadian provinces, the Greater Antilles, and Mexico (Keeler 1977). In the United States, hunting of mourning doves during 1980 was permitted in 32 of the 48... year than the combined total of all other migratory game birds (Keeler 1977). Management of mourning doves has been focused primarily on regulating hunting to achieve proper harvest (Dolton 1977). Recently a gradual decline in the breeding...

  6. HOST MICROBE INTERACTIONS Microorganisms Associated with Feathers of Barn Swallows

    E-Print Network [OSTI]

    Mousseau, Timothy A.

    -Kowalke-Strasse 17, 10315 Berlin, Germany Microb Ecol (2010) 60:373­380 DOI 10.1007/s00248-010-9716-4 #12 radiation [34]. The meltdown and subsequent explosion of one of the reactors at Chernobyl Nuclear Power Plant on 26 April 1986 released >80 PBq of radioactive materials affecting 200,000 km2 area in Europe

  7. Feather weights : rapid redeployable structures for interim use

    E-Print Network [OSTI]

    Willis, Robin (Robin Christian)

    2011-01-01

    This thesis examines vacant urban parcels that are either unviable for development or stalled as a result of the economic crisis, and asks: How is it possible to generate both economic and urban value on these sites until ...

  8. A Scionce Servicg Fezture-7 VHY THE FEATHER 1

    E-Print Network [OSTI]

    i n a small degree. been succsssful i n modifying t h e i r weather, wind-broaks they havs locelly t o make it tvarmor and the buildings to loTer the wind vslocity i n general. at times t o hurricane decreased tho strength of t h o wind, lessoned avapo- In another way, Frairio farEOrS have By planting long

  9. Archaeopteryx Feathers and Bone Chemistry Fully Revealed via Synchrotron

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

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

  10. For the Birds: The Magic of Color in Feathers

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFES OctoberEvanServices »FirstCurrent ScienceNationalFor the Birds:

  11. Noise Reduction in CMOS Image Sensors for High Quality Imaging: The Autocorrelation Function Filter on Burst Image Sequences

    E-Print Network [OSTI]

    Nielsen, Frank

    Noise Reduction in CMOS Image Sensors for High Quality Imaging: The Autocorrelation Function Filter-hiro@waseda.jp Abstract We propose a new method for image noise detection and reduction in complementary metal oxide semi- conductor (CMOS) image sensors inspired from audio noise cancelling techniques. Our algorithm is based

  12. High speed imager test station

    DOE Patents [OSTI]

    Yates, G.J.; Albright, K.L.; Turko, B.T.

    1995-11-14

    A test station enables the performance of a solid state imager (herein called a focal plane array or FPA) to be determined at high image frame rates. A programmable waveform generator is adapted to generate clock pulses at determinable rates for clock light-induced charges from a FPA. The FPA is mounted on an imager header board for placing the imager in operable proximity to level shifters for receiving the clock pulses and outputting pulses effective to clock charge from the pixels forming the FPA. Each of the clock level shifters is driven by leading and trailing edge portions of the clock pulses to reduce power dissipation in the FPA. Analog circuits receive output charge pulses clocked from the FPA pixels. The analog circuits condition the charge pulses to cancel noise in the pulses and to determine and hold a peak value of the charge for digitizing. A high speed digitizer receives the peak signal value and outputs a digital representation of each one of the charge pulses. A video system then displays an image associated with the digital representation of the output charge pulses clocked from the FPA. In one embodiment, the FPA image is formatted to a standard video format for display on conventional video equipment. 12 figs.

  13. High speed imager test station

    DOE Patents [OSTI]

    Yates, George J. (Santa Fe, NM); Albright, Kevin L. (Los Alamos, NM); Turko, Bojan T. (Moraga, CA)

    1995-01-01

    A test station enables the performance of a solid state imager (herein called a focal plane array or FPA) to be determined at high image frame rates. A programmable waveform generator is adapted to generate clock pulses at determinable rates for clock light-induced charges from a FPA. The FPA is mounted on an imager header board for placing the imager in operable proximity to level shifters for receiving the clock pulses and outputting pulses effective to clock charge from the pixels forming the FPA. Each of the clock level shifters is driven by leading and trailing edge portions of the clock pulses to reduce power dissipation in the FPA. Analog circuits receive output charge pulses clocked from the FPA pixels. The analog circuits condition the charge pulses to cancel noise in the pulses and to determine and hold a peak value of the charge for digitizing. A high speed digitizer receives the peak signal value and outputs a digital representation of each one of the charge pulses. A video system then displays an image associated with the digital representation of the output charge pulses clocked from the FPA. In one embodiment, the FPA image is formatted to a standard video format for display on conventional video equipment.

  14. Detection and Imaging of He_2 Molecules in Superfluid Helium

    E-Print Network [OSTI]

    W. G. Rellergert; S. B. Cahn; A. Garvan; J. C. Hanson; W. H. Lippincott; J. A. Nikkel; D. N. McKinsey

    2007-12-18

    We present data that show a cycling transition can be used to detect and image metastable He$_2$ triplet molecules in superfluid helium. We demonstrate that limitations on the cycling efficiency due to the vibrational structure of the molecule can be mitigated by the use of repumping lasers. Images of the molecules obtained using the method are also shown. This technique gives rise to a new kind of ionizing radiation detector. The use of He$_2$ triplet molecules as tracer particles in the superfluid promises to be a powerful tool for visualization of both quantum and classical turbulence in liquid helium.

  15. Perona Malik anisotropic diffusion model using Peaceman Rachford scheme on digital radiographic image

    SciTech Connect (OSTI)

    Halim, Suhaila Abd; Razak, Rohayu Abd; Ibrahim, Arsmah; Manurung, Yupiter HP

    2014-06-19

    In image processing, it is important to remove noise without affecting the image structure as well as preserving all the edges. Perona Malik Anisotropic Diffusion (PMAD) is a PDE-based model which is suitable for image denoising and edge detection problems. In this paper, the Peaceman Rachford scheme is applied on PMAD to remove unwanted noise as the scheme is efficient and unconditionally stable. The capability of the scheme to remove noise is evaluated on several digital radiography weld defect images computed using MATLAB R2009a. Experimental results obtained show that the Peaceman Rachford scheme improves the image quality substantially well based on the Peak Signal to Noise Ratio (PSNR). The Peaceman Rachford scheme used in solving the PMAD model successfully removes unwanted noise in digital radiographic image.

  16. THERMOACOUSTIC TOMOGRAPHY ARISING IN BRAIN IMAGING ...

    E-Print Network [OSTI]

    2011-02-21

    THERMOACOUSTIC TOMOGRAPHY ARISING IN BRAIN IMAGING. PLAMEN STEFANOV AND GUNTHER UHLMANN. ABSTRACT. We study the mathematical ...

  17. Image Based Gisting in CLIR Mark Sanderson

    E-Print Network [OSTI]

    Sanderson, Mark

    from the Rosch [1] paper. These search terms were entered into the Google Image search engine in order the ability of subjects to derive the search term that might have been used to return a set of images from on subjects' abilities in this respect. Search terms were defined and images found using an online image

  18. Conclusions This chapter reviews the objectives of the thesis, shows how the work presented in this thesis meets

    E-Print Network [OSTI]

    Gibson, J. Paul

    Chapter 8 Conclusions This chapter reviews the objectives of the thesis, shows how the work presented in this thesis meets these objectives and makes suggestions for future work. 8.1 Review of Thesis Objectives The main objective of the thesis is to show that combining object oriented and formal methods

  19. Reduced conditioned fear response in mice that lack Dlx1 and show subtype-specific loss of interneurons

    E-Print Network [OSTI]

    Sur, Mriganka

    Reduced conditioned fear response in mice that lack Dlx1 and show subtype-specific loss a battery of behavioral assays on the Dlx1 mutant mice, including zero maze, open field, locomotor activity suspension tests. These mice also showed deficits in contextual and trace fear conditioning, and possibly

  20. Fits to data The figures in this Appendix show the fits to the photometry for the mod-

    E-Print Network [OSTI]

    Whiting, Matthew

    Appendix D Fits to data The figures in this Appendix show the fits to the photometry for the mod to Section 4.4). The photometry is shown in the centre-left panel. The magnitudes from Table B.1 have been, against wavelength on the same log scale as the photometry. The bottom-left shows the optical spectrum

  1. Map Shows Groundwater Decline Slowed LINCOLN, Neb. --Groundwater levels in Nebraska slowed their rate of decline and actually

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Map Shows Groundwater Decline Slowed LINCOLN, Neb. -- Groundwater levels in Nebraska slowed director of the UNL Water Center, said that the groundwater level maps produced annually by SNR, or stable groundwater levels, with oranges and reds indicating declines and greens and blues showing

  2. Seismic velocity estimation and time to depth conversion of time-migrated images Maria Cameron, University of California at Berkeley, Sergey Fomel, University of Texas at Austin, and

    E-Print Network [OSTI]

    Cameron, Maria Kourkina

    the two can be significant. INTRODUCTION Time-domain seismic imaging is a robust and efficient process rouSeismic velocity estimation and time to depth conversion of time-migrated images Maria Cameron migrated seismic images and show that the Dix velocities estimated from time migration velocities

  3. Interpretation of HRTEM images by image simulation: An introduction to theory and practice

    SciTech Connect (OSTI)

    O`Keefe, M.A.

    1994-08-01

    This tutorial describes the use of image simulation as an aid to interpretation of high-resolution transmission electron microscope images. Topics include some image processing as well as image simulation. Image processing is the manipulation of experimental images in order to extract some desired information. Image simulation is the generation of a computed or simulated image from a model structure. It requires a detailed knowledge of the process of image formation in the high-resolution transmission electron microscope. This tutorial concentrates on image simulation, with examples of image processing appearing only as required as illustrations. Because this is an introduction, the theory of image simulation is described, but not explored in depth. The practice of image simulation is covered in sufficient detail to enable the student to understand the functions of the various steps in the computations, and the parameters necessary for their evaluation.

  4. 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).

  5. Characterisation of an oxy-coal flame through digital imaging

    SciTech Connect (OSTI)

    Smart, John; Riley, Gerry [RWE npower plc, Windmill Hill Business Park, Whitehill Way, Swindon SN5 6PB (United Kingdom); Lu, Gang; Yan, Yong [Instrumentation, Control and Embedded Systems Research Group, School of Engineering and Digital Arts, University of Kent, Canterbury, Kent CT2 7NT (United Kingdom)

    2010-06-15

    This paper presents investigations into the impact of oxy-fuel combustion on flame characteristics through the application of digital imaging and image processing techniques. The characteristic parameters of the flame are derived from flame images that are captured using a vision-based flame monitoring system. Experiments were carried out on a 0.5 MW{sub th} coal combustion test facility. Different flue gas recycle ratios and furnace oxygen levels were created for two different coals. The characteristics of the flame and the correlation between the measured flame parameters and corresponding combustion conditions are described and discussed. The results show that the flame temperature decreases with the recycle ratio for both test coals, suggesting that the flame temperature is effectively controlled by the flue gas recycle ratio. The presence of high levels of CO{sub 2} at high flue gas recycle ratios may result in delayed combustion and thus has a detrimental effect on the flame stability. (author)

  6. Method for removing RFI from SAR images

    DOE Patents [OSTI]

    Doerry, Armin W.

    2003-08-19

    A method of removing RFI from a SAR by comparing two SAR images on a pixel by pixel basis and selecting the pixel with the lower magnitude to form a composite image. One SAR image is the conventional image produced by the SAR. The other image is created from phase-history data which has been filtered to have the frequency bands containing the RFI removed.

  7. A Model of Image Representation and Indexing in Image Database Systems \\Lambda

    E-Print Network [OSTI]

    Krovi, Venkat

    A Model of Image Representation and Indexing in Image Database Systems \\Lambda G. Sheikholeslami Buffalo, NY 14260 Abstract Image database systems need to be built to support effective and efficient­oriented image decomposition structures to be used as a fundamental data model for representing image content

  8. Interpretation of electron holographic phase images and defocused bright-field images of nanocarbon field emitters

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    a corresponding out-of-focus image recorded from a similar wire [2]. These images cannot be interpreted usingInterpretation of electron holographic phase images and defocused bright-field images of nanocarbon field, image simulation Electron holography is well suited to the investigation of electric and magnetic

  9. TU-F-18A-02: Iterative Image-Domain Decomposition for Dual-Energy CT

    SciTech Connect (OSTI)

    Niu, T; Dong, X; Petrongolo, M; Zhu, L

    2014-06-15

    Purpose: Dual energy CT (DECT) imaging plays an important role in advanced imaging applications due to its material decomposition capability. Direct decomposition via matrix inversion suffers from significant degradation of image signal-to-noise ratios, which reduces clinical value. Existing de-noising algorithms achieve suboptimal performance since they suppress image noise either before or after the decomposition and do not fully explore the noise statistical properties of the decomposition process. We propose an iterative image-domain decomposition method for noise suppression in DECT, using the full variance-covariance matrix of the decomposed images. Methods: The proposed algorithm is formulated in the form of least-square estimation with smoothness regularization. It includes the inverse of the estimated variance-covariance matrix of the decomposed images as the penalty weight in the least-square term. Performance is evaluated using an evaluation phantom (Catphan 600) and an anthropomorphic head phantom. Results are compared to those generated using direct matrix inversion with no noise suppression, a de-noising method applied on the decomposed images, and an existing algorithm with similar formulation but with an edge-preserving regularization term. Results: On the Catphan phantom, our method retains the same spatial resolution as the CT images before decomposition while reducing the noise standard deviation of decomposed images by over 98%. The other methods either degrade spatial resolution or achieve less low-contrast detectability. Also, our method yields lower electron density measurement error than direct matrix inversion and reduces error variation by over 97%. On the head phantom, it reduces the noise standard deviation of decomposed images by over 97% without blurring the sinus structures. Conclusion: We propose an iterative image-domain decomposition method for DECT. The method combines noise suppression and material decomposition into an iterative process and achieves both goals simultaneously. The proposed algorithm shows superior performance on noise suppression with high image spatial resolution and low-contrast detectability. This work is supported by a Varian MRA grant.

  10. SU-E-I-39: Molecular Image Guided Cancer Stem Cells Therapy

    SciTech Connect (OSTI)

    Abdollahi, H

    2014-06-01

    Purpose: Cancer stem cells resistance to radiation is a problematic issue that has caused a big fail in cancer treatment. Methods: As a primary work, molecular imaging can indicate the main mechanisms of radiation resistance of cancer stem cells. By developing and commissioning new probes and nanomolecules and biomarkers, radiation scientist will able to identify the essential pathways of radiation resistance of cancer stem cells. As the second solution, molecular imaging is a best way to find biological target volume and delineate cancer stem cell tissues. In the other hand, by molecular imaging techniques one can image the treatment response in tumor and also in normal tissue. In this issue, the response of cancer stem cells to radiation during therapy course can be imaged, also the main mechanisms of radiation resistance and finding the best radiation modifiers (sensitizers) can be achieved by molecular imaging modalities. In adaptive radiotherapy the molecular imaging plays a vital role to have higher tumor control probability by delivering high radiation doses to cancer stem cells in any time of treatment. The outcome of a feasible treatment is dependent to high cancer stem cells response to radiation and removing all of which, so a good imaging modality can show this issue and preventing of tumor recurrence and metastasis. Results: Our results are dependent to use of molecular imaging as a new modality in the clinic. We propose molecular imaging as a new radiobiological technique to solve radiation therapy problems due to cancer stem cells. Conclusion: Molecular imaging guided cancer stem cell diagnosis and therapy is a new approach in the field of cancer treatment. This new radiobiological imaging technique should be developed in all clinics as a feasible tool that is more biological than physical imaging.

  11. STAR Images: Image gallery from the Solenoidal Tracker at RHIC

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

    The primary physics task of STAR is to study the formation and characteristics of the quark-gluon plasma (QGP), a state of matter believed to exist at sufficiently high energy densities. STAR consists of several types of detectors, each specializing in detecting certain types of particles or characterizing their motion. These detectors allow final statements to be made about the collision. The gallery of STAR images makes available a small collection of event-generated images from Gold-Beam experiments, a simulation of TCP Drift, and a library of STAR instrument and construction photos.

  12. Image Change Detection via Ensemble Learning

    SciTech Connect (OSTI)

    Martin, Benjamin W [ORNL] [ORNL; Vatsavai, Raju [ORNL] [ORNL

    2013-01-01

    The concept of geographic change detection is relevant in many areas. Changes in geography can reveal much information about a particular location. For example, analysis of changes in geography can identify regions of population growth, change in land use, and potential environmental disturbance. A common way to perform change detection is to use a simple method such as differencing to detect regions of change. Though these techniques are simple, often the application of these techniques is very limited. Recently, use of machine learning methods such as neural networks for change detection has been explored with great success. In this work, we explore the use of ensemble learning methodologies for detecting changes in bitemporal synthetic aperture radar (SAR) images. Ensemble learning uses a collection of weak machine learning classifiers to create a stronger classifier which has higher accuracy than the individual classifiers in the ensemble. The strength of the ensemble lies in the fact that the individual classifiers in the ensemble create a mixture of experts in which the final classification made by the ensemble classifier is calculated from the outputs of the individual classifiers. Our methodology leverages this aspect of ensemble learning by training collections of weak decision tree based classifiers to identify regions of change in SAR images collected of a region in the Staten Island, New York area during Hurricane Sandy. Preliminary studies show that the ensemble method has approximately 11.5% higher change detection accuracy than an individual classifier.

  13. Picosecond Optical MCPI-Based Imagers

    SciTech Connect (OSTI)

    None

    2012-10-01

    We present the desired performance specifications for an advanced optical imager, which borrows practical concepts in high-speed microchannel plate (MCP) intensified x-ray stripline imagers and time-dilation techniques. With a four-fold speed improvement in state-of-the-art high-voltage impulse drivers, and novel atomic-layer deposition MCPs, we tender a design capable of 5 ps optical gating without the use of magnetic field confinement of the photoelectrons. We analyze the electron dispersion effects in the MCP and their implications for gating pulses shorter than the MCP transit time. We present a wideband design printed-circuit version of the Series Transmission Line Transformer (STLT) that makes use of 50-ohm coaxial 1.0 mm (110 GHz) and 1.85 mm (65 GHz) hermetically sealed vacuum feedthroughs and low-dispersion Teflon/Kapton circuit materials without the use of any vias. The STLT matches impedance at all interfaces with a 16:1 impedance (4:1 voltage) reduction, and delivers a dispersion-limited sharp impulse to the MCP strip. A comparison of microstrip design calculations is given, showing variances between method of moments, empirical codes, and finite element methods for broad, low-impedance traces. Prototype performance measurements are forthcoming.

  14. Radar Imaging of Spheres in 3D using MUSIC

    SciTech Connect (OSTI)

    Chambers, D H; Berryman, J G

    2003-01-21

    We have shown that multiple spheres can be imaged by linear and planar EM arrays using only one component of polarization. The imaging approach involves calculating the SVD of the scattering response matrix, selecting a subset of singular values that represents noise, and evaluating the MUSIC functional. The noise threshold applied to the spectrum of singular values for optimal performance is typically around 1%. The resulting signal subspace includes more than one singular value per sphere. The presence of reflections from the ground improves height localization, even for a linear array parallel to the ground. However, the interference between direct and reflected energy modulates the field, creating periodic nulls that can obscure targets in typical images. These nulls are largely eliminated by normalizing the MUSIC functional with the broadside beam pattern of the array. The resulting images show excellent localization for 1 and 2 spheres. The performance for the 3 sphere configurations are complicated by shadowing effects and the greater range of the 3rd sphere in case 2. Two of the three spheres are easily located by MUSIC but the third is difficult to distinguish from other local maxima of the complex imaging functional. Improvement is seen when the linear array is replace with a planar array, which increases the effective aperture height. Further analysis of the singular values and their relationship to modes of scattering from the spheres, as well as better ways to exploit polarization, should improve performance. Work along these lines is currently being pursued by the authors.

  15. Extreme luminosity imaging conical spectrograph

    SciTech Connect (OSTI)

    Pikuz, S. A.; Shelkovenko, T. A.; Mitchell, M. D.; Chandler, K. M.; Douglass, J. D.; McBride, R. D.; Jackson, D. P.; Hammer, D. A.

    2006-10-15

    A new configuration for a two-dimensional (2D) imaging x-ray spectrograph based on a conically bent crystal is introduced: extreme luminosity imaging conical spectrograph (ELICS). The ELICS configuration has important advantages over spectrographs that are based on cylindrically and spherically bent crystals. The main advantages are that a wide variety of large-aperture crystals can be used, and any desired magnification in the spatial direction (the direction orthogonal to spectral dispersion) can be achieved by the use of different experimental arrangements. The ELICS can be set up so that the detector plane is almost perpendicular to the incident rays, a good configuration for time-resolved spectroscopy. ELICSs with mica crystals of 45x90 mm{sup 2} aperture have been successfully used for imaging on the XP and COBRA pulsed power generators, yielding spectra with spatial resolution in 2D of Z pinches and X pinches.

  16. Miniature hybrid optical imaging lens

    DOE Patents [OSTI]

    Sitter, D.N. Jr.; Simpson, M.L.

    1997-10-21

    A miniature lens system that corrects for imaging and chromatic aberrations is disclosed, the lens system being fabricated from primarily commercially-available components. A first element at the input to a lens housing is an aperture stop. A second optical element is a refractive element with a diffractive element closely coupled to, or formed a part of, the rear surface of the refractive element. Spaced closely to the diffractive element is a baffle to limit the area of the image, and this is closely followed by a second refractive lens element to provide the final correction. The image, corrected for aberrations exits the last lens element to impinge upon a detector plane were is positioned any desired detector array. The diffractive element is fabricated according to an equation that includes, as variables, the design wavelength, the index of refraction and the radius from an optical axis of the lens system components. 2 figs.

  17. Miniature hybrid optical imaging lens

    DOE Patents [OSTI]

    Sitter, Jr., David N. (Knoxville, TN); Simpson, Marc L. (Knoxville, TN)

    1997-01-01

    A miniature lens system that corrects for imaging and chromatic aberrations, the lens system being fabricated from primarily commercially-available components. A first element at the input to a lens housing is an aperture stop. A second optical element is a refractive element with a diffractive element closely coupled to, or formed a part of, the rear surface of the refractive element. Spaced closely to the diffractive element is a baffle to limit the area of the image, and this is closely followed by a second refractive lens element to provide the final correction. The image, corrected for aberrations exits the last lens element to impinge upon a detector plane were is positioned any desired detector array. The diffractive element is fabricated according to an equation that includes, as variables, the design wavelength, the index of refraction and the radius from an optical axis of the lens system components.

  18. Sci—Fri AM: Mountain — 02: A comparison of dose reduction methods on image quality for cone beam CT

    SciTech Connect (OSTI)

    Webb, R; Buckley, LA

    2014-08-15

    Modern radiotherapy uses highly conformai dose distributions and therefore relies on daily image guidance for accurate patient positioning. Kilovoltage cone beam CT is one technique that is routinely used for patient set-up and results in a high dose to the patient relative to planar imaging techniques. This study uses an Elekta Synergy linac equipped with XVI cone beam CT to investigate the impact of various imaging parameters on dose and image quality. Dose and image quality are assessed as functions of x-ray tube voltage, tube current and the number of projections in the scan. In each case, the dose measurements confirm that as each parameter increases the dose increases. The assessment of high contrast resolution shows little dependence on changes to the image technique. However, low contrast visibility suggests a trade off between dose and image quality. Particularly for changes in tube potential, the dose increases much faster as a function of voltage than the corresponding increase in low contrast image quality. This suggests using moderate values of the peak tube voltage (100 – 120 kVp) since higher values result in significant dose increases with little gain in image quality. Measurements also indicate that increasing tube current achieves the greatest degree of improvement in the low contrast visibility. The results of this study highlight the need to establish careful imaging protocols to limit dose to the patient and to limit changes to the imaging parameters to those cases where there is a clear clinical requirement for improved image quality.

  19. "Es Siempre Preferible la Carpa a la Pulquería": The Construction of Poverty in the Music of the Carpas Shows in Mexico City, 1890-1930

    E-Print Network [OSTI]

    Bieletto-Bueno, M Natalia

    2015-01-01

    de salón en Colombia y Venezuela vista a través de lasde salón en Colombia y Venezuela, vista a través de lasan undesirable image. Venezuela, the political implications

  20. Electronic imaging system and technique

    DOE Patents [OSTI]

    Bolstad, J.O.

    1984-06-12

    A method and system for viewing objects obscurred by intense plasmas or flames (such as a welding arc) includes a pulsed light source to illuminate the object, the peak brightness of the light reflected from the object being greater than the brightness of the intense plasma or flame; an electronic image sensor for detecting a pulsed image of the illuminated object, the sensor being operated as a high-speed shutter; and electronic means for synchronizing the shutter operation with the pulsed light source.

  1. Electronic imaging system and technique

    DOE Patents [OSTI]

    Bolstad, Jon O. (Idaho Falls, ID)

    1987-01-01

    A method and system for viewing objects obscurred by intense plasmas or flames (such as a welding arc) includes a pulsed light source to illuminate the object, the peak brightness of the light reflected from the object being greater than the brightness of the intense plasma or flame; an electronic image sensor for detecting a pulsed image of the illuminated object, the sensor being operated as a high-speed shutter; and electronic means for synchronizing the shutter operation with the pulsed light source.

  2. NEUTRON IMAGING, RADIOGRAPHY AND TOMOGRAPHY.

    SciTech Connect (OSTI)

    SMITH,G.C.

    2002-03-01

    Neutrons are an invaluable probe in a wide range of scientific, medical and commercial endeavors. Many of these applications require the recording of an image of the neutron signal, either in one-dimension or in two-dimensions. We summarize the reactions of neutrons with the most important elements that are used for their detection. A description is then given of the major techniques used in neutron imaging, with emphasis on the detection media and position readout principle. Important characteristics such as position resolution, linearity, counting rate capability and sensitivity to gamma-background are discussed. Finally, the application of a subset of these instruments in radiology and tomography is described.

  3. Multispectral imaging method and apparatus

    DOE Patents [OSTI]

    Sandison, D.R.; Platzbecker, M.R.; Vargo, T.D.; Lockhart, R.R.; Descour, M.R.; Richards-Kortum, R.

    1999-07-06

    A multispectral imaging method and apparatus are described which are adapted for use in determining material properties, especially properties characteristic of abnormal non-dermal cells. A target is illuminated with a narrow band light beam. The target expresses light in response to the excitation. The expressed light is collected and the target's response at specific response wavelengths to specific excitation wavelengths is measured. From the measured multispectral response the target's properties can be determined. A sealed, remote probe and robust components can be used for cervical imaging. 5 figs.

  4. Gamma-ray Imaging Methods

    SciTech Connect (OSTI)

    Vetter, K; Mihailescu, L; Nelson, K; Valentine, J; Wright, D

    2006-10-05

    In this document we discuss specific implementations for gamma-ray imaging instruments including the principle of operation and describe systems which have been built and demonstrated as well as systems currently under development. There are several fundamentally different technologies each with specific operational requirements and performance trade offs. We provide an overview of the different gamma-ray imaging techniques and briefly discuss challenges and limitations associated with each modality (in the appendix we give detailed descriptions of specific implementations for many of these technologies). In Section 3 we summarize the performance and operational aspects in tabular form as an aid for comparing technologies and mapping technologies to potential applications.

  5. X-ray Imaging Workshop

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos Alamos verifies largest single goldWindX-Ray ImagingInImaging and

  6. Image change detection systems, methods, and articles of manufacture

    DOE Patents [OSTI]

    Jones, James L. (Idaho Falls, ID); Lassahn, Gordon D. (Idaho Falls, ID); Lancaster, Gregory D. (Idaho Falls, ID)

    2010-01-05

    Aspects of the invention relate to image change detection systems, methods, and articles of manufacture. According to one aspect, a method of identifying differences between a plurality of images is described. The method includes loading a source image and a target image into memory of a computer, constructing source and target edge images from the source and target images to enable processing of multiband images, displaying the source and target images on a display device of the computer, aligning the source and target edge images, switching displaying of the source image and the target image on the display device, to enable identification of differences between the source image and the target image.

  7. Multi-channel medical imaging system

    DOE Patents [OSTI]

    Frangioni, John V

    2013-12-31

    A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remain in the subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may provide an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide used to capture images. The system may be configured for use in open surgical procedures by providing an operating area that is closed to ambient light. The systems described herein provide two or more diagnostic imaging channels for capture of multiple, concurrent diagnostic images and may be used where a visible light image may be usefully supplemented by two or more images that are independently marked for functional interest.

  8. Buried object detection in GPR images

    DOE Patents [OSTI]

    Paglieroni, David W; Chambers, David H; Bond, Steven W; Beer, W. Reginald

    2014-04-29

    A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes the return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.

  9. Upright cone beam CT imaging using the onboard imager

    SciTech Connect (OSTI)

    Fave, Xenia Martin, Rachael; Yang, Jinzhong; Balter, Peter; Court, Laurence; Carvalho, Luis; Pan, Tinsu

    2014-06-15

    Purpose: Many patients could benefit from being treated in an upright position. The objectives of this study were to determine whether cone beam computed tomography (CBCT) could be used to acquire upright images for treatment planning and to demonstrate whether reconstruction of upright images maintained accurate geometry and Hounsfield units (HUs). Methods: A TrueBeam linac was programmed in developer mode to take upright CBCT images. The gantry head was positioned at 0°, and the couch was rotated to 270°. The x-ray source and detector arms were extended to their lateral positions. The x-ray source and gantry remained stationary as fluoroscopic projections were taken and the couch was rotated from 270° to 90°. The x-ray tube current was normalized to deposit the same dose (measured using a calibrated Farmer ion chamber) as that received during a clinical helical CT scan to the center of a cylindrical, polyethylene phantom. To extend the field of view, two couch rotation scans were taken with the detector offset 15 cm superiorly and then 15 cm inferiorly. The images from these two scans were stitched together before reconstruction. Upright reconstructions were compared to reconstructions from simulation CT scans of the same phantoms. Two methods were investigated for correcting the HUs, including direct calibration and mapping the values from a simulation CT. Results: Overall geometry, spatial linearity, and high contrast resolution were maintained in upright reconstructions. Some artifacts were created and HU accuracy was compromised; however, these limitations could be removed by mapping the HUs from a simulation CT to the upright reconstruction for treatment planning. Conclusions: The feasibility of using the TrueBeam linac to take upright CBCT images was demonstrated. This technique is straightforward to implement and could be of enormous benefit to patients with thoracic tumors or those who find a supine position difficult to endure.

  10. Hadamard multimode optical imaging transceiver

    DOE Patents [OSTI]

    Cooke, Bradly J; Guenther, David C; Tiee, Joe J; Kellum, Mervyn J; Olivas, Nicholas L; Weisse-Bernstein, Nina R; Judd, Stephen L; Braun, Thomas R

    2012-10-30

    Disclosed is a method and system for simultaneously acquiring and producing results for multiple image modes using a common sensor without optical filtering, scanning, or other moving parts. The system and method utilize the Walsh-Hadamard correlation detection process (e.g., functions/matrix) to provide an all-binary structure that permits seamless bridging between analog and digital domains. An embodiment may capture an incoming optical signal at an optical aperture, convert the optical signal to an electrical signal, pass the electrical signal through a Low-Noise Amplifier (LNA) to create an LNA signal, pass the LNA signal through one or more correlators where each correlator has a corresponding Walsh-Hadamard (WH) binary basis function, calculate a correlation output coefficient for each correlator as a function of the corresponding WH binary basis function in accordance with Walsh-Hadamard mathematical principles, digitize each of the correlation output coefficient by passing each correlation output coefficient through an Analog-to-Digital Converter (ADC), and performing image mode processing on the digitized correlation output coefficients as desired to produce one or more image modes. Some, but not all, potential image modes include: multi-channel access, temporal, range, three-dimensional, and synthetic aperture.

  11. Image Compression by Back Propagation

    E-Print Network [OSTI]

    Cottrell, Garrison W.

    CHAPTER 9 Image Compression by Back Propagation: An Example of Extensional Programming* GARRISON W the case with the computatiolls associated with basic cognitive pro- cesses such as vision and audition techniques. The technique we employ is known as back propagation. developed by l1umelhart, Hinton

  12. Aspherical lens design and imaging

    E-Print Network [OSTI]

    Cristian E. Gutierrez; Ahmad Sabra

    2015-07-29

    We design freeform lenses refracting an arbitrarily given incident field into a given fixed direction. In the near field case, we study the existence of lenses refracting a given bright object into a predefined image. We also analyze the existence of systems of mirrors that solve the near field and the far field problems for reflection.

  13. Thermo Tracer Infrared Thermal Imager

    E-Print Network [OSTI]

    Walker, D. Greg

    -range area G Environment monitoring Volcano, ecology, vegetation, global warming, pollution G R&D Evaluation is a fixed installation type infrared thermal imaging camera to monitor important facilities Production line monitoring Quality anomalies in production processes G Facility monitoring Anomalies

  14. Imaging Science Israel J. Vaughn

    E-Print Network [OSTI]

    Lega, Joceline

    Imaging Science Israel J. Vaughn Advanced Sensing Laboratory College of Optical Sciences University.D. in Optical Sciences Vaughn,Tyo (ASL ­ OSC ­ UA) August 6, 2013 2 / 9 #12;Some personal info B.S. in Math M.S. in Math Ph.D. in Optical Sciences Vaughn,Tyo (ASL ­ OSC ­ UA) August 6, 2013 2 / 9 #12;Some personal info

  15. Medical Image Segmentation Xiaolei Huang

    E-Print Network [OSTI]

    Huang, Xiaolei

    . The National Electrical Manufacturers Association (NEMA) holds the copyright to the DICOM standard. Medical (CAT), Magnetic Resonance Imaging (MRI), Ultrasound, and X-Ray, in standard DICOM formats are often and Communications in Medicine (DICOM) standard is created as a cooperative international standard for communication

  16. Humor in Castellanos's El eterno femenino: The Fractured Female Image

    E-Print Network [OSTI]

    McNab, Pamela J.

    2000-04-01

    twilight years, when her belated recovery of her self-image reveals a deeply bitter woman. "Luna de miel" focuses on the transition between adolescence and adulthood: the marriage day. The custom of showing blood as evidence of the new wife's loss..., le quita el maquillaje, la deja hecha un desastre" (41). Thus, in both "Luna de miel" and "La anunciación," women perpetuate female misery by adhering to the stereotypes. The newlywed Lupita's hypocrisy incites Juan's clichéd macho response...

  17. SLAC Large Detector (SLD) Image and Event Display Collections

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

    Perl, Joseph; Cowan, Ray; Johnson, Tony

    The SLD makes use of the unique capabilities of the Stanford Linear Collider (SLC) to perform studies of polarized Z particles produced in collisions between electrons and positrons. The SLD Event Display Collection shows computer generated pictures of a number of Z particle decays as reconstructed by the SLD detector. More than 90 images, each in several formats, captured from 1991 - 1996 events, are archived here. There are also figures and data plots available.

  18. Do blue-ice moraines in the Heritage Range show the West Antarctic ice sheet survived the last interglacial?

    E-Print Network [OSTI]

    Do blue-ice moraines in the Heritage Range show the West Antarctic ice sheet survived the last in revised form 10 January 2011 Accepted 28 January 2011 Available online xxxx Keywords: Blue-ice moraine cosmogenic isotope data on blue-ice moraines in the Heritage Range, West Antarctica. The age of the moraines

  19. Figure 1. ComTouch Concept drawing showing a handheld sleeve that fits onto the back of a mobile phone

    E-Print Network [OSTI]

    Jacob, Robert J.K.

    Touch, is a vibrotactile device sleeve that fits over the back of a mobile phone. The basic concept is a handheld deviceFigure 1. ComTouch Concept drawing showing a handheld sleeve that fits onto the back of a mobile

  20. Fits to data The gures in this Appendix show the ts to the photometry for the mod-

    E-Print Network [OSTI]

    Whiting, Matthew

    Appendix D Fits to data The #12;gures in this Appendix show the #12;ts to the photometry (calculated according to Section 4.4). The photometry is shown in the centre-left panel. The magnitudes from). The polarisation is plotted on a linear scale, against wavelength on the same log scale as the photometry

  1. 1. Batch reaction experiment Cu, Ni and Zn show increased concentrations with the addition of CO2,

    E-Print Network [OSTI]

    capacity by pressure relief, or from CO2-Enhanced Oil Recovery. Currently, produced waters from oil and gas sandstone shows that total concen- trations of the eight metals of interest are low ( 30 g/g), with leached%) are also low. Figure 2. Batch experiment metal concentrations through time for Captain, Cormorant

  2. New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters

    Broader source: Energy.gov [DOE]

    The Energy Department today released a new report showing progress for the U.S. offshore wind energy market in 2012, including the completion of two commercial lease auctions for federal Wind Energy Areas and 11 commercial-scale U.S. projects repre

  3. Home More on the Story Past Shows Blog As Seen On Discussion Board Who's Who Contact Ken Suslick (photo

    E-Print Network [OSTI]

    Suslick, Kenneth S.

    Se Home More on the Story Past Shows Blog As Seen On Discussion Board Who's Who Contact 1 Ken Tonight | Chicago Tonight - More on the Story 5/31/2011http://blogs.wttw.com/moreonthestory/2011/05/25/a

  4. ERK1-Deficient Mice Show Normal T Cell Effector Function and Are Highly Susceptible to Experimental Autoimmune

    E-Print Network [OSTI]

    ERK1-Deficient Mice Show Normal T Cell Effector Function and Are Highly Susceptible to Experimental cascades, including the ERK1/2 (p44/p42) pathway. It has been suggested that ERKs integrate TCR signal of ERKs for the effector functions of peripheral mature T cells and, specifically, for T cell

  5. MOST light-curve analysis of the gamma Dor pulsator HR 8799, showing resonances and amplitude variations

    E-Print Network [OSTI]

    Sódor, Á; De Cat, P; Bognár, Zs; Wright, D J; Marois, C; Walker, G A H; Matthews, J M; Kallinger, T; Rowe, J F; Kuschnig, R; Guenther, D B; Moffat, A F J; Rucinski, S M; Sasselov, D; Weiss, W W

    2014-01-01

    Context: The central star of the HR 8799 system is a gamma Doradus-type pulsator. The system harbours four planetary-mass companions detected by direct imaging, and is a good solar system analogue. The masses of the companions are not known accurately, because the estimation depends strongly on the age of the system, which is also not known with sufficient accuracy. Asteroseismic studies of the star might help to better constrain the age of HR 8799. We organized an extensive photometric and multi-site spectroscopic observing campaign for studying the pulsations of the central star. Aims: The aim of the present study is to investigate the pulsation properties of HR 8799 in detail via the ultra-precise 47-d-long nearly continuous photometry obtained with the MOST space telescope, and to find as many independent pulsation modes as possible, which is the prerequisite of an asteroseismic age determination. Methods: We carried out Fourier analysis of the wide-band photometric time series. Results: We find that reso...

  6. Deep Sky Astronomical Image Database Project at NERSC

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

    Deep Sky Astronomical Image Database Deep Sky Astronomical Image Database Key Challenges: Develop, store, analyze, and make available an astronomical image database of...

  7. Magic of Numbers in Networks of Wireless Image Sensors

    E-Print Network [OSTI]

    Rahimi, Mohammed; Ahmadian, Shaun; Zats, David; Laufer, Rafael; Estrin, D

    2006-01-01

    are solved on the battery- operated image sensor nodes andwith wireless battery-operated image sensors, we havedepicts a network of battery- operated image sensors placed

  8. Search Log Analysis of the ARTstor Cultural Heritage Image Database

    E-Print Network [OSTI]

    Lowe, Heather Ann

    2013-01-01

    Patterns in a Digital Image Database. Information RetrievalCultural Heritage Image Database A thesis submitted inCultural Heritage Image Database by Heather Ann Lowe Master

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

    E-Print Network [OSTI]

    Martins, Charles

    2010-01-01

    retinal images. International Conference on Image Processing,retinal angiograms of diabetic patients. In International Conference on Image Analysis and Processing (

  10. Quantitative comparison of fuel spray images obtained using ultrafast coherent and incoherent double-pulsed illumination

    E-Print Network [OSTI]

    Purwar, Harsh; Idlahcen, Saïd; Rozé, Claude; Blaisot, Jean-Bernard; Ménard, Thibault

    2015-01-01

    We present a quantitative comparison between the high-pressure fuel spray images obtained experimentally using classical imaging with coherent and incoherent ultrafast illuminations recorded using a compatible CMOS camera. The ultrafast, incoherent illumination source was extracted from the supercontinuum generated by tightly focusing the femtosecond laser pulses in water. The average velocity maps computed using time-correlated image-pairs and spray edge complexity computed using the average curvature scale space maps are compared for the spray images obtained with the two illumination techniques and also for the numerically simulated spray using the coupled volume of fluid and level set method for interface tracking (direct numerical simulation or DNS). The spray images obtained with supercontinuum-derived, incoherent, ultrafast illumination are clearer, since the artifacts arising due to laser speckles and multiple diffraction effects are largely reduced and show a better correlation with the DNS results.

  11. Adaptive polarimetric image representation for contrast optimization of a polarized beacon through fog

    E-Print Network [OSTI]

    Panigrahi, Swapnesh; Alouini, Mehdi

    2015-01-01

    We present a contrast-maximizing optimal linear representation of polarimetric images obtained from a snapshot polarimetric camera for enhanced vision of a polarized light source in obscured weather conditions (fog, haze, cloud) over long distances (above 1 km). We quantitatively compare the gain in contrast obtained by different linear representations of the experimental polarimetric images taken during rapidly varying foggy conditions. It is shown that the adaptive image representation that depends on the correlation in background noise fluctuations in the two polarimetric images provides an optimal contrast enhancement over all weather conditions as opposed to a simple difference image which underperforms during low visibility conditions. Finally, we derive the analytic expression of the gain in contrast obtained with this optimal representation and show that the experimental results are in agreement with the assumed correlated Gaussian noise model.

  12. IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 17, NO. 12, DECEMBER 2008 2465 Detection and Segmentation of Concealed

    E-Print Network [OSTI]

    Popovic, Zoya

    by measuring the radiometric temperatures of different objects on a human sub- ject. The goal of this work, segmentation, terahertz imaging. I. INTRODUCTION AT room temperature, the peak of black body radiation. In fact, we show in our experiments that state of the art image segmentation algorithms fail

  13. SIP : a smart digital image processing library

    E-Print Network [OSTI]

    Zhou, Mengyao

    2005-01-01

    The Smart Image Processing (SIP) library was developed to provide automated real-time digital image processing functions on camera phones with integer microprocessors. Many of the functions are not available on commercial ...

  14. Gradient characterization in magnetic resonance imaging

    E-Print Network [OSTI]

    Cheng, Joseph Yitan

    2007-01-01

    Special magnetic resonance (MR) scans, such as spiral imaging and echo-planar imaging, require speed and gradient accuracy while putting high demands on the MR gradient system that may cause gradient distortion. Additionally, ...

  15. A Visual Category Filter Google Images , Zisserman

    E-Print Network [OSTI]

    Zisserman, Andrew

    image returned Google's image search a number object categories including bottles, camels, cars, horses a contaminated training a minimal amount supervi­ sion. therefore method Fergus [10], extending it allow

  16. Integrated computational system for portable retinal imaging

    E-Print Network [OSTI]

    Boggess, Jason (Jason Robert)

    2012-01-01

    This thesis introduces a system to improve image quality obtained from a low-light CMOS camera-specifically designed to image the surface of the retina. The retinal tissue, as well as having various diseases of its own, ...

  17. Image sense disambiguation : a multimodal approach

    E-Print Network [OSTI]

    Saenko, Ekaterina, 1976-

    2009-01-01

    If a picture is worth a thousand words, can a thousand words be worth a training image? Most successful object recognition algorithms require manually annotated images of objects to be collected for training. The amount ...

  18. Data visualization of biological microscopy image analyses

    E-Print Network [OSTI]

    Scelfo, Tony (Tony W.)

    2006-01-01

    The Open Microscopy Environment (OME) provides biologists with a framework to store, analyze and manipulate large sets of image data. Current microscopes are capable of generating large numbers of images and when coupled ...

  19. Perceptually inspired image estimation and enhancement

    E-Print Network [OSTI]

    Li, Yuanzhen, Ph. D. Massachusetts Institute of Technology

    2009-01-01

    In this thesis, we present three image estimation and enhancement algorithms inspired by human vision. In the first part of the thesis, we propose an algorithm for mapping one image to another based on the statistics of a ...

  20. Information efficiency in hyperspectral imaging systems

    E-Print Network [OSTI]

    Reichenbach, Stephen E.

    Information efficiency in hyperspectral imaging systems Stephen E. Reichenbach University develop a method for assessing the in- formation density and efficiency of hyperspectral imaging systems width can efficiently gather information about a scene by allocating bandwidth among the bands according

  1. BIOMEDICAL MATHEMATICS: Promising Directions in Imaging,

    E-Print Network [OSTI]

    Censor, Yair

    BIOMEDICAL MATHEMATICS: Promising Directions in Imaging, Therapy Planning, and Inverse Problems #12;BIOMEDICAL MATHEMATICS: Promising Directions in Imaging, Therapy Planning, and Inverse Problems Yair Censor, Ming Jiang, Ge Wang Editors The Huangguoshu International Interdisciplinary Conference on Biomedical

  2. Automatic caption generation for news images 

    E-Print Network [OSTI]

    Feng, Yansong

    2011-06-30

    This thesis is concerned with the task of automatically generating captions for images, which is important for many image-related applications. Automatic description generation for video frames would help security ...

  3. Robust phase sensitive inversion recovery imaging 

    E-Print Network [OSTI]

    Garach, Ravindra Mahendrakumar

    2005-11-01

    Imaging. (August 2005) Garach, Ravindra Mahendrakumar, B.E., Gujarat University Chair of Advisory Committee: Dr. Jim Ji Inversion Recovery (IR) is a powerful tool for contrast manipulation in Mag- netic Resonance Imaging (MRI). IR can provide strong...

  4. Diesel combustion and emissions formation using multiple 2-D imaging diagnostics

    SciTech Connect (OSTI)

    Dec, J.E. [Sandia National Labs., Livermore, CA (United States)

    1997-12-31

    Understanding how emissions are formed during diesel combustion is central to developing new engines that can comply with increasingly stringent emission standards while maintaining or improving performance levels. Laser-based planar imaging diagnostics are uniquely capable of providing the temporally and spatially resolved information required for this understanding. Using an optically accessible research engine, a variety of two-dimensional (2-D) imaging diagnostics have been applied to investigators of direct-injection (DI) diesel combustion and emissions formation. These optical measurements have included the following laser-sheet imaging data: Mie scattering to determine liquid-phase fuel distributions, Rayleigh scattering for quantitative vapor-phase-fuel/air mixture images, laser induced incandescence (LII) for relative soot concentrations, simultaneous LII and Rayleigh scattering for relative soot particle-size distributions, planar laser-induced fluorescence (PLIF) to obtain early PAH (polyaromatic hydrocarbon) distributions, PLIF images of the OH radical that show the diffusion flame structure, and PLIF images of the NO radical showing the onset of NO{sub x} production. In addition, natural-emission chemiluminescence images were obtained to investigate autoignition. The experimental setup is described, and the image data showing the most relevant results are presented. Then the conceptual model of diesel combustion is summarized in a series of idealized schematics depicting the temporal and spatial evolution of a reacting diesel fuel jet during the time period investigated. Finally, recent PLIF images of the NO distribution are presented and shown to support the timing and location of NO formation hypothesized from the conceptual model.

  5. Photogrammetry & Machine Vision 1. Image sensors

    E-Print Network [OSTI]

    Giger, Christine

    Photogrammetry & Machine Vision 1. Image sensors (a) Fundamentals of image sensors (b) CCD image'Apuzzo Photogrammetry and Machine Vision - 3 Point cloud processing, surface generation, texturing (b) Camera, noise) 2N. D'Apuzzo Photogrammetry and Machine Vision - 3 Point cloud processing, surface generation

  6. Low Light Image Enhancement via Sparse Representations

    E-Print Network [OSTI]

    Tsakalides, Panagiotis

    Low Light Image Enhancement via Sparse Representations Konstantina Fotiadou , Grigorios,greg,tsakalid}@ics.forth.gr Abstract. Enhancing the quality of low light images is a critical pro- cessing function both from images captured under low illumination conditions based on the mathematical framework of Sparse

  7. Frontiers in Chemical Imaging Seminar Series

    E-Print Network [OSTI]

    Frontiers in Chemical Imaging Seminar Series Advancing Methods for Labeling, Staining, Imaging of Neurosciences University of California, San Diego Abstract A grand goal in neuroscience research will highlight development and application of new contrasting methods and imaging tools that have allowed us

  8. Chemical Imaging Initiative Delivering New Capabilities for

    E-Print Network [OSTI]

    or with light-source capabilities to image materials of importance to the nation's energy and environmentalChemical Imaging Initiative Delivering New Capabilities for In Situ, Molecular-Scale Imaging A complete, precise and realistic view of chemical, materials and biochemical processes and an understanding

  9. Imaging passive seismic data Brad Artman

    E-Print Network [OSTI]

    Imaging passive seismic data Brad Artman brad@sep.stanford.edu Submitted to Geophysics March 2005, CA 94305-2215 ABSTRACT Passive seismic imaging is the process of synthesizing the wealth to produce a subsurface image. For passively acquired data, migration is even more important than for active

  10. Fundamentals of 3D Laplacian Image pyramids

    E-Print Network [OSTI]

    Nielsen, Frank

    is efficient for sampling as it removes high-frequency components. (sample at fewer positions.) Gaussian kernel: Application to blending Multiband blending. Blending two overlapping images using their pyramids Compute) with the rightmost half of L (I2). Reconstruct blended images from the Laplacian pyramid L r. #12;Laplacian image

  11. McCausland Center For Brain Imaging

    E-Print Network [OSTI]

    Almor, Amit

    .mricro.com). he Siemens 3-Tesla Magnetic Resonance Imag- ing system at the McCausland Center for Brain Imaging the Palmetto Richland Memorial Hospi- tal. The Siemens 3-Tesla magnetic resonance imag- ing system is fitted brain remains one of the great scientific challenges of our generation. With approximately 100 billion

  12. Image Analysis Model-Based Methods

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Model-Based Methods Comparing and Evaluating Models Summary Further Reading Data Collection ScientificImage Analysis Model-Based Methods Comparing and Evaluating Models Summary Further Reading Fully Low-Count Image Analysis #12;Image Analysis Model-Based Methods Comparing and Evaluating Models

  13. Institute for Functional Imaging of Materials

    E-Print Network [OSTI]

    Weston, Ken

    Institute for Functional Imaging of Materials (IFIM) Guiding the design of materials tailored Kalman filters New methods Bigdata Imaging Electronic Structure Molecular Dynamics Multiscale Ab Initio dynamics electrons to materials and architectures #12;3 Imaging: The big picture ORNL has unique strengths

  14. Fast neutron imaging device and method

    DOE Patents [OSTI]

    Popov, Vladimir; Degtiarenko, Pavel; Musatov, Igor V.

    2014-02-11

    A fast neutron imaging apparatus and method of constructing fast neutron radiography images, the apparatus including a neutron source and a detector that provides event-by-event acquisition of position and energy deposition, and optionally timing and pulse shape for each individual neutron event detected by the detector. The method for constructing fast neutron radiography images utilizes the apparatus of the invention.

  15. Locating Secret Messages in Images Ian Davidson

    E-Print Network [OSTI]

    Davidson, Ian

    Locating Secret Messages in Images Ian Davidson Computer Science, SUNY Albany 1400 Washington in innocuous media such as images, while steganalysis is the field of detecting these secret messages contributing the most to the energy calculations of an image are deemed outliers. Typically, of the top third

  16. Automatic Detection and Classification of Sunspot Images

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Automatic Detection and Classification of Sunspot Images Thomas C. M. Lee tlee with Alex Young and the SaFeDe Solar Imaging Group JSM 2007 ­ p. 1/2 #12;Outline Title: Automatic Detection and Classification of Sunspot Images JSM 2007 ­ p. 2/2 #12;Outline Title: Automatic Detection and Classification

  17. POSTDOCTORAL POSITION Biomedical Image Computing Group

    E-Print Network [OSTI]

    Salvaggio, Carl

    POSTDOCTORAL POSITION Biomedical Image Computing Group University of Washington, Seattle, WA. Departments of Pediatrics, Bioengineering and Radiology www.depts.washington.edu/bicg The Biomedical Image to acquire, process and analyze biomedical imaging data of the developing brain. The postdoctoral researcher

  18. Photographing paintings by image fusion Gloria Haro

    E-Print Network [OSTI]

    Photographing paintings by image fusion Gloria Haro Dept. of Information and Communications a quality photograph of a painting by multi-image fusion methods. The problem is particularly challenging in most photographs of paintings. A fully automatic image processing chain is described that, starting

  19. Errors in Quantitative Image Analysis due to

    E-Print Network [OSTI]

    Rubin, Daniel L.

    ; Massachusetts General Hospital, Boston, MA Abstract PURPOSE: To evaluate the ability of various software (SW different SW tools to measure compartment-specific region-of-interest intensity. RESULTS: Images generated for by the majority of tested quantitative image analysis SW tools. Incorrect image scaling leads to intensity

  20. Image-Guided Fracture David Mould

    E-Print Network [OSTI]

    Mould, David

    Image-Guided Fracture David Mould Department of Computer Science University of Saskatchewan Abstract We present an image filter that transforms an input line drawing into an image of a fractured of an uncracked texture. Key words: Non-photorealistic rendering, fracture, tex- ture synthesis 1 Introduction Non

  1. Digital image library development in academic environment

    E-Print Network [OSTI]

    Corran, Ruth

    1 Digital image library development in academic environment: designing and testing usability@aup.fr Keywords: Digital image library, usability, student projects, participatory design Abstract Case study Purpose By reporting the experience gained in the development of a digital image library in academic

  2. Transgenic rats overexpressing the human MrgX3 gene show cataracts and an abnormal skin phenotype

    SciTech Connect (OSTI)

    Kaisho, Yoshihiko . E-mail: Kaisho_Yoshihiko@takeda.co.jp; Watanabe, Takuya; Nakata, Mitsugu; Yano, Takashi; Yasuhara, Yoshitaka; Shimakawa, Kozo; Mori, Ikuo; Sakura, Yasufumi; Terao, Yasuko; Matsui, Hideki; Taketomi, Shigehisa

    2005-05-13

    The human MrgX3 gene, belonging to the mrgs/SNSRs (mass related genes/sensory neuron specific receptors) family, was overexpressed in transgenic rats using the actin promoter. Two animal lines showed cataracts with liquification/degeneration and swelling of the lens fiber cells. The transient epidermal desquamation was observed in line with higher gene expression. Histopathology of the transgenic rats showed acanthosis and focal parakeratosis. In the epidermis, there was an increase in cellular keratin 14, keratin 10, and loricrin, as well as PGP 9.5 in innervating nerve fibers. These phenotypes accompanied an increase in the number of proliferating cells. These results suggest that overexpression of the human MrgX3 gene causes a disturbance of the normal cell-differentiation process.

  3. NATURAL IMAGE UTILITY ASSESSMENT USING IMAGE CONTOURS David M. Rouse and Sheila S. Hemami

    E-Print Network [OSTI]

    Hemami, Sheila S.

    NATURAL IMAGE UTILITY ASSESSMENT USING IMAGE CONTOURS David M. Rouse and Sheila S. Hemami Visual to a reference. For the utility assessment task, observers evaluate the usefulness of a natural image cannot generally predict the perceived utility of a natural image. This paper examines variations

  4. Diffuse optical imaging of brain activation: approaches to optimizing image sensitivity, resolution, and accuracy

    E-Print Network [OSTI]

    Boas, David

    Diffuse optical imaging of brain activation: approaches to optimizing image sensitivity, resolution States Available online 11 September 2004 Near-infrared spectroscopy (NIRS) and diffuse optical imaging currently being made and issues to consider for improving optical image quality. These include the optimal

  5. Bayesian fusion of multi-band image fusion Bayesian fusion of multi-band image fusion

    E-Print Network [OSTI]

    Tourneret, Jean-Yves

    Bayesian fusion of multi-band image fusion Bayesian fusion of multi-band image fusion Beyond for Latent Variables", Feb. 2-4 2015 1 / 64 #12;Bayesian fusion of multi-band image fusion Context Multi School "Search for Latent Variables", Feb. 2-4 2015 2 / 64 #12;Bayesian fusion of multi-band image fusion

  6. Abstract Title: Image Informatics Tools for the Analysis of Retinal Images

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    Barbara, Santa Barbara, CA. Keywords: 682 retinal detachment, 541 image processing, 543 imagingAbstract Title: Image Informatics Tools for the Analysis of Retinal Images Presentation Start/End Time: Wednesday, May 03, 2006, 11:15 AM - 1:00 PM Location: Hall B/C Reviewing Code: 289 retinal

  7. Dynamic imaging with electron microscopy

    ScienceCinema (OSTI)

    Campbell, Geoffrey; McKeown, Joe; Santala, Melissa

    2014-05-30

    Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

  8. PHOTOACOUSTIC NON-DESTRUCTIVE EVALUATION AND IMAGING OF CARIES IN DENTAL SAMPLES

    SciTech Connect (OSTI)

    Li, T.; Dewhurst, R. J. [Photon Science Institute, University of Manchester, Alan Turing Building, Oxford Road, Manchester, M13 9PL (United Kingdom)

    2010-02-22

    Dental caries is a disease wherein bacterial processes damage hard tooth structure. Traditional dental radiography has its limitations for detecting early stage caries. In this study, a photoacoustic (PA) imaging system with the near-infrared light source has been applied to postmortem dental samples to obtain 2-D and 3-D images. Imaging results showed that the PA technique can be used to image human teeth caries. For non-destructive photoacoustic evaluation and imaging, the induced temperature and pressure rises within biotissues should not cause physical damage to the tissue. For example, temperature rises above 5 deg. C within live human teeth will cause pulpal necrosis. Therefore, several simulations based on the thermoelastic effect have been applied to predict temperature and pressure fields within samples. Predicted temperature levels are below corresponding safety limits, but care is required to avoid nonlinear absorption phenomena. Furthermore, PA imaging results from the phantom provide evidence for high sensitivity, which shows the imaging potential of the PA technique for detecting early stage disease.

  9. Image compression/decompression based on mathematical transform, reduction/expansion, and image sharpening

    DOE Patents [OSTI]

    Fu, C.Y.; Petrich, L.I.

    1997-12-30

    An image represented in a first image array of pixels is first decimated in two dimensions before being compressed by a predefined compression algorithm such as JPEG. Another possible predefined compression algorithm can involve a wavelet technique. The compressed, reduced image is then transmitted over the limited bandwidth transmission medium, and the transmitted image is decompressed using an algorithm which is an inverse of the predefined compression algorithm (such as reverse JPEG). The decompressed, reduced image is then interpolated back to its original array size. Edges (contours) in the image are then sharpened to enhance the perceptual quality of the reconstructed image. Specific sharpening techniques are described. 22 figs.

  10. Pancreas imaging by computed tomography after endoscopic retrograde pancreatography. [Dogs; patients

    SciTech Connect (OSTI)

    Frick, M.P.; O'Leary, J.F.; Salomonowitz, E.; Stoltenberg, E.; Hutton, S.; Gedgaudas, E.

    1984-01-01

    A method using CT after endoscopic retrograde pancreatography (CT-ERP) is described for pancreatic imaging. When using an ERP technique in the canine model comparable to that used in humans, small amounts of contrast material in peripheral pancreatic radicles resulted in enhancement of the pancreas on CT scans. Nine patients were also studied by CT-ERP images. The main pancreatic duct was seen on delayed images. In cases of chronic pancreatitis (n = 2), pancreatic opacification was patchy and heterogeneous. There was no contrast-material enhancement in areas of pancreatic carcimomas (n = 2). CT-ERP showed the true extent of carcinoma better than ERP alone.

  11. Radiation-tolerant imaging device

    DOE Patents [OSTI]

    Colella, N.J.; Kimbrough, J.R.

    1996-11-19

    A barrier at a uniform depth for an entire wafer is used to produce imaging devices less susceptible to noise pulses produced by the passage of ionizing radiation. The barrier prevents charge created in the bulk silicon of a CCD detector or a semiconductor logic or memory device from entering the collection volume of each pixel in the imaging device. The charge barrier is a physical barrier, a potential barrier, or a combination of both. The physical barrier is formed by an SiO{sub 2} insulator. The potential barrier is formed by increasing the concentration of majority carriers (holes) to combine with the electron`s generated by the ionizing radiation. A manufacturer of CCD imaging devices can produce radiation-tolerant devices by merely changing the wafer type fed into his process stream from a standard wafer to one possessing a barrier beneath its surface, thus introducing a very small added cost to his production cost. An effective barrier type is an SiO{sub 2} layer. 7 figs.

  12. Radiation-tolerant imaging device

    DOE Patents [OSTI]

    Colella, Nicholas J. (Livermore, CA); Kimbrough, Joseph R. (Pleasanton, CA)

    1996-01-01

    A barrier at a uniform depth for an entire wafer is used to produce imaging devices less susceptible to noise pulses produced by the passage of ionizing radiation. The barrier prevents charge created in the bulk silicon of a CCD detector or a semiconductor logic or memory device from entering the collection volume of each pixel in the imaging device. The charge barrier is a physical barrier, a potential barrier, or a combination of both. The physical barrier is formed by an SiO.sub.2 insulator. The potential barrier is formed by increasing the concentration of majority carriers (holes) to combine with the electron's generated by the ionizing radiation. A manufacturer of CCD imaging devices can produce radiation-tolerant devices by merely changing the wafer type fed into his process stream from a standard wafer to one possessing a barrier beneath its surface, thus introducing a very small added cost to his production cost. An effective barrier type is an SiO.sub.2 layer.

  13. Simulation of High-Resolution Magnetic Resonance Images on the IBM Blue Gene/L Supercomputer Using SIMRI

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

    Baum, K. G.; Menezes, G.; Helguera, M.

    2011-01-01

    Medical imaging system simulators are tools that provide a means to evaluate system architecture and create artificial image sets that are appropriate for specific applications. We have modified SIMRI, a Bloch equation-based magnetic resonance image simulator, in order to successfully generate high-resolution 3D MR images of the Montreal brain phantom using Blue Gene/L systems. Results show that redistribution of the workload allows an anatomically accurate 256 3 voxel spin-echo simulation in less than 5 hours when executed on an 8192-node partition of a Blue Gene/L system.

  14. X-ray tests of a two-dimensional stigmatic imaging scheme with variable magnifications

    SciTech Connect (OSTI)

    Lu, J.; Bitter, M.; Hill, K. W.; Delgado-Aparicio, L. F.; Efthimion, P. C.; Pablant, N. A.; Beiersdorfer, P.; Caughey, T. A.; Brunner, J.

    2014-11-15

    A two-dimensional stigmatic x-ray imaging scheme, consisting of two spherically bent crystals, one concave and one convex, was recently proposed [M. Bitter et al., Rev. Sci. Instrum. 83, 10E527 (2012)]. The Bragg angles and the radii of curvature of the two crystals of this imaging scheme are matched to eliminate the astigmatism and to satisfy the Bragg condition across both crystal surfaces for a given x-ray energy. In this paper, we consider more general configurations of this imaging scheme, which allow us to vary the magnification for a given pair of crystals and x-ray energy. The stigmatic imaging scheme has been validated for the first time by imaging x-rays generated by a micro-focus x-ray source with source size of 8.4 ?m validated by knife-edge measurements. Results are presented from imaging the tungsten L?1 emission at 8.3976 keV, using a convex Si-422 crystal and a concave Si-533 crystal with 2d-spacings of 2.21707 Å and 1.65635 Å and radii of curvature of 500 ± 1 mm and 823 ± 1 mm, respectively, showing a spatial resolution of 54.9 ?m. This imaging scheme is expected to be of interest for the two-dimensional imaging of laser produced plasmas.

  15. Magneto-optical imaging of thin magnetic films using spins in diamond

    E-Print Network [OSTI]

    David A. Simpson; Jean-Philippe Tetienne; Julia McCoey; Kumaravelu Ganesan; Liam T. Hall; Steven Petrou; Robert E. Scholten; Lloyd C. L. Hollenberg

    2015-08-10

    Imaging the fields of magnetic materials provides crucial insight into the physical and chemical processes surrounding magnetism, and has been a key ingredient in the spectacular development of magnetic data storage. Existing approaches using the magneto-optic Kerr effect (MOKE), x-ray and electron microscopy have limitations that constrain further development, and there is increasing demand for imaging and characterisation of magnetic phenomena in real time with high spatial resolution. In this work, we show how the magneto-optical response of an array of negatively-charged nitrogen-vacancy spins in diamond can be used to image and map the sub-micron stray magnetic field patterns from thin ferromagnetic films. Using optically detected magnetic resonance, we demonstrate wide-field magnetic imaging over 100x100 {\\mu}m^2 with a diffraction-limited spatial resolution of 440 nm at video frame rates, under ambient conditions. We demonstrate a novel all-optical spin relaxation contrast imaging approach which can image magnetic structures in the absence of an applied microwave field. Straightforward extensions promise imaging with sub-{\\mu}T sensitivity and sub-optical spatial and millisecond temporal resolution. This work establishes practical diamond-based wide-field microscopy for rapid high-sensitivity characterisation and imaging of magnetic samples, with the capability for investigating magnetic phenomena such as domain wall and skyrmion dynamics and the spin Hall effect in metals.

  16. FIRST HIGH-RESOLUTION IMAGES OF THE SUN IN THE 2796 Å Mg II k LINE

    SciTech Connect (OSTI)

    Riethmüller, T. L.; Solanki, S. K.; Hirzberger, J.; Danilovic, S.; Barthol, P.; Gandorfer, A.; Gizon, L.; Berkefeld, T.; Schmidt, W.; Knölker, M.; Del Toro Iniesta, J. C.

    2013-10-10

    We present the first high-resolution solar images in the Mg II k 2796 Å line. The images, taken through a 4.8 Å broad interference filter, were obtained during the second science flight of Sunrise in 2013 June by the Sunrise Filter Imager (SuFI) instrument. The Mg II k images display structures that look qualitatively very similar to images taken in the core of Ca II H. The Mg II images exhibit reversed granulation (or shock waves) in the internetwork regions of the quiet Sun, at intensity contrasts that are similar to those found in Ca II H. Very prominent in Mg II are bright points, both in the quiet Sun and in plage regions, particularly near the disk center. These are much brighter than at other wavelengths sampled at similar resolution. Furthermore, Mg II k images also show fibril structures associated with plage regions. Again, the fibrils are similar to those seen in Ca II H images, but tend to be more pronounced, particularly in weak plage.

  17. Aperture Photometry of Saturated Star Images from Digitised Photographic Plates

    E-Print Network [OSTI]

    J. L. Innis; D. W. Coates; A. P. Borisova; M. K. Tsvetkov

    2005-02-21

    Saturated stellar images on digitised photographic plates are many times greater in area than the `seeing disk' seen in unsaturated CCD images. Indeed the flux profile of a bright star can be traced out for several degrees from the star's centre. The radius of the saturated stellar image can often be directly related to the magnitude of the star, a fact well known and exploited in iris photometry. In this work we compare the radial flux profile of stars in the approximate range B ~9 to ~13 mag, obtained from scans of plates from the Bamberg Sky Patrol archive, with a profile of the form measured by King. We show that simple aperture photometry of saturated stellar images, obtained from photo-positives of scanned photographic plates, yield data that are in agreement with simulations using a (saturated) synthetic stellar radius profile. Raw plate magnitudes from this aperture photometry can be easily and satisfactorily transformed to standard magnitudes, as demonstrated in a recent study carried out by the current authors.

  18. Quantum fluctuations in the image of a Bose gas

    E-Print Network [OSTI]

    Antonio Negretti; Carsten Henkel; Klaus Molmer

    2008-08-27

    We analyze the information content of density profiles for an ultracold Bose gas of atoms and extract resolution limits for observables contained in these images. Our starting point is density correlations that we compute within the Bogoliubov approximation, taking into account quantum and thermal fluctuations beyond mean-field theory. This provides an approximate way to construct the joint counting statistics of atoms in an array of pixels covering the gas. We derive the Fisher information of an image and the associated Cramer-Rao sensitivity bound for measuring observables contained in the image. We elaborate on our recent study on position measurements of a dark soliton [Negretti et al., Phys. Rev. A 77, 043606 (2008)] where a sensitivity scaling with the atomic density as n^{-3/4} was found. We discuss here a wider class of soliton solutions and present a detailed analysis of the Bogoliubov excitations and the gapless (Goldstone) excitation modes. These fluctuations around the mean field contribute to the noise in the image, and we show how they can actually improve the ability to locate the position of the soliton.

  19. Tomographic image reconstruction and rendering with texture-mapping hardware

    SciTech Connect (OSTI)

    Azevedo, S.G.; Cabral, B.K.; Foran, J.

    1994-07-01

    The image reconstruction problem, also known as the inverse Radon transform, for x-ray computed tomography (CT) is found in numerous applications in medicine and industry. The most common algorithm used in these cases is filtered backprojection (FBP), which, while a simple procedure, is time-consuming for large images on any type of computational engine. Specially-designed, dedicated parallel processors are commonly used in medical CT scanners, whose results are then passed to graphics workstation for rendering and analysis. However, a fast direct FBP algorithm can be implemented on modern texture-mapping hardware in current high-end workstation platforms. This is done by casting the FBP algorithm as an image warping operation with summing. Texture-mapping hardware, such as that on the Silicon Graphics Reality Engine (TM), shows around 600 times speedup of backprojection over a CPU-based implementation (a 100 Mhz R4400 in this case). This technique has the further advantages of flexibility and rapid programming. In addition, the same hardware can be used for both image reconstruction and for volumetric rendering. The techniques can also be used to accelerate iterative reconstruction algorithms. The hardware architecture also allows more complex operations than straight-ray backprojection if they are required, including fan-beam, cone-beam, and curved ray paths, with little or no speed penalties.

  20. Collaborative Initiative in Biomedical Imaging to Study Complex Diseases

    SciTech Connect (OSTI)

    Lin, Weili; Fiddy, Michael A.

    2012-03-31

    The work reported addressed these topics: Fluorescence imaging; Optical coherence tomography; X-ray interferometer/phase imaging system; Quantitative imaging from scattered fields, Terahertz imaging and spectroscopy; and Multiphoton and Raman microscopy.

  1. Image display device in digital TV

    DOE Patents [OSTI]

    Choi, Seung Jong (Seoul, KR)

    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.

  2. Image Registration for Stability Testing of MEMS

    E-Print Network [OSTI]

    Memarsadeghi, Nargess; Blake, Peter N; Morey, Peter A; Landsman, Wayne B; Chambers, Victor J; Moseley, Samuel H; 10.1117/12.872076

    2013-01-01

    Image registration, or alignment of two or more images covering the same scenes or objects, is of great interest in many disciplines such as remote sensing, medical imaging, astronomy, and computer vision. In this paper, we introduce a new application of image registration algorithms. We demonstrate how through a wavelet based image registration algorithm, engineers can evaluate stability of Micro-Electro-Mechanical Systems (MEMS). In particular, we applied image registration algorithms to assess alignment stability of the MicroShutters Subsystem (MSS) of the Near Infrared Spectrograph (NIRSpec) instrument of the James Webb Space Telescope (JWST). This work introduces a new methodology for evaluating stability of MEMS devices to engineers as well as a new application of image registration algorithms to computer scientists.

  3. Heartbeat of a Nest: Using Imagers as Biological Sensors

    E-Print Network [OSTI]

    2007-01-01

    servers send periodic battery reading, image con- ?gurationcon?guration, image acquisition and reading of the battery

  4. L.J. van Vliet, F.R. Boddeke, D. Sudar, and I.T. Young, Image Detectors for Digital Image Microscopy, in: M.H.F. Wilkinson, F. Schut (eds.), Digital Image Analysis of Microbes; Imaging, Morphometry,

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    Microscopy, in: M.H.F. Wilkinson, F. Schut (eds.), Digital Image Analysis of Microbes; Imaging, Morphometry

  5. Image

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    RTINEZ Governor JOHN A. SANCHEZ Lieutenant Governor NEW MEXICO ENVIRONMENT DEPARTMENT Hazardous Waste Bureau 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303...

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    Work 11 * 04300 - Unit Masonry System. 12 1.3 Reference Documents 13 "Reference Stratigraphy and Rock Properties for the Waste Isolation Pilot Plant (WIPP) Project" 14 by R.D....

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    Governor July 29, 2013 Jose Franco, Manager Carlsbad Field Office Department of Energy P.O. Box 3090 NEW MEXICO ENVIRONMENT DEPARTMENT Hazardous Waste Bureau 2905 Rodeo...

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  20. Investigation of the signature of lung tissue in X-ray grating-based phase-contrast imaging

    E-Print Network [OSTI]

    Weber, Thomas; Haas, Wilhelm; Pelzer, Georg; Rieger, Jens; Ritter, André; Wucherer, Lukas; Braun, Jan Matthias; Durst, Jürgen; Michel, Thilo; Anton, Gisela

    2012-01-01

    Purpose: Grating-based X-ray phase-contrast imaging is a promising modality increasing the soft tissue contrast in medical imaging. In this work, the signature of lung tissue in X-ray grating-based physe-contrast imaging is investigated. Methods: We used a Talbot-Lau interferometer for our investigations of two C57BL/6 mice. Both underwent projection imaging and computed tomography. Results: The results show that the three images obtained by X-ray phase-contrast imaging show complementary anatomical structures. Especially the dark field image allows a more-exact determination of the position of the lung in the chest cavity. Conclusion: Due to its sensitivity to granular structures, the dark field image may be used for the diagnosis of lung diseases in earlier stages or without a CT scan. Furthermore, X-ray phase-contrast imaging may also have great potential in the application of animal laboratory sciences to reduce the number of required animals used in long-term translational, toxicity, and regenerative med...