Sample records for blind patient sight

  1. Department of Electrical Engineering Spring 2012 Virtual Sight for the Blind

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Electrical Engineering Spring 2012 Virtual Sight for the Blind Overview awareness to the blind, or "virtual sight". Users would wear the device on their body and use it to navigate was successfully created which allows blind users to navigate a room without sight. Our novel approach

  2. Telegraphic prose: The effects of a subjective deletion scheme on the comprehension and reading rate of blind and sighted students.

    E-Print Network [OSTI]

    Sheffield, Carol Ann

    1972-01-01T23:59:59.000Z

    for a Speci. fied Percentage of Deletion 114 APPENDIX K: Instructions for Phase II ? Passage and Test 115 APPENDIX L: Index of Agreement Among Sighted Ss on the Rank Order of Words Within Each Sentence 119 APPENDIX M: 10, 30, and 50 Percent... Treatment Conditions 50 14 Mean Reading Time (in minutes) and Standard Deviation for Blind and Sighted Ss in Each of the Four Treatment Conditions 51 15 Mean E and Standard Deviation for Blind and Sighted Ss in Each of the Four Treatment Conditions. 53...

  3. Social-cognitive abilities and the relationship between Trait Emotional Intelligence and Theory of Mind: in blind and sighted adults 

    E-Print Network [OSTI]

    Fawcett, Anastasia

    2011-06-29T23:59:59.000Z

    , it is not known whether these deficits are long-term and are present in the visually impaired adult population. Aims: The aims of this study were to examine the performance of blind (N=10) and sighted (N=20) adults on an Advanced Theory of Mind task...

  4. Cross-modal plasticity for tactile and auditory stimuli within the visual cortex of early blind human subjects

    E-Print Network [OSTI]

    Lewis, Lindsay Burke

    2009-01-01T23:59:59.000Z

    blind than sighted subjects) within subregions of somatosensory cortex is interesting, in this thesis,

  5. Blind Women and Invented Pathologies: The Claim Over Normalcy

    E-Print Network [OSTI]

    Hammer, Gili

    2011-01-01T23:59:59.000Z

    a spectrum of being a feminine-blind-person and inspire us120 Deshen, Shlomo. , 1992. Blind People: The Private and1995. "Sighted Lovers and Blind Husbands: Experiences of

  6. MicroSight Optics

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    MicroSight is an innovative gunsight technology that allows a marksman's eye to focus on both the front gunsight and the intended target. The MicroSight improves both firearm safety and performance by imaging two objects at different focal distances. The MicroSight was developed at Idaho National Laboratory, and has been licensed by Apollo Optical Systems. You can learn more about INL's research programs at http://www.facebook.com/idahonationallaboratory.

  7. MicroSight Optics

    SciTech Connect (OSTI)

    None

    2010-01-01T23:59:59.000Z

    MicroSight is an innovative gunsight technology that allows a marksman's eye to focus on both the front gunsight and the intended target. The MicroSight improves both firearm safety and performance by imaging two objects at different focal distances. The MicroSight was developed at Idaho National Laboratory, and has been licensed by Apollo Optical Systems. You can learn more about INL's research programs at http://www.facebook.com/idahonationallaboratory.

  8. A double-blind, randomized, multicenter phase 2 study of prasugrel versus placebo in adult patients with sickle cell disease

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Clinical and biological double-blind-study of ticlopidine inRESEARCH Open Access A double-blind, randomized, multicenterwe conducted a double-blind, randomized, placebo-controlled

  9. Including Blind Students in Computer Science Through Access to Graphs

    E-Print Network [OSTI]

    Young, R. Michael

    Including Blind Students in Computer Science Through Access to Graphs Suzanne Balik, Sean Mealin SKetching tool, GSK, to provide blind and sighted people with a means to create, examine, and share graphs (node-link diagrams) in real-time. GSK proved very effective for one blind computer science student

  10. o blind people develop superior abili-ties in auditory perception to compen-

    E-Print Network [OSTI]

    Behe, Michael J.

    D o blind people develop superior abili- ties in auditory perception to compen- sate for their lack or to voices. Here we show that blind people are better than sighted con- trols at judging the direction by the controls -- but only if they became blind at an early age. The younger the onset of blindness, the better

  11. Brain Fiber Architecture in the Blind Agatha D. Leea

    E-Print Network [OSTI]

    Thompson, Paul

    Alaryb , Patrice Vossb , Yi-Yu Choua , Caroline Bruna , Marina Baryshevaa , Arthur W. Toga a , Paul M and limbic areas differed in the blind versus sighted subjects. References: [1] Leporé, N., Brun, C., Chou, Y

  12. Be creative and produce a winning business idea or tool to help blind

    E-Print Network [OSTI]

    Anderson, Jim

    Be creative and produce a winning business idea or tool to help blind people succeed in tomorrow's economy! Working together to support blind and partially sighted people Open to all students Prize for winning team! Can you make a blind bit of difference to me? To enter the competition, scan this code

  13. Blind Reconciliation

    E-Print Network [OSTI]

    Jesus Martinez-Mateo; David Elkouss; Vicente Martin

    2013-01-29T23:59:59.000Z

    Information reconciliation is a crucial procedure in the classical post-processing of quantum key distribution (QKD). Poor reconciliation efficiency, revealing more information than strictly needed, may compromise the maximum attainable distance, while poor performance of the algorithm limits the practical throughput in a QKD device. Historically, reconciliation has been mainly done using close to minimal information disclosure but heavily interactive procedures, like Cascade, or using less efficient but also less interactive -just one message is exchanged- procedures, like the ones based in low-density parity-check (LDPC) codes. The price to pay in the LDPC case is that good efficiency is only attained for very long codes and in a very narrow range centered around the quantum bit error rate (QBER) that the code was designed to reconcile, thus forcing to have several codes if a broad range of QBER needs to be catered for. Real world implementations of these methods are thus very demanding, either on computational or communication resources or both, to the extent that the last generation of GHz clocked QKD systems are finding a bottleneck in the classical part. In order to produce compact, high performance and reliable QKD systems it would be highly desirable to remove these problems. Here we analyse the use of short-length LDPC codes in the information reconciliation context using a low interactivity, blind, protocol that avoids an a priori error rate estimation. We demonstrate that 2x10^3 bits length LDPC codes are suitable for blind reconciliation. Such codes are of high interest in practice, since they can be used for hardware implementations with very high throughput.

  14. OFDM PAPR Blind SLM

    E-Print Network [OSTI]

    No, Jong-Seon

    OFDM PAPR Blind SLM *, *, *, *, * *, ** joohs@ccl.snu.ac.kr, hsjbest@ccl.snu.ac.kr, lucidream@ccl.snu.ac.kr, jsno@snu.ac.kr, djshin@hanyang.ac.kr New Blind SLM with Low Complexity for PAPR- power ratio) . SLM (SI; side information) . m- sequence blind SLM

  15. Blind HIBE and its Applications to Identity-Based Blind Signature and Blind Decryption

    E-Print Network [OSTI]

    Blind HIBE and its Applications to Identity-Based Blind Signature and Blind Decryption Le Trieu Phong and Wakaha Ogata July 29, 2008 Abstract We explicitly describe and analyse blind hierachical identity-based encryption (blind HIBE) schemes, which are natural generalizations of blind IBE schemes [20

  16. Ecient Blind and Partially Blind Signatures Without Random Oracles

    E-Print Network [OSTI]

    Ecient Blind and Partially Blind Signatures Without Random Oracles Tatsuaki Okamoto NTT eective in many applications (e.g., blind signatures, group signatures, anonymous credentials etc.) than, this paper presents ecient blind signatures and par- tially blind signatures that are secure in the standard

  17. Efficient Blind and Partially Blind Signatures Without Random Oracles

    E-Print Network [OSTI]

    Efficient Blind and Partially Blind Signatures Without Random Oracles Tatsuaki Okamoto NTT effective in many applications (e.g., blind signatures, group signatures, anonymous credentials etc.) than, this paper presents efficient blind signatures and par­ tially blind signatures that are secure

  18. Sighting optics including an optical element having a first focal length and a second focal length and methods for sighting

    DOE Patents [OSTI]

    Crandall, David Lynn

    2011-08-16T23:59:59.000Z

    Sighting optics include a front sight and a rear sight positioned in a spaced-apart relation. The rear sight includes an optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and the front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus for a user images of the front sight and the target.

  19. Temporal and Spatial Analysis of Killer Whale Sightings in the Galapagos Marine Reserve, Ecuador

    E-Print Network [OSTI]

    Smith, Kerri

    2012-07-16T23:59:59.000Z

    sightings and resources; and (e) spatial change in sightings with seasonality. Sightings were roughly equally distributed between non-upwelling (56%) and upwelling seasons (July-December). No direct correlation was found between sightings and the MEI...

  20. Blind Analyses "The Answer's Not in the Back of the Book"

    E-Print Network [OSTI]

    Karczmarek, Joanna

    1 Blind Analyses -or- "The Answer's Not in the Back of the Book" Scott Oser Colloquium at UBC November 25, 2010 #12;2 Blind Analyses -or- "The Answer's Not in the Back of the Book" Scott Oser Sermon the importance of "blind analyses". Given that placebo effects do happen, and that patients interact

  1. A "blind" study of the power spectra analysis of respiratory sounds at the trachea of a sample of pulmonary insufficiency patients and normal subjects

    E-Print Network [OSTI]

    Wolf, Brenda Ann

    1985-01-01T23:59:59.000Z

    the condition of the lungs. The slow progress is due to: (1) a variety of human factor problems, (2) the limitations of the instrumentation, (3) the lack of total understanding of the mechanism of production of respiratory sounds, and (4) the lack... was a "blind s'tudy The equipment used in the analysis of the magnetic tapes consisted of the following components: 1. Ampex 2200 PM analog tape recorder 2, Datum Time Code Generator/Reader Model 9300 3. 20 Hz, 1800 Hz low pass filters 4. 100 Hz...

  2. Indoor Navigational Aid Using Active RFID and QR-Code For sighted and Blind People

    E-Print Network [OSTI]

    van Schyndel, Ron

    supply because it depends on the power of the probe signal itself for data transformation . Furthermore are using passive RFID systems. An advantage of passive RFID technology is that it does not require a power skyscrapers or inside buildings, their system is disabled or may provide inaccurate positioning infor- mation

  3. WebinSitu: A Comparative Analysis of Blind and Sighted Browsing Behavior

    E-Print Network [OSTI]

    Wobbrock, Jacob O.

    . Cavender, Jeremy T. Brudvik, Jacob O. Wobbrock and Richard E. Ladner Computer Science and Engineering or commercial advantage and that copies bear this notice and the full citation on the first page. To copy

  4. Mometasone Furoate Effect on Acute Skin Toxicity in Breast Cancer Patients Receiving Radiotherapy: A Phase III Double-Blind, Randomized Trial From the North Central Cancer Treatment Group N06C4

    SciTech Connect (OSTI)

    Miller, Robert C., E-mail: miller.robert@mayo.ed [Department of Radiation Oncology, Mayo Clinic, Rochester, MN (United States); Schwartz, David J. [Minneapolis Radiation Oncology, P.A., Minneapolis, MN (United States); Sloan, Jeff A. [Division of Biomedical Informatics and Biostatistics, Mayo Clinic, Rochester, MN (United States); Griffin, Patricia C. [Upstate Carolina Community Clinic Oncology Program, Spartanburg, SC (United States); Deming, Richard L. [Iowa Oncology Research Association Community Clinic Oncology Program, Des Moines, Iowa (United States); Anders, Jon C. [Wichita Community Clinical Oncology Program, Wichita, KS (United States); Stoffel, Thomas J. [Cedar Rapids Oncology Project Community Clinic Oncology Program, Cedar Rapids, IA (United States); Haselow, Robert E. [Metro-Minnesota Community Clinical Oncology Program, St. Louis Park, MN (United States); Schaefer, Paul L. [Toledo Community Hospital Oncology Program Community Clinic Oncology Program, Toledo, OH (United States); Bearden, James D. [Upstate Carolina Community Clinic Oncology Program, Spartanburg, SC (United States); Atherton, Pamela J. [Division of Biomedical Informatics and Biostatistics, Mayo Clinic, Rochester, MN (United States); Loprinzi, Charles L.; Martenson, James A. [Department of Radiation Oncology, Mayo Clinic, Rochester, MN (United States)

    2011-04-01T23:59:59.000Z

    Purpose: A two-arm, double-blind, randomized trial was performed to evaluate the effect of 0.1% mometasone furoate (MMF) on acute skin-related toxicity in patients undergoing breast or chest wall radiotherapy. Methods and Materials: Patients with ductal carcinoma in situ or invasive breast carcinoma who were undergoing external beam radiotherapy to the breast or chest wall were randomly assigned to apply 0.1% MMF or placebo cream daily. The primary study endpoint was the provider-assessed maximal grade of Common Terminology Criteria for Adverse Events, version 3.0, radiation dermatitis. The secondary endpoints included provider-assessed Common Terminology Criteria for Adverse Events Grade 3 or greater radiation dermatitis and adverse event monitoring. The patient-reported outcome measures included the Skindex-16, the Skin Toxicity Assessment Tool, a Symptom Experience Diary, and a quality-of-life self-assessment. An assessment was performed at baseline, weekly during radiotherapy, and for 2 weeks after radiotherapy. Results: A total of 176 patients were enrolled between September 21, 2007, and December 7, 2007. The provider-assessed primary endpoint showed no difference in the mean maximum grade of radiation dermatitis by treatment arm (1.2 for MMF vs. 1.3 for placebo; p = .18). Common Terminology Criteria for Adverse Events toxicity was greater in the placebo group (p = .04), primarily from pruritus. For the patient-reported outcome measures, the maximum Skindex-16 score for the MMF group showed less itching (p = .008), less irritation (p = .01), less symptom persistence or recurrence (p = .02), and less annoyance with skin problems (p = .04). The group's maximal Skin Toxicity Assessment Tool score showed less burning sensation (p = .02) and less itching (p = .002). Conclusion: Patients receiving daily MMF during radiotherapy might experience reduced acute skin toxicity compared with patients receiving placebo.

  5. Tactile measurement with a GelSight sensor

    E-Print Network [OSTI]

    Yuan, Wenzhen, S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    This thesis introduces a method of measuring contact force with GelSight. GelSight is an optical-based tactile sensor that uses a piece of coated elastomer as the contact medium. A camera records the distortion of the ...

  6. Randomized, Double-Blinded, Placebo-Controlled, Trial of Risedronate for the Prevention of Bone Mineral Density Loss in Nonmetastatic Prostate Cancer Patients Receiving Radiation Therapy Plus Androgen Deprivation Therapy

    SciTech Connect (OSTI)

    Choo, Richard [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States)] [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States); Lukka, Himu [Department of Radiation Oncology, Juravinski Cancer Center, McMaster University, Hamilton (Canada)] [Department of Radiation Oncology, Juravinski Cancer Center, McMaster University, Hamilton (Canada); Cheung, Patrick [Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Toronto (Canada)] [Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Toronto (Canada); Corbett, Tom [Department of Radiation Oncology, Juravinski Cancer Center, McMaster University, Hamilton (Canada)] [Department of Radiation Oncology, Juravinski Cancer Center, McMaster University, Hamilton (Canada); Briones-Urbina, Rosario [Department of Medicine, Women's College Hospital, University of Toronto, Toronto (Canada)] [Department of Medicine, Women's College Hospital, University of Toronto, Toronto (Canada); Vieth, Reinhold [Departments of Nutritional Sciences and Laboratory Medicine and Pathology, Mount Sinai Hospital, University of Toronto, Toronto (Canada)] [Departments of Nutritional Sciences and Laboratory Medicine and Pathology, Mount Sinai Hospital, University of Toronto, Toronto (Canada); Ehrlich, Lisa [Department of Radiology, Sunnybrook Health Sciences Center, University of Toronto (Canada)] [Department of Radiology, Sunnybrook Health Sciences Center, University of Toronto (Canada); Kiss, Alex [Department of Health Policy, Management, and Evaluation, Sunnybrook Health Sciences Center, University of Toronto, Toronto (Canada)] [Department of Health Policy, Management, and Evaluation, Sunnybrook Health Sciences Center, University of Toronto, Toronto (Canada); Danjoux, Cyril, E-mail: Cyril.danjoux@sunnybrook.ca [Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Toronto (Canada)] [Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Toronto (Canada)

    2013-04-01T23:59:59.000Z

    Purpose: Androgen deprivation therapy (ADT) has been used as an adjuvant treatment to radiation therapy (RT) for the management of locally advanced prostate carcinoma. Long-term ADT decreases bone mineral density (BMD) and increases the risk of osteoporosis. The objective of this clinical trial was to evaluate the efficacy of risedronate for the prevention of BMD loss in nonmetastatic prostate cancer patients undergoing RT plus 2 to 3 years of ADT. Methods and Materials: A double-blinded, placebo-controlled, randomized trial was conducted for nonmetastatic prostate cancer patients receiving RT plus 2 to 3 years of ADT. All had T scores > ?2.5 on dual energy x-ray absorptiometry at baseline. Patients were randomized 1:1 between risedronate and placebo for 2 years. The primary endpoints were the percent changes in the BMD of the lumbar spine at 1 and 2 years from baseline, measured by dual energy x-ray absorptiometry. Analyses of the changes in BMD and bone turnover biomarkers were carried out by comparing mean values of the intrapatient changes between the 2 arms, using standard t tests. Results: One hundred four patients were accrued between 2004 and 2007, with 52 in each arm. Mean age was 66.8 and 67.5 years for the placebo and risedronate, respectively. At 1 and 2 years, mean (±SE) BMD of the lumbar spine decreased by 5.77% ± 4.66% and 13.55% ± 6.33%, respectively, in the placebo, compared with 0.12% ± 1.29% at 1 year (P=.2485) and 0.85% ± 1.56% (P=.0583) at 2 years in the risedronate. The placebo had a significant increase in serum bone turnover biomarkers compared with the risedronate. Conclusions: Weekly oral risedronate prevented BMD loss at 2 years and resulted in significant suppression of bone turnover biomarkers for 24 months for patients receiving RT plus 2 to 3 years of ADT.

  7. Supporting Blind Photography Chandrika Jayant

    E-Print Network [OSTI]

    Bigham, Jeffrey P.

    Supporting Blind Photography Chandrika Jayant , Hanjie Ji , Samuel White , and Jeffrey P. Bigham.ji,swhite,jbigham}@cs.rochester.edu ABSTRACT Blind people want to take photographs for the same reasons as others­ to record important events technology and human-powered services can be used to give blind people feedback on their environment

  8. Blind Deblurring Using a Simplified Sharpness Index

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Deblurring Using a Simplified Sharpness Index Arthur Leclaire and Lionel Moisan Universit deconvolution filter and the recent blind deconvolution algorithm of Levin et al. Keywords: global phase coherence, sharpness, blind deconvolution, no- reference image quality assessment, oracle deconvolution

  9. Vibrotactile Guidance for Wayfinding of Blind Walkers

    E-Print Network [OSTI]

    Manduchi, Roberto; Flores, German; Kurniawan, Sri; Morales, Lourdes; Martinson, Eric; Sisbot, Akin

    2015-01-01T23:59:59.000Z

    travel aid for the blind. Systems, Man, and Cybernetics,Guidance for Wayfinding of Blind Walkers G. Flores, S.the form of a belt for guiding blind walkers. This interface

  10. Blind Quantum Computation

    E-Print Network [OSTI]

    Pablo Arrighi; Louis Salvail

    2006-06-06T23:59:59.000Z

    We investigate the possibility of "having someone carry out the work of executing a function for you, but without letting him learn anything about your input". Say Alice wants Bob to compute some known function f upon her input x, but wants to prevent Bob from learning anything about x. The situation arises for instance if client Alice has limited computational resources in comparison with mistrusted server Bob, or if x is an inherently mobile piece of data. Could there be a protocol whereby Bob is forced to compute f(x) "blindly", i.e. without observing x? We provide such a blind computation protocol for the class of functions which admit an efficient procedure to generate random input-output pairs, e.g. factorization. The cheat-sensitive security achieved relies only upon quantum theory being true. The security analysis carried out assumes the eavesdropper performs individual attacks. Keywords: Secure Circuit Evaluation, Secure Two-party Computation, Information Hiding, Information gain vs disturbance.

  11. Blind Deconvolution Friday afternoon lecture

    E-Print Network [OSTI]

    O'Leary, Dianne P.

    Blind Deconvolution Fall 2005 Friday afternoon lecture Dianne P. O'Leary c 2005 Blind Image Deblurring through Structured Total Least Norm Dianne P. O'Leary Computer Science Dept. and Institute a preconditioner. Our contribution: · Pruessner and O'Leary: extended Rosen et al STLN algorithm to include RSTLN

  12. Motivations Blind Equalisation Main Results Example Conclusions Blind Equalisation of High-Order QAM Channels Using a

    E-Print Network [OSTI]

    Chen, Sheng

    Motivations Blind Equalisation Main Results Example Conclusions Blind Equalisation of High International Conference on Automation & Computing, 2009 #12;Motivations Blind Equalisation Main Results Example Conclusions Outline 1 Motivations Blind Equalisation of QAM System Our Contribution 2 Blind Equalisation

  13. Learning words from sights and sounds: a computational model

    E-Print Network [OSTI]

    Learning words from sights and sounds: a computational model Deb K. Roy*, Alex P. Pentland MIT.: 1-617-253-0596; fax: 1-617-253-8874. E-mail address: dkroy@media.mit.edu (D.K. Roy). http

  14. Blind Paraunitary Equalization Sylvie Icart, Pierre Comon,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Paraunitary Equalization Sylvie Icart, Pierre Comon, Laboratoire I3S, CNRS UMR 6070 Europe, Sophia-Antipolis Abstract In this paper a blind MIMO space-time equalizer is described, dedicated algorithm are reported. Key words: Blind deconvolution, Blind equalization, Multiple

  15. BLIND DECONVOLUTION AND DEBLURRING IN IMAGE ANALYSIS

    E-Print Network [OSTI]

    Qiu, Peihua

    BLIND DECONVOLUTION AND DEBLURRING IN IMAGE ANALYSIS Peter Hall1 and Peihua Qiu1.2 ABSTRACT. Blind. This is a blind deconvolution problem and is, of course, significantly more challenging than its more conventional, non-blind counterpart. See, for example, work of Kundur and Hatzinakos (1998), Carasso (2001

  16. Sighting optics including an optical element having a first focal length and a second focal length

    DOE Patents [OSTI]

    Crandall, David Lynn (Idaho Falls, ID)

    2011-08-01T23:59:59.000Z

    One embodiment of sighting optics according to the teachings provided herein may include a front sight and a rear sight positioned in spaced-apart relation. The rear sight includes an optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and the front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus, for a user, images of the front sight and the target.

  17. Blind transmembrane puncture access : design and development of a novel laparoscopic trocar and blade retraction mechanism

    E-Print Network [OSTI]

    Begg, Nikolai David Michael

    2011-01-01T23:59:59.000Z

    Blind puncture access procedures are frequent in medicine but can lead to complications due to over-puncture. When tissue membranes yield under applied stress, the device suddenly accelerates forward into the patient. ...

  18. Universal blind quantum computation

    E-Print Network [OSTI]

    Anne Broadbent; Joseph Fitzsimons; Elham Kashefi

    2009-12-12T23:59:59.000Z

    We present a protocol which allows a client to have a server carry out a quantum computation for her such that the client's inputs, outputs and computation remain perfectly private, and where she does not require any quantum computational power or memory. The client only needs to be able to prepare single qubits randomly chosen from a finite set and send them to the server, who has the balance of the required quantum computational resources. Our protocol is interactive: after the initial preparation of quantum states, the client and server use two-way classical communication which enables the client to drive the computation, giving single-qubit measurement instructions to the server, depending on previous measurement outcomes. Our protocol works for inputs and outputs that are either classical or quantum. We give an authentication protocol that allows the client to detect an interfering server; our scheme can also be made fault-tolerant. We also generalize our result to the setting of a purely classical client who communicates classically with two non-communicating entangled servers, in order to perform a blind quantum computation. By incorporating the authentication protocol, we show that any problem in BQP has an entangled two-prover interactive proof with a purely classical verifier. Our protocol is the first universal scheme which detects a cheating server, as well as the first protocol which does not require any quantum computation whatsoever on the client's side. The novelty of our approach is in using the unique features of measurement-based quantum computing which allows us to clearly distinguish between the quantum and classical aspects of a quantum computation.

  19. Multichannel Blind Identification: From Subspace to Maximum Likelihood Methods

    E-Print Network [OSTI]

    Tong, Lang

    Multichannel Blind Identification: From Subspace to Maximum Likelihood Methods LANG TONG, MEMBER, IEEE, AND SYLVIE PERREAU Invited Paper A review of recent blind channel estimation algorithms is pre-- Blind equalization, parameter estimation, system identification. I. INTRODUCTION A. What Is Blind

  20. Blind Block Synchronization Algorithms in Cyclic Prefix Systems

    E-Print Network [OSTI]

    Vaidyanathan, P. P.

    Blind Block Synchronization Algorithms in Cyclic Prefix Systems Borching Su Department to solving the problem blindly, that is, where training symbols are not available. Blind symbol synchronization problem is especially important in many blind channel estimation algorithms in the literature

  1. Blind Source Separation 2 Understanding Two Simultaneous Speeches by Blind Source Separation

    E-Print Network [OSTI]

    Ikeda, Shiro

    Blind Source Separation 2 Understanding Two Simultaneous Speeches by Blind Source Separation) to segregate speech streams from a mixture of sounds, while the other ex- ploits Blind Source Separation the performance of Blind Source Separation by using the same three benchmarks of 500 mix- ture of two speeches

  2. Blind Analysis in Particle Physics Aaron Roodman

    E-Print Network [OSTI]

    Browder, Tom

    Blind Analysis in Particle Physics Aaron Roodman Stanford Linear Accelerator Center, Stanford, CA 94025, USA A review of the blind analysis technique, as used in particle physics measurements, is presented. The history of blind analyses in physics is briefly discussed. Next the dangers of experimenter

  3. BLIND DECONVOLUTION AND DEBLURRING IN IMAGE ANALYSIS

    E-Print Network [OSTI]

    Qiu, Peihua

    BLIND DECONVOLUTION AND DEBLURRING IN IMAGE ANALYSIS Peter Hall 1 and Peihua Qiu 1.2 ABSTRACT. Blind deconvolution problems arise in image analysis when both the extent of image blur, and the true from image data. This is a blind deconvolution problem and is, of course, significantly more

  4. Blind Channel Equalization and -Approximation Algorithms

    E-Print Network [OSTI]

    Ye, Yinyu

    Blind Channel Equalization and #15;-Approximation Algorithms #3; Qingyu Li 1 , Er-Wei Bai 1 University of Iowa Iowa City, IA 52242 Abstract In this paper, we show that a blind equalizer can be obtained without using any sta- tistical information on the input by formulating the blind channel equalization

  5. Group Blind Digital Signatures: Theory and Applications

    E-Print Network [OSTI]

    Goldwasser, Shafi

    Group Blind Digital Signatures: Theory and Applications by Zul kar Amin Ramzan Submitted Committee on Graduate Students #12;Group Blind Digital Signatures: Theory and Applications by Zul kar Amin Blind Digital Signature. This construct combines the already existing notions of a Group Digital

  6. Group Blind Digital Signatures: Theory and Applications

    E-Print Network [OSTI]

    Goldwasser, Shafi

    Group Blind Digital Signatures: Theory and Applications by Zulfikar Amin Ramzan Submitted by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arthur C. Smith Chairman, Departmental Committee on Graduate Students #12; Group Blind Digital Signatures cryptographic construct called a Group Blind Digital Signature. This construct combines the already existing

  7. Blind spots between quantum states

    E-Print Network [OSTI]

    Eduardo Zambrano; Alfredo M Ozorio de Almeida

    2009-09-30T23:59:59.000Z

    The overlap of a large quantum state with its image, under tiny translations, oscillates swiftly. We here show that complete orthogonality occurs generically at isolated points. Decoherence, in the Markovian approximation, lifts the correlation minima from zero much more quickly than the Wigner function is smoothed into a positive phase space distribution. In the case of a superposition of coherent states, blind spots depend strongly on positions and amplitudes of the components, but they are only weakly affected by relative phases and the various degrees and directions of squeezing. The blind spots for coherent state triplets are special in that they lie close to an hexagonal lattice: Further superpositions of translated triplets, specified by nodes of one of the sublattices, are quasi-orthogonal to the original triplet and to any state, likewise constructed on the other sublattice.

  8. A system for optimizing interior daylight distribution using reflective Venetian blinds with independent blind angle control

    E-Print Network [OSTI]

    McGuire, Molly E

    2005-01-01T23:59:59.000Z

    An operational algorithm for blind angle control is developed to optimize the daylighting performance of a system of reflective Venetian blinds. Numerical modeling and experiment confirm that independent control of alternating ...

  9. Enhancing Independence and Safety for Blind and Deaf-Blind Public Transit Riders

    E-Print Network [OSTI]

    Wobbrock, Jacob O.

    , Sanjana Prasain, Alan Borning, Emily Fortuna, Richard E. Ladner, Jacob O. Wobbrock Computer Science, prasains, borning, fortuna, ladner}@cs.washington.edu, wobbrock@uw.edu ABSTRACT Blind and deaf-blind people

  10. SOLAR-BLIND PYROMETRIC TEMPERATURE MEASUREMENT UNDER CONCENTRATED SOLAR

    E-Print Network [OSTI]

    SOLAR-BLIND PYROMETRIC TEMPERATURE MEASUREMENT UNDER CONCENTRATED SOLAR IRRADIATION Markus Pfänder1 temperature, pyrometric temperature measurement, solar-blind ------------------------------------ 1 #12-called solar-blind spectral measurement ranges, where the contribution of reflected solar radiation

  11. BLIND SPOTS OF QUALITATIVE SIMULATORS Nuri Tasdemir

    E-Print Network [OSTI]

    BLIND SPOTS OF QUALITATIVE SIMULATORS by Nuri Ta¸sdemir BS, in Electrical and Electronics in Computer Engineering Bogazi¸ci University 2007 #12;ii BLIND SPOTS OF QUALITATIVE SIMULATORS APPROVED BY: Prof. A.C. Cem Say . . . . . . . . . . . . . . . . . . . (Thesis Supervisor) Prof. H. Levent Akin

  12. The Path of the Blind Watchmaker: A Model of Evolution

    E-Print Network [OSTI]

    Poggio, Andrew Anthony

    2011-01-01T23:59:59.000Z

    path of the blind watchmaker. This thesis presents a novelBlind WatchMaker Path (BWMPath) BWMPath contains the bulk of the software written for this thesis,

  13. acid blinded trial: Topics by E-print Network

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

    Domain Method for Blind Source Separation of Convolutive Audio Mixtures Kamran Reilly, James P. 462 BLIND SIGNAL SEPARATION: AN OVERVIEW OF DENSITYBASED METHODS S.C....

  14. assessor blind trial: Topics by E-print Network

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

    Domain Method for Blind Source Separation of Convolutive Audio Mixtures Kamran Reilly, James P. 483 BLIND SIGNAL SEPARATION: AN OVERVIEW OF DENSITYBASED METHODS S.C....

  15. Blind topological measurement-based quantum computation

    E-Print Network [OSTI]

    Tomoyuki Morimae; Keisuke Fujii

    2012-09-06T23:59:59.000Z

    Blind quantum computation is a novel secure quantum-computing protocol that enables Alice, who does not have sufficient quantum technology at her disposal, to delegate her quantum computation to Bob, who has a fully fledged quantum computer, in such a way that Bob cannot learn anything about Alice's input, output and algorithm. A recent proof-of-principle experiment demonstrating blind quantum computation in an optical system has raised new challenges regarding the scalability of blind quantum computation in realistic noisy conditions. Here we show that fault-tolerant blind quantum computation is possible in a topologically protected manner using the Raussendorf-Harrington-Goyal scheme. The error threshold of our scheme is 0.0043, which is comparable to that (0.0075) of non-blind topological quantum computation. As the error per gate of the order 0.001 was already achieved in some experimental systems, our result implies that secure cloud quantum computation is within reach.

  16. Accident causation study on roadways with limited sight distance crest vertical curves

    E-Print Network [OSTI]

    Stoddard, Angela May

    1994-01-01T23:59:59.000Z

    reflect the driver and vehicle population currently on the transportation network. An accident causation study was conducted to determine if roadways with limited stopping sight distance present a safety hazard for the transportation network. Rural two...

  17. Adaptive Blind Signal Processing--Neural Network Approaches

    E-Print Network [OSTI]

    Vialatte, François

    Adaptive Blind Signal Processing--Neural Network Approaches SHUN-ICHI AMARI, FELLOW, IEEE are presented for the problem of adaptive blind signal processing, especially instantaneous blind separation and multichannel blind deconvolution/equalization of independent source signals. We dis- cuss recent developments

  18. A 3-dimensional analysis of sight distance on interchange ramps and connectors

    E-Print Network [OSTI]

    Sanchez, Eddie

    1992-01-01T23:59:59.000Z

    A 3-DIMENSIONAL ANALYSIS OF SIGHT DISTANCE ON INTERCHANGE RAMPS AND CONNECTORS A Thesis by EDDIE SANCHEZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfdlment of the requiretnents for the degree of MASTER... OF SCIENCE August 1992 Major Subject: Civil Engineering A 3-DIMENSIONAL ANALYSIS OF SIGHT DISTANCE ON INTERCHANGE RAMPS AND CONNECTORS A Thesis by EDDIE SANCHEZ Approved as to style and content by: Raymond A. Krammes (Chair of Committee) N ' n J...

  19. Cyclostationary blind equalisation in mobile communications 

    E-Print Network [OSTI]

    Altuna, Jon

    Blind channel identification and equalisation are the processes by which a channel impulse response can be identified and proper equaliser filter coefficients can be obtained, without knowledge of the transmitted ...

  20. Blind assessment of localisation microscope image resolution

    E-Print Network [OSTI]

    Rees, Eric J; Erdelyi, Miklos; Pinotsi, Dorothea; Knight, Alex; Metcalf, Daniel; Kaminski, Clemens F

    2012-12-10T23:59:59.000Z

    localisation precisions and densities. Methods By analysing localisation microscopy as a statistical method of Density Estimation, we present a method that produces a blind estimate of the resolution in a super-resolved image. This estimate is derived directly...

  1. Acoustic signal estimation using multiple blind observations

    E-Print Network [OSTI]

    Lee, Joonsung

    2006-01-01T23:59:59.000Z

    This thesis proposes two algorithms for recovering an acoustic signal from multiple blind measurements made by sensors (microphones) over an acoustic channel. Unlike other algorithms that use a posteriori probabilistic ...

  2. A correlation between hard gamma-ray sources and cosmic voids along the line of sight

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

    Furniss, A.; Sutter, P. M.; Primack, J. R.; Dominguez, A.

    2014-11-25T23:59:59.000Z

    We estimate the galaxy density along lines of sight to hard extragalactic gamma-ray sources by correlating source positions on the sky with a void catalog based on the Sloan Digital Sky Survey (SDSS). Extragalactic gamma-ray sources that are detected at very high energy (VHE; E > 100 GeV) or have been highlighted as VHE-emitting candidates in the Fermi Large Area Telescope hard source catalog (together referred to as “VHE-like” sources) are distributed along underdense lines of sight at the 2.4#27; level. There is also a less suggestive correlation for the Fermi hard source population (1.7#27;). A correlation between 10-500 GeV flux and underdense fraction along the line of sight for VHE-like and Fermi hard sources is found at 2.4#27; and 2.6#27;, calculated from the Pearson correlation coefficients of r = 0.57 and 0.47, respectively. The preference for underdense sight lines is not displayed by gamma-ray emitting galaxies within the second Fermi catalog, containing sources detected above 100 MeV, or the SDSS DR7 quasar catalog. We investigate whether this marginal correlation might be a result of lower extragalactic background light (EBL) photon density within the underdense regions and find that, even in the most extreme case of a entirely underdense sight line, the EBL photon density is only 2% less than the nominal EBL density. Translating this into gamma-ray attenuation along the line of sight for a highly attenuated source with opacity #28;(E, z) #24; 5, we estimate that the attentuation of gamma-rays decreases no more than 10%. This decrease, although non-neglible, is unable to account for the apparent hard source correlation with underdense lines of sight.

  3. A correlation between hard gamma-ray sources and cosmic voids along the line of sight

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

    Furniss, A.; Sutter, P. M.; Primack, J. R.; Dominguez, A.

    2014-11-25T23:59:59.000Z

    We estimate the galaxy density along lines of sight to hard extragalactic gamma-ray sources by correlating source positions on the sky with a void catalog based on the Sloan Digital Sky Survey (SDSS). Extragalactic gamma-ray sources that are detected at very high energy (VHE; E > 100 GeV) or have been highlighted as VHE-emitting candidates in the Fermi Large Area Telescope hard source catalog (together referred to as “VHE-like” sources) are distributed along underdense lines of sight at the 2.4#27; level. There is also a less suggestive correlation for the Fermi hard source population (1.7#27;). A correlation between 10-500 GeVmore »flux and underdense fraction along the line of sight for VHE-like and Fermi hard sources is found at 2.4#27; and 2.6#27;, calculated from the Pearson correlation coefficients of r = 0.57 and 0.47, respectively. The preference for underdense sight lines is not displayed by gamma-ray emitting galaxies within the second Fermi catalog, containing sources detected above 100 MeV, or the SDSS DR7 quasar catalog. We investigate whether this marginal correlation might be a result of lower extragalactic background light (EBL) photon density within the underdense regions and find that, even in the most extreme case of a entirely underdense sight line, the EBL photon density is only 2% less than the nominal EBL density. Translating this into gamma-ray attenuation along the line of sight for a highly attenuated source with opacity #28;(E, z) #24; 5, we estimate that the attentuation of gamma-rays decreases no more than 10%. This decrease, although non-neglible, is unable to account for the apparent hard source correlation with underdense lines of sight.« less

  4. DEFINING THE 'BLIND SPOT' OF HINODE EIS AND XRT TEMPERATURE MEASUREMENTS

    SciTech Connect (OSTI)

    Winebarger, Amy R.; Cirtain, Jonathan; Mulu-Moore, Fana [NASA Marshall Space Flight Center, VP 62, Huntsville, AL 35812 (United States); Warren, Harry P. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Schmelz, Joan T. [Physics Department, University of Memphis, Memphis, TN 38152 (United States); Golub, Leon [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States); Kobayashi, Ken, E-mail: amy.r.winebarger@nasa.gov [Center for Space Plasma and Aeronomic Research, 320 Sparkman Dr, Huntsville, AL 35805 (United States)

    2012-02-20T23:59:59.000Z

    Observing high-temperature, low emission measure plasma is key to unlocking the coronal heating problem. With current instrumentation, a combination of EUV spectral data from Hinode Extreme-ultraviolet Imaging Spectrometer (EIS; sensitive to temperatures up to 4 MK) and broadband filter data from Hinode X-ray Telescope (XRT; sensitive to higher temperatures) is typically used to diagnose the temperature structure of the observed plasma. In this Letter, we demonstrate that a 'blind spot' exists in temperature-emission measure space for combined Hinode EIS and XRT observations. For a typical active region core with significant emission at 3-4 MK, Hinode EIS and XRT are insensitive to plasma with temperatures greater than {approx}6 MK and emission measures less than {approx}10{sup 27} cm{sup -5}. We then demonstrate that the temperature and emission measure limits of this blind spot depend upon the temperature distribution of the plasma along the line of sight by considering a hypothetical emission measure distribution sharply peaked at 1 MK. For this emission measure distribution, we find that EIS and XRT are insensitive to plasma with emission measures less than {approx}10{sup 26} cm{sup -5}. We suggest that a spatially and spectrally resolved 6-24 Angstrom-Sign spectrum would improve the sensitivity to these high-temperature, low emission measure plasma.

  5. Blind Consent? A Social Psychological Investigation of Non-Readership of Click-Through Agreements

    E-Print Network [OSTI]

    Bartlett, Robert P. III

    2009-01-01T23:59:59.000Z

    Head: NON-READERSHIP OF CONTRACTS Blind Consent? A Socialterms. Word count: 179 Blind Consent? A Social Psychologicalfactors that may encourage blind consent to CTAs. A useful

  6. Blind separation and tracking of sources with spatial, temporal and spectral dynamics

    E-Print Network [OSTI]

    Masnadi-Shirazi, Alireza

    2012-01-01T23:59:59.000Z

    and Spectral Dynamics in Blind Source Sepa- ration andYilmaz and S. Rickard, “Blind separation of speech mixturesH. Sawada, “Underdetermined blind separation for speech in

  7. Gate-teleportation-based blind quantum computation

    E-Print Network [OSTI]

    Mear M. R. Koochakie

    2014-12-25T23:59:59.000Z

    Blind quantum computation (BQC) is a model in which a computation is performed on a server by a client such that the server is kept blind about the input, the algorithm, and the output of the computation. Here we layout a general framework for BQC which, unlike the previous BQC models, does not constructed on specific computational model. A main ingredient of our construction is gate teleportation. We demonstrate that our framework can be straightforwardly implemented on circuit-based models as well as measurement-based models of quantum computation. We illustrate our construction by showing that universal BQC is possible on correlation-space measurement-based quantum computation models.

  8. Consistent blind protein structure generation from NMR chemical shift data

    E-Print Network [OSTI]

    Baker, David

    Consistent blind protein structure generation from NMR chemical shift data Yang Shen*, Oliver Lange been successfully applied in a blind manner to nine protein targets with molecular masses up to 15.4 k

  9. Blind teen-age students' expectations Focus: school-age

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind teen-age students' expectations Focus: school-age Topic: What are the changing demands disabled pupils, inclusion increased significantly, particularly in high schools. Blind learners, who used. For this lecture, I will present a few blind students' opinions, which will help building the items for the case

  10. Blind subpixel Point Spread Function estimation from scaled image pairs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind subpixel Point Spread Function estimation from scaled image pairs Mauricio Delbracio§ Andr, causing aliasing effects. This work introduces a blind algorithm for the subpixel estimation of the point shows that the proposed algorithm reaches the accuracy levels of the best non- blind state

  11. Equivocal Blind Signatures and Adaptive UC-Security Aggelos Kiayias

    E-Print Network [OSTI]

    Equivocal Blind Signatures and Adaptive UC-Security Aggelos Kiayias Hong-Sheng Zhou April 12, 2007 Abstract We study the design of practical blind signatures in the universal composability (UC) setting against adaptive adversaries. We introduce a new property for blind signature schemes

  12. Blind Source Separation: the Sparsity Starck J.-L. a

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Source Separation: the Sparsity Revolution Bobin J. a Starck J.-L. a Moudden Y. a Fadili M issues have already been addressed as testified by the wide literature on the so-called blind source signal representations. GMCA is a fast and efficient blind source separation method. In remote sensing

  13. BLIND ITERATIVE RESTORATION OF IMAGES WITH SPATIALLY-VARYING BLUR

    E-Print Network [OSTI]

    Bardsley, John

    BLIND ITERATIVE RESTORATION OF IMAGES WITH SPATIALLY-VARYING BLUR John Bardsley Stuart Jefferies (PSF) by using a combination of methods including sectioning and phase diversity blind deconvolution whose PSFs are correlated and approximately spatially-invariant, and apply iterative blind deconvolution

  14. BLIND DECONVOLUTION OF VIDEO SEQUENCES Ferreol Soulez1,2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND DECONVOLUTION OF VIDEO SEQUENCES Ferr´eol Soulez1,2 , ´Eric Thi´ebaut1 , Yves Tourneur3'h^opital de la Croix Rousse, Hospices Civiles de Lyon, France ABSTRACT We present a new blind deconvolution regularization, a temporal regularization constrains the blind deconvolution prob- lem, improving its

  15. Deconvolution and Blind Deconvolution in 1.1 Introduction ............................................................. 1

    E-Print Network [OSTI]

    Masci, Frank

    1 Deconvolution and Blind Deconvolution in Astronomy CONTENTS 1.1 Introduction and Blind Deconvolution ........................................ 22 1.10 Conclusions and Chapter Summary in order to fully take ad- 0-8493-0052-5/00/$0.00+$.50 c 2001 by CRC Press LLC 1 #12;2 Blind image

  16. Blind channel identification and extraction of more sources than sensors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind channel identification and extraction of more sources than sensors P. Comonba a I3S that a static system with more inputs (sources) than outputs (sensors, or channels) cannot be blindly identified blind identification problem. Here, in order to demonstrate its feasibility, the procedure is detailed

  17. New Blind Signatures Equivalent to Factorization (Extended Abstract)

    E-Print Network [OSTI]

    Pointcheval, David

    New Blind Signatures Equivalent to Factorization (Extended Abstract) David Pointcheval Jacques Stern Abstract In this paper, we present new blind signature schemes based on the factorization problem. They are the first blind sig- nature schemes proved secure relatively to factorization. By security, we mean

  18. Semi-Blind Image Restoration via Mumford-Shah Regularization

    E-Print Network [OSTI]

    Sochen, Nir

    Semi-Blind Image Restoration via Mumford-Shah Regularization L. Bar N. Sochen N. Kiryati School. The proposed variational method integrates semi-blind image deconvolution (paramet- ric blur is in the unified treatment of the semi-blind restoration and segmentation problems, the important special case

  19. Blind Source Separation and Independent Component Analysis: Seungjin Choi

    E-Print Network [OSTI]

    Cichocki, Andrzej

    REVIEW Blind Source Separation and Independent Component Analysis: A Review Seungjin Choi, sylee}@kaist.ac.kr (Submitted on October 20, 2004) Abstract - Blind source separation (BSS meaningful coding or blind source estimation. The key issue is to find a such transformation or coding

  20. Efficient Blind Search: Optimal Power of Detection under Computational Cost

    E-Print Network [OSTI]

    Rice, John

    Efficient Blind Search: Optimal Power of Detection under Computational Cost Constraints Nicolai a blind search through a vast number of hypotheses to detect objects of interest. The number of hypotheses to test can be in the billions. A naive blind search over every single hypothesis would be far too costly

  1. New Blind Steganalysis and its Implications Miroslav Goljan

    E-Print Network [OSTI]

    Fridrich, Jessica

    New Blind Steganalysis and its Implications Miroslav Goljan , Jessica Fridrich, and Taras Holotyak The contribution of this paper is two-fold. First, we describe an improved version of a blind steganalysis method previously proposed by Holotyak et al.1 and compare it to current state-of-the-art blind steganalyzers

  2. BLIND DECONVOLUTION WITH MINIMUM RENYI'S ENTROPY Deniz Erdogmus1

    E-Print Network [OSTI]

    Slatton, Clint

    BLIND DECONVOLUTION WITH MINIMUM RENYI'S ENTROPY Deniz Erdogmus1 , Jose C. Principe1 , Luis Vielva2-mail: [deniz , principe]@cnel.ufl.edu, luis@dicom.unican.es ABSTRACT Blind techniques attract the attention, from communications to control systems. Blind deconvolution is a problem that has been investigated

  3. November 3, 2011 Grant Updates Support System for the Blind

    E-Print Network [OSTI]

    Hardy, Christopher R.

    Exchange November 3, 2011 1 Grant Updates Support System for the Blind Millersville is creating a one-of-a-kind support system for students on campus who are blind or vision-impaired thanks to a grant from the Susquehanna Foundation for the Blind (SFB). SFB matched a $25,000 grant from the Bank of New

  4. Blind Spectral-GMM Estimation for Underdetermined Instantaneous Audio Source

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Spectral-GMM Estimation for Underdetermined Instantaneous Audio Source Separation Simon.ozerov@telecom-paristech.fr Abstract. The underdetermined blind audio source separation prob- lem is often addressed in the time. Other approaches which are not blind assume a more structured model, like the Spectral Gaussian Mixture

  5. Blind Separation of Filtered Sources Using State-Space Approach

    E-Print Network [OSTI]

    Cichocki, Andrzej

    Blind Separation of Filtered Sources Using State-Space Approach Liqing Zhang and Andrzej Cichockiy to multichannel blind separation/generalized deconvolution, assuming that both mixing and demixing models are described by stable linear state-space sys- tems. We decompose the blind separation problem into two pro

  6. Blind Source Separation and the Analysis of Microarray Data

    E-Print Network [OSTI]

    Torrésani, Bruno

    1 Blind Source Separation and the Analysis of Microarray Data P. Chiappetta, M.C. Roubaud, B. Torr expression data, based upon blind source separation techniques. This approach exploits higher order validates the proposed approach. Keywords gene expression data, blind source separation, independent

  7. BLIND RECOGNITION OF LINEAR SPACE TIME BLOCK CODES Vincent Choqueuse

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND RECOGNITION OF LINEAR SPACE TIME BLOCK CODES Vincent Choqueuse E3 I2 , EA 3876, ENSIETA 2 6165, UBO 6, avenue le Gorgeu, 29200 Brest Cedex 3 FRANCE ABSTRACT The blind recognition. In this paper, we investigate the problem of the blind recognition of Linear Space-Time Block Codes (STBC

  8. Variational Bayesian Blind and Semiblind Channel Estimation

    E-Print Network [OSTI]

    Gesbert, David

    elaborate the details for the case of MIMO OFDM systems. I. INTRODUCTION Blind and semiblind channel, SFR , Orange, STEricsson, Cisco, BMW Group , SAP, Monaco Telecom and Symantec. The research reported herein has also been partially supported by the European FP7 NoE NewCom++ and FET project CROWN

  9. Lattice-based Blind Signatures Markus Ruckert

    E-Print Network [OSTI]

    assumptions change with the leap in computing power that quantum computers will provide. There are only a few exponentiation and lattice problems remain hard for quantum and subexponential-time adversaries. Generally. Keywords. Blind signatures, post-quantum, lattices, provable security, leakage resilience This work

  10. 1 Addressing Blindness via Cell Phones

    E-Print Network [OSTI]

    -evaluation eye diagnostic tool that attaches to a cell phone and uses a light-scattering technique to scan1 Addressing Blindness via Cell Phones 2 Welcome Letter 3 15 Years of SDM 4 Product Requirements for Contemporary Challenges > Using Systems Thinking to Fuel High-Velocity Organizations > Applying Systems

  11. Blind Pilot Decontamination Ralf R. Mller

    E-Print Network [OSTI]

    Müller, Ralf R.

    Blind Pilot Decontamination Ralf R. Müller Institute for Digital Communications Friedrich and interference. Ralf Müller (FAU) 14-Mar-2013 2 / 16 #12;Introduction Pilot (De-)Contamination For T transmit estimation. Ralf Müller (FAU) 14-Mar-2013 3 / 16 #12;Introduction Pilot (De-)Contamination For T transmit

  12. OASIS System for Organizing, Annotating, and Serving Information to Students without Sight

    E-Print Network [OSTI]

    Candan, Selçuk

    1 OASIS System for Organizing, Annotating, and Serving Information to Students without Sight Qing Luisa Sapino Comp. Sci. and Eng. Dept. Arizona State University Tempe, AZ 85287 ABSTRACT OASIS topic using a digital library environment. OASIS brings the relevant digital content closer to users who

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

    E-Print Network [OSTI]

    Zhong, Lin

    Vision: 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 General Terms Algorithms, Design, Human Factors, Languages, Performance, Security Keywords Camera, cloud

  14. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 50, NO. 10, OCTOBER 2004 2389 Large-Sample Performance of Blind and Group-Blind

    E-Print Network [OSTI]

    Xu, Zhengyuan "Daniel"

    -Sample Performance of Blind and Group-Blind Multiuser Detectors: A Perturbation Perspective Zhengyuan Xu, Senior Member, IEEE, and Xiaodong Wang, Member, IEEE Abstract--In blind and group-blind multiuser detection, dif detectors is studied for either flat or esti- mated multipath channels: direct-matrix-inversion (DMI) blind

  15. Overcoming efficiency constraints on blind quantum computation

    E-Print Network [OSTI]

    Carlos A. Pérez-Delgado; Joseph F. Fitzsimons

    2014-11-18T23:59:59.000Z

    Blind quantum computation allows a user to delegate a computation to an untrusted server while keeping the computation hidden. A number of recent works have sought to establish bounds on the communication requirements necessary to implement blind computation, and a bound based on the no-programming theorem of Nielsen and Chuang has emerged as a natural limiting factor. Here we show that this constraints only hold in limited scenarios and show how to overcome it using a method based on iterated gate-teleportations. We present our results as a family of protocols, with varying degrees of computational-ability requirements on the client. Certain protocols in this family exponentially outperform previously known schemes in terms of total communication. The approach presented here can be adapted to other distributed computing protocols to reduce communication requirements.

  16. Data Association and Bullet Tracking Algorithms for the Fight Sight Experiment

    SciTech Connect (OSTI)

    Breitfeller, E; Roberts, R

    2005-10-07T23:59:59.000Z

    Previous LLNL investigators developed a bullet and projectile tracking system over a decade ago. Renewed interest in the technology has spawned research that culminated in a live-fire experiment, called Fight Sight, in September 2005. The experiment was more complex than previous LLNL bullet tracking experiments in that it included multiple shooters with simultaneous fire, new sensor-shooter geometries, large amounts of optical clutter, and greatly increased sensor-shooter distances. This presentation describes the data association and tracking algorithms for the Fight Sight experiment. Image processing applied to the imagery yields a sequence of bullet features which are input to a data association routine. The data association routine matches features with existing tracks, or initializes new tracks as needed. A Kalman filter is used to smooth and extrapolate existing tracks. The Kalman filter is also used to back-track bullets to their point of origin, thereby revealing the location of the shooter. It also provides an error ellipse for each shooter, quantifying the uncertainty of shooter location. In addition to describing the data association and tracking algorithms, several examples from the Fight Sight experiment are also presented.

  17. PARENT Quick Blind Round-Robin Test Report

    SciTech Connect (OSTI)

    Braatz, Brett G.; Heasler, Patrick G.; Meyer, Ryan M.

    2014-09-30T23:59:59.000Z

    The U.S. Nuclear Regulatory Commission has established the Program to Assess the Reliability of Emerging Nondestructive Techniques (PARENT) whose goal is to investigate the effectiveness of current and novel nondestructive examination procedures and techniques to find flaws in nickel-alloy welds and base materials. This is to be done by conducting a series of open and blind international round-robin tests on a set of piping components that include large-bore dissimilar metal welds, small-bore dissimilar metal welds, and bottom-mounted instrumentation penetration welds. The blind testing is being conducted in two segments, one is called Quick-Blind and the other is called Blind. The Quick-Blind testing and destructive analysis of the test blocks has been completed. This report describes the four Quick-Blind test blocks used, summarizes their destructive analysis, gives an overview of the nondestructive evaluation (NDE) techniques applied, provides an analysis inspection data, and presents the conclusions drawn.

  18. Tangent length and sight distance effects on accident rates at horizontal curves on two-lane rural highways

    E-Print Network [OSTI]

    Fink, Kenneth Lee

    1993-01-01T23:59:59.000Z

    TANGENT LENGTH AND SIGHT DISTANCE EFFECTS ON ACCIDENT RATES AT HORIZONTAL CURVES ON TWO-LANE RURAL HIGHWAYS A Thesis by KENNETH LEE FINK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1993 Major Subject: Civil Engineering TANGENT LENGTH AND SIGHT DISTANCE EFFECTS ON ACCIDENT RATES AT HORIZONTAL CURVES ON TWO-LANE RURAL HIGHWAYS A Thesis hy KENNETH LEE FINK Submitted to Texas...

  19. Device-Independent Verifiable Blind Quantum Computation

    E-Print Network [OSTI]

    Michal Hajdušek; Carlos A. Pérez-Delgado; Joseph F. Fitzsimons

    2015-02-09T23:59:59.000Z

    As progress on experimental quantum processors continues to advance, the problem of verifying the correct operation of such devices is becoming a pressing concern. Although recent progress has resulted in several protocols which can verify the output of a quantum computation performed by entangled but non-communicating processors, the overhead for such schemes is prohibitive, scaling at least as the 22nd power of the number of gates. We present a new approach based on a combination of verified blind quantum computation and Bell state self-testing. This approach has significantly reduced overhead, with resources scaling as a quartic polynomial in the number of gates.

  20. Blind Geothermal System | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass ConversionsSouthby 2022 |Bleckley County, Georgia: EnergyMulti-phaseBlind

  1. BLIND HARMONIC ADAPTIVE DECOMPOSITION APPLIED TO SUPERVISED SOURCE Benoit Fuentes, Roland Badeau, Gal Richard

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND HARMONIC ADAPTIVE DECOMPOSITION APPLIED TO SUPERVISED SOURCE SEPARATION Benoit Fuentes through an algorithm called Blind Harmonic Adaptive Decomposition (BHAD). This algorithm provides [1]. However, performing this task in a completely blind way remains challenging, basically due

  2. Blind source separation of convolutive mixtures of non circular linearly modulated signals with unknown baud

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind source separation of convolutive mixtures of non circular linearly modulated signals addresses the problem of blind separation of convolutive mix- tures of BPSK and circular linearly modulated theoretical statements. Keywords: Blind source separation, Convolutive mixture, Constant Modulus Algorithm

  3. Blind and Deaf to Acceptance: The Role of Self-Esteem in Capitalizing on Social Acceptance

    E-Print Network [OSTI]

    Luerssen, Anna Maud

    2013-01-01T23:59:59.000Z

    Blind and Deaf to Acceptance: The Role of Self-Esteem inGlaser Spring 2013 Abstract Blind and Deaf to Acceptance:never have been possible. Blind and Deaf to Acceptance: The

  4. BLIND IDENTIFICATION OF UNDERDETERMINED MIXTURES BASED ON THE HEXACOVARIANCE AND HIGHER-ORDER CYCLOSTATIONARITY

    E-Print Network [OSTI]

    Boyer, Edmond

    BLIND IDENTIFICATION OF UNDERDETERMINED MIXTURES BASED ON THE HEXACOVARIANCE AND HIGHER consider the problem of blind identification of un- derdetermined mixtures in a cyclostationary context hexacovariance. Two blind identification algorithms based on the proposed estima- tor are considered

  5. ML BLIND CHANNEL ESTIMATION IN OFDM USING CYCLOSTATIONARITY AND SPECTRAL FACTORIZATION

    E-Print Network [OSTI]

    Quadeer, Ahmed Abdul

    ML BLIND CHANNEL ESTIMATION IN OFDM USING CYCLOSTATIONARITY AND SPECTRAL FACTORIZATION A. A is vital in OFDM systems for efficient data recovery. In this paper, we propose a blind algorithm. Index Terms-- Blind channel estimation, Maximum likelihood estimation, Spectral factorization

  6. Blind and non-blind source detection in WMAP 5-year maps

    E-Print Network [OSTI]

    M. Massardi; M. López-Caniego; J. González-Nuevo; D. Herranz; G. De Zotti; J. L. Sanz

    2008-10-14T23:59:59.000Z

    We have analyzed the efficiency in source detection and flux density estimation of blind and non-blind detection techniques exploiting the MHW2 filter applied to the Wilkinson Microwave Anisotropy Probe (WMAP) 5-year maps. A comparison with the AT20G Bright Source Sample (Massardi et al. 2008), with a completeness limit of 0.5 Jy and accurate flux measurements at 20 GHz, close to the lowest frequency of WMAP maps, has allowed us to assess the completeness and the reliability of the samples detected with the two approaches, as well as the accuracy of flux and error estimates, and their variations across the sky. The uncertainties on flux estimates given by our procedure turned out to be about a factor of 2 lower than the rms differences with AT20G measurements, consistent with the smoothing of the fluctuation field yielded by map filtering. Flux estimates were found to be essentially unbiased except that, close to the detection limit, a substantial fraction of fluxes are found to be inflated by the contribution of underlying positive fluctuations. This is consistent with expectations for the Eddington bias associated to the true errors on flux density estimates. The blind and non-blind approaches are found to be complementary: each of them allows the detection of sources missed by the other. Combining results of the two methods on the WMAP 5-year maps we have expanded the non-blindly generated New Extragalactic WMAP Point Source (NEWPS) catalogue (Lopez-Caniego et al. 2007) that was based on WMAP 3-year maps. After having removed the probably spurious objects not identified with known radio sources, the new version of the NEWPS catalogue, NEWPS_5yr comprises 484 sources detected with a signal-to-noise ratio SNR>5.

  7. BROADBAND ANALOG OPTO-ELECTRONIC BLIND SOURCE SEPARATION

    E-Print Network [OSTI]

    Popovic, Zoya

    -electronic blind source separation Thesis directed by Professor Zoya Popovi´c This thesis addresses the problemBROADBAND ANALOG OPTO-ELECTRONIC BLIND SOURCE SEPARATION by PAUL CARSON SMITH B.E., University of Colorado, 2000 M.S., University of Colorado, 2000 A thesis submitted to the Faculty of the Graduate School

  8. Blind Channel Identification for the Emitter Location Problem

    E-Print Network [OSTI]

    Fowler, Mark

    a thesis entitled "Blind Channel Identification for the Emitter Location Problem: A Least Square ApproachBlind Channel Identification for the Emitter Location Problem: A Least Square Approach BY Cheung C. Chau B.S.E.E., Binghamton University, 2000 Thesis Submitted in Partial Fulfillment of the Requirements

  9. Multiple Blind Watermarking in the DRM-Context

    E-Print Network [OSTI]

    Uhl, Andreas

    Multiple Blind Watermarking in the DRM-Context #12;#12;Multiple Blind Watermarking in the DRM have helped me throughout my master thesis in one or the other way. I want to thank my supervisor Andreas Uhl who guided me through my master thesis and supported me much more than a supervisor has to. I

  10. Evaluation of Multimodal Graphs for Blind People , STEPHEN BREWSTER

    E-Print Network [OSTI]

    Williamson, John

    sense on people's fingers. Tactile diagrams exist in many forms and they mainly differEvaluation of Multimodal Graphs for Blind People WAI YU 1 , STEPHEN BREWSTER 2 1 Virtual visualisation system and its evaluations. This system is designed to improve blind and visually impaired people

  11. Blind Channel Estimation for Orthogonal STBC in MISO Systems

    E-Print Network [OSTI]

    Adve, Raviraj

    1 Blind Channel Estimation for Orthogonal STBC in MISO Systems Elzbieta Beres, and Raviraj Adve-input single-output (MISO) systems, with specific focus on Alamouti's code for two transmit antennas of the received signal. Unlike previous blind estimation schemes for MISO systems, the proposed algorithm

  12. BLIND RECEIVERS FOR MISO COMMUNICATION SYSTEMS USING A NONLINEAR PRECODER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND RECEIVERS FOR MISO COMMUNICATION SYSTEMS USING A NONLINEAR PRECODER Alain Y. Kibangou GIPSA.Kibangou@ujf-grenoble.fr ABSTRACT In this paper, we propose two blind decoding approaches for multi-input single-output (MISO of simulations. 1. INTRODUCTION Multi-input Single Output (MISO) communication channel modelling occurs when

  13. Blind Calibration of Networks of Sensors: Theory and Algorithms

    E-Print Network [OSTI]

    Nowak, Robert

    Blind Calibration of Networks of Sensors: Theory and Algorithms Laura Balzano University@ece.wisc.edu May 2007 Abstract This chapter considers the problem of blindly calibrating sensor response using, calibration errors are one of the major obstacles to the practical use of sensor networks [3], because

  14. Blind analysis results of the TWIST experiment

    E-Print Network [OSTI]

    A. Hillairet; R. Bayes; J. F. Bueno; Y. I. Davydov; P. Depommier; W. Faszer; M. C. Fujiwara; C. A. Gagliardi; A. Gaponenko; A. Grossheim; D. R. Gill; P. Gumplinger; M. D. Hasinoff; R. S. Henderson; J. Hu; D. D. Koetke; R. P. MacDonald; G. M. Marshall; E. W. Mathie; R. E. Mischke; K. Olchanski; A. Olin; R. Openshaw; J. -M. Poutissou; R. Poutissou; V. Selivanov; G. Sheffer; B. Shin; T. D. S. Stanislaus; R. Tacik; R. E. Tribble

    2010-06-04T23:59:59.000Z

    The TRIUMF Weak Interaction Symmetry Test (TWIST) experiment was designed to test the standard model at high precision in the purely leptonic decay of polarized muons. A general four-fermion interaction model is used to describe the muon decay. TWIST measures three of the four muon decay parameters of this model, $\\rho$, $\\delta$ and $P_{\\mu}^{\\pi} \\xi$, from the shape of the momentum-angle spectrum. The results of this model independent approach are compared to the standard model predictions and used to constrain new physics. Our collaboration has finalized the blind analysis of the final experimental data taken in 2006 and 2007. This analysis mostly reached our goal of a precision of an order of magnitude improvement over the pre-TWIST measurements.

  15. Verification for measurement-only blind quantum computing

    E-Print Network [OSTI]

    Tomoyuki Morimae

    2014-06-19T23:59:59.000Z

    Blind quantum computing is a new secure quantum computing protocol where a client who does not have any sophisticated quantum technlogy can delegate her quantum computing to a server without leaking any privacy. It is known that a client who has only a measurement device can perform blind quantum computing [T. Morimae and K. Fujii, Phys. Rev. A {\\bf87}, 050301(R) (2013)]. It has been an open problem whether the protocol can enjoy the verification, i.e., the ability of client to check the correctness of the computing. In this paper, we propose a protocol of verification for the measurement-only blind quantum computing.

  16. Bayesian analysis of joint strong gravitational lensing and dynamic galactic mass in SLACS: evidence of line-of-sight contamination

    E-Print Network [OSTI]

    Antonio C. C. Guimarães; Laerte Sodré Jr.

    2007-06-21T23:59:59.000Z

    We readdress the calculation of the mass of early-type galaxies using strong gravitational lensing and stellar dynamics. Our sample comprises 27 galaxies in the Sloan Lens ACS (SLACS) Survey. Comparing the mass estimates from these two independent methods in a Bayesian framework, we find evidence of significant line-of-sight mass contamination. Assuming a power-law mass distribution, the best fit density profile is given by $\\rho \\propto r^{-1.69\\pm0.05}$. We show that neglecting the line-of-sight mass contamination produces an overestimate of the mass attributed to the lens-galaxy by the lensing method, which introduces a bias in favor of a SIS profile when using the joint lensing and dynamic analysis to determine the slope of the density profile. We suggest that the line-of-sight contamination could also be important for other astrophysical and cosmological uses of joint lensing and dynamical measurements.

  17. Low complexity concurrent constant modulus algorithm and soft decision directed scheme for blind

    E-Print Network [OSTI]

    Chen, Sheng

    Low complexity concurrent constant modulus algorithm and soft decision directed scheme for blind-directed (DD) scheme provides a state-of-the-art low-complexity blind equalisation technique for high of the standard CMA blind equaliser, this concurrent CMA and DD blind equaliser achieves a dramatic improvement

  18. Fair Blind Signatures without Random Oracles Georg Fuchsbauer and Damien Vergnaud

    E-Print Network [OSTI]

    Boyer, Edmond

    Fair Blind Signatures without Random Oracles Georg Fuchsbauer and Damien Vergnaud ´Ecole normale. A fair blind signature is a blind signature with revocable anonymity and unlinkability, i requested it. In this paper we first revisit the security model for fair blind signatures given

  19. Semi-Blind Spatial Equalisation for MIMO Channels with Quadrature Amplitude Modulation

    E-Print Network [OSTI]

    Chen, Sheng

    Semi-Blind Spatial Equalisation for MIMO Channels with Quadrature Amplitude Modulation S. Chen, L 1BJ, UK E-mails: {sqc,lh,wy07r}@ecs.soton.ac.uk Abstract-- Semi-blind spatial equalisation-directed blind algorithm is then employed to adapt the spatial equalisers. This semi- blind scheme has a very

  20. CRLB for Blind Timing Offset Estimation of a Two-Channel

    E-Print Network [OSTI]

    Levy, Bernard C.

    CRLB for Blind Timing Offset Estimation of a Two-Channel Time-Interleaved A/D Converter Steve Huang Engineering University of California at Davis #12;1 Outline Motivation Blind Calibration Method Large signals or blindly. Blind methods do not lower ADC throughput and can adjust to changes online. Asilomar

  1. Semi-blind channel estimation schemes based on a cooperative form of the cross relation criterion

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    Semi-blind channel estimation schemes based on a cooperative form of the cross relation criterion on the cross-relation criterion that has been extensively studied in the (semi-) blind literature. As shown. In a wireless environment, as in cooperative communications, semi-blind techniques which combine a blind

  2. Combining Blind Equalization with Constant Modulus Properties Alle-Jan van der Veen and Antonio Trindade

    E-Print Network [OSTI]

    van der Veen, Alle-Jan

    Combining Blind Equalization with Constant Modulus Properties Alle-Jan van der Veen and Ant, The Netherlands Abstract This paper presents an approach to multi-user blind space- time equalizationexploiting that asks for both a blind equaliza- tion and a blind source separation based on the modulation properties

  3. TO APPEAR IN JOURNAL OF COMMUNICATIONS AND NETWORKS, 1999 1 An Unsupervised Hybrid Network for Blind

    E-Print Network [OSTI]

    Choi, Seungjin

    for Blind Separation of Independent Non­Gaussian Source Signals in Multipath Environment Seungjin CHOI source signals blindly. A simple criterion for multichannel blind deconvo­ lution and an associated performance of the proposed method. Keywords---Blind signal separation, Hebbian/anti­Hebbian learning

  4. Blind Channel Estimation in OFDM Systems by Relying on the Gaussian Assumption of the Input

    E-Print Network [OSTI]

    Quadeer, Ahmed Abdul

    Blind Channel Estimation in OFDM Systems by Relying on the Gaussian Assumption of the Input T. Y methods rely on some form of training which reduces the useful data rate. Here instead we blindly estimate maxima of the ML objective function. One is the blind Genetic algorithm and the other is the semi-blind

  5. A (SEMI)-BLIND EQUALIZATION TECHNIQUE FOR WIRELESS BURST TRANSMISSION SYSTEMS

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    A (SEMI)-BLIND EQUALIZATION TECHNIQUE FOR WIRELESS BURST TRANSMISSION SYSTEMS Athanasios A a parametric method for estimating the unknown channel impulse response (CIR) in a blind or semi-blind manner channel output samples is correspond- ingly reduced. The proposed CIR estimation technique can be blind

  6. BLIND TESTS OF REFRACTION MICROTREMOR ANALYSIS AGAINST SYNTHETICS AND BOREHOLE DATA

    E-Print Network [OSTI]

    BLIND TESTS OF REFRACTION MICROTREMOR ANALYSIS AGAINST SYNTHETICS AND BOREHOLE DATA Karalyn Heath1 the synthetics in a blind test, following standard ReMi procedures. Between the models and the blind results, we% for Z0. For the second application, we completed blind analyses of refraction microtremor data taken

  7. Blind Source Recovery: Some Implementation and Performance Issues Khurram Waheed and Fathi M. Salam

    E-Print Network [OSTI]

    Salem, Fathi M.

    Blind Source Recovery: Some Implementation and Performance Issues Khurram Waheed and Fathi M. Salam of our proposed algorithms for Blind source Recovery based on constrained optimization using the state in various practical problems. 1: Introduction Blind Source Recovery (BSR), or Multi-channel Blind

  8. Single line-of-sight dual energy backlighter for mix width experiments

    SciTech Connect (OSTI)

    Baker, K. L., E-mail: baker7@llnl.gov; Glendinning, S. G.; Martinez, D.; Dittrich, T. R.; MacLaren, S. A.; Felker, S.; Seugling, R.; Doane, D.; Wallace, R. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Guymer, T. M.; Moore, A. S. [AWE, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom); Whiting, N.; Sorce, C. [Laboratory for Laser Energetics, Rochester, New York 14627 (United States)

    2014-11-15T23:59:59.000Z

    We present a diagnostic technique used to spatially multiplex two x-ray radiographs of an object onto a detector along a single line-of-sight. This technique uses a thin, <2 ?m, cosputtered backlighter target to simultaneously produce both Ni and Zn He{sub ?} emission. A Ni picket fence filter, 500 ?m wide bars and troughs, is then placed in front of the detector to pass only the Ni He{sub ?} emission in the bar region and both energies in the trough region thereby spatially multiplexing the two radiographs on a single image. Initial experimental results testing the backlighter spectrum are presented along with simulated images showing the calculated radiographic images though the nickel picket fence filter which are used to measure the mix width in an accelerated nickel foam.

  9. Language processing in the occipital cortex of congenitally blind

    E-Print Network [OSTI]

    Bedny, Marina

    Humans are thought to have evolved brain regions in the left frontal and temporal cortex that are uniquely capable of language processing. However, congenitally blind individuals also activate the visual cortex in some ...

  10. Underdetermined Blind Source Separation Based on Subspace Representation

    E-Print Network [OSTI]

    Kim, Sanggyun

    This paper considers the problem of blindly separating sub- and super-Gaussian sources from underdetermined mixtures. The underlying sources are assumed to be composed of two orthogonal components: one lying in the rowspace ...

  11. INTRODUCTION What is research, but a blind date with knowledge.

    E-Print Network [OSTI]

    Minnesota, University of

    CHAPTER 1 INTRODUCTION What is research, but a blind date with knowledge. -Will Henry The purpose for this thesis. Rationale for Study Through many generations of experimentation and theory-building, physics has

  12. Critical Writing Assessment Rubric (Blind Review) Revised 2010

    E-Print Network [OSTI]

    Wilson, Mark A.

    W Critical Writing Assessment Rubric (Blind Review) Revised 2010 Paper Code: ___________ Date Reviewed: ___________ Reader: ___________ (Initials) 1. Thesis The essay contains a clear and relevant thesis. 0 ___ 1 ___ 2 ___ 3 ___ 4 ___ 2. Organization The paragraphs are logically ordered within

  13. Usable Gestures for Blind People: Understanding Preference and Performance

    E-Print Network [OSTI]

    Anderson, Richard

    Usable Gestures for Blind People: Understanding Preference and Performance Shaun K. Kane, Jacob provided that copies are not made or distributed for profit or commercial advantage and that copies bear

  14. Multi-Vehicle Path Planning for Non-Line of Sight Communication Tom Schouwenaars, Eric Feron, and Jonathan How

    E-Print Network [OSTI]

    How, Jonathan P.

    line of sight communication to its ground station is lost. Relay helicopters are therefore introduced formulations to model nonconvex obstacles more efficiently. Simulation, hardware in the loop, and flight test by introducing a set of relay helicopters. Indirect communication with the ground station can then be established

  15. Correction to "Blind Source Separation Using Renyi's Mutual Information" Abstract: The paper entitled, "Blind Source Separation Using Renyi's Mutual Information," was

    E-Print Network [OSTI]

    Slatton, Clint

    Correction to "Blind Source Separation Using Renyi's Mutual Information" Abstract: The paper entitled, "Blind Source Separation Using Renyi's Mutual Information," was found to contain an incorrect of Florida Gainesville, FL 32611, USA The authors of the paper entitled, "Blind Source Separation Using Renyi

  16. Abstract. Blind or deaf? Surprisingly, a small but noticeable minority, 17%, opted for blindness. Another 6% were indifferent. For these individuals (23% of the sample), the loss of the aesthetic

    E-Print Network [OSTI]

    Biederman, Irving

    Abstract. Blind or deaf? Surprisingly, a small but noticeable minority, 17%, opted for blindness of vision compared to those who opted for being blind. What predicts the preference for being blind blind (1 strongest preference) or deaf (7 strongest preference), as well as their preferences

  17. Three Blind Men and the Elephant

    SciTech Connect (OSTI)

    Long, J S

    2007-02-13T23:59:59.000Z

    Just like the blind men in the popular story of perceiving the elephant, the three major constituencies participating in the energy debate have greatly different perceptions of the problem. The constituency that is worried about climate change believes the energy problem is caused by profligate use of fossil fuel that has dramatically changed our atmosphere. The energy security group sees dangerous reliance on foreign sources of oil increasingly held by countries hostile to the US. The economic vitality group sees high energy prices and their effect on the economy and our life-style. Just like the blind men, each of the three constituencies perceives a different problem. And just as with the blind men, while each perspective is right as a piece of the elephant, it takes all the perspectives together to actually solve the problem. Environmentalists focus on solutions responding to the scientific consensus that greenhouse gases are creating rapid climate change. The tipping point has come: it is now a consensus position among scientists the global warming is being affected by anthropogenic activity to 90% certainty according to the last IPCC report. Although they still struggle with the prediction of how much global temperatures will rise if we do nothing--is it 5 deg or 10 under BAU? This group believes that we cannot afford to take a chance because we get only one chance. We can not afford to do this kind of experiment with the Earth. Any choice which decreases our CO{sub 2} footprint is favored, even if it means a decrease in standard of living. The energy security constituency sees the geo-politics of oil becoming increasingly dire. They look at oil money being used to fund anti-American activities of groups such as the Wahabis in Saudi Arabia, Hezbollah in Lebanon and the infamous Al Qaeda. They quip that the Iraq war is the first war where we are paying for both sides. They note Iran and the Shia throughout the Middle East seeing the possibility of controlling 2/3 of the world's oil. They see oil and gas being used by Russia to exert political power using the gas tap and Hugo Chavez in Venezuela clearly anti-American and now a virtual dictator who controls 15% of our oil imports. Conflicts in Nigeria over oil wealth and corruption affected our oil supply. Countries such as China are at best unwilling to join political action against countries such as Sudan that supply them oil, and at worst, selling them arms in order to cement their relationships with respect to importing oil. This security constituency favors ending our vulnerability by ending our ''addiction to foreign oil''. This group thinks that there is no domestic source of energy that is bad. They will be happy to see our corn turned into ethanol; our coal turned into liquid fuel for transportation. No matter that the price of tortillas doubles in Mexico, we expand corn farming at the expense of the environment, our tanks and pipes in gas stations corrode and leak, or we make liquid fuel from coal, thus increasing the carbon footprint by 30% per unit of energy. The economic vitality group sees increasing international demand for oil occurring simultaneously with a peaking supply of light sweet crude. They see an oil market where higher prices drive more production of oil which is heavier and more sour (supply follows demand). However, fast growth in world-wide demand increases even faster and prices will go up. For example, China adds 10,000 cars per month, and there is an uncanny correlation between the price of oil and the amount of oil imported by China. The security contingent also worries about reliability of supply as affected by pipeline leaks in Alaska or hurricanes or potential terrorism. This constituency thinks the problem is one of capacity and favors solutions that will increase oil production, reservoirs, pipelines and refineries. They believe that the energy system will be determined by the market and want solutions that favor investment in capacity. What the environmentalists don't seem to get is climate change by itself will fail to gather b

  18. Universal Single-Server Blind Quantum Computation for Classical Client

    E-Print Network [OSTI]

    Hai-Ru Xu; Bang-Hai Wang

    2014-11-12T23:59:59.000Z

    Blind quantum computation allows a client without enough quantum technologies to delegate her quantum computation to quantum server, while keeping her input, output and algorithm secure. In this paper, we propose a universal single-server and classical-client blind quantum computation protocol based on entanglement swapping technology. In our protocol, the client interface with only one server and the only ability of the client requires is to get particles from trusted center and forward them to the server. Moreover, the protocol can be modified to make client completely classical by improving the ability of the trusted center. Numbers of blind quantum computation protocols have been presented in recent years, including single-, double- and triple-server protocols. In the single-server protocol, client needs to prepare single qubits. Though client can be classical in the double-server protocol, the two servers, who share Bell state from trusted center, are not allowed to communicate with each other. Recently, the triple-server protocol solves the noncommunication problem. Three servers, however, make the implementation of the computation sophisticated and unrealistic. Since it is impossible for blind quantum computation with only classical client and single server, blind quantum computation may work in the "Cloud + E-commerce" style in the future. Our protocol might become a key ingredient for real-life application in the first generation of quantum computations.

  19. A Double-Blind, Placebo-Controlled Trial of Oral Human Immunoglobulin for Gastrointestinal Dysfunction in Children with Autistic Disorder

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    y ORIGINAL PAPER A Double-Blind, Placebo-Controlled Trial ofautism. A randomized, double-blind, pla- cebo-controlled,results, a double- blind, placebo-controlled trial was

  20. Five blind men and the elephant: what can the NASA Aura ozone measurements tell us about stratosphere-troposphere exchange?

    E-Print Network [OSTI]

    Tang, Q.; Prather, M. J

    2012-01-01T23:59:59.000Z

    Chemistry and Physics Five blind men and the elephant: whaton the parable of the five blind men and the elephant, wheremeasurements are the five “blind men” who are touching the “

  1. Blind System Identification KARIM ABED-MERAIM, WANZHI QIU, MEMBER, IEEE, AND YINGBO HUA, SENIOR MEMBER, IEEE

    E-Print Network [OSTI]

    Hua, Yingbo

    Blind System Identification KARIM ABED-MERAIM, WANZHI QIU, MEMBER, IEEE, AND YINGBO HUA, SENIOR MEMBER, IEEE Blind system identification (BSI) is a fundamental signal processing technology aimed applications such as mobile communications, speech reverberation cancellation, and blind image restoration

  2. Alabama Institute for Deaf and Blind Biodiesel Project Green

    SciTech Connect (OSTI)

    Edmiston, Jessica L

    2012-09-28T23:59:59.000Z

    Through extensive collaboration, Alabama Institute for Deaf and Blind (AIDB) is Alabama's first educational entity to initiate a biodiesel public education, student training and production program, Project Green. With state and national replication potential, Project Green benefits local businesses and city infrastructures within a 120-mile radius; provides alternative education to Alabama school systems and to schools for the deaf and blind in Appalachian States; trains students with sensory and/or multiple disabilities in the acquisition and production of biodiesel; and educates the external public on alternative fuels benefits.

  3. Blind decomposition of multispectral(RGB) image using sparse component analysis (SCA): clustering and Lp

    E-Print Network [OSTI]

    Matijevic, Domagoj

    1 Blind decomposition of multispectral(RGB) image using sparse component analysis (SCA): clustering to the blind decomposition of low-dimensional multi-spectral (RGB) images will be presented. We give static

  4. Tactile perception recruits functionally related visual areas in the late-blind

    E-Print Network [OSTI]

    Hansen, Peter

    Tactile perception recruits functionally related visual areas in the late-blind Manu S. Goyala Award from Universities UK. Received 26 April 2006; accepted16 May 2006 When blind people touch Braille discrimination in the blind. We tested this hypothesis in a functional magnetic resonance imaging study designed

  5. Blind Identification of Over-complete MixturEs of sources (BIOME)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Identification of Over-complete MixturEs of sources (BIOME) Laurent Albera(1,2) , Anne Ferr Abstract The problem of Blind Identification of linear mixtures of independent random pro- cesses is known words: Blind Source Separation, Independent Component Analysis, Tensor, High Order Statistics, Joint

  6. ML BLIND CHANNEL ESTIMATION IN OFDM USING CYCLOSTATIONARITY AND SPECTRAL FACTORIZATION

    E-Print Network [OSTI]

    Al-Naffouri, Tareq Y.

    ML BLIND CHANNEL ESTIMATION IN OFDM USING CYCLOSTATIONARITY AND SPECTRAL FACTORIZATION A. A for efficient data recovery. In this paper, we propose a blind algorithm for channel estimation that is based. The Genetic algorithm is then used to fine tune the obtained solution. Index Terms-- Blind channel estimation

  7. Blind Equalization via Approximate Maximum Likelihood Source Seungjin CHOI x1 and Andrzej CICHOCKI y

    E-Print Network [OSTI]

    Choi, Seungjin

    Blind Equalization via Approximate Maximum Likelihood Source Separation Seungjin CHOI x1, RIKEN 2-1 Hirosawa, Wako-shi Saitama 351-0198, JAPAN Abstract Blind equalization of single input multiple output (SIMO) FIR channels can be refor- mulated as the problem of blind source separation

  8. BLIND SOURCE SEPARATION OF CONVOLUTIVE AUDIO USING AN ADAPTIVE STEREO BASIS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND SOURCE SEPARATION OF CONVOLUTIVE AUDIO USING AN ADAPTIVE STEREO BASIS Maria G. Jafari.davies@ed.ac.uk ABSTRACT We consider the problem of convolutive blind source sep- aration of audio mixtures. We propose The convolutive blind audio source separation problem arises when an array of sensor microphones is placed

  9. TO APPEAR IN JOURNAL OF COMMUNICATIONS AND NETWORKS, 1999 1 An Unsupervised Hybrid Network for Blind

    E-Print Network [OSTI]

    Cichocki, Andrzej

    for Blind Separation of Independent Non-Gaussian Source Signals in Multipath Environment Seungjin CHOI by a linear memoryless feedforward network) which is able to recover multiple source signals blindly. A simple criterion for multichannel blind deconvo- lution and an associated learning algorithm are presented

  10. TAME-BLIND EXTENSION OF MORPHISMS OF TRUNCATED BARSOTTI-TATE GROUP SCHEMES

    E-Print Network [OSTI]

    TAME-BLIND EXTENSION OF MORPHISMS OF TRUNCATED BARSOTTI-TATE GROUP SCHEMES YUICHIRO HOSHI OCTOBER with perfect residue fields extend in a "tame-blind" fashion -- i.e., under a condition which is unaffected. The "tame-blindness" of our extension result al- lows one to verify the analogue of a result of Tate

  11. Developing a Real-Time Identify-and-Locate System for the Blind

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Developing a Real-Time Identify-and-Locate System for the Blind Gemstone Team Vision 1 , Bobby Bobo Lighthouse for the Blind 3 University of Maryland Institute for Advanced Computer Studies 4 University to the blind in the foreseeable future. But despite the rapid advances in computer hardware and vi- sion

  12. Blind Timing and Carrier Synchronization in Decode and Forward Cooperative Systems

    E-Print Network [OSTI]

    Durrani, Salman

    Blind Timing and Carrier Synchronization in Decode and Forward Cooperative Systems Ali A. Nasir for blind channel, timing and carrier offset estimation in a DF cooperative system with one source, M relays and one destination equipped with N antennas. In particular, we exploit blind source separation

  13. Blind Identification of the Scrambling Code of a Reverse Link CDMA2000 Transmission

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Identification of the Scrambling Code of a Reverse Link CDMA2000 Transmission Mathieu des by the femto BS. The femto BS has to estimate blindly the state of the scrambling code. An algorithm which performs a blind identification of the scrambling code of a CDMA2000 reverse link transmission is proposed

  14. Multichannel Blind Deconvolution of Non-minimum Phase Systems Using Information

    E-Print Network [OSTI]

    Vialatte, François

    1 Multichannel Blind Deconvolution of Non-minimum Phase Systems Using Information Backpropagation L;210 Multichannel Blind Deconvolution of Non-minimum Phase Systems Using Information Backpropagation L.-Q. Zhang, A- composition approach, for multichannel blind de- convolution of non-minimumphase systems. In 20] we has

  15. Blind students "see" math through touch. How would this work in a classroom?

    E-Print Network [OSTI]

    Webster III, Robert James

    · Blind students "see" math through touch. How would this work in a classroom? Student and Teacher Feedback Motivation The Promise of Haptics for Teaching Math to the Blind J. L. Gorlewicz and R. J. Webster://research.vuse.vanderbilt.edu/MEDLab/index.htm Nitinol tube under deformation After bending: no permanent deformation Grid/Point Study with Blind

  16. Online Blind Calibration of Non-Uniform Photodetectors: Application to Endomicroscopy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Online Blind Calibration of Non-Uniform Photodetectors: Application to Endomicroscopy Nicolas an original method for the online blind calibra- tion of non-uniform photodetectors. The disparity of a system akin to gradient- based surface recovery. From our blind calibration procedure, we design

  17. Blind CFO estimation for OFDM-IDMA system in Rayleigh fading multipath channel

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - 1 - Blind CFO estimation for OFDM-IDMA system in Rayleigh fading multipath channel Yasamine to adapt a method of blind CFO estimation, called CFO estimation-Syndrome Function Minimization (C- SFM show that, for high Eb/N0, the two systems have the same performance. Key words: Blind carrier

  18. Blind source separation in the presence of weak sources J.-P. Nadala

    E-Print Network [OSTI]

    Aires, Filipe

    Blind source separation in the presence of weak sources J.-P. Nadala , E. Korutchevab,*, F. Airesa" as compared to the other ones, the "weak" sources. We find that it is preferable to perform blind source simulations. 2000 Elsevier Science Ltd. All rights reserved. Keywords: Independent component analysis; Blind

  19. Blind Predictions of Local Protein Structure in CASP2 Targets Using the I-Sites Library

    E-Print Network [OSTI]

    Bystroff, Chris

    Blind Predictions of Local Protein Structure in CASP2 Targets Using the I-Sites Library Christopher ABSTRACT Blind predictions of the local structure of nine CASP2 targets were made using the I-sites library dataset to optimize the method may intro- duce a bias in favor of that set. Blind predictions of data

  20. BLIND CHANNEL SHORTENERS C. R. Johnson, Jr., R. K. Martin, J. M. Walsh,

    E-Print Network [OSTI]

    Klein, Andrew G.

    BLIND CHANNEL SHORTENERS C. R. Johnson, Jr., R. K. Martin, J. M. Walsh, A. G. Klein, C. E. Orlicki: Although blind, adaptive algorithms for equalization are widely studied, hitherto there has been little academic attention given to blind, adaptive algo- rithms for channel shortening. Channel shortening

  1. A Blind Multi-User MIMO Transceiver using Code Modulation in a Multipath Context

    E-Print Network [OSTI]

    A Blind Multi-User MIMO Transceiver using Code Modulation in a Multipath Context #3; Olivier| A deterministic blind equalizer for Multi- User Multiple Inout Multiple Output systemas (Multi-User MIMO systems techniques that use a cyclic pre#12;x. The results show that the proposed blind equalization method performs

  2. BLIND COMPENSATION OF NONLINEAR DISTORTIONS VIA SPARSITY RECOVERY Leonardo T. Duarte1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND COMPENSATION OF NONLINEAR DISTORTIONS VIA SPARSITY RECOVERY Leonardo T. Duarte1 , Ricardo.jutten@gipsa-lab.grenoble-inp.fr ABSTRACT In this work, we address the problem of compensating a non- linear memoryless system in a blind a representative set of experiments on synthetic data. Index Terms-- Blind compensation, nonlinear distortion

  3. Turkey Flat Site Effects Test Area The Turkey-Flat strong motion "blind"

    E-Print Network [OSTI]

    Oprsal, Ivo

    Turkey Flat Site Effects Test Area B B' A A' C C' The Turkey-Flat strong motion "blind" prediction experiment "Blind" Test Approach · Conduct high quality field and laboratory tests to characterize Geological Survey Turkey Flat, USA Site Effects Test Area: "Blind" Test of Predicted Ground Response

  4. BLIND SEPARATION OF UNCORRELATED SOURCES VIA PRINCIPAL COMPONENT ANALYSIS OF OBSERVATIONS

    E-Print Network [OSTI]

    Slatton, Clint

    BLIND SEPARATION OF UNCORRELATED SOURCES VIA PRINCIPAL COMPONENT ANALYSIS OF OBSERVATIONS, principe]@cnel.ufl.edu, luis@dicom.unican.es ABSTRACT A well-known fact in blind deconvolution) of the received signal. For blind source separation, however, a similar special case, equivalent to the situation

  5. Blind Identification of MIMO FIR Systems Driven by Quasi-Stationary Sources Using Second Order

    E-Print Network [OSTI]

    Reilly, James P.

    1 Blind Identification of MIMO FIR Systems Driven by Quasi-Stationary Sources Using Second Order This paper discusses a frequency domain method for blind identification of MIMO convolutive channels driven are presented to demonstrate the performance of the new algorithm1 . I. Introduction Blind identification

  6. ON BLIND CHANNEL IDENTIFICATION AND EQUALIZATION OVER GALOIS FIELDS Arie Yeredor

    E-Print Network [OSTI]

    Yeredor, Arie

    ON BLIND CHANNEL IDENTIFICATION AND EQUALIZATION OVER GALOIS FIELDS Arie Yeredor School of Electrical Engineering, Tel-Aviv University arie@eng.tau.ac.il ABSTRACT We consider the problem of blind the success rate of the proposed methods in simulation. Index Terms-- Blind Equalization; System

  7. BLIND MULTIUSER DETECTION AND INTERFERENCE CANCELLATION IN DSCDMA MOBILE RADIO SYSTEMS

    E-Print Network [OSTI]

    Huang, Yih-Fang

    BLIND MULTIUSER DETECTION AND INTERFERENCE CANCELLATION IN DS­CDMA MOBILE RADIO SYSTEMS Samir USA ABSTRACT This paper deals with blind adaptive multiuser detection and interference cancellation presents a two­stage blind adaptive receiver architecture which car­ ries out multiuser detection using

  8. IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 50, NO. 4, APRIL 2002 923 Adaptive Solution for Blind

    E-Print Network [OSTI]

    Nikolova, Mila

    IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 50, NO. 4, APRIL 2002 923 Adaptive Solution for Blind, and Mila Nikolova Abstract--A deterministic maximum likelihood (DML) ap- proach is presented for the blind of the recursive and adap- tive algorithm are presented. Index Terms--Adaptive algorithm, blind equalization, deter

  9. ADAPTIVE BLIND ESTIMATION OF SPARSE SIMO CHANNELS Abdeldjalil Assa-El-Bey1,3

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ADAPTIVE BLIND ESTIMATION OF SPARSE SIMO CHANNELS Abdeldjalil Aïssa-El-Bey1,3 , Karim Abed-Meraim2 on the adaptive identification of sparse SIMO channels in a blind context. More specifically, we propose different as follows : at first a blind approach based on the cross- relation criterion is derived for channel

  10. BLIND EQUALIZATION OF SIMO CHANNELS VIA SPATIO-TEMPORAL ANTI-HEBBIAN

    E-Print Network [OSTI]

    Cichocki, Andrzej

    BLIND EQUALIZATION OF SIMO CHANNELS VIA SPATIO-TEMPORAL ANTI-HEBBIAN LEARNING RULE Seungjin CHOIy distributed processing ap- proach to \\direct" blind equalization of Single Input Multiple Out- put (SIMO Blind equalization is an emerging eld of fundamental research for numer- ous applications in digital

  11. Blind Compensation of Nonlinear Distortions : Application to Source Separation of Post-Nonlinear

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Blind Compensation of Nonlinear Distortions : Application to Source Separation of Post of blind compensation of nonlinear distortions. Our approach relies on the assumption that the input approached is considered in the development of a two-stage method for blind source separation (BSS) in post

  12. MULTICHANNEL BLIND DECONVOLUTION OF ARBITRARY SIGNALS: ADAPTIVE ALGORITHMS AND STABILITY ANALYSIES

    E-Print Network [OSTI]

    Douglas, Scott C.

    MULTICHANNEL BLIND DECONVOLUTION OF ARBITRARY SIGNALS: ADAPTIVE ALGORITHMS AND STABILITY ANALYSIES for the multichannel blind deconvolution of arbitrary non-Gaussian source mixtures. Two of the algorithms are spa- tia-temporal extensions of recently-derived blind signal separation algorithms that combine kurta- sis-based contrast

  13. Blind Identification of the Uplink Scrambling Code Index of a WCDMA Transmission and Application

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Blind Identification of the Uplink Scrambling Code Index of a WCDMA Transmission and Application with the surrounding macro BSs. The femto BS has to estimate blindly this scrambling code index. An algorithm which performs a blind identification of the uplink scrambling code index of a WCDMA transmission is proposed

  14. RECURSIVE BLIND EQUALIZATION WITH AN OPTIMAL BOUNDING ELLIPSOID M. Pouliquen, M. Frikel, M. Denoual

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RECURSIVE BLIND EQUALIZATION WITH AN OPTIMAL BOUNDING ELLIPSOID ALGORITHM M. Pouliquen, M. Frikel.pouliquen@unicaen.fr ABSTRACT In this paper, we present an algorithm for blind equalization i.e. equalization without training some simulations are performed. Index Terms-- Blind Equalization, FIR equalizer. 1. INTRODUCTION

  15. ADAPTIVE BLIND DECONVOLUTION OF LINEAR CHANNELS USING RENYI'S ENTROPY WITH PARZEN WINDOW ESTIMATION

    E-Print Network [OSTI]

    Slatton, Clint

    ADAPTIVE BLIND DECONVOLUTION OF LINEAR CHANNELS USING RENYI'S ENTROPY WITH PARZEN WINDOW ESTIMATION of Cantabria, Santander, Spain Abstract. Blind deconvolution of linear channels is a fundamental signal, as a criterion for blind deconvolution of linear channels. Comparisons between maximum and minimum entropy

  16. COMBINING BLIND SOURCE EXTRACTION WITH JOINT APPROXIMATE DIAGONALIZATION: THIN ALGORITHMS FOR ICA

    E-Print Network [OSTI]

    Cichocki, Andrzej

    COMBINING BLIND SOURCE EXTRACTION WITH JOINT APPROXIMATE DIAGONALIZATION: THIN ALGORITHMS FOR ICA contrast function is proposed for the blind signal extraction of a subset of the indepen- dent components- tion techniques with the flexibility of the methods for blind signal extraction. Its maximization leads

  17. BLIND BACKSCATTERING EXPERIMENTAL DATA COLLECTED IN THE FIELD AND AN APPROXIMATELY GLOBALLY CONVERGENT INVERSE ALGORITHM

    E-Print Network [OSTI]

    1 BLIND BACKSCATTERING EXPERIMENTAL DATA COLLECTED IN THE FIELD AND AN APPROXIMATELY GLOBALLY of targets from blind experimental data. The data were collected in the field by the Forward Looking Radar process. The UNCC/ChalmersGU team has worked only with the most challenging case of blind experimen- tal

  18. Multichannel Blind Deconvolution of the Short-Exposure Astronomical Images Filip Sroubek, Jan Flusser, Tomas Suk

    E-Print Network [OSTI]

    Sroubek, Filip

    Multichannel Blind Deconvolution of the Short-Exposure Astronomical Images Filip Sroubek, Jan@asu.cas.cz Abstract In this paper we present a new multichannel blind deconvolution method based on so-called subspace single channel ones. In comparison with earlier multichannel blind deconvolution techniques the subspace

  19. A Thesis for the Degree of Master of Science Provably Secure Threshold Blind

    E-Print Network [OSTI]

    Kim, Kwangjo

    A Thesis for the Degree of Master of Science Provably Secure Threshold Blind Signature Scheme Using Secure Threshold Blind Signature Scheme Using Pairings #12;Provably Secure Threshold Blind Signature and Communications University A thesis submitted to the faculty of Information and Commu- nications University

  20. Universal Blind Quantum Computing with Weak Coherent Pulses

    E-Print Network [OSTI]

    Vedran Dunjko; Elham Kashefi; Anthony Leverrier

    2012-05-16T23:59:59.000Z

    The recently proposed Universal Blind Quantum Computation (UBQC) protocol allows a client to perform an arbitrary quantum computation on a remote server such that perfect privacy is guaranteed if the client is capable of producing random separable single qubit states. While from a theoretical point of view, this arguably constitutes the lowest possible quantum requirement, from a pragmatic point of view, generation of random single qubits which can be sent along long distances without loss is quite challenging and can never be achieved perfectly. In analogy to the concept of approximate security developed for other cryptographic protocols, we introduce here the concept of approximate blindness for UBQC, allowing us to characterize the robustness of the protocol to possible imperfections. Following this, we present a remote blind single qubit preparation protocol, by which a client with access to realistic quantum devices (such as coherent laser light) can in a delegated fashion prepare quantum states arbitrarily close to perfect random single qubit states. We finally prove that access to coherent states is sufficient to efficiently achieve approximate blindness with arbitrary small security parameter.

  1. Blind source separation using spatial and temporal priors

    E-Print Network [OSTI]

    Roberts, Stephen

    #12;Blind source separation using spatial and temporal priors W D Addison Balliol University of Oxford A thesis submitted for the degree of Doctor of Philosophy Trinity 2009 2 #12;3 #12 for providing such fine accommodation in Oxford and to my wife for her incredible patience while this thesis

  2. Optimal Blind Data and Channel Estimation With Diversity

    E-Print Network [OSTI]

    Petersen, Brent

    Optimal Blind Data and Channel Estimation With Diversity by David P. Williams BSc hons, University of Bath U.K., 1983 A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master and Computer Engineering This thesis is accepted _______________________________________________. Dean

  3. Robust wavelet estimation and blind deconvolution of noisy surface seismics

    E-Print Network [OSTI]

    van der Baan, Mirko

    Robust wavelet estimation and blind deconvolution of noisy surface seismics Mirko Van der Baan1 if the bandwidth of the seismic wavelet is narrow to very narrow; that is, if the wavelet bandwidth is similar to its principal frequency. The main problem is to estimate the phase of the wavelet with sufficient

  4. Avoiding the Detector Blinding Attack on Quantum Cryptography

    E-Print Network [OSTI]

    Z L Yuan; J F Dynes; A J Shields

    2010-09-30T23:59:59.000Z

    We show the detector blinding attack by Lydersen et al [1] will be ineffective on most single photon avalanche photodiodes (APDs) and certainly ineffective on any detectors that are operated correctly. The attack is only successful if a redundant resistor is included in series with the APD, or if the detector discrimination levels are set inappropriately.

  5. Blind Deconvolution and Structured Matrix Computations with Applications to Array

    E-Print Network [OSTI]

    Plemmons, Robert J.

    for the reconstruction of high-resolution images from multiple under sam- pled images of a scene that is obtained1 Blind Deconvolution and Structured Matrix Computations with Applications to Array Imaging Michael .................................................... 21 1.7 Application: High-resolution Image Reconstruction ...................... 23 1.8 Concluding

  6. ASTROMETRY.NET: BLIND ASTROMETRIC CALIBRATION OF ARBITRARY ASTRONOMICAL IMAGES

    E-Print Network [OSTI]

    Masci, Frank

    ASTROMETRY.NET: BLIND ASTROMETRIC CALIBRATION OF ARBITRARY ASTRONOMICAL IMAGES This article has CALIBRATION OF ARBITRARY ASTRONOMICAL IMAGES Dustin Lang1,2,7 , David W. Hogg3,4 , Keir Mierle1,5 , Michael Blanton3 , and Sam Roweis1,5,6 1 Department of Computer Science, University of Toronto, 6 King's College

  7. A Reliable method for Blind Channel Identification using Burst Data

    E-Print Network [OSTI]

    Raphaeli, Dan

    1 A Reliable method for Blind Channel Identification using Burst Data Dan Raphaeli, Senior Member Output (MISO) FIR channels with nonminimum phase. The approach is based on mini- mizing a cost function of identification success when consider- ing statistical channels, its ability to obtain reliable channel estimates

  8. Front Vehicle Blind Spot Translucentization Based on Augmented Reality

    E-Print Network [OSTI]

    Wang, Yuan-Fang

    Front Vehicle Blind Spot Translucentization Based on Augmented Reality Che-Tsung Lin, Yu-Chen Lin--Recently, WAVE/DSRC has become an attrac- tive technology for vehicular safety applications. Vehicles with WAVE/DSRC devices can communicate with their neighboring vehicles to exchange information to achieve collaborative

  9. Iterative blind separation of Gaussian data of unknown order

    E-Print Network [OSTI]

    Mueller, Amy, 1980-

    2003-01-01T23:59:59.000Z

    A method for blind separation of noisy jointly Gaussian multivariate signals X is presented, where X = AP + N, X is an observed set of vectors, A is the mixing matrix, P is the unknown signal matrix, and N is white noise. ...

  10. AN INDEPENDENT MEASUREMENT OF THE INCIDENCE OF Mg II ABSORBERS ALONG GAMMA-RAY BURST SIGHT LINES: THE END OF THE MYSTERY?

    E-Print Network [OSTI]

    Cucchiara, A.

    In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absorption systems intervening the sight lines to gamma-ray bursts (GRBs) relative to the incidence of such absorption along ...

  11. Localization and Manipulation of Small Parts Using GelSight Tactile Rui Li, Robert Platt Jr., Wenzhen Yuan*, Andreas ten Pas*, Nathan Roscup*, Mandayam A. Srinivasan,

    E-Print Network [OSTI]

    Gabrieli, John

    Localization and Manipulation of Small Parts Using GelSight Tactile Sensing Rui Li, Robert Platt Jr Laboratory at MIT, and Mandayam A. Srinivasan is with MIT Touch Lab. Robert Platt Jr., Andreas ten Pas

  12. Gamma-ray blind beta particle probe

    DOE Patents [OSTI]

    Weisenberger, Andrew G. (Grafton, VA)

    2001-01-01T23:59:59.000Z

    An intra-operative beta particle probe is provided by placing a suitable photomultiplier tube (PMT), micro channel plate (MCP) or other electron multiplier device within a vacuum housing equipped with: 1) an appropriate beta particle permeable window; and 2) electron detection circuitry. Beta particles emitted in the immediate vicinity of the probe window will be received by the electron multiplier device and amplified to produce a detectable signal. Such a device is useful as a gamma insensitive, intra-operative, beta particle probe in surgeries where the patient has been injected with a beta emitting radiopharmaceutical. The method of use of such a device is also described, as is a position sensitive such device.

  13. Regarding the Line-of-Sight Baryonic Acoustic Feature in the Sloan Digital Sky Survey and Baryon Oscillation Spectroscopic Survey Luminous Red Galaxy Samples

    E-Print Network [OSTI]

    Eyal A. Kazin; Michael R. Blanton; Roman Scoccimarro; Cameron K. McBride; Andreas A. Berlind

    2010-04-13T23:59:59.000Z

    We analyze the line-of-sight baryonic acoustic feature in the two-point correlation function {\\xi} of the Sloan Digital Sky Survey (SDSS) luminous red galaxy (LRG) sample (0.16 < z < 0.47). By defining a narrow line-of-sight region, rp < 5.5 Mpc/h, where rp is the transverse separation component, we measure a strong excess of clustering at ~ 110 Mpc/h, as previously reported in the literature. We also test these results in an alternative coordinate system, by defining the line-of-sight as {\\theta} < 3{\\deg}, where {\\theta} is the opening angle. This clustering excess appears much stronger than the feature in the better-measured monopole. A fiducial {\\Lambda}CDM non-linear model in redshift-space predicts a much weaker signature. We use realistic mock catalogs to model the expected signal and noise. We find that the line-of-sight measurements can be explained well by our mocks as well as by a featureless {\\xi} = 0. We conclude that there is no convincing evidence that the strong clustering measurement is the line-of-sight baryonic acoustic feature. We also evaluate how detectable such a signal would be in the upcoming Baryon Oscillation Spectroscopic Survey LRG volume (BOSS). Mock LRG catalogs (z < 0.6) suggest that: (i) the narrow line- of-sight cylinder and cone defined above probably will not reveal a detectable acoustic feature in BOSS; (ii) a clustering measurement as high as that in the current sample can be ruled out (or confirmed) at a high confidence level using a BOSS-sized data set; and (iii) an analysis with wider angular cuts, which provide better signal-to-noise ratios, can nevertheless be used to compare line-of-sight and transverse distances, and thereby constrain the expansion rate H(z) and diameter distance DA(z).

  14. A concept to collect neutron and x-ray images on the same line of sight at NIF

    SciTech Connect (OSTI)

    Merrill, F. E., E-mail: fmerrill@lanl.gov; Danly, C. R.; Grim, G. P.; Volegov, P. L.; Wilde, C. H. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Izumi, N.; Jedlovec, D.; Fittinghoff, D. N.; Pak, A.; Park, H.-S. [Livermore National Laboratory, Livermore, California 94551 (United States)

    2014-11-15T23:59:59.000Z

    Neutron and x-ray images are collected at the National Ignition Facility (NIF) to measure the size and shape of inertial confinement fusion implosions. The x-ray images provide a measure of the size and shape of the hot region of the deuterium-tritium fuel while the neutron images provide a measure of the size and shape of the burning plasma. Although these two types of images are collected simultaneously, they are not collected along the same line of sight (LOS). One 14 MeV neutron image is collected on the NIF equator, and two x-ray images are collected along the polar axis and nearly perpendicular to the neutron imaging line of sight on the equator. Both measurements use pinhole apertures to form the images, but existing x-ray imaging provides time-resolved measurements while the neutron images are time-integrated. Detailed comparisons of the x-ray and neutron images can provide information on the fuel assembly, but these studies have been limited because the implosions are not azimuthally symmetric and the images are collected along different LOS. We have developed a conceptual design of a time-integrated x-ray imaging system that could be added to the existing neutron imaging LOS. This new system would allow these detailed studies, providing important information on the fuel assembly of future implosions. Here we present this conceptual design and the expected performance characteristics.

  15. Semi-Blind Gradient-Newton CMA and SDD Algorithm for MIMO Space-Time Equalisation

    E-Print Network [OSTI]

    Chen, Sheng

    Semi-Blind Gradient-Newton CMA and SDD Algorithm for MIMO Space-Time Equalisation S. Chen, L. HanzoBJ, UK. E-mails: {sqc, lh, htc1e08}@ecs.soton.ac.uk Abstract-- Semi-blind space-time equalisation-directed scheme is then applied to adapt the STE. The proposed semi-blind adaptive STE is capable of converging

  16. Double blinding-attack on entanglement-based quantum key distribution protocols

    E-Print Network [OSTI]

    Guillaume Adenier; Irina Basieva; Andrei Yu. Khrennikov; Masanori Ohya; Noboru Watanabe

    2011-06-14T23:59:59.000Z

    We propose a double blinding-attack on entangled-based quantum key distribution protocols. The principle of the attack is the same as in existing blinding attack except that instead of blinding the detectors on one side only, Eve is blinding the detectors of both Alice and Bob. In the BBM92 protocol, the attack allows Eve to get a full knowledge of the key and remain undetected even if Alice and Bob are using 100% efficient detectors. The attack can be easily extended to Ekert protocol, with an efficiency as high as 85.3%.

  17. Summary. Mature nests of the Neotropical myrmicine ant Blepharidatta conops are short blind vertical cylinders, in

    E-Print Network [OSTI]

    Villemant, Claire

    Summary. Mature nests of the Neotropical myrmicine ant Blepharidatta conops are short blind of intranidal phragmosis in ants. The ergatoid queen of Blepharidatta conops (Formicidae, Myrmicinae) blocks

  18. Energy efficient louver and blind. Technical progress report for Quarter 1, 1996

    SciTech Connect (OSTI)

    Khajavi, S.

    1996-04-19T23:59:59.000Z

    This report decribes designs for energy efficient louvers and blinds for windows. The design includes silver and aluminium coated v-grooves.

  19. Concentric wrench for blind access opening in a turbine

    DOE Patents [OSTI]

    Laurer, Kurt Neal (Saratoga Spring, NY); Drlik, Gary Joseph (Fairfield, OH); Gibler, Edward Eugene (Cincinnati, OH)

    2001-01-01T23:59:59.000Z

    The concentric wrench includes an outer tube having flats at one end and a gripping surface at an opposite end. An inner tube has interior flats at one end and a gripping surface at its opposite end. With the inner and outer tubes disposed about a pressure transmitting conduit, the tubes may be inserted into a blind access opening in the outer turbine casing to engage the flats of the tubes against hex nuts of an internal fitting. By relatively rotating the tubes using the externally exposed gripping surfaces, the threaded connection between the parts of the fitting bearing the respective hex nuts can be tightened or loosened.

  20. A Hadron Blind Detector for the PHENIX Experiment

    E-Print Network [OSTI]

    I. Ravinovich

    2005-10-07T23:59:59.000Z

    A novel Hadron Blind Detector (HBD) has been developed for an upgrade of the PHENIX experiment at RHIC. The HBD will allow a precise measurement of electron-positron pairs from the decay of the light vector mesons and the low-mass pair continuum in heavy-ion collisions. The detector consists of a 50 cm long radiator filled with pure CF4 and directly coupled in a windowless configuration to a triple Gas Electron Multiplier (GEM) detector with a CsI photocathode evaporated on the top face of the first GEM foil.

  1. A blind algorithm for recovering articulator positions from acoustics

    SciTech Connect (OSTI)

    Hogden, John E [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    MIMICRI is a signal-processing algorithm that has been shown to blindly infer and invert memoryless nonlinear functions of unobservable bandlimited signals, such as the mapping from the unobservable positions of the speech articulators to observable speech sounds. We review results of using MIMICRI on toy problems and on human speech data. We note that MIMICRI requires that the user specify two parameters: the dimensionality and pass-band of the unobservable signals. We show how to use cross-validation to help estimate the passband. An unexpected consequence of this work is that it helps separate signals with overlapping frequency bands.

  2. The Rhetorics of Color-Blind Racism in Racefail 09

    E-Print Network [OSTI]

    Reid, Robin Anne

    2010-09-01T23:59:59.000Z

    The Rhetorics of Color-Blind Racism in Racefail 09 Presented at: Amazing, Fantastic, Weird: Science Fiction Studies in Texas Symposium April 15, 2010 Eduardo Bonilla-Silva Schema Anything But Race: It?s class, not race ? I am not a racist, but...) BEAR LAKE Length Words in text 28809 7331 Sentences in text 1991 463 Text Complexity Av. Word Length 4.6 4.69 Av. Sentence Length 14.4 15.8 Lexical Density Lexemes per sentence 7.58 8.36 Lexemes % of text 52.43 52...

  3. The Effects of Naltrexone on Subjective Response to Methamphetamine in a Clinical Sample: A Double-Blind, Placebo-Controlled Laboratory Study.

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    BL, Kim SW (2010). A double-blind, placebo-controlled studyin a Clinical Sample: A Double-Blind, Placebo-Controlledin a Clinical Sample: A Double-Blind, Placebo-Controlled

  4. No-reference image quality assessment and blind deblurring with sharpness metrics exploiting Fourier phase information

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , total variation, Fourier transform, random phase noise, no-reference image quality assessment, imageNo-reference image quality assessment and blind deblurring with sharpness metrics exploiting information of an image to achieve quality assessment, edge detection, and, more recently, blind deblurring

  5. Principles for the Design of Auditory Interfaces to Present Complex Information to Blind People

    E-Print Network [OSTI]

    Stevens, Robert

    Principles for the Design of Auditory Interfaces to Present Complex Information to Blind People Computer Interaction Group, The Department of Computer Science. January 1996 #12;Abstract This thesis proposes a set of principles to aid the design of user interfaces that enable blind users to read complex

  6. M.Sc in Telecommunications Reduced-complexity semi-blind

    E-Print Network [OSTI]

    M.Sc in Telecommunications Reduced-complexity semi-blind channel estimation for LTE Downlink Niccol of channel capacity. Semi-blind channel estimators address this problem making use of both pilot of data has to be processed to produce the estimate. The aim of this thesis is investigating low

  7. The Blind Men and the Elephant: Piecing Together Hadoop for Diagnosis

    E-Print Network [OSTI]

    The Blind Men and the Elephant: Piecing Together Hadoop for Diagnosis Xinghao Pan CMU-CS-09-135 May 2009 School of Computer Science Carnegie Mellon University Pittsburgh, PA 15213 Thesis Committee multiple viewpoints. We present a "Blind Men and the Elephant" (BliMeE) framework in which we exploit

  8. Blind Equalization and Identification for Differential Space-time Modulated Communication Systems

    E-Print Network [OSTI]

    Schniter, Philip

    Blind Equalization and Identification for Differential Space-time Modulated Communication Systems A Thesis Presented in Partial Fulfillment of the Requirements for the Degree Master of Science of blind identification and equalization for MIMO system with frequency- selective fading channels. We

  9. Radio self-interference cancellation by transmit beamforming, all-analog cancellation and blind digital tuning$

    E-Print Network [OSTI]

    Hua, Yingbo

    Radio self-interference cancellation by transmit beamforming, all-analog cancellation and blind September 2014 Accepted 17 September 2014 Available online 28 September 2014 Keywords: Radio self-interference cancellation Full-duplex radio Transmit beamforming Receive beamforming All-analog cancellation Blind digital

  10. Semi-BlindImage Restoration Based on TelltaleWatermarking Deepa Kundur and DimitriosHatzinakos

    E-Print Network [OSTI]

    Kundur, Deepa

    in the embedded stream. The altered stream is used for semi-blind restoration to undo tampering. It is assumedSemi-BlindImage Restoration Based on TelltaleWatermarking ~ AUTHENTIC IMAGE Deepa Kundur the restorationof locally degraded images based on telltalefragilewatermarking. In our approach a data stream culled

  11. Turbo-BLAST with Semi-Blind Co-Channel Interference Cancellation in Multicell MIMO Systems

    E-Print Network [OSTI]

    Dai, Huaiyu

    Turbo-BLAST with Semi-Blind Co-Channel Interference Cancellation in Multicell MIMO Systems Vivek to obtain in practice. In this paper we first exploit the turbo principle to enhance an effective blind detection method based on multiuser kurtosis (MUK) maximization, thus coined as turbo-MUK. In turbo

  12. A FAST ASYMPTOTICALLY EFFICIENT ALGORITHM FOR BLIND SEPARATION OF A LINEAR MIXTURE OF BLOCK-WISE STATIONARY AUTOREGRESSIVE PROCESSES

    E-Print Network [OSTI]

    Yeredor, Arie

    diagonalization, blind source separation, autoregressiveprocesses, second-orderstatis- tics 1. INTRODUCTION Blind to This work was supported by Ministry of Education, Youth and Sports of the Czech Republic through the project

  13. A FAST ASYMPTOTICALLY EFFICIENT ALGORITHM FOR BLIND SEPARATION OF A LINEAR MIXTURE OF BLOCK-WISE STATIONARY AUTOREGRESSIVE PROCESSES

    E-Print Network [OSTI]

    Yeredor, Arie

    diagonalization, blind source separation, autoregressiveprocesses, second-orderstatis- tics 1. INTRODUCTION Blind by Ministry of Education, Youth and Sports of the Czech Republic through the project 1M0572 and by Grant

  14. No end in sight for nuclear squabble The decision on a site for a controversial nuclear fusion project has been delayed

    E-Print Network [OSTI]

    No end in sight for nuclear squabble The decision on a site for a controversial nuclear fusion Japanese village Rokkasho-mura. Japan has said that if no agreement is reached it would be prepared. Canada pulled out of talks altogether in December. Opinions are polarised as to whether or not nuclear

  15. Blind Joint Maximum Likelihood Channel Estimation and Data Detection for Single-Input Multiple-Output Systems

    E-Print Network [OSTI]

    Chen, Sheng

    Blind Joint Maximum Likelihood Channel Estimation and Data Detection for Single-Input Multiple of Southampton, Southampton SO17 1BJ, U.K. Abstract--A blind adaptive scheme is proposed for joint maximum. A simulation example is used to demon- strate the effectiveness of this joint ML optimization scheme for blind

  16. The Blind Ones and the Matter of the Beast (Adopted from Idries Shah's Tales of the Dervishes. 1967)

    E-Print Network [OSTI]

    O'Laughlin, Jay

    The Blind Ones and the Matter of the Beast (Adopted from Idries Shah's Tales of the Dervishes. 1967) Beyond Ghor (Afghanistan) there was a city. All its inhabitants were blind. A king with his entourage to understand and see this great beast, and some sightless from among this blind community ran like fools

  17. PARTIALLY BLIND DEBLURRING OF BARCODE FROM OUT-OF-FOCUS BLUR YIFEI LOU, ERNIE ESSER, HONGKAI ZHAO AND JACK XIN

    E-Print Network [OSTI]

    Xin, Jack

    PARTIALLY BLIND DEBLURRING OF BARCODE FROM OUT-OF-FOCUS BLUR YIFEI LOU, ERNIE ESSER, HONGKAI ZHAO in the application of barcode reconstruction. We propose a partially blind deblurring method when partial knowledge that the forward model is physically realistic and our partially blind deblurring method can yield good

  18. Blind Polynomial Channel Estimation for OFDM Y. H. Zhang, W.-S. Lu, and T. A. Gulliver

    E-Print Network [OSTI]

    Lu, Wu-Sheng

    Blind Polynomial Channel Estimation for OFDM Systems Y. H. Zhang, W.-S. Lu, and T. A. Gulliver data rates. Characteristics of the transmitted signal can be employed for blind channel identification. In this paper, we propose a blind polynomial channel estimation algorithm using noncircular second

  19. BLIND RT60 ESTIMATION ROBUST ACROSS ROOM SIZES AND SOURCE DISTANCES Baldwin Dumortier1,2,3

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND RT60 ESTIMATION ROBUST ACROSS ROOM SIZES AND SOURCE DISTANCES Baldwin Dumortier1 be blindly es- timated from a speech or music signal. Current methods often implicitly assume sound sources. This paper features two contributions. Firstly, we propose a blind RT60 estimation method

  20. Light stops, blind spots, and isospin violation in the MSSM

    E-Print Network [OSTI]

    Crivellin, Andreas; Procura, Massimiliano; Tunstall, Lewis C

    2015-01-01T23:59:59.000Z

    In the framework of the MSSM, we examine several simplified models where only a few superpartners are light. This allows us to study WIMP-nucleus scattering in terms of a handful of MSSM parameters and thereby scrutinize their impact on dark matter direct-detection experiments. Focusing on spin-independent WIMP-nucleon scattering, we derive simplified, analytic expressions for the Wilson coefficients associated with Higgs and squark exchange. We utilize these results to study the complementarity of constraints due to direct-detection, flavor, and collider experiments. We also identify parameter configurations that produce (almost) vanishing cross sections. In the proximity of these so-called blind spots, the amount of isospin violation is found to be much larger than typically expected in the MSSM. This feature is a generic property of parameter regions where cross sections are suppressed, and highlights the importance of a careful analysis of the nucleon couplings and the associated hadronic uncertainties. T...

  1. Hadron Blind Detector for the PHENIX Experiment at RHIC

    E-Print Network [OSTI]

    A. Milov

    2006-09-11T23:59:59.000Z

    The PHENIX collaboration has designed a conceptually new Hadron Blind Detector (HBD) for electron identification in high density hadron environment. The HBD will identify low momentum electron-positron pairs to reduce the combinatorial background in the mass region below 1 GeV/c^2. The HBD shall be installed in PHENIX during the 2007 physics run. The HBD is a windowless proximity focusing Cherenkov detector with a radiator length of 50 cm, CsI photocathode and three layers of Gas Electron Multipliers (GEM) for gas amplification. Pure CF_4 serves both as a radiator and as a detector gas. The radiation budget of the device is less than 3% of a radiation length.

  2. Robustness and device independence of verifiable blind quantum computing

    E-Print Network [OSTI]

    Alexandru Gheorghiu; Elham Kashefi; Petros Wallden

    2015-02-09T23:59:59.000Z

    Recent advances in theoretical and experimental quantum computing brings us closer to scalable quantum computing devices. This lead researchers to develop protocols for verifying the correct functionality of quantum operations. In this paper we address key challenges to make quantum verification protocols applicable to experimental implementations. We prove the robustness of the single server verification protocol of Fitzsimons and Kashefi (2012) which is based on universal blind quantum computing. The robustness of this protocol makes possible its composition with the device-independent protocol of Reichardt, Unger and Vazirani (2013). The new composite protocol inherits the device independence from Reichardt, Unger and Vazirani protocol while it leads to a lower round complexity for the verification of entangled quantum servers scenario. Finally, we give a fault tolerant version of the Fitzsimons and Kashefi protocol which suggests that the composite protocol can also be made fault tolerant.

  3. Blind Separation of Noisy Multivariate Data Using Second-Order Statistics: Remote-Sensing Applications

    E-Print Network [OSTI]

    Mueller, Amy V.

    In this paper a second-order method for blind source separation of noisy instantaneous linear mixtures is presented for the case where the signal order k is unknown. Its performance advantages are illustrated by simulations ...

  4. Blind calibration of timing skew in time-interleaved analog-to-digital converters

    E-Print Network [OSTI]

    Divi, Vijay

    The performance of time-interleaved analog-to-digital converters is often significantly degraded by timing mismatch errors. We develop methods for performing blind calibration of such converters, i.e., for estimating the ...

  5. Empowering design through non-visual process: The blind add new vision to innovation

    E-Print Network [OSTI]

    Magario, Rachel

    2012-05-31T23:59:59.000Z

    Magario, a blind student in the business and interaction design graduate programs at the University of Kansas, shows how she was able to overcome the mechanical limitations inherent in a visually oriented academic world. Magario explains how a project...

  6. Bayesian approaches to bilinear inverse problems involving spatial evidence : color constancy and blind image deconvolution

    E-Print Network [OSTI]

    Singh, Barun, 1982-

    2006-01-01T23:59:59.000Z

    This thesis examines two distinct but related problems in low-level computer vision: color constancy and blind-image deconvolution. The goal of the former is to separate the effect of global illumination from other properties ...

  7. chmod 660 facebook: Friendsourcing Social Network Sites First Author Name (Blank if Blind Review)

    E-Print Network [OSTI]

    chmod 660 facebook: Friendsourcing Social Network Sites First Author Name (Blank if Blind Review and to draw the users back into the site, we friendsource Facebook, enabling active contributors Facebook applications, friendsourcing, social computing, online participation ACM Classification Keywords H

  8. A Bias Removal Technique for Blind Source Separation With Noisy Measurements

    E-Print Network [OSTI]

    Douglas, Scott C.

    , Dallas, TX 75275 USA. Voice: (214) 768­3113. FAX: (214) 768­3573. Electronic mail address: douglas@seas.smu.edu. World Wide Web URL: http://www.seas.smu.edu/ee/. #12; 1 Introduction Blind source separation

  9. Security of the Quantum Key Distribution with Blind Polarization Bases against Impersonation Attack

    E-Print Network [OSTI]

    Won-Ho Kye; M. S. Kim

    2006-02-24T23:59:59.000Z

    In this paper, we briefly show how the quantum key distribution with blind polarization bases [Kye et al., Phys. Rev. Lett. 95, 040501 (2005)] can be made secure against the impersonation attack.

  10. Security against the Invisible Photon Attack for the Quantum Key Distribution with Blind Polarization Bases

    E-Print Network [OSTI]

    Won-Ho Kye; M. S. Kim

    2005-08-03T23:59:59.000Z

    In this paper, we briefly show how the quantum key distribution with blind polarization bases [Kye et al., Phys. Rev. Lett. 95, 040501 (2005)] can be made secure against the invisible photon attack.

  11. Blind Multilinear Identification Lek-Heng Lim and Pierre Comon, Fellow, IEEE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Blind Multilinear Identification Lek-Heng Lim and Pierre Comon, Fellow, IEEE Abstract--We discuss: Lek-Heng Lim is with the Computational and Ap- plied Mathematics Initiative, Department of Statistics

  12. A TIME-SHARING TERMINAL ADAPTED FOR USE BY BLIND COMPUTER USERS

    E-Print Network [OSTI]

    Fjelsted, Kevin

    2011-01-01T23:59:59.000Z

    microcomputer Since this terminal is still being I feel thatand efficient computer terminal will be developed. ThisLBL-8560 A TIME-SHARING TERMINAL ADAPTED FOR USE BY BLIND

  13. SEP Success Story: Alabama Institute for Deaf and Blind to Launch...

    Energy Savers [EERE]

    - 9:44am Addthis The Alabama Institute for Deaf and Blind is replacing almost 2,900 lights in 19 buildings across its campuses.| Photo courtesy of Alabama Institute for Deaf and...

  14. A New Gold Pan For The West- Discovering Blind Geothermal Systems...

    Open Energy Info (EERE)

    surveys has led to the discovery of at least two blind geothermal systems in Nevada, USA and has helped to define the spatial extent of thermal anomalies at two other...

  15. The epidemiology of low vision and blindness associated with trichiasis in southern Sudan

    E-Print Network [OSTI]

    Ngondi, Jeremiah; Reacher, Mark; Matthews, Fiona E; Ole-Sempele, Francis; Onsarigo, Alice; Matende, Ibrahim; Baba, Samson; Brayne, Carol; Emerson, Paul M

    2007-08-28T23:59:59.000Z

    Abstract Background We investigated vision status associated with trachomatous trichiasis (TT) and explored age-sex patterns of low vision and blindness associated with trichiasis in Mankien district of southern Sudan where trachoma prevention...

  16. Blind and pointed Sunyaev-Zel'dovich observations with the Arcminute Microkelvin Imager

    E-Print Network [OSTI]

    Shimwell, Timothy William

    2011-11-08T23:59:59.000Z

    Blind and Pointed Sunyaev-Zel’dovich Observations with the Arcminute Microkelvin Imager Timothy William Shimwell Cavendish Astrophysics and Churchill College University of Cambridge A dissertation submitted to the University of Cambridge... and use these to characterise the analysis. I then, for the first time, apply the analysis to data from the AMI blind cluster survey. I identify several previously unknown SZ decrements. Finally, I conduct pointed observations towards a high luminosity sub...

  17. Blind post-processing for the unbalanced BB84

    E-Print Network [OSTI]

    Satoshi Sunohara; Kiyoshi Tamaki; Nobuyuki Imoto

    2013-02-08T23:59:59.000Z

    For the realization of quantum key distribution, it is important to investigate its security based on a mathematical model that captures properties of the actual devices used by the legitimate users. Recently, Ferenczi, et. al. (Phys. Rev. A 86 042327 (2012)) pointed out potential influences that the losses in phase modulators and/or the unbalance in the transmission rate of beam splitters may have on the security of the phase-encoded BB84 and analyzed the security of this scheme, which is called the unbalanced BB84. In this paper, we ask whether blindly applying the post-processing of the balanced BB84 to the unbalanced BB84 would lead to an insecure key or not, and we conclude that we can safely distill a secure key even with this post-processing. It follows from our proof that as long as the unbalances are basis-independent, our conclusion holds even if the unbalances are unknown and fluctuate in time.

  18. Light stops, blind spots, and isospin violation in the MSSM

    E-Print Network [OSTI]

    Andreas Crivellin; Martin Hoferichter; Massimiliano Procura; Lewis C. Tunstall

    2015-03-11T23:59:59.000Z

    In the framework of the MSSM, we examine several simplified models where only a few superpartners are light. This allows us to study WIMP-nucleus scattering in terms of a handful of MSSM parameters and thereby scrutinize their impact on dark matter direct-detection experiments. Focusing on spin-independent WIMP-nucleon scattering, we derive simplified, analytic expressions for the Wilson coefficients associated with Higgs and squark exchange. We utilize these results to study the complementarity of constraints due to direct-detection, flavor, and collider experiments. We also identify parameter configurations that produce (almost) vanishing cross sections. In the proximity of these so-called blind spots, the amount of isospin violation is found to be much larger than typically expected in the MSSM. This feature is a generic property of parameter regions where cross sections are suppressed, and highlights the importance of a careful analysis of the nucleon couplings and the associated hadronic uncertainties. This becomes especially relevant once the increased sensitivity of future direct-detection experiments corners the MSSM into these regions of parameter space.

  19. Randomized, double-blind, placebo-controlled, crossover study of the efficacy and safety of lisdexamfetamine dimesylate in adults with attention-deficit/hyperactivity disorder: novel findings using a simulated adult workplace environment design

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    with ADHD: a randomized, double-blind, multicenter, placebo-et al. , Randomized, double-blind, placebo-con- trolled,Open Access Randomized, double-blind, placebo-controlled,

  20. Randomized, double-blind, placebo-controlled, crossover study of the efficacy and safety of lisdexamfetamine dimesylate in adults with attention-deficit/hyperactivity disorder: novel findings using a simulated adult workplace environment design

    E-Print Network [OSTI]

    Wigal, Timothy; Brams, Matthew; Gasior, Maria; Gao, Joseph; Squires, Liza; Giblin, John

    2010-01-01T23:59:59.000Z

    Ablon JS, Lapey K: A double-blind, crossover comparison ofin children with ADHD: a double-blind, placebo- controlled,randomized, double-blind, forced-dose, parallel-group study.

  1. A Low-Power Imager and Compression Algorithms for a Brain-Machine Visual Prosthesis for the Blind

    E-Print Network [OSTI]

    Sarpeshkar, Rahul

    A Low-Power Imager and Compression Algorithms for a Brain-Machine Visual Prosthesis for the Blind L-machine visual prosthesis for the blind where energy efficiency and power are of paramount importance a few filter basis coefficients. Keywords: Neural prosthesis, visual prosthesis, neural stimulation

  2. Bandwidth efficient channel estimation for multiple-input multiple-output (MIMO) wireless communication systems : a study of semi-blind and superimposed schemes

    E-Print Network [OSTI]

    Jagannatham, Aditya K.

    2007-01-01T23:59:59.000Z

    thesis to analyze the performance of the proposed esti- mation schemes. Whitening-Rotation Based Semi-Blind

  3. Solar-blind deep-UV band-pass filter (250 -350 nm) consisting of a metal nano-grid fabricated

    E-Print Network [OSTI]

    Solar-blind deep-UV band-pass filter (250 - 350 nm) consisting of a metal nano-grid fabricated, fabricated and demonstrated a solar-blind deep-UV pass filter, that has a measured optical performance, the filter offers simple yet effective and low cost solar-blind deep-UV detection at either a single device

  4. Semi-Blind Cancellation of IQ-Imbalances Matthias Hesse, Student Member, IEEE, Marko Mailand, Student Member, IEEE, Hans-Joachim Jentschel,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Semi-Blind Cancellation of IQ-Imbalances Matthias Hesse, Student Member, IEEE, Marko Mailand iterative blind source separation (IBSS) as well as information about the modulation scheme used (hence the term semi-blind). The novelty of our approach lies in the fact that we match the nonlinearity involved

  5. BLIND SYMBOL IDENTIFIABILITY OF ORTHOGONAL SPACE-TIME BLOCK CODES Wing-Kin Ma , P.C. Ching , T. N. Davidson, and B.-N. Vo

    E-Print Network [OSTI]

    Davidson, Tim

    BLIND SYMBOL IDENTIFIABILITY OF ORTHOGONAL SPACE-TIME BLOCK CODES Wing-Kin Ma , P.C. Ching , T. N Hamilton, Ont., Canada Parksville, Vic., Australia ABSTRACT This paper addresses the blind symbol. In many space-time communication schemes, achieving unique blind symbol identification requires certain

  6. Blind background prediction using a bifurcated analysis scheme J. Nix, J. Ma, G.N. Perdue, Y. Zheng, Y.W. Wah

    E-Print Network [OSTI]

    Blind background prediction using a bifurcated analysis scheme J. Nix, J. Ma, G.N. Perdue, Y. Zheng In this paper we describe a bifurcation analysis procedure for data driven background prediction in a blind. Our set of cuts defines a multidimensional signal region which we wish to keep blind. If two cuts show

  7. tel-00678050,version1-12Mar2012 tel-00678050,version1-12Mar2012

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The present thesis work is about haptic perception of raised-line pictures by blind and sighted subjects-12Mar2012 #12;3 Haptic perception of raised-line pictures by blind and sighted people Abstract

  8. Double-Blind Scores of an Object-Oriented Modeling Survey

    E-Print Network [OSTI]

    Waterloo, University of

    Double-Blind Scores of an Object-Oriented Modeling Survey by Raymond Sze Chun Yiu An essay declare that I am the sole author of this thesis. I authorize the University of Waterloo to lend this thesis to other institutions or individuals for the purpose of scholarly research. I further authorize

  9. DoubleBlind Scores of an ObjectOriented Modeling Survey

    E-Print Network [OSTI]

    Waterloo, University of

    Double­Blind Scores of an Object­Oriented Modeling Survey by Raymond Sze Chun Yiu An essay declare that I am the sole author of this thesis. I authorize the University of Waterloo to lend this thesis to other institutions or individuals for the purpose of scholarly research. I further authorize

  10. BLIND CHANNEL IDENTIFICATION OF MISO SYSTEMS BASED ON THE CP DECOMPOSITION OF CUMULANT TENSORS

    E-Print Network [OSTI]

    BLIND CHANNEL IDENTIFICATION OF MISO SYSTEMS BASED ON THE CP DECOMPOSITION OF CUMULANT TENSORS algorithm for identifying the parameters of MISO sys- tem. 1. INTRODUCTION We consider the following-Input Single-Output (MISO) channel, y[n] is the output signal. Signals and system are assumed to be complex

  11. Blind identification of MISO-FIR channels Carlos Est^ev~ao R. Fernandes

    E-Print Network [OSTI]

    Boyer, Edmond

    Blind identification of MISO-FIR channels Carlos Est^ev~ao R. Fernandes , Pierre Comon , G, vol.90 Abstract In this paper, we address the problem of determining the order of MISO channels to false alarm. Afterwards, we introduce the concept of MISO channel nested detectors based on a deflation

  12. University of the District of Columbia District of Columbia Drinking Water Blind Taste

    E-Print Network [OSTI]

    District of Columbia, University of the

    University of the District of Columbia District of Columbia Drinking Water Blind Taste Testing for Nutrition, Diet and Health Cooperative Extension Service University of the District of Columbia Dawanna University of the District of Columbia Date: May 2005 Prepared for the DC Water Resources Research Institute

  13. Prediction of visual perceptions with artificial neural networks in a visual prosthesis for the blind

    E-Print Network [OSTI]

    Rattray, Magnus

    Prediction of visual perceptions with artificial neural networks in a visual prosthesis. Introduction The European project OPTIVIP (Optimisation of the Visual Implantable Prosthesis) has recently been based visual prosthesis in order to restore partial vision to the blind. In this paper, an attempt

  14. On the Security of One-Witness Blind Signature Schemes Foteini Baldimtsi and Anna Lysyanskaya

    E-Print Network [OSTI]

    foteini,anna@cs.brown.edu Computer Science Department, Brown University Abstract. Blind signatures have. Therefore, industry leaders such as Microsoft and IBM [35, 42] have been developing, implement- ing in the standard model [14, 3, 24, 28] while some of these have been adapted for practical use by IBM [14]. However

  15. THE FROBENIUS INTEGRABILITY THEOREM AND THE BLIND-SPOT PROBLEM FOR MOTOR VEHICLES

    E-Print Network [OSTI]

    Moskow, Shari

    -side automotive mirror that has no blind-spot or distortion. While reasonably good solutions have been found driver-side mirror compared with a aluminum prototype designed using the method described in [7, the issue of the driver's field of view is a crucial one for automotive safety. According to a U

  16. A Robust Aggregation Method for Quasi-blind Robots in an Active Environment

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Robust Aggregation Method for Quasi-blind Robots in an Active Environment Nazim Fat is through an active environment (stigmergy) and the only information they can receive is the local detection of the waves produced by other robots. The active environment obeys a cellular automaton rule and is simulated

  17. Malicious-Client Security in Blind Seer: A Scalable Private DBMS

    E-Print Network [OSTI]

    Malicious-Client Security in Blind Seer: A Scalable Private DBMS Ben Fisch, Binh Vo, Fernando Krell DBMS that affords both client query privacy and server data protection. It also provides the ability satisfying any query of its choice, thus violating basic security features of any standard DBMS. In sum

  18. Tracking @stemxcomet: Teaching Programming to Blind Students via 3D Printing, Crisis Management, and Twitter

    E-Print Network [OSTI]

    Kane, Shaun K.

    r Tracking @stemxcomet: Teaching Programming to Blind Students via 3D Printing, Crisis Management such as 3D printing offer an opportunity for students to write programs that produce tactile objects and suggests future directions for integrating data analysis and 3D printing into programming instruction

  19. Energy conservation through interior shading of windows: an analysis, test, and evaluation of reflective venetian blinds

    SciTech Connect (OSTI)

    Van Dyck, R L; Konen, T P

    1982-03-01T23:59:59.000Z

    Windows admit radiant and conducted heat energy as well as light and, for this reason, effective means for control is mandatory. Venetian blinds, providing continuous solar control, are ideal for energy efficient windows. They may be closed in the summer to block out undesirable solar radiation and opened in the winter to admit the valuable energy of the sun while providing year-round glare free illumination. Architects, engineers, and manufacturers have been reluctant to promote the use of venetian blinds as energy saving products because of remaining uncertainties in the technology. This cooperative program involving industry, government, and a university research team has developed predictive equations and has confirmed their ability to accurately predict shading coefficients through experiments in an environmental simulator with an artificial sun. Ten venetian blinds with a wide range of surface finishes, including gloss and Satin finish paints, polished aluminum, chrome deposition, and units with different colors on the upper and lower surfaces of the slats were included in the experimental work. The effect of solar incidence and slat angle on blind reflectance and shading coefficient was determined. The impact of varying incidence and slat angle on building energy load is discussed.

  20. Florida ethics panel approves Gov. Scott's placement of assets into blind trust

    E-Print Network [OSTI]

    Belogay, Eugene A.

    Florida ethics panel approves Gov. Scott's placement of assets into blind trust By JOHN KENNEDY Palm Beach Post Staff Writer Updated: 1:46 p.m. Saturday, May 14, 2011 Posted: 6:13 p.m. Friday, May 13, 2011 The Florida Commission on Ethics unanimously approved Gov. Rick Scott's plan Friday to put his

  1. A COMPOSITE APPROACH FOR BLIND GRAYSCALE LOGO WATERMARKING Elliot First1

    E-Print Network [OSTI]

    Qi, Xiaojun

    A COMPOSITE APPROACH FOR BLIND GRAYSCALE LOGO WATERMARKING Elliot First1 and Xiaojun Qi2 1 First watermarking technique, CompMark, to hide a visually meaningful grayscale logo in a host image. The multi-resolution fusion principles are used to embed the grayscale logo in perceptually significant blocks in wavelet

  2. From: Ophthalmology Research: Visual Prosthesis and Ophthalmic Devices: New Hope in Sight Edited by: J. Tombran-Tink, C. Barnstable, and J. F. Rizzo Humana Press Inc., Totowa, NJ

    E-Print Network [OSTI]

    Boahen, Kwabena

    From: Ophthalmology Research: Visual Prosthesis and Ophthalmic Devices: New Hope in Sight Edited by prosthetic devices that can someday be used to replace lesioned neural tissue. For such prosthesis. The approach to design a successful prosthesis that faith- fully replicates the computations performed

  3. InSight: RIVIER ACADEMIC JOURNAL, VOLUME 5, NUMBER 2, FALL 2009 Copyright 2009 by Daniel Szilagyi, Arti Sood and Tejinder Singh. Published by Rivier College, with permission. 1

    E-Print Network [OSTI]

    Riabov, Vladimir V.

    InSight: RIVIER ACADEMIC JOURNAL, VOLUME 5, NUMBER 2, FALL 2009 Copyright © 2009 by Daniel Szilagyi Szilagyi*, Arti Sood** and Tejinder Singh§ M.S. in Computer Science Program, Rivier College #12;Daniel Szilagyi, Arti Sood, and Tejinder Singh 2 Service Providers (ISPs). The ability to act as proxy server

  4. Blind Spots for neutralino Dark Matter in the MSSM with an intermediate m_A

    E-Print Network [OSTI]

    Peisi Huang; Carlos E. M. Wagner

    2014-07-01T23:59:59.000Z

    We study the spin-independent neutralino Dark Matter scattering off heavy nuclei in the MSSM. We identify analytically the blind spots in direct detection for intermediate values of $m_A$. In the region where $\\mu$ and $M_{1,2}$ have opposite signs, there is not only a reduction of the lightest CP-even Higgs coupling to neutralinos, but also a destructive interference between the neutralino scattering through the exchange of the lightest CP-even Higgs and that through the exchange of the heaviest CP-even Higgs. At critical values of $m_A$, the tree-level contribution from the light Higgs exchange cancels the contribution from the heavy Higgs, so the scattering cross section vanishes. We denote these configurations as blind spots, since they provide a generalization of the ones previously discussed in the literature, which occur at very large values of $m_A$. We show that the generalized blind spots may occur in regions of parameter space that are consistent with the obtention of the proper neutralino relic density, and can be tested by non-standard Higgs boson searches and EWino searches at the LHC and future linear colliders.

  5. A 3x Blind ADC-based CDR M. Sadegh Jalali1, Clifford Ting1, Behrooz Abiri1, Ali Sheikholeslami1, Masaya Kibune2, Hirotaka Tamura2

    E-Print Network [OSTI]

    Sheikholeslami, Ali

    19-3 A 3x Blind ADC-based CDR M. Sadegh Jalali1, Clifford Ting1, Behrooz Abiri1, Ali Sheikholeslami}@eecg.utoronto.ca, {kibune.masaya, tamura.hirotaka}@jp.fujitsu.com Abstract--This paper uses a 3-bit ADC to blindly sample tolerance of 0.19UIpp for a 5Gbps PRBS31 with a 16 FR4 channel. I. INTRODUCTION Blind ADC-based CDRs

  6. Non-parametric PSF estimation from celestial transit solar images using blind deconvolution

    E-Print Network [OSTI]

    Gonzalez, Adriana; Jacques, Laurent

    2015-01-01T23:59:59.000Z

    Context: Characterization of instrumental effects in astronomical imaging is important in order to extract accurate physical information from the observations. Optics are never perfect and the non-ideal path through the telescope is usually represented by the convolution of an ideal image with a Point Spread Function (PSF). Other sources of noise (read-out, Photon) also contaminate the image acquisition process. The problem of estimating both the PSF filter and a denoised image is called blind deconvolution and is ill-posed. Aims: We propose a blind deconvolution scheme that relies on image regularization. Contrarily to most methods presented in the literature, it does not assume a parametric model of the PSF and can thus be applied to any telescope. Methods: Our scheme uses a wavelet analysis image prior model and weak assumptions on the PSF filter's response. We use the observations from a celestial body transit where such object can be assumed to be a black disk. Such constraints limits the interchangeabil...

  7. A blind deconvolution method for ground based telescopes and Fizeau interferometers

    E-Print Network [OSTI]

    Prato, M; Bonettini, S; Rebegoldi, S; Bertero, M; Boccacci, P

    2015-01-01T23:59:59.000Z

    In the case of ground-based telescopes equipped with adaptive optics systems, the point spread function (PSF) is only poorly known or completely unknown. Moreover, an accurate modeling of the PSF is in general not available. Therefore in several imaging situations the so-called blind deconvolution methods, aiming at estimating both the scientific target and the PSF from the detected image, can be useful. A blind deconvolution problem is severely ill-posed and, in order to reduce the extremely large number of possible solutions, it is necessary to introduce sensible constraints on both the scientific target and the PSF. In a previous paper we proposed a sound mathematical approach based on a suitable inexact alternating minimization strategy for minimizing the generalized Kullback-Leibler divergence, assuring global convergence. In the framework of this method we showed that an important constraint on the PSF is the upper bound which can be derived from the knowledge of its Strehl ratio. The efficacy of the ap...

  8. Blind Date: Using proper motions to determine the ages of historical images

    E-Print Network [OSTI]

    Jonathan T. Barron; David W. Hogg; Dustin Lang; Sam Roweis

    2008-05-06T23:59:59.000Z

    Astrometric calibration is based on patterns of cataloged stars and therefore effectively assumes a particular epoch, which can be substantially incorrect for historical images. With the known proper motions of stars we can "run back the clock" to an approximation of the night sky in any given year, and in principle the year that best fits stellar patterns in any given image is an estimate of the year in which that image was taken. In this paper we use 47 scanned photographic images of M44 spanning years 1910-1975 to demonstrate this technique. We use only the pixel information in the images; we use no prior information or meta-data about image pointing, scale, orientation, or date. Blind Date returns date meta-data for the input images. It also improves the astrometric calibration of the image because the final astrometric calibration is performed at the appropriate epoch. The accuracy and reliability of Blind Date are functions of image size, pointing, angular resolution, and depth; performance is related to the sum of proper-motion signal-to-noise ratios for catalog stars measured in the input image. All of the science-quality images and 85 percent of the low-quality images in our sample of photographic plate images of M44 have their dates reliably determined to within a decade, many to within months.

  9. Blind Date: Using proper motions to determine the ages of historical images

    E-Print Network [OSTI]

    Barron, Jonathan T; Lang, Dustin; Roweis, Sam

    2008-01-01T23:59:59.000Z

    Astrometric calibration is based on patterns of cataloged stars and therefore effectively assumes a particular epoch, which can be substantially incorrect for historical images. With the known proper motions of stars we can "run back the clock" to an approximation of the night sky in any given year, and in principle the year that best fits stellar patterns in any given image is an estimate of the year in which that image was taken. In this paper we use 47 scanned photographic images of M44 spanning years 1910-1975 to demonstrate this technique. We use only the pixel information in the images; we use no prior information or meta-data about image pointing, scale, orientation, or date. Blind Date returns date meta-data for the input images. It also improves the astrometric calibration of the image because the final astrometric calibration is performed at the appropriate epoch. The accuracy and reliability of Blind Date are functions of image size, pointing, angular resolution, and depth; performance is related t...

  10. Gene therapy rescues photoreceptor blindness in dogs and paves the way for treating human X-linked

    E-Print Network [OSTI]

    Bushman, Frederic

    Gene therapy rescues photoreceptor blindness in dogs and paves the way for treating human X to treated areas. Both rod and cone photoreceptor function were greater in treated (three of four) than mislocalization in treated areas expressing human RPGR protein in rods and cones. Postreceptoral remodeling

  11. Convergent Bayesian formulations of blind source separation and electromagnetic source estimation

    E-Print Network [OSTI]

    Knuth, Kevin H

    2015-01-01T23:59:59.000Z

    We consider two areas of research that have been developing in parallel over the last decade: blind source separation (BSS) and electromagnetic source estimation (ESE). BSS deals with the recovery of source signals when only mixtures of signals can be obtained from an array of detectors and the only prior knowledge consists of some information about the nature of the source signals. On the other hand, ESE utilizes knowledge of the electromagnetic forward problem to assign source signals to their respective generators, while information about the signals themselves is typically ignored. We demonstrate that these two techniques can be derived from the same starting point using the Bayesian formalism. This suggests a means by which new algorithms can be developed that utilize as much relevant information as possible. We also briefly mention some preliminary work that supports the value of integrating information used by these two techniques and review the kinds of information that may be useful in addressing the...

  12. Blind Signal Separation Methods for the Identification of Interstellar Carbonaceous Nanoparticles

    E-Print Network [OSTI]

    Olivier Berne; Yannick Deville; Christine Joblin

    2007-09-27T23:59:59.000Z

    The use of Blind Signal Separation methods (ICA and other approaches) for the analysis of astrophysical data remains quite unexplored. In this paper, we present a new approach for analyzing the infrared emission spectra of interstellar dust, obtained with NASA's Spitzer Space Telescope, using FastICA and Non-negative Matrix Factorization (NMF). Using these two methods, we were able to unveil the source spectra of three different types of carbonaceous nanoparticles present in interstellar space. These spectra can then constitute a basis for the interpretation of the mid-infrared emission spectra of interstellar dust in the Milky Way and nearby galaxies. We also show how to use these extracted spectra to derive the spatial distribution of these nanoparticles.

  13. Difficulties applying recent blind source separation techniques to EEG and MEG

    E-Print Network [OSTI]

    Knuth, Kevin H

    2015-01-01T23:59:59.000Z

    High temporal resolution measurements of human brain activity can be performed by recording the electric potentials on the scalp surface (electroencephalography, EEG), or by recording the magnetic fields near the surface of the head (magnetoencephalography, MEG). The analysis of the data is problematic due to the fact that multiple neural generators may be simultaneously active and the potentials and magnetic fields from these sources are superimposed on the detectors. It is highly desirable to un-mix the data into signals representing the behaviors of the original individual generators. This general problem is called blind source separation and several recent techniques utilizing maximum entropy, minimum mutual information, and maximum likelihood estimation have been applied. These techniques have had much success in separating signals such as natural sounds or speech, but appear to be ineffective when applied to EEG or MEG signals. Many of these techniques implicitly assume that the source distributions hav...

  14. A blind detection of a large, complex, Sunyaev--Zel'dovich structure

    E-Print Network [OSTI]

    Shimwell, T W; Biddulph, P; Bly, D; Boysen, R C; Brown, A R; Brown, M L; Clementson, C; Crofts, M; Culverhouse, T L; Czeres, J; Dace, R J; Davies, M L; D'Alessandro, R; Doherty, P; Duggan, K; Ely, J A; Felvus, M; Feroz, F; Flynn, W; Franzen, T M O; Geisbusch, J; Genova-Santos, R; Grainge, K J B; Grainger, W F; Hammett, D; Hobson, M P; Holler, C M; Hurley-Walker, N; Jilley, R; Kaneko, T; Kneissl, R; Lancaster, K; Lasenby, A N; Marshall, P J; Newton, F; Norris, O; Northrop, I; Odell, D M; Olamaie, M; Pober, Y C Perrott J C; Pooley, G G; Pospieszalski, M W; Quy, V; Rodriguez-Gonzalvez, C; Saunders, R D E; Scaife, A M M; Schammel, M P; Schofield, J; Scott, P F; Shaw, C; Smith, H; Titterington, D J; Velic, M; Waldram, E M; West, S; Wood, B A; Yassin, G; Zwart, J T L

    2010-01-01T23:59:59.000Z

    We present an interesting Sunyaev-Zel'dovich (SZ) detection in the first of the Arcminute Microkelvin Imager (AMI) `blind', degree-square fields to have been observed down to our target sensitivity of 100 microJy/beam. In follow-up deep pointed observations the SZ effect is detected with a maximum peak decrement greater than 8 times the thermal noise. No corresponding emission is visible in the ROSAT all-sky X-ray survey and no cluster is evident in the Palomar all-sky optical survey. Compared with existing SZ images of distant clusters, the extent is large (approximately 10') and complex; our analysis favours a model containing two clusters rather than a single cluster. Our Bayesian analysis is currently limited to modelling each cluster with an ellipsoidal (or spherical) beta-model, which does not do justice to this decrement. Fitting an ellipsoid to the deeper candidate we find the following: (a) Assuming that the Evrard et al. (2002) approximation to Press & Schechter (1974) correctly gives the number...

  15. RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430

    SciTech Connect (OSTI)

    Ray, P. S.; Wood, K. S. [Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States); Ransom, S. M. [National Radio Astronomy Observatory (NRAO), Charlottesville, VA 22903 (United States); Cheung, C. C. [National Academy of Sciences, Washington, DC 20001 (United States); Giroletti, M. [INAF Istituto di Radioastronomia, I-40129 Bologna (Italy); Cognard, I. [Laboratoire de Physique et Chimie de l'Environnement, LPCE UMR 6115 CNRS, F-45071 Orleans Cedex 02 (France); Camilo, F. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Bhattacharyya, B. [Inter-University Centre for Astronomy and Astrophysics, Pune 411 007 (India); Roy, J. [National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune 411 007 (India); Romani, R. W.; Kerr, M. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Ferrara, E. C. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Guillemot, L.; Kramer, M. [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany); Johnston, S.; Keith, M. [CSIRO Astronomy and Space Science, Australia Telescope National Facility, Epping NSW 1710 (Australia); Pletsch, H. J. [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, D-30167 Hannover (Germany); Saz Parkinson, P. M., E-mail: Paul.Ray@nrl.navy.mil [Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States)

    2013-01-20T23:59:59.000Z

    We report the detection of radio emission from PSR J1311-3430, the first millisecond pulsar (MSP) discovered in a blind search of Fermi Large Area Telescope (LAT) gamma-ray data. We detected radio pulsations at 2 GHz, visible for <10% of {approx}4.5 hr of observations using the Green Bank Telescope (GBT). Observations at 5 GHz with the GBT and at several lower frequencies with Parkes, Nancay, and the Giant Metrewave Radio Telescope resulted in non-detections. We also report the faint detection of a steep spectrum continuum radio source (0.1 mJy at 5 GHz) in interferometric imaging observations with the Jansky Very Large Array. These detections demonstrate that PSR J1311-3430 is not radio quiet and provide additional evidence that radio-quiet MSPs are rare. The radio dispersion measure of 37.8 pc cm{sup -3} provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. We see apparent excess delay in the radio pulses as the pulsar appears from eclipse and we speculate on possible mechanisms for the non-detections of the pulse at other orbital phases and observing frequencies.

  16. A blind test of photometric redshifts on ground-based data

    E-Print Network [OSTI]

    H. Hildebrandt; C. Wolf; N. Benitez

    2008-01-18T23:59:59.000Z

    Aims. We analyse the relative performance of different photo-z codes in blind applications to ground-based data. Methods. We tested the codes on imaging datasets with different depths and filter coverages and compared the results to large spectroscopic catalogues. The photo-z error behaviour was analysed to select cleaner subsamples with more secure photo-z estimates. We consider Hyperz, BPZ, and the code used in the CADIS, COMBO-17, and HIROCS surveys. Results. The photo-z error estimates of the three codes do not correlate tightly with the accuracy of the photo-z's. While very large errors sometimes indicate a true catastrophic photo-z failure, smaller errors are usually not meaningful. For any given dataset, we find significant differences in redshift accuracy and outlier rates between the different codes when compared to spectroscopic redshifts. However, different codes excel in different regimes. The agreement between different sets of photo-z's is better for the subsample with secure spectroscopic redshifts than for the whole catalogue. Conclusions. Running today's photo-z codes on well-calibrated ground-based data can lead to reasonable accuracy. The actual performance on a given dataset is largely dependent on the template choice and on realistic instrumental response curves. It would be desirable to improve the photo-z error estimation for future applications so as to get a better handle on rejecting objects with grossly inaccurate photo-z's. The secure spectroscopic subsamples commonly used for assessments of photo-z accuracy may be biased toward objects for which the photo-z's are easier to estimate than for a complete flux-limited sample, resulting in very optimistic estimates. (abridged)

  17. Double-blind test program for astrometric planet detection with Gaia

    E-Print Network [OSTI]

    S. Casertano; M. G. Lattanzi; A. Sozzetti; A. Spagna; S. Jancart; R. Morbidelli; R. Pannunzio; D. Pourbaix; D. Queloz

    2008-02-04T23:59:59.000Z

    We use detailed simulations of the Gaia observations of synthetic planetary systems and develop and utilize independent software codes in double-blind mode to analyze the data, including statistical tools for planet detection and different algorithms for single and multiple Keplerian orbit fitting that use no a priori knowledge of the true orbital parameters of the systems. 1) Planets with astrometric signatures $\\alpha\\simeq 3$ times the single-measurement error $\\sigma_\\psi$ and period $P\\leq 5$ yr can be detected reliably, with a very small number of false positives. 2) At twice the detection limit, uncertainties in orbital parameters and masses are typically $15%-20%$. 3) Over 70% of two-planet systems with well-separated periods in the range $0.2\\leq P\\leq 9$ yr, $2\\leq\\alpha/\\sigma_\\psi\\leq 50$, and eccentricity $e\\leq 0.6$ are correctly identified. 4) Favorable orbital configurations have orbital elements measured to better than 10% accuracy $> 90%$ of the time, and the value of the mutual inclination angle determined with uncertainties $\\leq 10^{\\degr}$. 5) Finally, uncertainties obtained from the fitting procedures are a good estimate of the actual errors. Extrapolating from the present-day statistical properties of the exoplanet sample, the results imply that a Gaia with $\\sigma_\\psi$ = 8 $\\mu$as, in its unbiased and complete magnitude-limited census of planetary systems, will measure several thousand giant planets out to 3-4 AUs from stars within 200 pc, and will characterize hundreds of multiple-planet systems, including meaningful coplanarity tests. Finally, we put Gaia into context, identifying several areas of planetary-system science in which Gaia can be expected to have a relevant impact, when combined with data coming from other ongoing and future planet search programs.

  18. Licenses Available in Chemicals | Tech Transfer | ORNL

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

    for Electrical and Electronic Device Manufacture 200000884 Method of Restoring Sight to Blind Persons 200100899 Catalyst- Induced Growth of Carbon Nanotubes on Tips of Cantilevers...

  19. Non-blind catalogue of extragalactic point sources from the Wilkinson Microwave Anisotropy Probe (WMAP) first 3--year survey data

    E-Print Network [OSTI]

    M. Lopez-Caniego; J. Gonzalez-Nuevo; D. Herranz; M. Massardi; J. L. Sanz; G. De Zotti; L. Toffolatti; F. Argueso

    2007-01-16T23:59:59.000Z

    We have used the MHW2 filter to obtain estimates of the flux densities at the WMAP frequencies of a complete sample of 2491 sources, mostly brighter than 500 mJy at 5 GHz, distributed over the whole sky excluding a strip around the Galactic equator (b blind method adopted by the WMAP team. On the other hand, our low-frequency selection threshold left out 25 WMAP sources, only 12 of which, however, are 5 sigma detections and only 3 have fluxes S at 23 GHz > 1.1 Jy. Thus, our approach proved to be competitive with, and complementary to the WMAP one.

  20. A Blind Search for Bursts of Very High Enery Gamma Rays with Milagro

    E-Print Network [OSTI]

    Vlasios Vasileiou

    2008-11-10T23:59:59.000Z

    Milagro is a water-Cherenkov detector that observes the extended air showers produced by cosmic gamma rays of energies E>100GeV. The effective area of Milagro peaks at energies E~10TeV, however it is still large even down to a few hundred GeV (~10m^2 at 100GeV). The wide field of view (~2sr) and high duty cycle (>90%) of Milagro make it ideal for continuously monitoring the overhead sky for transient Very High Energy (VHE) emissions. This study searched the Milagro data for such emissions. Even though the search was optimized primarily for detecting the emission from Gamma-Ray Bursts (GRBs), it was still sensitive to the emission from the last stages of the evaporation of Primordial Black Holes or to any other kind of phenomena that produce bursts of VHE gamma rays. Measurements of the GRB spectra by satellites up to few tens of GeV showed no signs of a cutoff. Even though multiple instruments sensitive to $GeV/TeV$ gamma rays have performed observations of GRBs, there has not yet been a definitive detection of such an emission yet. One of the reasons for that is that gamma rays with energies E>~100GeV are attenuated by interactions with the extragalactic background light or are absorbed internally at the site of the burst. There are many models that predict VHE gamma-ray emission from GRBs. A detection or a constraint of such an emission can provide useful information on the mechanism and environment of GRBs. This study performed a blind search of the Milagro data of the last five years for bursts of VHE gamma rays with durations ranging from 100musec to 316sec. No GRB localization was provided by an external instrument. Instead, the whole dataset was thoroughly searched in time, space, and duration. No significant events were detected. Upper limits were placed on the VHE emission from GRBs.

  1. A Randomized, Double-Blind, Placebo-Controlled Trial of Ursodeoxycholic Acid in Primary Biliary Cirrhosis

    E-Print Network [OSTI]

    Lin, Danyu

    -TSAO,4 GREGORY F. BONNER, 4 ALEXANDER B. WEST, 4 JAMES L. BOYER, 4 VELIMIR n. LUKETIC, 5 MITCHELL LI, s ALAN F. HOFMANN,s AND RODNEY S. MARKIN7 One hundred fifty-one patients with primary biliary cirrhosis Cirrhosis BURTON COMBES, 1 ROBERT L. CARITHERS, JR., 2 WILLIS C. MADDREY, 1'3 DANYULIN, 2 MARY F. MCDONALD

  2. High-performance solar-blind ultraviolet photodetector based on mixed-phase ZnMgO thin film

    SciTech Connect (OSTI)

    Fan, M. M. [Graduate University of the Chinese Academy of Sciences, Beijing 100049 (China); State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dongnanhu Road, 130033 Changchun (China); Liu, K. W., E-mail: liukw@ciomp.ac.cn, E-mail: shendz@ciomp.ac.cn; Zhang, Z. Z.; Li, B. H.; Chen, X.; Zhao, D. X.; Shan, C. X.; Shen, D. Z., E-mail: liukw@ciomp.ac.cn, E-mail: shendz@ciomp.ac.cn [State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dongnanhu Road, 130033 Changchun (China)

    2014-07-07T23:59:59.000Z

    High Mg content mixed-phase Zn{sub 0.38}Mg{sub 0.62}O was deposited on a-face sapphire by plasma-assisted molecular beam epitaxy, based on which a metal-semiconductor-metal solar-blind ultraviolet (UV) photodetector was fabricated. The dark current is only 0.25?pA at 5?V, which is much lower than that of the reported mixed-phase ZnMgO photodetectors. More interestingly, different from the other mixed-phase ZnMgO photodetectors containing two photoresponse bands, this device shows only one response peak and its ?3?dB cut-off wavelength is around 275?nm. At 10?V, the peak responsivity is as high as 1.664?A/W at 260?nm, corresponding to an internal gain of ?8. The internal gain is mainly ascribed to the interface states at the grain boundaries acting as trapping centers of photogenerated holes. In view of the advantages of mixed-phase ZnMgO photodetectors over single-phase ZnMgO photodetectors, including easy fabrication, high responsivity, and low dark current, our findings are anticipated to pave a new way for the development of ZnMgO solar-blind UV photodetectors.

  3. Preventing detector blinding attack and other random number generator attacks on quantum cryptography by use of an explicit random number generator

    E-Print Network [OSTI]

    Mario Stip?evi?

    2014-07-10T23:59:59.000Z

    A particularly successful detector blinding attack has been recently demonstrated on various quantum key distribution (QKD) systems, performing for the first time an undetectable and complete recovery of the key. In this paper two original contributions are given to understanding and prevention of this attack.

  4. Mark Humayun Photograph by Jill Greenberg

    E-Print Network [OSTI]

    Valero-Cuevas, Francisco

    .com/science/health/breakthroughs/next-gen-digital-sight-could- cure-blindness Next Gen Digital Sight Could Cure Blindness The Brilliant Idea: An artificial retina to receive the Argus II artificial retina. In a healthy human eye, 125 million photoreceptors at the back's left eye and lift the saran-wrap-like membrane that covers it, called the conjunctiva. He

  5. Patients Participate! Literature Review

    E-Print Network [OSTI]

    Rzepa, Henry S.

    Patients Participate! Literature Review Usability and human factors in citizen science projects ..............................................What is a citizen science project?! 4 .................................Human factors in citizen science projects! 6 General factors to be considered when carrying out a citizen science

  6. Though Lost to Sight to Memory Dear

    E-Print Network [OSTI]

    Jack [writer of accompanying material

    2012-03-05T23:59:59.000Z

    you have started to receive them. Love [and] kisses. Jack; SENT TO: Mrs. J. P. Harrison; Cor. Ring [and] Wellington; Dundas; Ontario; Canada...

  7. Collaborative vision, saving sight | ornl.gov

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i tCollaboration March 16, 2010 During

  8. fungemia in an immunocompromised patient

    E-Print Network [OSTI]

    Hager, Jonathan L; Mir, Mohsin R; Hsu, Sylvia

    2010-01-01T23:59:59.000Z

    C. krusei fungemia are acute leukemia and neutropenia. Poorin patients with acute leukemia [ 7 ]. Candida kruseiof a patient with acute lymphoblastic leukemia who, despite

  9. fungemia in an immunocompromised patient

    E-Print Network [OSTI]

    Hager, Jonathan L; Mir, Mohsin R; Hsu, Sylvia

    2010-01-01T23:59:59.000Z

    of a patient with acute lymphoblastic leukemia who, despiteof a patient with acute lymphoblastic leukemia who, despiteof pre-B cell acute lymphoblastic leukemia treated with

  10. Medical Technology for Superior Patient

    E-Print Network [OSTI]

    Hayden, Nancy J.

    Protection Partnership for items normally under service contract · Patient safety and risk management

  11. A blind CO detection of a Distant Red Galaxy in the HS1700+64 proto-cluster

    E-Print Network [OSTI]

    Chapman, S C; Smail, Ian; Blain, A W; Geach, J E; Gurwell, M; Ivison, R J; Petitpas, G R; Reddy, N; Steidel, C C

    2015-01-01T23:59:59.000Z

    We report the blind detection of 12CO emission from a Distant Red Galaxy, HS1700.DRG55. We have used the IRAM PdBI-WIDEX, with its 3.6GHz of instantaneous dual-polarization bandwidth, to target 12CO(3--2) from galaxies lying in the proto-cluster at z=2.300 in the field HS1700+64. If indeed this line in DRG55 is 12CO(3--2), it's detection at 104.9GHz indicates a z_CO=2.296. None of the other eight known z~2.30 proto-cluster galaxies lying within the primary beam (PB) are detected in 12CO, although the limits are ~2x worse towards the edge of the PB where several lie. The optical/near-IR magnitudes of DRG55 (R_AB>27, K_AB=22.3) mean that optical spectroscopic redshifts are difficult with 10m-class telescopes, but near-IR redshifts would be feasible. The 24um-implied SFR (210 M_odot yr-1), stellar mass (~10^11 M-odot) and 12CO line luminosity (3.6x10^10 K km s-1 pc^2) are comparable to other normal 12CO-detected star forming galaxies in the literature, although the galaxy is some ~2 mag (~6x) fainter in the rest...

  12. A blind hierarchical coherent search for gravitational-wave signals from coalescing compact binaries in a network of interferometric detectors

    E-Print Network [OSTI]

    Sukanta Bose; Thilina Dayanga; Shaon Ghosh; Dipongkar Talukder

    2011-04-14T23:59:59.000Z

    We describe a hierarchical data analysis pipeline for coherently searching for gravitational wave (GW) signals from non-spinning compact binary coalescences (CBCs) in the data of multiple earth-based detectors. It assumes no prior information on the sky position of the source or the time of occurrence of its transient signals and, hence, is termed "blind". The pipeline computes the coherent network search statistic that is optimal in stationary, Gaussian noise, and allows for the computation of a suite of alternative statistics and signal-based discriminators that can improve its performance in real data. Unlike the coincident multi-detector search statistics employed so far, the coherent statistics are different in the sense that they check for the consistency of the signal amplitudes and phases in the different detectors with their different orientations and with the signal arrival times in them. The first stage of the hierarchical pipeline constructs coincidences of triggers from the multiple interferometers, by requiring their proximity in time and component masses. The second stage follows up on these coincident triggers by computing the coherent statistics. The performance of the hierarchical coherent pipeline on Gaussian data is shown to be better than the pipeline with just the first (coincidence) stage.

  13. Solar passive ceiling system. Final report. [Passive solar heating system with venetian blind reflectors and latent heat storage in ceiling

    SciTech Connect (OSTI)

    Schneider, A.R.

    1980-01-01T23:59:59.000Z

    The construction of a 1200 square foot building, with full basement, built to be used as a branch library in a rural area is described. The primary heating source is a passive solar system consisting of a south facing window system. The system consists of: a set of windows located in the south facing wall only, composed of double glazed units; a set of reflectors mounted in each window which reflects sunlight up to the ceiling (the reflectors are similar to venetian blinds); a storage area in the ceiling which absorbs the heat from the reflected sunlight and stores it in foil salt pouches laid in the ceiling; and an automated curtain which automatically covers and uncovers the south facing window system. The system is totally passive and uses no blowers, pumps or other active types of heat distribution equipment. The building contains a basement which is normally not heated, and the north facing wall is bermed four feet high around the north side.

  14. Freehand Two-Step CT-Guided Brain Tumor Biopsy: A Fast and Effective Interventional Procedure in Selected Patients

    SciTech Connect (OSTI)

    Thanos, Loukas, E-mail: loutharad@yahoo.com; Mylona, Sofia; Galani, Panagiota; Kalioras, Vasilios; Pomoni, Maria; Batakis, Nikolaos ['Korgialeneio-Benakeio', Hellenic Red-Cross Hospital of Athens, Radiology Department (Greece)

    2006-04-15T23:59:59.000Z

    Purpose. To evaluate the efficacy and safety of CT-guided needle biopsy of brain lesions without a stereotactic device, and to determine the best possible indications for this technique. Methods. From February 2001 to February 2004, 20 patients (12 men, 8 women; age 61-82 years) underwent CT-guided brain lesion biopsy. The procedure started with a brain CT scan for lesion localization and for selection of the inlet for needle insertion. The patient was then transported to the operating room where cranioanatrisis was performed. Subsequently, the biopsy was performed under CT guidance using a 14G brain biopsy needle with a blind smooth end and lateral holes. At the end of the biopsy, the field was checked for possible complications with a CT scan. Results. Histopathologic results were: brain tumor in 16 patients (80%), inflammatory process in 3 (15%), and no conclusive diagnosis in 1 (5%). A repeat of the process was required in 2 patients. A minor complication of local hematoma was found in 1 patient (5%). There were no deaths or other serious complications.Conclusion. CT-guided biopsy is a reliable method for histopathologic diagnosis of brain lesions in selected cases. It is a simple, fast, effective, low-cost procedure with minimal complications, indicated especially for superficial and large tumors.

  15. RESEARCH Open Access Patient-reported outcomes among patients using

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with those for clinical outcomes. Conclusions: These data from a clinical practice study support those from, Injectable therapy, Patient-reported outcomes * Correspondence: mtheod@ebie.gr 8 Department of ClinicalRESEARCH Open Access Patient-reported outcomes among patients using exenatide twice daily

  16. Blind encoding into qudits

    E-Print Network [OSTI]

    J. S. Shaari; M. R. B. Wahiddin; S. Mancini

    2007-09-03T23:59:59.000Z

    We consider the problem of encoding classical information into unknown qudit states belonging to any basis, of a maximal set of mutually unbiased bases, by one party and then decoding by another party who has perfect knowledge of the basis. Working with qudits of prime dimensions, we point out a no-go theorem that forbids shift operations on arbitrary unknown states. We then provide the necessary conditions for reliable encoding/decoding.

  17. Blind reverberation cancellation techniques 

    E-Print Network [OSTI]

    Tonelli, Massimiliano

    2012-06-25T23:59:59.000Z

    Reverberation, a component of any sound generated in a natural environment, can degrade speech intelligibility or more generally the quality of a signal produced within a room. In a typical setup for teleconferencing, ...

  18. The Front Lines of Patient Safety

    E-Print Network [OSTI]

    Soloveichik, David

    patient safety · Incident Reporting · Root Cause Analysis · FMEA · Culture of Patient Safety Survey

  19. Effect of Recombinant Human Deoxyribonuclease on Oropharyngeal Secretions in Patients With Head-and-Neck Cancers Treated With Radiochemotherapy

    SciTech Connect (OSTI)

    Mittal, Bharat B., E-mail: bmittal@nmh.org [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Wang, Edward [Department of Surgery, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Sejpal, Samir [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Agulnik, Mark [Section of Medical Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Mittal, Amit [Yale University, New Haven, Connecticut (United States); Harris, Kirk [Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado (United States)

    2013-10-01T23:59:59.000Z

    Purpose: The current study examined the effect of recombinant human deoxyribonuclease (rhDNase) on quality of life (QOL) measures, clinical improvement, and DNA content of thick oropharyngeal secretions (OPS) in patients with head-and-neck (H and N) cancers. Methods and Materials: Thirty-six patients with local-regional advanced H and N cancer receiving chemoradiationtherapy (CRT) were randomized to receive either placebo or rhDNase. Endpoints included MD Anderson Symptom Inventory-Head and Neck (MDASI-HN) and Functional Assessment of Cancer Therapy–Head and Neck (FACT-NH) scores, along with clinical assessment and DNA concentration of OPS. Results: There were no statistically significant differences in patients' QOL outcomes over the study period. Both groups showed an increase in symptom and interference scores, although patients in the rhDNase group showed a greater decline in both scores during the 3 months posttreatment. Similarly, both groups showed a decline in physical and functional well being but recovered in the 3 months posttreatment follow-up, with the rhDNase group exhibiting speedier recovery. Patients in the rhDNase group exhibited significant clinical improvement in OPS, blindly assessed by a physician, compared with the placebo group (67% vs 27%, respectively; P=.046). The rhDNase group showed no change in OPS-DNA concentration, although the placebo group showed a significant increase in DNA concentration during the drug trial (P=.045). There was no differences in acute toxicities between the 2 groups. Conclusions: Our preliminary data suggest that rhDNase did not significantly improve study primary endpoints of QOL measures compared with the placebo group. However, there was a significant improvement in secondary endpoints of clinically assessed OPS and DNA concentration compared with placebo in H and N cancer patients treated with CRT. Further investigation in larger numbers of patients is warranted.

  20. A Randomized Controlled Trial of Lorazepam to Reduce Liver Motion in Patients Receiving Upper Abdominal Radiation Therapy

    SciTech Connect (OSTI)

    Tsang, Derek S.; Voncken, Francine E.M.; Tse, Regina V. [Princess Margaret Cancer Centre, University Health Network, Department of Radiation Oncology, University of Toronto, Toronto (Canada); Sykes, Jenna [Department of Biostatistics, Princess Margaret Cancer Centre, University Health Network, Toronto (Canada); Wong, Rebecca K.S.; Dinniwell, Rob E.; Kim, John; Ringash, Jolie; Brierley, James D.; Cummings, Bernard J.; Brade, Anthony [Princess Margaret Cancer Centre, University Health Network, Department of Radiation Oncology, University of Toronto, Toronto (Canada); Dawson, Laura A., E-mail: laura.dawson@rmp.uhn.on.ca [Princess Margaret Cancer Centre, University Health Network, Department of Radiation Oncology, University of Toronto, Toronto (Canada)

    2013-12-01T23:59:59.000Z

    Purpose: Reduction of respiratory motion is desirable to reduce the volume of normal tissues irradiated, to improve concordance of planned and delivered doses, and to improve image guided radiation therapy (IGRT). We hypothesized that pretreatment lorazepam would lead to a measurable reduction of liver motion. Methods and Materials: Thirty-three patients receiving upper abdominal IGRT were recruited to a double-blinded randomized controlled crossover trial. Patients were randomized to 1 of 2 study arms: arm 1 received lorazepam 2 mg by mouth on day 1, followed by placebo 4 to 8 days later; arm 2 received placebo on day 1, followed by lorazepam 4 to 8 days later. After tablet ingestion and daily radiation therapy, amplitude of liver motion was measured on both study days. The primary outcomes were reduction in craniocaudal (CC) liver motion using 4-dimensional kV cone beam computed tomography (CBCT) and the proportion of patients with liver motion ?5 mm. Secondary endpoints included motion measured with cine magnetic resonance imaging and kV fluoroscopy. Results: Mean relative and absolute reduction in CC amplitude with lorazepam was 21% and 2.5 mm respectively (95% confidence interval [CI] 1.1-3.9, P=.001), as assessed with CBCT. Reduction in CC amplitude to ?5 mm residual liver motion was seen in 13% (95% CI 1%-25%) of patients receiving lorazepam (vs 10% receiving placebo, P=NS); 65% (95% CI 48%-81%) had reduction in residual CC liver motion to ?10 mm (vs 52% with placebo, P=NS). Patients with large respiratory movement and patients who took lorazepam ?60 minutes before imaging had greater reductions in liver CC motion. Mean reductions in liver CC amplitude on magnetic resonance imaging and fluoroscopy were nonsignificant. Conclusions: Lorazepam reduces liver motion in the CC direction; however, average magnitude of reduction is small, and most patients have residual motion >5 mm.

  1. IU Health Physicians Patient Education

    E-Print Network [OSTI]

    Zhou, Yaoqi

    IU Health Physicians Patient Education: The Key to Compliance, Consent and Outcomes Compliance with self-care Patients who are better educated are more likely to be medication compliant, adhere better to therapy sched- ules or other self-care as ordered by providers. Following self-care orders reduces

  2. Secretary Abraham Announces Energy Department "What's Next" Expo...

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

    and the lead researcher in a DOE-funded project designed to help restore sight for blind people affected by retinal disorders. Students then toured the nearly 50 interactive...

  3. Mentor Guide Patient and supportive.

    E-Print Network [OSTI]

    Lewis, Robert Michael

    Mentor Guide 2012 Patient and supportive. Anyone can be a mentor. Are you... Respected by others in your field. Respectful of others. Confident. People-oriented. Being a mentor allows you the opportunity to provide you with some level of personal satisfaction. In addition, many mentors report that mentoring has

  4. Patients are treated with respect, consideration and dignity. Patients are provided appropriate privacy.

    E-Print Network [OSTI]

    Moore, Paul A.

    · Patients are treated with respect, consideration and dignity. · Patients are provided appropriate privacy. · Patient disclosures and records are treated confidentially, and, except when required by law

  5. Oral Mucositis Prevention By Low-Level Laser Therapy in Head-and-Neck Cancer Patients Undergoing Concurrent Chemoradiotherapy: A Phase III Randomized Study

    SciTech Connect (OSTI)

    Gouvea de Lima, Aline [Departamento de Radiologia, Disciplina de Oncologia, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, SP (Brazil); Villar, Rosangela Correa [Instituto de Radiologia, Servico de Radioterapia, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, SP (Brazil); Castro, Gilberto de, E-mail: gilberto.castro@usp.br [Department of Clinical Oncology, Instituto do Cancer do Estado de Sao Paulo, Sao Paulo, SP (Brazil); Antequera, Reynaldo [Divisao de Odontologia, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, SP (Brazil); Gil, Erlon; Rosalmeida, Mauro Cabral [Instituto de Radiologia, Servico de Radioterapia, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, SP (Brazil); Federico, Miriam Hatsue Honda; Snitcovsky, Igor Moises Longo [Departamento de Radiologia, Disciplina de Oncologia, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, SP (Brazil)

    2012-01-01T23:59:59.000Z

    Purpose: Oral mucositis is a major complication of concurrent chemoradiotherapy (CRT) in head-and-neck cancer patients. Low-level laser (LLL) therapy is a promising preventive therapy. We aimed to evaluate the efficacy of LLL therapy to decrease severe oral mucositis and its effect on RT interruptions. Methods and Materials: In the present randomized, double-blind, Phase III study, patients received either gallium-aluminum-arsenide LLL therapy 2.5 J/cm{sup 2} or placebo laser, before each radiation fraction. Eligible patients had to have been diagnosed with squamous cell carcinoma or undifferentiated carcinoma of the oral cavity, pharynx, larynx, or metastases to the neck with an unknown primary site. They were treated with adjuvant or definitive CRT, consisting of conventional RT 60-70 Gy (range, 1.8-2.0 Gy/d, 5 times/wk) and concurrent cisplatin. The primary endpoints were the oral mucositis severity in Weeks 2, 4, and 6 and the number of RT interruptions because of mucositis. The secondary endpoints included patient-reported pain scores. To detect a decrease in the incidence of Grade 3 or 4 oral mucositis from 80% to 50%, we planned to enroll 74 patients. Results: A total of 75 patients were included, and 37 patients received preventive LLL therapy. The mean delivered radiation dose was greater in the patients treated with LLL (69.4 vs. 67.9 Gy, p = .03). During CRT, the number of patients diagnosed with Grade 3 or 4 oral mucositis treated with LLL vs. placebo was 4 vs. 5 (Week 2, p = 1.0), 4 vs. 12 (Week 4, p = .08), and 8 vs. 9 (Week 6, p = 1.0), respectively. More of the patients treated with placebo had RT interruptions because of mucositis (6 vs. 0, p = .02). No difference was detected between the treatment arms in the incidence of severe pain. Conclusions: LLL therapy was not effective in reducing severe oral mucositis, although a marginal benefit could not be excluded. It reduced RT interruptions in these head-and-neck cancer patients, which might translate into improved CRT efficacy.

  6. OHSU Healthcare Patient rights, responsibilities

    E-Print Network [OSTI]

    Chapman, Michael S.

    into account your comfort and dignity. · Care that is delivered in a way that is free from abuse.OHSUhealth.com Your health care is our priority. You are why we are here. At OHSU, we provide patient- and family-centered care. That means: · We know who you are and care about you as a unique individual. · We attend to your

  7. Frequently Asked Questions about Patient Care Costs And a Quick Guide to Patient Care Costs

    E-Print Network [OSTI]

    Janssen, Michel

    Frequently Asked Questions about Patient Care Costs And a Quick Guide to Patient Care Costs questions regarding human research patient care costs. Human research patient care costs are the costs. The costs of these services normally are assigned to specific research projects through the development

  8. Phenylbutyrate Mouthwash Mitigates Oral Mucositis During Radiotherapy or Chemoradiotherapy in Patients With Head-and-Neck Cancer

    SciTech Connect (OSTI)

    Yen, Sang-Hue; Wang, Ling-Wei [Cancer Center, Taipei Veterans General Hospital, Taipei, Taiwan (China); National Yang Ming University, School of Medicine, Taipei, Taiwan (China); Lin, Yi-Hsien [Division of Radiotherapy, Cheng Hsin General Hospital, Taipei, Taiwan (China); Jen, Yee-Min, E-mail: yeeminjen@yahoo.com.tw [Department of Radiation Oncology, Tri-Service General Hospital, Taipei, Taiwan (China); National Defense Medical Center, Taipei, Taiwan (China); Chung, Yih-Lin, E-mail: ylchung@kfsyscc.org [Department of Radiation Oncology, Koo Foundation Sun Yat-Sen Cancer Center, Taipei, Taiwan (China); National Yang Ming University, School of Medicine, Taipei, Taiwan (China)

    2012-03-15T23:59:59.000Z

    Purpose: Deleterious oral mucositis (OM) develops during radiotherapy (RT) or chemoradiotherapy for head-and-neck cancer (HNC) patients. There are currently no effective cytoprotective treatments for OM without a potential risk of tumor protection. This randomized, double-blind, placebo-controlled pilot study aimed to determine the therapeutic safety and efficacy of phenylbutyrate (an antitumor histone deacetylase inhibitor and chemical chaperone) 5% mouthwash for treating OM caused by cancer therapy. Methods and Materials: Between September 2005 and June 2006, 36 HNC patients were randomized to standard oral care plus 5 mL of either phenylbutyrate 5% mouthwash (n = 17) or placebo (mouthwash vehicle, n = 19) taken four times daily (swish and spit). Treatment began when mild mucositis (Radiation Therapy Oncology Group Grade 1) occurred, and ended 4 weeks after RT completion. Safety and efficacy were based on adverse events, physical examination, laboratory determinations, vital signs, Oral Mucosa Assessment Scale (OMAS) and World Health Organization scores, the ability to eat, body weight change, local control, and survival. Results: We found no severe drug-related side effect. At RT doses of 5500-7500 cGy, phenylbutyrate significantly mitigated the severity of mucositis compared with placebo, based on both the WHO score (severity {>=} 3; p = 0.0262) and the OMAS scale (ulceration score {>=} 2; p = 0.0049). The Kaplan-Meier estimates for 2- and 3-year local control, and overall survival were 100% and 80.8%, and 78.6% and 64.3%, respectively, in the phenylbutyrate group and 74.2% and 74.2%, and 57.4% and 50.2%, respectively, in the placebo group. Conclusions: This pilot trial suggested that phenylbutyrate mouthwash significantly decreased the impact of OM in HNC patients receiving RT or chemoradiotherapy and did not confront the tumor control. Larger Phase II randomized trials are needed to confirm these results.

  9. Lecture room Digital camera iSight Microphone

    E-Print Network [OSTI]

    experience to the remote audience. It is a completely automated, non-intrusive system which allows Core Duo, small size and no fan) 5. UPS (for continuous operation) 6. cooling system Software It has integration with shell commands using "do shell script"; remote script execution); · OSX and its Unix shell

  10. SCI-FI NO MORE Restoring sight to

    E-Print Network [OSTI]

    Valero-Cuevas, Francisco

    Bots INVISIBLE CITIES Michelle Povinelli plots solar theft 46 36 26 SPRING 2013 #12;The USC Viterbi SchoolJimCollins'good-to-greatascent: passion, excellence and the resources to fuel them. We have encapsulated the first two in the following

  11. Environmental Management Scientist Sets His Sights on Mars | Department of

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

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrackEllen|July 14, 2014July

  12. Inexpensive handheld tests for diseases are in sight

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)HydrogenRFP »summerlectures [ICO]defaultInexpensive

  13. Silver Clear Nylon Dressing is Effective in Preventing Radiation-Induced Dermatitis in Patients With Lower Gastrointestinal Cancer: Results From a Phase III Study

    SciTech Connect (OSTI)

    Niazi, Tamim M. [Segal Cancer Centre, Department of Radiation Oncology, Jewish General Hospital, McGill University (Canada)] [Segal Cancer Centre, Department of Radiation Oncology, Jewish General Hospital, McGill University (Canada); Vuong, Te, E-mail: tvuong@jgh.mcgill.ca [Segal Cancer Centre, Department of Radiation Oncology, Jewish General Hospital, McGill University (Canada)] [Segal Cancer Centre, Department of Radiation Oncology, Jewish General Hospital, McGill University (Canada); Azoulay, Laurant [Department of Epidemiology, Jewish General Hospital, McGill University (Canada)] [Department of Epidemiology, Jewish General Hospital, McGill University (Canada); Marijnen, Corrie [Department of Clinical Oncology, Leiden University Medical Center, Amsterdam (Netherlands)] [Department of Clinical Oncology, Leiden University Medical Center, Amsterdam (Netherlands); Bujko, Kryzstof [Department of Radiotherapy, The Maria Sklodowska-Curie Memorial Cancer Centre, Warsaw (Poland)] [Department of Radiotherapy, The Maria Sklodowska-Curie Memorial Cancer Centre, Warsaw (Poland); Nasr, Elie [Department of Radiation Oncology, Hotel-Dieu de France Hospital (Lebanon)] [Department of Radiation Oncology, Hotel-Dieu de France Hospital (Lebanon); Lambert, Christine; Duclos, Marie; Faria, Sergio; David, Marc [Department of Radiation Oncology, Montreal-General-Hospital, McGill University, Montreal (Canada)] [Department of Radiation Oncology, Montreal-General-Hospital, McGill University, Montreal (Canada); Cummings, Bernard [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto (Canada)

    2012-11-01T23:59:59.000Z

    Purpose: For patients with anal canal and advanced rectal cancer, chemoradiation therapy is a curative modality or an important adjunct to surgery. Nearly all patients treated with chemoradiation experience some degree of radiation-induced dermatitis (RID). Prevention and effective treatment of RID, therefore, is of considerable clinical relevance. The present phase III randomized trial compared the efficacy of silver clear nylon dressing (SCND) with that of standard skin care for these patients. Methods and Materials: A total of 42 rectal or anal canal cancer patients were randomized to either a SCND or standard skin care group. SCND was applied from Day 1 of radiation therapy (RT) until 2 weeks after treatment completion. In the control arm, sulfadiazine cream was applied at the time of skin dermatitis. Printed digital photographs taken 2 weeks prior to, on the last day, and two weeks after the treatment completion were scored by 10 blinded readers, who used the common toxicity scoring system for skin dermatitis. Results: The radiation dose ranged from 50.4 to 59.4 Gy, and there were no differences between the 2 groups. On the last day of RT, when the most severe RID occurs, the mean dermatitis score was 2.53 (standard deviation [SD], 1.17) for the standard and 1.67 (SD, 1.2; P=.01) for the SCND arm. At 2 weeks after RT, the difference was 0.39 points in favor of SCND (P=.39). There was considerable intraclass correlation among the 10 observers. Conclusions: Silver clear nylon dressing is effective in reducing RID in patients with lower gastrointestinal cancer treated with combined chemotherapy and radiation treatment.

  14. Craniospinal treatment with the patient supine

    SciTech Connect (OSTI)

    Thomadsen, Bruce; Mehta, Minesh; Howard, Steven; Das, Rupak

    2003-03-31T23:59:59.000Z

    Radiotherapy of the craniospinal axis in young children is frequently complicated by the need for access to the patient's airway for sedation and anesthesia delivery or by frequent, unanticipated movement. Positioning the patient supine, instead of in the conventional prone position, allows the use of immobilization facemasks with body molds and more positive patient fixation, and improved airway access. The procedure for establishing the various fields differs from the prone approach. In this paper, we describe the methodology to achieve successful supine positioning.

  15. Pneumothorax in a Single Lung Patient

    E-Print Network [OSTI]

    Sauneuf, Bertrand; Champigneulle, Benoit; Pène, Frédéric

    2012-01-01T23:59:59.000Z

    Pneumothorax in a Single Lung Patient Bertrand Sauneuf, MD*encapsulation of the diseased lung and containment of therevealed a single right lung expanded through the entire

  16. NUMERICAL OPTIMIZATION METHODS FOR BLIND ...

    E-Print Network [OSTI]

    2012-02-11T23:59:59.000Z

    molecular structure determination, International Journal of High Performance Computing. Applications, 24 (2010), pp. 117–135. [10] J. Frank, Three-

  17. Protecting Patients, Preserving Integrity, Advancing Health

    E-Print Network [OSTI]

    Chapman, Michael S.

    values of protecting the integrity of their research, the well being of the human subjects whoProtecting Patients, Preserving Integrity, Advancing Health: Accelerating the Implementation of COI of Interest in Human Subjects Research February 2008 #12;Protecting Patients, Preserving Integrity, Advancing

  18. SU-E-J-261: Statistical Analysis and Chaotic Dynamics of Respiratory Signal of Patients in BodyFix

    SciTech Connect (OSTI)

    Michalski, D; Huq, M; Bednarz, G; Lalonde, R; Yang, Y; Heron, D [University of Pittsburgh Medical Center, Pittsburgh, PA (United States)

    2014-06-01T23:59:59.000Z

    Purpose: To quantify respiratory signal of patients in BodyFix undergoing 4DCT scan with and without immobilization cover. Methods: 20 pairs of respiratory tracks recorded with RPM system during 4DCT scan were analyzed. Descriptive statistic was applied to selected parameters of exhale-inhale decomposition. Standardized signals were used with the delay method to build orbits in embedded space. Nonlinear behavior was tested with surrogate data. Sample entropy SE, Lempel-Ziv complexity LZC and the largest Lyapunov exponents LLE were compared. Results: Statistical tests show difference between scans for inspiration time and its variability, which is bigger for scans without cover. The same is for variability of the end of exhalation and inhalation. Other parameters fail to show the difference. For both scans respiratory signals show determinism and nonlinear stationarity. Statistical test on surrogate data reveals their nonlinearity. LLEs show signals chaotic nature and its correlation with breathing period and its embedding delay time. SE, LZC and LLE measure respiratory signal complexity. Nonlinear characteristics do not differ between scans. Conclusion: Contrary to expectation cover applied to patients in BodyFix appears to have limited effect on signal parameters. Analysis based on trajectories of delay vectors shows respiratory system nonlinear character and its sensitive dependence on initial conditions. Reproducibility of respiratory signal can be evaluated with measures of signal complexity and its predictability window. Longer respiratory period is conducive for signal reproducibility as shown by these gauges. Statistical independence of the exhale and inhale times is also supported by the magnitude of LLE. The nonlinear parameters seem more appropriate to gauge respiratory signal complexity since its deterministic chaotic nature. It contrasts with measures based on harmonic analysis that are blind for nonlinear features. Dynamics of breathing, so crucial for 4D-based clinical technologies, can be better controlled if nonlinear-based methodology, which reflects respiration characteristic, is applied. Funding provided by Varian Medical Systems via Investigator Initiated Research Project.

  19. Patient Poets; Illness from Inside Out

    E-Print Network [OSTI]

    McEntyre, Marilyn Chandler

    2012-01-01T23:59:59.000Z

    Karen Fiser. Reprinted with the poet’s permission. Untitled,Fead. Reprinted with the poet’s permission. “Waiting for theis taken from within. Patient Poets I am betrayed by the

  20. Environmental color for pediatric patient room design

    E-Print Network [OSTI]

    Park, Jin Gyu

    2009-05-15T23:59:59.000Z

    Color has a large impact on our psychological and physiological responses. This study examines the value of color as a component in a healing environment for pediatric patient rooms by measuring color preferences among healthy children, pediatric...

  1. Orthopedic Correction of Growing Retrognathic Hyperdivergent Patients

    E-Print Network [OSTI]

    Carrillo, Roberto

    2014-05-13T23:59:59.000Z

    The purpose of this prospective study was to determine whether dental intrusion is effective in treating growing retrognathic hyperdivergent patients without negatively affecting the roots and periodontal structures. The sample consisted of 17 (7...

  2. Willingness to treat HIV-positive patients at different stages of medical education and experience.

    E-Print Network [OSTI]

    Radecki, S; Shapiro, J; Thrupp, L D; Gandhi, S M; Sangha, S S; Miller, R B

    1999-01-01T23:59:59.000Z

    patients and willingness to treat HIV-infected patients. Jprofessions students to treat patients with AIDS. Acad Medstu- dents' willingness to treat HIV-infected patients. Acad

  3. Noise-Enhanced Balance Control in Patients with Diabetes and Patients with Stroke

    E-Print Network [OSTI]

    Collins, James J.

    with stroke, resulting in diminished motor performance. Recently, it has been shown that input noise can mechanical noise applied to the soles of the feet via vibrating insoles can be used to improve quietNoise-Enhanced Balance Control in Patients with Diabetes and Patients with Stroke Attila A

  4. Whole-Body Magnetic Resonance Angiography at 3 Tesla Using a Hybrid Protocol in Patients with Peripheral Arterial Disease

    SciTech Connect (OSTI)

    Nielsen, Yousef W., E-mail: yujwni01@heh.regionh.d [University Hospital at Herlev, Department of Radiology (Denmark); Eiberg, Jonas P., E-mail: Eiberg@dadlnet.d [Rigshospitalet, Department of Vascular Surgery (Denmark); Logager, Vibeke B., E-mail: viloe@heh.regionh.d [University Hospital at Herlev, Department of Radiology (Denmark); Schroeder, Torben V., E-mail: tvs@dadlnet.d [Rigshospitalet, Department of Vascular Surgery (Denmark); Just, Sven, E-mail: svju@geh.regionh.d [University Hospital at Gentofte, Department of Radiology (Denmark); Thomsen, Henrik S., E-mail: hentho01@heh.regionh.d [University Hospital at Herlev, Department of Radiology (Denmark)

    2009-09-15T23:59:59.000Z

    The purpose of this study was to determine the diagnostic performance of 3T whole-body magnetic resonance angiography (WB-MRA) using a hybrid protocol in comparison with a standard protocol in patients with peripheral arterial disease (PAD). In 26 consecutive patients with PAD two different protocols were used for WB-MRA: a standard sequential protocol (n = 13) and a hybrid protocol (n = 13). WB-MRA was performed using a gradient echo sequence, body coil for signal reception, and gadoterate meglumine as contrast agent (0.3 mmol/kg body weight). Two blinded observers evaluated all WB-MRA examinations with regard to presence of stenoses, as well as diagnostic quality and degree of venous contamination in each of the four stations used in WB-MRA. Digital subtraction angiography served as the method of reference. Sensitivity for detecting significant arterial disease (luminal narrowing {>=} 50%) using standard-protocol WB-MRA for the two observers was 0.63 (95%CI: 0.51-0.73) and 0.66 (0.58-0.78). Specificities were 0.94 (0.91-0.97) and 0.96 (0.92-0.98), respectively. In the hybrid protocol WB-MRA sensitivities were 0.75 (0.64-0.84) and 0.70 (0.58-0.8), respectively. Specificities were 0.93 (0.88-0.96) and 0.95 (0.91-0.97). Interobserver agreement was good using both the standard and the hybrid protocol, with {kappa} = 0.62 (0.44-0.67) and {kappa} = 0.70 (0.59-0.79), respectively. WB-MRA quality scores were significantly higher in the lower leg using the hybrid protocol compared to standard protocol (p = 0.003 and p = 0.03, observers 1 and 2). Distal venous contamination scores were significantly lower with the hybrid protocol (p = 0.02 and p = 0.01, observers 1 and 2). In conclusion, hybrid-protocol WB-MRA shows a better diagnostic performance than standard protocol WB-MRA at 3 T in patients with PAD.

  5. Patient-centric Hurricane Evacuation Management System

    E-Print Network [OSTI]

    Cardei, Mihaela

    Patient-centric Hurricane Evacuation Management System Arny Ambrose, Mihaela Cardei, and Ionut--In the United States, there has been a high incidence of hurricanes over the past decade. Before a hurricane investigate the characteristics and challenges associated with hurricane evacuation of health care centers

  6. Copyright Siemens Business Services Patient Tracking

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    © Copyright Siemens Business Services Patient Tracking based on RFID labels ThomasThomas JellJell Principal ConsultantPrincipal Consultant DirectorDirector SBS SI 22 #12;2 Siemens One Projects · SBS Companies / Goverment #12;3 Siemens One Projects · Showroom GfM Furniture · Designer Knock Offs ( · Theft

  7. Health Insurance & Patient-Centered Medical Homes

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    insurance coverage for routine care for patients who undergo clinical trials · Health Care Cost Database- studying the creation of an all-payer, all-claims database that will improve health care delivery in Montana by creating access to data on health care costs and quality #12;The PCMH Initiative Under DPHHS

  8. Longitudinal Medication Usage in Alzheimer Disease Patients

    E-Print Network [OSTI]

    on ChEIs.1,5­8 In addition to ChEIs and memantine, AD patients are likely to be prescribed other examined in detail patterns of cholinesterase inhibitors (ChEIs) and memantine use and explored characteristics on ChEIs/ memantine use over time. Independent variables included measures of function, cognition

  9. What Lung Cancer Patients Need to Know

    E-Print Network [OSTI]

    Kaski, Samuel

    What Lung Cancer Patients Need to Know About Bone Health A Publication of The Bone and Cancer Foundation #12;Contents THIS PUBLICATION PROVIDES IMPORTANT INFORMATION ABOUT THE RELATIONSHIP BETWEEN LUNG CANCER AND BONE HEALTH. HOW BONE WORKS (PAGE 2). WHAT LUNG CANCER CAN DO TO BONE (PAGE 2). TREATING BONE

  10. Clopidogrel Responsiveness in Patients Undergoing Peripheral Angioplasty

    SciTech Connect (OSTI)

    Pastromas, Georgios, E-mail: geopastromas@gmail.com; Spiliopoulos, Stavros, E-mail: stavspiliop@upatras.gr; Katsanos, Konstantinos, E-mail: katsanos@med.upatras.gr; Diamantopoulos, Athanasios, E-mail: adiamantopoulos@gmail.com; Kitrou, Panagiotis, E-mail: panoskitrou@gmail.com; Karnabatidis, Dimitrios, E-mail: karnaby@med.upatras.gr; Siablis, Dimitrios, E-mail: siablis@med.upatras.gr [Patras University Hospital, Department of Interventional Radiology (Greece)] [Patras University Hospital, Department of Interventional Radiology (Greece)

    2013-12-15T23:59:59.000Z

    Purpose: To investigate the incidence and clinical significance of platelet responsiveness in patients receiving clopidogrel after peripheral angioplasty procedures. Materials and Methods: This prospective study included patients receiving antiplatelet therapy with clopidogrel 75 mg after infrainguinal angioplasty or stenting and who presented to our department during routine follow-up. Clopidogrel responsiveness was tested using the VerifyNow P2Y12 Assay. Patients with residual platelet reactivity units (PRU) {>=} 235 were considered as nonresponders (NR group NR), whereas patients with PRU < 235 were considered as normal (responders [group R]). Primary end points were incidence of resistance to clopidogrel and target limb reintervention (TLR)-free survival, whereas secondary end points included limb salvage rates and the identification of any independent predictors influencing clinical outcomes. Results: In total, 113 consecutive patients (mean age 69 {+-} 8 years) with 139 limbs were enrolled. After clopidogrel responsiveness analysis, 61 patients (53.9 %) with 73 limbs (52.5 %) were assigned to group R and 52 patients (46.1 %) with 66 limbs (47.5 %) to group NR. Mean follow-up interval was 27.7 {+-} 22.9 months (range 3-95). Diabetes mellitus, critical limb ischemia, and renal disease were associated with clopidogrel resistance (Fisher's exact test; p < 0.05). According to Kaplan-Meier analysis, TLR-free survival was significantly superior in group R compared with group NR (20.7 vs. 1.9 %, respectively, at 7-year follow-up; p = 0.001), whereas resistance to clopidogrel was identified as the only independent predictor of decreased TLR-free survival (hazard rate 0.536, 95 % confidence interval 0.31-0.90; p = 0.01). Cumulative TLR rate was significantly increased in group NR compared with group R (71.2 % [52 of 73] vs. 31.8 % [21 of 66], respectively; p < 0.001). Limb salvage was similar in both groups. Conclusion: Clopidogrel resistance was related with significantly more repeat interventions after peripheral angioplasty procedures.

  11. RESEARCH PATIENT CARE COSTS --NIH(RC)-11 (a) Research patient care costs are the costs of routine and ancillary services provided to patients

    E-Print Network [OSTI]

    Baker, Chris I.

    RESEARCH PATIENT CARE COSTS -- NIH(RC)-11 (a) Research patient care costs are the costs of routine) Patient care costs shall be computed in a manner consistent with the principles and procedures used by the Medicare Program for determining the part of Medicare reimbursement based on reasonable costs

  12. Elevated high-density lipoprotein cholesterol and cardiovascular mortality in maintenance hemodialysis patients

    E-Print Network [OSTI]

    Moradi, H; Streja, E; Kashyap, ML; Vaziri, ND; Fonarow, GC; Kalantar-Zadeh, K

    2014-01-01T23:59:59.000Z

    of mortality in maintenance hemo- dialysis patients. Clin Jindices and survival in maintenance hemodialysis patients

  13. Reporting, Publication or Broadcast Release Patient Name: ________________________________________________ Date of Birth: _______

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    (s) for various purposes. You (or the patient's) written permission is voluntary and the care you (or the patient AIDS/HIV, Drug/Alcohol Abuse, Mental Health, Sexual Assault, Child Abuse, or Disabilities. I impose

  14. adult saudi patients: Topics by E-print Network

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

    adult psychiatric patients. Open Access Theses and Dissertations Summary: ??Background: Knowledge about attention-deficithyperactivity disorder (ADHD) and autism spectrum...

  15. UPDATE ON THE MODERN TREATMENT OF HYPERTENSION IN PATIENTS WITH

    E-Print Network [OSTI]

    Oliver, Douglas L.

    UPDATE ON THE MODERN TREATMENT OF HYPERTENSION IN PATIENTS WITH CARDIOVASCULAR DISEASE Antihypertensive Therapy in Cardiovascular Disease The management of the high-risk patient with hypertension has mellitus. Numerous clinical trials in tens of thousands of hypertensive patients with increased

  16. UNO Student Health Services Patient's Bill of Rights and Responsibilities

    E-Print Network [OSTI]

    Kulp, Mark

    health care program. UNO Student Health Services Human Performance Center Rm. 109 (504) 280-6387 wwwUNO Student Health Services Patient's Bill of Rights and Responsibilities Patient's Bill of Rights to the Health Service regarding its operations and the right to change caregivers for any reason. #12;Patient

  17. Electrochemotherapy with Cisplatin: Clinical Experience in Malignant Melanoma Patients1

    E-Print Network [OSTI]

    Ljubljana, University of

    Electrochemotherapy with Cisplatin: Clinical Experience in Malignant Melanoma Patients1 Gregor cisplatin adminis- tration on cutaneous tumor nodules in malignant melanoma patients. In 10 patients, 133 that electrochemotherapy with cisplatin is a highly effective approach for treatment of cutaneous malignant melanoma

  18. Patient position verification using small IMRT fields

    SciTech Connect (OSTI)

    Bol, G. H.; Heide, U. A. van der; Nederveen, A. J.; Kotte, A. N. T. J.; Lagendijk, J. J. W. [Department of Radiotherapy, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht (Netherlands)

    2006-07-15T23:59:59.000Z

    A commonly used approach to quantify and minimize patient setup errors is by using electronic portal imaging devices (EPIDs). The position of the tumor can be verified indirectly by matching the bony anatomy to a reference image containing the same structures. In this paper we present two off-line methods for detecting the position of the bony anatomy automatically, even if every single portal image of each segment of an IMRT treatment beam contains insufficient matching information. Extra position verification fields will no longer be necessary, which reduces the total dose to the patient. The first method, the stack matching method (SMM), stacks the portal image of each segment of a beam to a three dimensional (3D) volume, and this volume is subsequently used during the matching phase. The second method [the averaged projection matching method (APMM)], is a simplification of the first one, since the initially created volume is reduced again to a 2D artificial image, which speeds up the matching procedure considerably, without a significant loss of accuracy. Matching is based on normalized mutual information. We demonstrate our methods by comparing them to existing matching routines, such as matching based on the largest segment. Both phantom and patient experiments show that our methods are comparable with the results obtained from standard position verification methods. The matches are verified by means of visual inspection. Furthermore, we show that when a distinct area of 40-60 cm{sup 2} of the EPID is exposed during one treatment beam, both SMM and APMM are able to deliver a good matching result.

  19. E-Print Network 3.0 - adult patients attending Sample Search...

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

    FIRST YEAR CLINIC ROTATIONS Inpatient unit Summary: to evaluate scheduled clinic and infusion center patients along with an attending provider. Patients seen... of all patients on...

  20. Tetramerization domain mutations in KCNA5 Identified in pulmonary arterial hypertension patients affect channel kinetics and cause abnormal subcellular localization

    E-Print Network [OSTI]

    Burg, Elyssa D.

    2009-01-01T23:59:59.000Z

    in pulmonary arterial hypertension patients affect channelin Pulmonary Arterial Hypertension Patients Affect Channelin Pulmonary Arterial Hypertension Patients Causes

  1. Can Big Pharma Behavior Change to Benefit Patients?

    SciTech Connect (OSTI)

    Rosenberg, Saul; Chu, Gilbert

    2005-03-09T23:59:59.000Z

    Professors Rosenberg and Chu will discuss how the behavior of large pharmaceutical companies can sometimes compromise the needs of patients. The behavior includes strategies for lobbying Congress, exploiting patent law, targeting large consumer markets, creating demand from patients, and influencing physicians. In some cases, this behavior has created ethical and legal problems. The talk will conclude with a discussion of possible ways to encourage changes that will benefit patients.

  2. affects patient survival: Topics by E-print Network

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

    1515 Holcombe Blvd, Houston, TX 77030 EGFR in prognostic prediction is further suggested in patients with breast carcinomas and oropharyngeal Cai, Long 45 Implementation of...

  3. adult patients treated: Topics by E-print Network

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

    For those with gender dysphoria, psychological assessment and psychotherapy are suggested and sometimes required. Your role in the GID patients gender exploration and...

  4. High prevalence of hypothyroidism in male patients with cutaneous melanoma

    E-Print Network [OSTI]

    Shah, Monica; Orengo, Ida F; Rosen, Ted

    2006-01-01T23:59:59.000Z

    releasing hormone by human melanoma and nevi. Clin Cancerpatients with cutaneous melanoma. Oncol Rep 2003 Sep-Oct;in patients with uveal melanoma. Melanoma Res 2001 Dec;11(

  5. affect patient adherence: Topics by E-print Network

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

    infusion. A Randomized Comparison 10 Influence of Traits, Coping, Affect, and Illness Knowledge on Adherence among Patients in Cardiac Rehabilitation. Open Access Theses and...

  6. adult patients suffering: Topics by E-print Network

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

    Shirley 143 Prevalence of Human Immunodeficiency Virus Infection, Risk Behavior, and HIV Knowledge Among Tuberculosis Patients Biology and Medicine Websites Summary: Tuberculosis...

  7. acute stroke patients: Topics by E-print Network

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

    Bloom; Claiborne Johnston 44 Hypotension as a risk factor for acute kidney injury in ICU patients MIT - DSpace Summary: In the context of critical illness, hypotension may be...

  8. Patient education for phosphorus management in chronic kidney disease

    E-Print Network [OSTI]

    Kalantar-Zadeh, Kamyar

    2013-01-01T23:59:59.000Z

    comparative trial versus calcium carbonate. Nephron Clinin predialysis patients on calcium carbonate or sevelamer.of sevelamer and calcium carbonate effects on cardiovascular

  9. deficit in neural correlate of reality monitoring in schizophrenia patients

    E-Print Network [OSTI]

    Vinogradov, Sophia

    2008-01-01T23:59:59.000Z

    None declared. Address correspondence to Sophia Vinogradov.Email: Sophia. vinogradov@ucsf.edu. References Bacon E,in Schizophrenia Patients Sophia Vinogradov 1,2 , Tracy L.

  10. atomoxetine improves patient: Topics by E-print Network

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

    and Patient Safety was founded in the Department of Medicine in communication and care coordination and electronic documentation as well as interventions to reduce hospital...

  11. advice improves patient: Topics by E-print Network

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

    INSURANCE HOSPITALS & CLINICS DOCTORS PRIVATE TREATMENT DENTISTRY COSMETIC SURGERY CARE OF THE ELDERLY WORKPLACE HEALTH OTHER SERVICES PATIENT ADVICE HEALTH STORE HEALTH JOBS...

  12. adult osas patients: Topics by E-print Network

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

    A combined neuropsychological and brain imaging study of obstructive sleep apnea Running head: Cognitive and brain imaging study of OSA patients Physics Websites Summary: 1 A...

  13. apnea syndrome patients: Topics by E-print Network

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

    A combined neuropsychological and brain imaging study of obstructive sleep apnea Running head: Cognitive and brain imaging study of OSA patients Physics Websites Summary: 1 A...

  14. adult patients included: Topics by E-print Network

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

    to support family caregivers. Buddy expands a safety net for dementia patients and family caregivers who choose home vs. institutional care. Methods: Six elderly adult...

  15. adult nephrology patients: Topics by E-print Network

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

    to support family caregivers. Buddy expands a safety net for dementia patients and family caregivers who choose home vs. institutional care. Methods: Six elderly adult...

  16. adult patients recorded: Topics by E-print Network

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

    to support family caregivers. Buddy expands a safety net for dementia patients and family caregivers who choose home vs. institutional care. Methods: Six elderly adult...

  17. Hospital Readmission in General Medicine Patients: A Prediction Model

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    to the department of medicine as a screening tool forquality of care problems. Medicine. 2008;87:294–300. 3.Readmission in General Medicine Patients: A Prediction Model

  18. adult cancer patients: Topics by E-print Network

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

    Cancer Center's Adult Patient & Family Advisory Council Page 1 of 3 and compassionate health care provided by Dana-FarberBrigham and Women's Cancer Center. Working in active...

  19. arthritis egyptian patients: Topics by E-print Network

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

    pain processing. Chronic arthritis pain Apkarian, A. Vania 2 Team rehabilitation and health care utilization in chronic inflammatory arthritis patients. Open Access Theses and...

  20. arthroplasty patients benefit: Topics by E-print Network

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

    D. 3 Student Clinic Patient Benefits Biology and Medicine Websites Summary: oral health care rehabilitation at the LSUHSC School of Dentistry. In addition to services offered...

  1. Acute Thrombotic Mesenteric Ischemia: Primary Endovascular Treatment in Eight Patients

    SciTech Connect (OSTI)

    Gagniere, Johan [CHU Estaing, Digestive Surgery Department (France); Favrolt, Gregory; Alfidja, Agaiecha; Kastler, Adrian; Chabrot, Pascal; Cassagnes, Lucie [EA 3295 Universite d'Auvergne Clermont 1, Radiology B, Centre Hospitalier Universitaire G Montpied (France); Buc, Emmanuel; Pezet, Denis [CHU Estaing, Digestive Surgery Department (France); Boyer, Louis, E-mail: lboyer@chu-clermontferrand.fr [EA 3295 Universite d'Auvergne Clermont 1, Radiology B, Centre Hospitalier Universitaire G Montpied (France)

    2011-10-15T23:59:59.000Z

    Introduction: The purpose of this study was to evaluate our experience with initial percutaneous transluminal angioplasty (PTA) {+-} stenting as valuable options in the acute setting. Methods: Between 2003 and 2008, eight patients with abdominal angio-MDCT-scan proven thrombotic AMI benefited from initial PTA {+-} stenting. We retrospectively assessed clinical and radiological findings and their management. Seven patients presented thrombosis of the superior mesenteric artery, and in one patient both mesenteric arteries were occluded. All patients underwent initial PTA and stenting, except one who had balloon PTA alone. One patient was treated by additional in situ thrombolysis. Results: Technical success was obtained in all patients. Three patients required subsequent surgery (37.5%), two of whom had severe radiological findings (pneumatosis intestinalis and/or portal venous gas). Two patients (25%) died: both had NIDD, an ASA score {>=}4, and severe radiologic findings. Satisfactory arterial patency was observed after a follow-up of 15 (range, 11-17) months in five patients who did not require subsequent surgery, four of whom had abdominal guarding but no severe CT scan findings. One patient had an ileocecal stenosis 60 days after the procedure. Conclusions: Initial PTA {+-} stenting is a valuable alternative to surgery for patients with thrombotic AMI even for those with clinical peritoneal irritation signs and/or severe radiologic findings. Early surgery is indicated if clinical condition does not improve after PTA. The decision of a subsequent surgery must be lead by early clinical status reevaluation. In case of underlying atherosclerotic lesion, stenting should be performed after initial balloon dilatation.

  2. Helping Doctors and Patients Make Sense of Health Statistics

    E-Print Network [OSTI]

    Heubach, Silvia

    Helping Doctors and Patients Make Sense of Health Statistics Gerd Gigerenzer,1,2 Wolfgang, patients, journalists, and politi- cians alike do not understand what health statistics mean or draw wrong conclusions without noticing. Collective statistical illiteracy refers to the widespread inability

  3. Patient Controlled Encryption: Ensuring Privacy of Electronic Medical Records

    E-Print Network [OSTI]

    Lauter, Kristin

    .S. President Barack Obama signed into law the American Recovery and Reinvestment Act of 2009, which containedPatient Controlled Encryption: Ensuring Privacy of Electronic Medical Records Josh Benaloh, Melissa,melissac,horvitz,klauter}@microsoft.com ABSTRACT We explore the challenge of preserving patients' privacy in electronic health record systems. We

  4. UK Clinical Trials Gateway Public and Patient Survey 2012

    E-Print Network [OSTI]

    Diggle, Peter J.

    UK Clinical Trials Gateway Public and Patient Survey 2012 January 2013 #12;This is a report and recommendations of the UK Clinical Trials Gateway (UKCTG) Public and Patient Feedback Survey 2012 The report-to-date information about clinical trials, which are currently running or have run in the UK. The survey was hosted

  5. Atrioventricular blood flow simulation based on patient-specific data

    E-Print Network [OSTI]

    Sussman, Mark

    Atrioventricular blood flow simulation based on patient-specific data Viorel Mihalef1 , Dimitris blood flow in- side the heart, usable with geometric models of the heart from patient- specific data. The method is geared toward realistic simulation of blood flow, taking into account not only heart wall

  6. Les documents et les annotations du dossier patient hospitalier

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Les documents et les annotations du dossier patient hospitalier Sandra Bringay* , Catherine Barry hospitalier leur permettant de reproduire toutes les pratiques qu'ils réalisent avec le dossier papier. Nous tools for managing the patient record, allowing them to reproduce all the practices they realised

  7. Blind physics: a catalogue of unverified hypotheses

    E-Print Network [OSTI]

    Vladimir Dzhunushaliev

    2013-01-26T23:59:59.000Z

    Some hypotheses in modern theoretical physics that have not any experimental verification are listed. The goal of the paper is not to criticize or be lawyers any of these hypotheses. The purpose is focus physicists attention on that now there are too much hypotheses which are not confirmed experimentally.

  8. THE BLIND SIMULATION PROBLEM and REGENERATIVE PROCESSES

    E-Print Network [OSTI]

    Bucklew, James Antonio

    Processes 1 #12; 1 Introduction 1.1 Simulation and importance sampling Large and/or nonlinear stochastic on the order of 10 \\Gamma6 are quite common in stochastic systems. It is clear that a direct simulation(Z i ): The ratio p(\\Delta)=q(\\Delta) will be called the weight function of the importance sam

  9. Blind Source Separation of Neuromagnetic Responses

    E-Print Network [OSTI]

    Pearlmutter, Barak

    of New Mexico, Albuquerque, NM 87131 Abstract Magnetoencephalography (MEG) is a functional brain imaging resolution of MEG compared to fMRI and PET (milliseconds vs. seconds and tens of seconds) makes it ideal

  10. Prostate and Patient Intrafraction Motion: Impact on Treatment Time-Dependent Planning Margins for Patients With Endorectal Balloon

    SciTech Connect (OSTI)

    Steiner, Elisabeth, E-mail: elisabeth.steiner@akhwien.at [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Georg, Dietmar [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna (Austria); Goldner, Gregor [Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna (Austria); Stock, Markus [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna (Austria)

    2013-07-15T23:59:59.000Z

    Purpose: To investigate intrafraction prostate and patient motion during different radiation therapy treatments as a function of treatment time; included were prostate patients with an endorectal balloon (ERB). Margins accounting for setup uncertainties and intrafraction motion were determined. Methods and Materials: The study included 17 patients undergoing prostate cancer radiation therapy. All patients received 3 fiducial gold markers implanted in the prostate and were then immobilized in the supine position with a knee support and treated with an ERB. Twelve patients with intermediate risk for pelvic lymph node metastases received intensity modulated radiation therapy (IMRT), and 5 patients at low risk received a 4-field box treatment. After setup based on skin marks, patients were imaged with a stereoscopic imaging system. If the marker displacement exceeded a 3-mm tolerance relative to planning computed tomography, patients were shifted and verification images were taken. All patients underwent additional imaging after treatment; IMRT patients also received additional imaging at halftime of treatment. Prostate and bone drifts were evaluated as a function of treatment time for more than 600 fractions, and margins were extracted. Results: Patient motion evaluated by bone match was strongly patient dependent but in general was smallest in the superior-inferior (SI) direction. Prostate drifts were less patient dependent, showing an increase with treatment time in the SI and anterior-posterior (AP) directions. In the lateral (LAT) direction, the prostate stayed rather stable. Mean treatment times were 5.5 minutes for 4-field box, 10 minutes for 5-field boost IMRT, and 15 minutes or more for 9-field boost and 9-field pelvic IMRT treatments. Margins resulted in 2.2 mm, 3.9 mm, and 4.3 mm for 4-field box; 3.7 mm, 2.6 mm, and 3.6 mm for 5-field boost IMRT; 2.3 mm, 3.9 mm, and 6.2 mm for 9-field boost IMRT; and 4.2 mm, 5.1 mm, and 6.6 mm for 9-field pelvic IMRT in the LAT, SI, and AP directions, respectively. Conclusion: Intrafraction prostate and patient displacement increased with treatment time, showing different behaviors for the single directions of movement. Repositioning of the patients during long treatments or shorter treatment times will be necessary to further reduce the treatment margin.

  11. Concurrent Chemoradiotherapy Improves Survival in Patients With Hypopharyngeal Cancer

    SciTech Connect (OSTI)

    Paximadis, Peter, E-mail: ppaximad@med.wayne.edu [Department of Radiation Oncology, Wayne State University, Detroit, MI (United States); Yoo, George; Lin, Ho-Sheng; Jacobs, John [Department of Otolaryngology, Barbara Ann Karmanos Cancer Institute, Detroit, MI (United States); Sukari, Ammar [Department of Medical Oncology, Barbara Ann Karmanos Cancer Institute, Detroit, MI (United States); Dyson, Greg [Department of Oncology, Barbara Ann Karmanos Cancer Institute, Detroit, MI (United States); Christensen, Michael; Kim, Harold [Department of Radiation Oncology, Wayne State University, Detroit, MI (United States)

    2012-03-15T23:59:59.000Z

    Purpose: To retrospectively review our institutional experience with hypopharyngeal carcinoma with respect to treatment modality. Methods and Materials: A total of 70 patients with hypopharyngeal cancer treated between 1999 and 2009 were analyzed for functional and survival outcomes. The treatments included surgery alone (n = 5), surgery followed by radiotherapy (RT) (n = 3), surgery followed by chemoradiotherapy (CRT) (n = 13), RT alone (n = 2), CRT alone (n = 22), induction chemotherapy followed by RT (n = 3), and induction chemotherapy followed by CRT (n = 22). Results: The median follow-up was 18 months. The median overall survival and disease-free survival for all patients was 28.3 and 17.6 months, respectively. The 1- and 2-year local control rate for all patients was 87.1% and 80%. CRT, given either as primary therapy or in the adjuvant setting, improved overall survival and disease-free survival compared with patients not receiving CRT. The median overall survival and disease-free survival for patients treated with CRT was 36.7 and 17.6 months vs. 14.0 and 8.0 months, respectively (p < .01). Of the patients initially treated with an organ-preserving approach, 4 (8.2%) required salvage laryngectomy for local recurrence or persistent disease; 8 (16.3%) and 12 (24.5%) patients were dependent on a percutaneous gastrostomy and tracheostomy tube, respectively. The 2-year laryngoesophageal dysfunction-free survival rate for patients treated with an organ-preserving approach was estimated at 31.7%. Conclusions: Concurrent CRT improves survival in patients with hypopharyngeal cancer. CRT given with conventional radiation techniques yields poor functional outcomes, and future efforts should be directed at determining the feasibility of pharyngeal-sparing intensity-modulated radiotherapy in patients with hypopharyngeal tumors.

  12. Determinants of Patient Satisfaction During Receipt of Radiation Therapy

    SciTech Connect (OSTI)

    Famiglietti, Robin M., E-mail: rfamigli@mdanderson.org; Neal, Emily C.; Edwards, Timothy J.; Allen, Pamela K.; Buchholz, Thomas A.

    2013-09-01T23:59:59.000Z

    Purpose: To evaluate the correlations and relative contributions of components of a radiation oncology-specific patient satisfaction survey to their overall satisfaction scores. Methods and Materials: From September 2006 through August 2012, we prospectively collected data from 8069 patients receiving radiation treatments with a 26-question survey. Each question was rated on a 10-point Likert scale. We analyzed the correlation between scores for each question and the overall satisfaction question. We also dichotomized the scores to reflect satisfaction versus dissatisfaction and used logistic regression to assess the relationship between items in 4 domains (the patient–provider relationship, access and environmental issues, wait times, and educational information) and overall satisfaction. Results: Scores on all questions correlated with overall patient satisfaction scores (P<.0001). Satisfaction with patient–provider relationships had the greatest influence on overall satisfaction (R{sup 2}=0.4219), followed by wait times (R{sup 2}=0.4000), access/environment (R{sup 2}=0.3837), and patient education (R{sup 2}=0.3700). The specific variables with the greatest effect on patient satisfaction were the care provided by radiation therapists (odds ratio 1.91) and pain management (odds ratio 1.29). Conclusions: We found that patients' judgment of provider relationships in an outpatient radiation oncology setting were the greatest contributors to their overall satisfaction ratings. Other measures typically associated with patient satisfaction (phone access, scheduling, and ease of the check-in process) correlated less strongly with overall satisfaction. These findings may be useful for other practices preparing to assess patient ratings of quality of care.

  13. Patient Positioning Based on a Radioactive Tracer Implanted in Patients With Localized Prostate Cancer: A Performance and Safety Evaluation

    SciTech Connect (OSTI)

    Kruijf, Willy J.M. de, E-mail: kruijf.de.w@bvi.nl [Institute Verbeeten, Tilburg (Netherlands); Verstraete, Jan [Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven (Belgium)] [Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven (Belgium); Neustadter, David [Navotek Medical Ltd, Yokneam (Israel)] [Navotek Medical Ltd, Yokneam (Israel); Corn, Benjamin W. [Tel Aviv Medical Center, Tel Aviv (Israel)] [Tel Aviv Medical Center, Tel Aviv (Israel); Hol, Sandra; Venselaar, Jack L.M. [Institute Verbeeten, Tilburg (Netherlands)] [Institute Verbeeten, Tilburg (Netherlands); Davits, Rob J.; Wijsman, Bart P. [TweeSteden Hospital, Tilburg (Netherlands)] [TweeSteden Hospital, Tilburg (Netherlands); Van den Bergh, Laura; Budiharto, Tom [Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven (Belgium)] [Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven (Belgium); Oyen, Raymond [Department of Radiology, University Hospitals Leuven, Leuven (Belgium)] [Department of Radiology, University Hospitals Leuven, Leuven (Belgium); Haustermans, Karin [Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven (Belgium)] [Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven (Belgium); Poortmans, Philip M.P. [Institute Verbeeten, Tilburg (Netherlands)] [Institute Verbeeten, Tilburg (Netherlands)

    2013-02-01T23:59:59.000Z

    Purpose: To evaluate the performance and safety of a radiation therapy positioning system (RealEye) based on tracking a radioactive marker (Tracer) implanted in patients with localized prostate cancer. Methods and Materials: We performed a single-arm multi-institutional trial in 20 patients. The iridium-192 ({sup 192}Ir)-containing Tracer was implanted in the patient together with 4 standard gold seed fiducials. Patient prostate-related symptoms were evaluated with the International Prostate Symptom Score (IPSS) questionnaire. Computed tomography (CT) was performed for treatment planning, during treatment, and after treatment to evaluate the migration stability of the Tracer. At 5 treatment sessions, cone beam CT was performed to test the positioning accuracy of the RealEye. Results: The Tracer was successfully implanted in all patients. No device or procedure-related adverse events occurred. Changes in IPSS scores were limited. The difference between the mean change in Tracer-fiducial distance and the mean change in fiducial-fiducial distance was -0.39 mm (95% confidence interval [CI] upper boundary, -0.22 mm). The adjusted mean difference between Tracer position according to RealEye and the Tracer position on the CBCT for all patients was 1.34 mm (95% CI upper boundary, 1.41 mm). Conclusions: Implantation of the Tracer is feasible and safe. Migration stability of the Tracer is good. Prostate patients can be positioned and monitored accurately by using RealEye.

  14. ascertain patient status: Topics by E-print Network

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

    fre- quently than expected, were compared on patient chromosomes, on normal Alper, Chester A. First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22...

  15. adult patient presenting: Topics by E-print Network

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

    M. D; Shahin Narooi M. D 2008-01-01 18 RESEARCH ARTICLE Open Access Prevalence of non Helicobacter pylori species in patients presenting with dyspepsia CiteSeer Summary:...

  16. adult patients presenting: Topics by E-print Network

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

    M. D; Shahin Narooi M. D 2008-01-01 18 RESEARCH ARTICLE Open Access Prevalence of non Helicobacter pylori species in patients presenting with dyspepsia CiteSeer Summary:...

  17. GASTRIC REFLUX IN MECHANICALLY VENTILATED GASTRIC FED ICU PATIENTS

    E-Print Network [OSTI]

    Schallom, Marilyn

    2013-08-31T23:59:59.000Z

    in ventilated patients is a major cause of ventilator associated pneumonia (VAP). Guidelines that recommend head of bed (HOB) elevation greater than 30? to prevent reflux, aspiration and VAP conflict with guidelines to prevent pressure ulcers which recommend HOB...

  18. Using patient­identifiable data for observational research and audit 

    E-Print Network [OSTI]

    Al-Shahi, Rustam; Warlow, Charles P

    2000-01-01T23:59:59.000Z

    Across the world rapid changes in the law, technology, and society are reshaping the way identifiable information about patients is handled. In Britain, doctors' longstanding common law duty of confidentiality to their ...

  19. Detecting and molecular profiling cancer cells in patients

    E-Print Network [OSTI]

    Peterson, Vanessa M. (Vanessa Marie)

    2013-01-01T23:59:59.000Z

    Although tumor cells obtained from human patients by surgical biopsy, image-guided intervention, blood draws or fluid drainage (paracentesis, thoracentesis) are a valuable source for analyzing tumor cells, conventional ...

  20. ambulatory cancer patients: Topics by E-print Network

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

    confidence interval, 1.005 to 1.420). This J Korean; Soc Coloproctol; Ryung Ah Lee 43 New Knowledge. AT THE UCONN CANCER CENTER, patients can benefit from the latest medical...

  1. acute burn patients: Topics by E-print Network

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

    W. Chapman, PhD1 , John N. Dowling, MD, MS1 , Gregory F. Cooper reports for identifying patients with an acute lower respiratory syndrome. METHODS As shown in Figure 1 related to...

  2. anemic cancer patients: Topics by E-print Network

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

    confidence interval, 1.005 to 1.420). This J Korean; Soc Coloproctol; Ryung Ah Lee 31 New Knowledge. AT THE UCONN CANCER CENTER, patients can benefit from the latest medical...

  3. admitted cancer patients: Topics by E-print Network

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

    9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 41 New Knowledge. AT THE UCONN CANCER CENTER, patients can benefit from the latest medical...

  4. advanced cancer patients: Topics by E-print Network

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

    confidence interval, 1.005 to 1.420). This J Korean; Soc Coloproctol; Ryung Ah Lee 65 New Knowledge. AT THE UCONN CANCER CENTER, patients can benefit from the latest medical...

  5. Les annotations pour grer les connaissances du dossier patient

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    disposent toujours pas d'outils informatiques de gestion du dossier patient hospitalier leur permettant de rencontrées pour relier les outils de soins aux outils de management et de recherche. En effet, d'un côté

  6. Observing Healthcare Interior Environments and the Effect on Patient Behavior 

    E-Print Network [OSTI]

    Rice, Courtney R.

    2010-07-14T23:59:59.000Z

    variables in the interior environments that have the greatest impact, whether positive or negative, on patients. The methods used to perform this research include: inspections of the facility, observations, and surveys. By combining all of these methods...

  7. Observing Healthcare Interior Environments and the Effect on Patient Behavior

    E-Print Network [OSTI]

    Rice, Courtney R.

    2010-07-14T23:59:59.000Z

    Healthcare facilities are recognizable as organized, clean, and functional environments that enable health practices to be carried out easily. However, most healthcare facilities do not take into account how design may affect patient welfare...

  8. asymptomatic patients act: Topics by E-print Network

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

    Key parts of the Patient Protection and Affordable Care Act, also known as the health care reform law, go into effect January 1, 2014. When this Computer Technologies and...

  9. Outcomes After Whole Brain Reirradiation in Patients With Brain Metastases

    SciTech Connect (OSTI)

    Son, Christina H. [School of Medicine, Duke University, Durham, NC (United States); Jimenez, Rachel; Niemierko, Andrzej; Loeffler, Jay S.; Oh, Kevin S. [Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA (United States); Shih, Helen A., E-mail: hshih@partners.org [Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA (United States)

    2012-02-01T23:59:59.000Z

    Purpose: Patients with brain metastases are often treated with whole brain radiation therapy (WBRT) for purposes of palliation. The treatment of those who experience subsequent intracranial disease progression can include a second course of WBRT, although there is controversy surrounding its safety and efficacy. This study examines the outcomes in patients at Massachusetts General Hospital who underwent reirradiation. Patients and Methods: We examined the medical records of 17 patients at Massachusetts General Hospital with brain metastases who were initially treated with WBRT between 2002 and 2008 and were subsequently retreated with a second course of WBRT. The median dose for the first course of WBRT was 35 Gy (range, 28-40 Gy), with a fraction size of 2 to 3 Gy (median, 2.5 Gy). The median dose at reirradiation was 21.6 Gy (range, 14-30 Gy), with a fraction size of 1.5 to 2 Gy (median, 1.8 Gy). Results: The second course of WBRT was administered upon radiographic disease progression in all patients. Of 10 patients with complete follow-up data, 8 patients experienced complete or partial symptom resolution, and 2 did not show clinical improvement. The time to radiographic progression was 5.2 months. The median overall survival for all patients after diagnosis of metastases was 24.7 months. The median survival time after initiation of reirradiation was 5.2 months (95% CI, 1.3-8.7). In 6 patients with stable extracranial disease, the median survival time after retreatment was 19.8 months (95% CI, 2.7-{infinity}), compared with 2.5 months (95% CI, 0.8-5.5) for those with extracranial disease progression (p = 0.05). Acute adverse reactions occurred in 70.5% of patients but were mild to moderate in severity. Conclusion: In select patients and especially those with stable extracranial disease, reirradiation may be an appropriate and effective intervention to provide symptomatic relief and slow intracranial disease progression. Side effects were minimal and did not cause substantial changes in quality of life.

  10. UNCONTROLLED SEIZURES AND BONE HEALTH AMONG ADULT EPILEPSY PATIENTS

    E-Print Network [OSTI]

    Yamada, Mikiko

    2013-12-31T23:59:59.000Z

    .g., menopause, liver disease, viral hepatitis, renal disease, chronic kidney disease, pancreatic diseases, primary hyperparathyroidism, hyperthyroidism, inflammatory conditions, rheumatoid arthritis, Paget’s disease, osteoporosis, alcoholism); patients... costs for fracture treatment secondary to osteoporosis are reported to be $19 billion in the United States and are predicted to increase to $25.3 billion by 2025.43 Thus, appropriate fracture prevention and risk reduction among patients with epilepsy...

  11. E-Print Network 3.0 - attitude patient safety Sample Search Results

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

    for: attitude patient safety Page: << < 1 2 3 4 5 > >> 1 BEHAVIORAL STANDARDS IN PATIENT CARE Approved by Summary: . B. The patient's safety, health, or welfare shall be protected...

  12. Prevalence, Health and Demographic Characteristics of Emergency Department Patients with Diabetes

    E-Print Network [OSTI]

    Menchine, Michael D; Vishwanath, Anita; Arora, Sanjay

    2010-01-01T23:59:59.000Z

    Results: 11.3% of the 1,303 patients surveyed had diabetes.Patients with diabetes were similar toED patients without diabetes with respect to gender,

  13. E-Print Network 3.0 - accurately differentiate patients Sample...

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

    patient - Provide emergency and multidisciplinary patientfocused... , comprehensive oral health care in a safe and efficient manner for a wide variety of patients, including ......

  14. Prediction of Sickle Cell Anemia Patient's Response to Hydroxyurea Treatment Using ARTMAP Network

    E-Print Network [OSTI]

    Valafar, Faramarz

    Prediction of Sickle Cell Anemia Patient's Response to Hydroxyurea Treatment Using ARTMAP Network distance-based ARTMAP (MART) network to the predication of sickle cell anemia patients' response

  15. Losing Sight of Ourselves: A Theoretical Analysis of Reality Television in the United States

    E-Print Network [OSTI]

    Collins, Megan E

    2014-06-11T23:59:59.000Z

    world from the moment we are born. Today, births are recorded, photographed, posted on Facebook and tweeted. The growth of a child is tracked and photographed then posted for all the parent’s Facebook friends to follow. Does the child have a choice... front for yourself? In today’s world we can present ourselves as we like via social media avenues such as Facebook. I want people to see me as this type of person who likes certain types of people, food, activities, movies, products. Does presenting...

  16. The classical limit of quantum optics: not what it seems at first sight

    E-Print Network [OSTI]

    Yakir Aharonov; Alonso Botero; Shmuel Nussinov; Sandu Popescu; Jeff Tollaksen; Lev Vaidman

    2013-05-01T23:59:59.000Z

    What is light and how to describe it has always been a central subject in physics. As our understanding has increased, so have our theories changed: Geometrical optics, wave optics and quantum optics are increasingly sophisticated descriptions, each referring to a larger class of phenomena than its predecessor. But how exactly are these theories related? How and when wave optics reduces to geometric optics is a rather simple problem. Similarly, how quantum optics reduces to wave optics has been considered to be a very simple business as well. It's not so. As we show here the classical limit of quantum optics is a far more complicated issue; it is in fact dramatically more involved and it requires a complete revision of all our intuitions. The revised intuitions can then serve as a guide to finding novel quantum effects.

  17. Argonne/iBIO Center partnership sets sights on new teaching methods...

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

    of pressure and combustion using fire syringes to simulate pistons in combustion engines. Photo credit: Mark Lopez, Argonne National Laboratory. Click to enlarge. Science...

  18. Evaluation of design and operating speeds for crest vertical curves with limited sight distance

    E-Print Network [OSTI]

    Russell, Charles William

    1994-01-01T23:59:59.000Z

    The Puerto Colon field is located in the Putumayo basin in southern Colombia, South America, and is operated by Empresa Colombiana de petroleos (ECOPETROL), which is the national oil company. The field produces from the Cretaceous sandstones...

  19. A line-of-sight voice communication system with optoelectric fibers

    E-Print Network [OSTI]

    Yang, Paul L

    2009-01-01T23:59:59.000Z

    Recently developed multi-material optoelectric fibers have showed great potential for use as photodetectors [1]. Such light-sensitive fibers are flexible and can be weaved through clothing with a seamless interface. Our ...

  20. It's Not What You Think Misunderstood Childhood Disorder May Threaten Sight

    E-Print Network [OSTI]

    the weaker eye. Corrective eyeglasses or contact lenses usually solve the problem. Blockage. A cataract, eye

  1. Integration of angular rate sensors for line of sight stabilization systems 

    E-Print Network [OSTI]

    Loe, Gregory Ross

    1997-01-01T23:59:59.000Z

    of integrating signals is provided. A comparison of the different methods applied to a particular system is also provided. It is shown that, in some cases, a simple parameter optimized filter can provide results almost as good as that of a filter. It is also...

  2. Losing Sight of Ourselves: Applying Durkheim. Giddens, Baudrillard and Vaknin to Reality Television

    E-Print Network [OSTI]

    Collins, Megan Elizabeth

    2011-02-22T23:59:59.000Z

    more disciplining? (Durkheim 1951:253). Consumerism allows for the possibility of accumulating an infinite amount of goods and possessions. When one is hungry, they usually stop eating when their body tells them ?hey, I?m full.? Yes, overeating... and jump at the chance to participate in reality television programs. Look at me, here I am, don?t you think I?m great?!? I need to know 13 that you think I?m great! Mark Andrejevic believes this phenomenon is both ?a fascination with voyeurism...

  3. Integration of angular rate sensors for line of sight stabilization systems

    E-Print Network [OSTI]

    Loe, Gregory Ross

    1997-01-01T23:59:59.000Z

    of integrating signals is provided. A comparison of the different methods applied to a particular system is also provided. It is shown that, in some cases, a simple parameter optimized filter can provide results almost as good as that of a filter. It is also...

  4. ChemCam laser sets its sights on first martian target

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization of SelectiveBrownFirst martian target

  5. Testing the Probability of Clear Line of Sight Models with ARM Observations

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our InstagramStructureProposedPAGESafetyTed Donat About Usof the Modified

  6. Multiferroic heroics put instant-on computing in sight > EMC2 News > The

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174More DocumentsofNOV 0Energy

  7. augments trail-mediated apoptosis: Topics by E-print Network

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

    device for patients Biology and Medicine Websites Summary: : augmented reality, field expander, head mounted device, mobility performance, night blindness, retinitisEvaluation...

  8. Emergency Department Crowding is Associated with Reduced Satisfaction Scores in Patients Discharged from the Emergency Department

    E-Print Network [OSTI]

    Tekwani, Karis L; Kerem, Yaniv; Mistry, Chintan D; Sayger, Brian M; Kulstad, Erik B

    2013-01-01T23:59:59.000Z

    Acad Time to Percutaneous Coronary Intervention for Acutetime to percutaneous coronary intervention for patients with

  9. CHAPTER: In-Situ Characterization of Stimulating Microelectrode Arrays: Study of an Idealized Structure Based on Argus II Retinal implantsBOOK TITLE: Implantable Neural Prostheses 2: Techniques and Engineering Approaches, D.M. Zhou and E. Greenbaum, Eds., Springer, NY 2009

    SciTech Connect (OSTI)

    Greenbaum, Elias [ORNL; Sanders, Charlene A [ORNL; Kandagor, Vincent [ORNL

    2010-01-01T23:59:59.000Z

    The development of a retinal prosthesis for artificial sight includes a study of the factors affecting the structural and functional stability of chronically implanted microelectrode arrays. Although neuron depolarization and propagation of electrical signals have been studied for nearly a century, the use of multielectrode stimulation as a proposed therapy to treat blindness is a frontier area of modern ophthalmology research. Mapping and characterizing the topographic information contained in the electric field potentials and understanding how this information is transmitted and interpreted in the visual cortex is still very much a work in progress. In order to characterize the electrical field patterns generated by the device, an in vitro prototype that mimics several of the physical and chemical parameters of the in vivo visual implant device was fabricated. We carried out multiple electrical measurements in a model 'eye,' beginning with a single electrode, followed by a 9-electrode array structure, both idealized components based on the Argus II retinal implants. Correlating the information contained in the topographic features of the electric fields with psychophysical testing in patients may help reduce the time required for patients to convert the electrical patterns into graphic signals.

  10. Eye Problems Approved by the UHS Patient Education Committee

    E-Print Network [OSTI]

    Yener, Aylin

    Eye Problems Approved by the UHS Patient Education Committee Reviewed 09/14/2011 Page 1 of 2 Most people take their eyes and eyesight for granted--that is, until they encounter eye problems. Whether it is an eye infection, accidental injury, allergic reaction, or a small blood vessel breaking, it is important

  11. Eye Problems Approved by the UHS Patient Education Committee

    E-Print Network [OSTI]

    Eye Problems Approved by the UHS Patient Education Committee Reviewed 10/09/2013 Page 1 of 2 Most people take their eyes and eyesight for granted--that is, until they encounter eye problems. Whether it is an eye infection, accidental injury, allergic reaction, or a small blood vessel breaking, it is important

  12. ity practitioners, academics, medical professionals, and patient advocacy

    E-Print Network [OSTI]

    Golbeck, Jennifer

    . Such guidelines for consistency and data sharing, common in other industries, would allow health- care health- care, frustrates health profession- als, and may harm patients. In the U.K., Microsoft's extensive Common User Interface guidelines are being adapted for use by the National Health Service

  13. Up-Regulated Dicer Expression in Patients with Cutaneous Melanoma

    E-Print Network [OSTI]

    Oliver, Douglas L.

    Up-Regulated Dicer Expression in Patients with Cutaneous Melanoma Zhihai Ma1 , Helen Swede2 , David clinically annotated controls and skin tumors consisting of melanocytic nevi (n = 71), a variety of melanomas Dicer in 81% of cutaneous, 80% of acrolentiginous and 96% of metastatic melanoma specimens compared

  14. Prevalence of Chronic Atrial Fibrillation in Dialysis Patients

    E-Print Network [OSTI]

    Wetmore, James B.

    2011-05-31T23:59:59.000Z

    .7) per 1000 patient-years. Age 60 years, male sex, Caucasian race, body mass index 30 kg/m2, and inability to ambulate were associated with chronic AF; hypertension as a comorbidity was inversely associated with AF. Occurrence of AF was roughly 10 times...

  15. PATIENT AUTHORIZATION FOR DISCLOSURE OF PROTECTED HEALTH INFORMATION

    E-Print Network [OSTI]

    Feschotte, Cedric

    abuse treatment program. I understand that if the authorized recipient of this information delay the processing of your request. Approximate Dates of Treatment: Information to be Disclosed I authorize the following health care provider(s) to DISCLOSE my patient information

  16. AMERICAN THORACIC SOCIETY PATIENT HEALTH SERIES Lung Cancer Prevention

    E-Print Network [OSTI]

    Kaski, Samuel

    AMERICAN THORACIC SOCIETY PATIENT HEALTH SERIES Lung Cancer Prevention What are the chances that I will develop lung cancer? The #1 cause of lung cancer is exposure to tobacco smoke. Your chances increase others (second-hand smoke), the greater your chances of developing lung cancer. People who have never

  17. Phase I Trial of Bortezomib and Concurrent External Beam Radiation in Patients With Advanced Solid Malignancies

    SciTech Connect (OSTI)

    Pugh, Thomas J.; Chen Changhu; Rabinovitch, Rachel [Department of Radiation Oncology, University of Colorado Denver and Health Science Center, Aurora, Colorado (United States); Eckhardt, S. Gail [Department of Medicine, University of Colorado Denver and Health Science Center, Aurora, Colorado (United States); Rusthoven, Kyle E. [Department of Radiation Oncology, University of Colorado Denver and Health Science Center, Aurora, Colorado (United States); Swing, Robyn [Clinical Investigations Core, University of Colorado Denver and Health Science Center, Aurora, Colorado (United States); Raben, David, E-mail: David.raben@ucdenver.ed [Department of Radiation Oncology, University of Colorado Denver and Health Science Center, Aurora, Colorado (United States)

    2010-10-01T23:59:59.000Z

    Purpose: To determine the maximal tolerated dose of bortezomib with concurrent external beam radiation therapy in patients with incurable solid malignant tumors requiring palliative therapy. Methods and Materials: An open label, dose escalation, phase I clinical trial evaluated the safety of three dose levels of bortezomib administered intravenously (1.0 mg/m{sup 2}, 1.3 mg/m{sup 2}, and 1.6 mg/m{sup 2}/ dose) once weekly with concurrent radiation in patients with histologically confirmed solid tumors and a radiographically appreciable lesion suitable for palliative radiation therapy. All patients received 40 Gy in 16 fractions to the target lesion. Dose-limiting toxicity was the primary endpoint, defined as any grade 4 hematologic toxicity, any grade {>=}3 nonhematologic toxicity, or any toxicity requiring treatment to be delayed for {>=}2 weeks. Results: A total of 12 patients were enrolled. Primary sites included prostate (3 patients), head and neck (3 patients), uterus (1 patient), abdomen (1 patient), breast (1 patient), kidney (1 patient), lung (1 patient), and colon (1 patient). The maximum tolerated dose was not realized with a maximum dose of 1.6 mg/m{sup 2}. One case of dose-limiting toxicity was appreciated (grade 3 urosepsis) and felt to be unrelated to bortezomib. The most common grade 3 toxicity was lymphopenia (10 patients). Common grade 1 to 2 events included nausea (7 patients), infection without neutropenia (6 patients), diarrhea (5 patients), and fatigue (5 patients). Conclusions: The combination of palliative external beam radiation with concurrent weekly bortezomib therapy at a dose of 1.6 mg/m{sup 2} is well tolerated in patients with metastatic solid tumors. The maximum tolerated dose of once weekly bortezomib delivered concurrently with radiation therapy is greater than 1.6 mg/m{sup 2}.

  18. Improving Patient Safety in Anesthesia: A Success Story?

    SciTech Connect (OSTI)

    Botney, Richard [Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, Portland, OR (United States)], E-mail: botneyr@ohsu.edu

    2008-05-01T23:59:59.000Z

    Anesthesia is necessary for surgery; however, it does not deliver any direct therapeutic benefit. The risks of anesthesia must therefore be as low as possible. Anesthesiology has been identified as a leader in improving patient safety. Anesthetic mortality has decreased, and in healthy patients can be as low as 1:250,000. Trends in anesthetic morbidity have not been as well defined, but it appears that the risk of injury is decreasing. Studies of error during anesthesia and Closed Claims studies have identified sources of risk and methods to reduce the risks associated with anesthesia. These include changes in technology, such as anesthetic delivery systems and monitors, the application of human factors, the use of simulation, and the establishment of reporting systems. A review of the important events in the past 50 years illustrates the many steps that have contributed to the improvements in anesthesia safety.

  19. Medical data mining : improving information accessibility using online patient drug reviews

    E-Print Network [OSTI]

    Li, Yueyang Alice

    2011-01-01T23:59:59.000Z

    We address the problem of information accessibility for patients concerned about, pharmaceutical drug side effects and experiences. We create a new corpus of online patient-provided drug reviews and present our initial ...

  20. Returns to physician human capital: Evidence from patients randomized to physician teams

    E-Print Network [OSTI]

    Doyle, Joseph J.

    Physicians play a major role in determining the cost and quality of healthcare, yet estimates of these effects can be confounded by patient sorting. This paper considers a natural experiment where nearly 30,000 patients ...

  1. Access to Care for Methadone Maintenance Patients in the United States

    E-Print Network [OSTI]

    Hettema, Jennifer E.; Sorensen, James L.

    2009-01-01T23:59:59.000Z

    abuse treatment occurred largely in isolation from scientific study or traditional medical care (care for MMT patients hinder these patients from obtaining needed substance abuse and mental health treatment

  2. Characteristics associated with comprehensive stool analysis findings in adult integrative medicine patients

    E-Print Network [OSTI]

    Young, Kristin Leigh

    2011-12-31T23:59:59.000Z

    patients with lower socioeconomic status, chronic disease, poor nutritional status, and/or general health risks would be more likely than other patients to have abnormal bacterial counts and abnormally low levels of short-chain fatty acids. Data were...

  3. Clinical Symptoms and Angiographic Findings of Patients Undergoing Elective Coronary Angiography without Prior Stress Testing

    E-Print Network [OSTI]

    Abdallah, Mouin Sami

    2012-12-31T23:59:59.000Z

    Background: Many patients undergo elective coronary angiography without prior stress testing, precluding an assessment of their appropriateness for percutaneous coronary intervention (PCI). If, however, these patients have more severe angina...

  4. Salem native invents pillow for post-surgical patients By Meg Hibbert

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    -shaped pillows hospitals often provide for patients to hold onto in order to cough to clear their lungs provided

  5. E-Print Network 3.0 - agitated intubated patients Sample Search...

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

    INTUBATION & ACLS... , chaplain consultation. Discussed with: Patient Health care surrogate Others ... Source: Acton, Scott - Department of Electrical and...

  6. Prognosis of Esophageal Cancer Patients With Pathologic Complete Response After Preoperative Concurrent Chemoradiotherapy

    SciTech Connect (OSTI)

    Park, Jae Won [Department of Radiation Oncology, Division of Oncology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul (Korea, Republic of); Kim, Jong Hoon, E-mail: jhkim2@amc.seoul [Department of Radiation Oncology, Division of Oncology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul (Korea, Republic of); Choi, Eun Kyung; Lee, Sang-wook; Yoon, Sang Min; Song, Si Yeol; Lee, Yu Sun [Department of Radiation Oncology, Division of Oncology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul (Korea, Republic of); Kim, Sung Bae [Department of Internal Medicine, Asan Medical Center, College of Medicine, University of Ulsan, Seoul (Korea, Republic of); Park, Seung il [Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul (Korea, Republic of); Ahn, Seung Do [Department of Radiation Oncology, Division of Oncology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul (Korea, Republic of)

    2011-11-01T23:59:59.000Z

    Purpose: To define failure patterns and predictive factors in esophageal cancer patients who had a pathologic complete response (pCR) after preoperative concurrent chemoradiotherapy (PCRT). Methods and Materials: We performed a retrospective analysis of 61 esophageal cancer patients who were enrolled in prospective studies and showed pCR after PCRT. All of the patients had squamous cell carcinoma. Of the patients, 40 were treated with hyperfractionated radiotherapy (4,560 cGy in 28 fractions) with 5-fluorouracil (5-FU) and cisplatin (FP), and 21 patients received conventional fractionation radiotherapy with capecitabine and cisplatin (XP). Results: The median follow-up time was 45.2 months (range, 6.5-162.3 months). The 5-year overall survival (OS) and disease-free survival rates (DFS) were 60.2% and 80.4%, respectively. In univariate analysis, age and lymph node (LN) metastasis were poor prognostic factors for OS, and pretreatment weight loss (>2 kg) was a poor prognostic factor for DFS. In multivariate analysis, lymph node metastasis and pretreatment weight loss were independent prognostic factors for OS and DFS. Nine patients (15%) had disease recurrence. Of the nine patients, 5 patients had locoregional failure, 1 patients had distant metastasis, and 3 patients had distant and locoregional failure. In-field failure occurred in 5 patients; out-of-field failure occurred in 1 patient; both in-field and out-of-field failure occurred in 2 patients; and both marginal and out-of-field failure occurred in 1 patient. Conclusions: Even in pCR patients, the most common failure site was within the radiation field, which suggests that more efficient local treatment is needed. Tumor recurrence was more common in patients with older age and with pretreatment weight loss.

  7. TITLE: MARKETING Columbia University Medical Center will not use or disclose a patient's Protected Health

    E-Print Network [OSTI]

    Columbia University

    TITLE: MARKETING POLICY: Columbia University Medical Center will not use or disclose a patient the procedures Columbia University Medical Center will follow in order to use a patient's PHI for marketing to patients: . describes a health-related product or service provided by Columbia University Medical Center

  8. Modeling and Simulation of Nuclear Medicine Patient Service Management in DEVS

    E-Print Network [OSTI]

    Ntaimo, Lewis

    -specialty of radiology, uses relatively new technology to diagnose and treat patients. Procedures (tests) in nuclear in nuclear medicine, which uses new technology to treat and diagnose patients. Nuclear medicine proceduresModeling and Simulation of Nuclear Medicine Patient Service Management in DEVS Eduardo P

  9. PREDICTING THE EFFECTIVENESS OF HYDROXYUREA IN INDIVIDUAL SICKLE CELL ANEMIA PATIENTS

    E-Print Network [OSTI]

    Valafar, Faramarz

    1 PREDICTING THE EFFECTIVENESS OF HYDROXYUREA IN INDIVIDUAL SICKLE CELL ANEMIA PATIENTS Homayoun patients with sickle cell anemia. The study described in this paper was undertaken to develop the ability therapy in patients with sickle cell anemia. Adult hemoglobin (HbA) is a tetrameric protein composed

  10. Modeling Red Blood Cell and Iron Dynamics in Patients with Chronic Kidney Disease

    E-Print Network [OSTI]

    Modeling Red Blood Cell and Iron Dynamics in Patients with Chronic Kidney Disease H. T. Banks1, that stimulates red blood cell (RBC) production. Without intervention, patients suffer from anemia. Patients treatment. Keywords: mathematical model, mathematical biology, erythropoiesis, erythrocyte, red blood cell

  11. Study of the relationship between indoor daylight environments and patient average length of stay (ALOS) in healthcare facilities

    E-Print Network [OSTI]

    Choi, Joon Ho

    2007-04-25T23:59:59.000Z

    This study investigates how indoor daylight environments affect patient Average Length of Stay (ALOS), by evaluating and analyzing daylight levels in patient rooms in comparison to their ALOS. The patient ALOS data were taken at one general hospital...

  12. Hemodynamic monitoring and management in patients undergoing high risk surgery: a survey among North American and European anesthesiologists

    E-Print Network [OSTI]

    Cannesson, Maxime; Pestel, Gunther; Ricks, Cameron; Hoeft, Andreas; Perel, Azriel

    2011-01-01T23:59:59.000Z

    and management in patients undergoing high risk surgery: a surveyand management in patients undergoing high risk surgery: a surveyand management in patients undergoing high-risk surgery. Materials and methods A survey

  13. Percutaneous Transjugular Direct Porto-caval Shunt in Patients with Budd-Chiari Syndrome

    SciTech Connect (OSTI)

    Quateen, A. [Charite Campus Virchow Clinic, Universitaetsmedizin Berlin, Department of Diagnostic and Interventional Radiology (Germany); Pech, M. [University of Magdeburg, Department of Radiology and Nuclear Medicine (Germany); Berg, T.; Bergk, A. [Charite Campus Virchow Clinic, Universitaetsmedizin Berlin, Department of Hepatogastroenterology (Germany); Podrabsky, P.; Felix, R. [Charite Campus Virchow Clinic, Universitaetsmedizin Berlin, Department of Diagnostic and Interventional Radiology (Germany); Ricke, J. [University of Magdeburg, Department of Radiology and Nuclear Medicine (Germany)], E-mail: jens.ricke@medizin.uni-magdeburg.de

    2006-08-15T23:59:59.000Z

    The purpose of the study was to evaluate the feasibility and effectiveness of direct porto-caval shunts in patients with Budd-Chiari syndrome (BCS) in whom there is no access to the hepatic veins during transjugular intrahepatic portosystemic shunt (TIPSS). We included six consecutive patients with fulminant/acute Budd-Chiari syndrome (mean age: 35 years) in whom a conventional TIPSS was not possible due to inaccessible hepatic veins. We performed a direct porto-caval shunt via a transhepatic approach. Patients were followed up by means of clinical examination, laboratory investigations, and Doppler ultrasound. TIPSS implantation from the inferior vena cava (IVC) was successful in all six patients (100%). The median transhepatic shunt length was 9 cm (8-10 cm). No procedure-related complications were observed in our patients. Early shunt occlusion occurred in three out of six patients (50%). In all three of these patients, the stent used to stabilize the shunt ended 1-2 cm before reaching the IVC. All occlusions were successfully recanalized. One of these patients developed recurrent early shunt as well as mesenteric and splenic vein occlusions. She died 7 days after TIPSS placement due to an unmanageable coagulation disorder. The remaining five patients were followed up by planned clinical examination and laboratory investigations (mean follow-up time was 15 months; patient 1 was followed up for 13 months, patient 2 for 14 months, patient 3 for 15 months, and patients 4 and 5 for 16 months) and all displayed a complete and durable resolution of liver failure and ascites without reintervention. In patients with acute liver failure originating from BCS and inaccessible hepatic veins, a direct transhepatic porto-caval shunt can be performed safely and effectively under ultrasound guidance. Future studies in larger patient groups should investigate if the patency of transcaval TIPSS with long transhepatic shunt segments is similar compared to conventional TIPSS via the hepatic vein.

  14. Patient stratification and genomics: flares, fizzlers and foxes

    E-Print Network [OSTI]

    Smith, Kenneth GC

    2012-11-28T23:59:59.000Z

    INVITED SPEAKER PRESENTATION Open Access Patient stratification and genomics: flares, fizzlers and foxes Kenneth GC Smith From 7th European Workshop on Immune-Mediated Inflammatory Diseases Noordwijk aan Zee, the Netherlands. 28-30 November 2012... , Rees AJ, Clayton DG, Smith KGC: Genetically distinct subsets within ANCA-associated vasculitis. N Engl J Med 2012, 367:214-223. 2. McKinney EF, Lyons PA, Carr EJ, Hollis JL, Jayne DRW, Willcocks LC, Koukoulaki M, Hatton A, MacAry PA, Brazma A, Chaudhry...

  15. Impact of Weight Change During the Course of Concurrent Chemoradiation Therapy on Outcomes in Stage IIIB Non-Small Cell Lung Cancer Patients: Retrospective Analysis of 425 Patients

    SciTech Connect (OSTI)

    Topkan, Erkan, E-mail: docdretopkan@gmail.com [Department of Radiation Oncology, Baskent University Adana Medical Faculty, Adana (Turkey); Parlak, Cem [Department of Radiation Oncology, Baskent University Adana Medical Faculty, Adana (Turkey); Selek, Ugur [American Hospital, University of Texas MD Anderson Radiation Oncology Center, Istanbul (Turkey)

    2013-11-15T23:59:59.000Z

    Purpose: We retrospectively investigated the impact of weight change (WC) during concurrent chemoradiation therapy (C-CRT) on clinical outcomes of stage 3B non-small cell lung cancer (NSCLC) patients. Methods and Materials: A total of 425 patients treated with C-CRT were included. All patients received 60 to 66 Gy of thoracic radiation therapy concurrently with 1 to 3 cycles of platinum-based chemotherapy. Pre- and posttreatment weight measurements on first and last days of C-CRT were used for WC. Patients were divided into 2 groups: group 1 = weight loss (WL); group 2 = weight preservation/gain (WP) for comparative analyses. Results: Following C-CRT, 252 patients (59.3%) experienced WL, while 89 patients (20.9%) and 84 patients (19.8%) showed WP or WG. At median 24.2 months of follow-up, 142 patients (33.4%) were alive (84 WP [48.6%] and 58 WL [23.0%]), and 58 (13.6%) of them were free of disease progression (41 [23.7%] for WP and 17 [6.7%] for WL). Median overall survival (OS), locoregional progression-free survival (LRPFS), progression-free survival (PFS), and distant metastases-free survival (DMFS) for the entire population were 22.8, 14.4, 10.6, and 11.7 months, respectively. Intergroup comparisons between WP and WL cohorts revealed significantly superior OS, LRPFS, PFS, and DMFS in WP patients (P<.05 for each). On multivariate analyses, only WL and advanced T stage were associated with poor prognosis (P<.05). Conclusions: Present results in 425 stage 3B NSCLC patients demonstrated that WL during C-CRT is strongly associated with inferior survival outcomes compared to WP. This emerging finding might be useful by forming an encouraging basis for future investigations in facilitating a way to improve the outcomes of these patients experiencing WL during C-CRT.

  16. Adherence to the Mediterranean diet is associated with a lower risk of body-shape changes in Croatian patients treated with combination antiretroviral therapy

    E-Print Network [OSTI]

    Tur?inov, Drago; Stanley, Christine; Rutherford, George W.; Novotny, Thomas E.; Begovac, Josip

    2009-01-01T23:59:59.000Z

    of body-shape changes. Croatian patients treated with CARTrisk of body-shape changes in Croatian patients treated withbody- shape changes in Croatian patients treated with CART.

  17. Comments on “Sensitivity of Emergency Bedside Ultrasound to Detect Hydronephrosis in Patients with Computed Tomography-proven Stones”

    E-Print Network [OSTI]

    K?z?lca, Özgür; Oztek, Alp; Senol, Utku

    2014-01-01T23:59:59.000Z

    al. Ultrasonography versus computed tomography for suspectedin Patients with Computed Tomography-proven Stones” Özgürin Patients with Computed Tomography-proven Stones. West J

  18. Reply to Comments Regarding “Sensitivity of Emergency Bedside Ultrasound to Detect Hydronephrosis in Patients with Computed Tomography-proven Stones”

    E-Print Network [OSTI]

    Riddell, Jeff; Swadron, Stuart

    2014-01-01T23:59:59.000Z

    al. Ultrasonography versus computed tomography for suspectedin Patients with Computed Tomography-proven Stones” Özgürin Patients with Computed Tomography-proven Stones. West J

  19. Reduced Acute Bowel Toxicity in Patients Treated With Intensity-Modulated Radiotherapy for Rectal Cancer

    SciTech Connect (OSTI)

    Samuelian, Jason M. [Department of Radiation Oncology, Mayo Clinic, Scottsdale, AZ (United States); Callister, Matthew D., E-mail: Callister.matthew@mayo.edu [Department of Radiation Oncology, Mayo Clinic, Scottsdale, AZ (United States); Ashman, Jonathan B. [Department of Radiation Oncology, Mayo Clinic, Scottsdale, AZ (United States); Young-Fadok, Tonia M. [Division of Colorectal Surgery, Mayo Clinic, Scottsdale, AZ (United States); Borad, Mitesh J. [Division of Hematology-Oncology, Mayo Clinic, Scottsdale, AZ (United States); Gunderson, Leonard L. [Department of Radiation Oncology, Mayo Clinic, Scottsdale, AZ (United States)

    2012-04-01T23:59:59.000Z

    Purpose: We have previously shown that intensity-modulated radiotherapy (IMRT) can reduce dose to small bowel, bladder, and bone marrow compared with three-field conventional radiotherapy (CRT) technique in the treatment of rectal cancer. The purpose of this study was to review our experience using IMRT to treat rectal cancer and report patient clinical outcomes. Methods and Materials: A retrospective review was conducted of patients with rectal cancer who were treated at Mayo Clinic Arizona with pelvic radiotherapy (RT). Data regarding patient and tumor characteristics, treatment, acute toxicity according to the Common Terminology Criteria for Adverse Events v 3.0, tumor response, and perioperative morbidity were collected. Results: From 2004 to August 2009, 92 consecutive patients were treated. Sixty-one (66%) patients were treated with CRT, and 31 (34%) patients were treated with IMRT. All but 2 patients received concurrent chemotherapy. There was no significant difference in median dose (50.4 Gy, CRT; 50 Gy, IMRT), preoperative vs. postoperative treatment, type of concurrent chemotherapy, or history of previous pelvic RT between the CRT and IMRT patient groups. Patients who received IMRT had significantly less gastrointestinal (GI) toxicity. Sixty-two percent of patients undergoing CRT experienced {>=}Grade 2 acute GI side effects, compared with 32% among IMRT patients (p = 0.006). The reduction in overall GI toxicity was attributable to fewer symptoms from the lower GI tract. Among CRT patients, {>=}Grade 2 diarrhea and enteritis was experienced among 48% and 30% of patients, respectively, compared with 23% (p = 0.02) and 10% (p = 0.015) among IMRT patients. There was no significant difference in hematologic or genitourinary acute toxicity between groups. In addition, pathologic complete response rates and postoperative morbidity between treatment groups did not differ significantly. Conclusions: In the management of rectal cancer, IMRT is associated with a clinically significant reduction in lower GI toxicity compared with CRT. Further study is needed to evaluate differences in late toxicity and long-term efficacy.

  20. Transjugular Intrahepatic Portosystemic Shunt Placement in Patients with Cirrhosis and Concomitant Portal Vein Thrombosis

    SciTech Connect (OSTI)

    Ha, Thuong G. Van, E-mail: tgvanha@radiology.bsd.uchicago.edu; Hodge, Justin; Funaki, Brian; Lorenz, Jonathan; Rosenblum, Jordan; Straus, Christopher; Leef, Jeff [University of Chicago, Department of Radiology, Section of Interventional Radiology (United States)

    2006-10-15T23:59:59.000Z

    Purpose. To determine the safety and efficacy of transjugular intrahepatic portosystemic shunt (TIPS) creation in patients with liver cirrhosis complicated by thrombosed portal vein. Methods. This study reviewed 15 cases of TIPS creation in 15 cirrhotic patients with portal vein thrombosis at our institution over an 8-year period. There were 2 women and 13 men with a mean age of 53 years. Indications were refractory ascites, variceal hemorrhage, and refractory pleural effusion. Clinical follow-up was performed in all patients. Results. The technical success rate was 75% (3/4) in patients with chronic portal vein thrombosis associated with cavernomatous transformation and 91% (10/11) in patients with acute thrombosis or partial thrombosis, giving an overall success rate of 87%. Complications included postprocedural encephalopathy and localized hematoma at the access site. In patients with successful shunt placement, the total follow-up time was 223 months. The 30-day mortality rate was 13%. Two patients underwent liver transplantation at 35 days and 7 months, respectively, after TIPS insertion. One patient had an occluded shunt at 4 months with an unsuccessful revision. The remaining patients had functioning shunts at follow-up. Conclusion. TIPS creation in thrombosed portal vein is possible and might be a treatment option in certain patients.

  1. Radiation pneumonitis in breast cancer patients treated with conservative surgery and radiation therapy

    SciTech Connect (OSTI)

    Lingos, T.I.; Recht, A.; Vicini, F.; Abner, A.; Silver, B.; Harris, J.R. (Joint Center for Radiation Therapy, Harvard Medical School, Boston, MA (USA))

    1991-07-01T23:59:59.000Z

    The likelihood of radiation pneumonitis and factors associated with its development in breast cancer patients treated with conservative surgery and radiation therapy have not been well established. To assess these, the authors retrospectively reviewed 1624 patients treated between 1968 and 1985. Median follow-up for patients without local or distant failure was 77 months. Patients were treated with either tangential fields alone (n = 508) or tangents with a third field to the supraclavicular (SC) or SC-axillary (AX) region (n = 1116). Lung volume treated in the tangential fields was generally limited by keeping the perpendicular distance (demagnified) at the isocenter from the deep field edges to the posterior chest wall (CLD) to 3 cm or less. Seventeen patients with radiation pneumonitis were identified (1.0%). Radiation pneumonitis was diagnosed when patients presented with cough (15/17, 88%), fever (9/17, 53%), and/or dyspnea (6/17, 35%) and radiographic changes (17/17) following completion of RT. Radiographic infiltrates corresponded to treatment portals in all patients, and in 12 of the 17 patients, returned to baseline within 1-12 months. Five patients had permanent scarring on chest X ray. No patient had late or persistent pulmonary symptoms. The incidence of radiation pneumonitis was correlated with the combined use of chemotherapy (CT) and a third field. Three percent (11/328) of patients treated with a 3-field technique who received chemotherapy developed radiation pneumonitis compared to 0.5% (6 of 1296) for all other patients (p = 0.0001). When patients treated with a 3-field technique received chemotherapy concurrently with radiation therapy, the incidence of radiation pneumonitis was 8.8% (8/92) compared with 1.3% (3/236) for those who received sequential chemotherapy and radiation therapy (p = 0.002).

  2. A patient-specific scatter artifacts correction method

    E-Print Network [OSTI]

    Zhao, Wei; Niu, Kai; Schafer, Sebastian; Royalty, Kevin; Chen, Guang-Hong

    2015-01-01T23:59:59.000Z

    This paper provides a fast and patient-specific scatter artifact correction method for cone-beam computed tomography (CBCT) used in image-guided interventional procedures. Due to increased irradiated volume of interest in CBCT imaging, scatter radiation has increased dramatically compared to 2D imaging, leading to a degradation of image quality. In this study, we propose a scatter artifact correction strategy using an analytical convolution-based model whose free parameters are estimated using a rough estimation of scatter profiles from the acquired cone-beam projections. It was evaluated using Monte Carlo simulations with both monochromatic and polychromatic X-ray sources. The results demonstrated that the proposed method significantly reduced the scatter-induced shading artifacts and recovered CT numbers.

  3. Portable, space-saving medical patient support system

    DOE Patents [OSTI]

    Bzorgi; Fariborz (Knoxville, TN)

    2011-02-01T23:59:59.000Z

    A support platform having a stowed configuration and a deployed configuration on a floor. The support platform is related to stretcher devices that are used for transporting, confining, or conducting medical procedures on medical patients in medical emergencies. The support platform typically includes a work surface that has a geometric extent. A base that typically includes a plurality of frame members is provided, and the frame members are disposed across the geometric extent of, and proximal to, the work surface in the stowed configuration. The frame members are typically disposed on the floor in the deployed configuration. There is a foldable bracing system engaged with the work surface and engaged with the base. At least a portion of the foldable bracing system is disposed substantially inside at least a portion of the plurality of frame members in the stowed configuration. Further, the foldable bracing system is configured for translocation of the work surface distal from the base in the deployed configuration.

  4. Normal muscle oxygen consumption and fatigability in sickle cell patients despite reduced microvascular oxygenation and hemorheological abnormalities

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    sickle cell anemia (SS) patients. Results: Muscle microvascular oxygenation was reduced in SS patients;4 Introduction Patients with sickle cell disease (SCD) are characterized by anemia and altered blood rheology1 Normal muscle oxygen consumption and fatigability in sickle cell patients despite reduced

  5. Radiofrequency Ablation of Lung Tumours with the Patient Under Thoracic Epidural Anaesthesia

    SciTech Connect (OSTI)

    Pouliquen, Cassiopee; Kabbani, Youssef, E-mail: kabbani@bergonie.org; Saignac, Pierre; Gekiere, Jean-Pierre [Institut Bergonie, Department of Anesthesiology and Intensive Care, Regional Cancer Centre (France); Palussiere, Jean [Institut Bergonie, Department of Interventional Radiology, Regional Cancer Centre (France)

    2011-02-15T23:59:59.000Z

    Radiofrequency ablation of lung tumours is a curative technique that is newly considered being offered to nonsurgical patients. It is of major interest because it enables local destruction of the tumour without surgery and spares healthy parenchyma. However, some patients have previous serious respiratory failure, thus ruling out mechanical ventilation. To operate with the patient under thoracic epidural is an answer to this problem. Our experience shows that the procedure is able to be performed completely without converting to general anaesthesia.

  6. Patient-Physician Communication About Complementary and Alternative Medicine in a Radiation Oncology Setting

    SciTech Connect (OSTI)

    Ge Jin [Perelman School of Medicine at University of Pennsylvania, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States)] [Perelman School of Medicine at University of Pennsylvania, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Fishman, Jessica [Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States) [Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Annenberg School for Communication at University of Pennsylvania, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Vapiwala, Neha [Abramson Comprehensive Cancer Center, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States) [Abramson Comprehensive Cancer Center, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Department of Radiation Oncology, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Li, Susan Q.; Desai, Krupali [Department of Family Medicine and Community Health, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States)] [Department of Family Medicine and Community Health, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Xie, Sharon X. [Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States)] [Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Mao, Jun J., E-mail: maoj@uphs.upenn.edu [Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Abramson Comprehensive Cancer Center, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States); Department of Family Medicine and Community Health, University of Pennsylvania Health System, Philadelphia, Pennsylvania (United States)

    2013-01-01T23:59:59.000Z

    Purpose: Despite the extensive use of complementary and alternative medicine (CAM) among cancer patients, patient-physician communication regarding CAM therapies remains limited. This study quantified the extent of patient-physician communication about CAM and identified factors associated with its discussion in radiation therapy (RT) settings. Methods and Materials: We conducted a cross-sectional survey of 305 RT patients at an urban academic cancer center. Patients with different cancer types were recruited in their last week of RT. Participants self-reported their demographic characteristics, health status, CAM use, patient-physician communication regarding CAM, and rationale for/against discussing CAM therapies with physicians. Multivariate logistic regression was used to identify relationships between demographic/clinical variables and patients' discussion of CAM with radiation oncologists. Results: Among the 305 participants, 133 (43.6%) reported using CAM, and only 37 (12.1%) reported discussing CAM therapies with their radiation oncologists. In multivariate analyses, female patients (adjusted odds ratio [AOR] 0.45, 95% confidence interval [CI] 0.21-0.98) and patients with full-time employment (AOR 0.32, 95% CI 0.12-0.81) were less likely to discuss CAM with their radiation oncologists. CAM users (AOR 4.28, 95% CI 1.93-9.53) were more likely to discuss CAM with their radiation oncologists than were non-CAM users. Conclusions: Despite the common use of CAM among oncology patients, discussions regarding these treatments occur rarely in the RT setting, particularly among female and full-time employed patients. Clinicians and patients should incorporate discussions of CAM to guide its appropriate use and to maximize possible benefit while minimizing potential harm.

  7. Radiotherapy Plus Transarterial Chemoembolization for Hepatocellular Carcinoma Invading the Portal Vein: Long-Term Patient Outcomes

    SciTech Connect (OSTI)

    Yoon, Sang Min [Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Lim, Young-Suk [Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Won, Hyung Jin [Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Kim, Jong Hoon, E-mail: jhkim2@amc.seoul.kr [Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Kim, Kang Mo; Lee, Han Chu; Chung, Young-Hwa; Lee, Yung Sang [Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Lee, Sung Gyu [Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Park, Jin-hong [Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Suh, Dong Jin [Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of)

    2012-04-01T23:59:59.000Z

    Purpose: We have evaluated the clinical outcomes of patients after transarterial chemoembolization (TACE) and 3-dimensional conformal radiotherapy for hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT). Methods and Materials: A registry database of 412 patients treated with TACE and three-dimensional conformal radiotherapy for HCC with PVTT between August 2002 and August 2008 were analyzed retrospectively. The radiotherapy volume included the PVTT, with a 2- to 3-cm margin to cover adjacent HCC. Intrahepatic primary HCC was managed by TACE before or after radiotherapy. Results: Median patient age was 52 years old, and 88.1% of patients were male. Main or bilateral PVTT was observed in 200 (48.5%) patients. Median radiation dose was 40 Gy (range, 21-60 Gy) delivered in 2- to 5-Gy fractions. We found that 3.6% of patients achieved a complete response and that 24.3% of patients achieved a partial response. The response and progression-free rates of PVTT were 39.6% and 85.6%, respectively. Median patient survival was 10.6 months, and the 1- and 2-year survival rates were 42.5% and 22.8%, respectively. Significant independent variables associated with overall survival included advanced tumor stage, alpha-fetoprotein level, degree of PVTT, and response to radiotherapy. Forty-one patients (10.0%) showed grade 3-4 hepatic toxicity during or 3 months after completion of radiotherapy. Grades 2-3 gastroduodenal complications were observed in 15 patients (3.6%). Conclusions: Radiotherapy is a safe and effective treatment for PVTT in patients with HCC. These results suggested that the combination of TACE and radiotherapy is a treatment option for relieving and/or stabilizing PVTT in patients with advanced HCC.

  8. Access to Care for Methadone Maintenance Patients in the United States

    E-Print Network [OSTI]

    Hettema, Jennifer E.; Sorensen, James L.

    2009-01-01T23:59:59.000Z

    J. L. (2007). Methadone maintenance therapy in residentialet al. 2006). Methadone maintenance therapy (MMT) has highlyto Care for Methadone Maintenance Patients in the United

  9. Personalized Medicine and the Role of Patient Preferences, Risk Perception and Information Exchange

    E-Print Network [OSTI]

    Chanfreau, Catherine Claire

    2015-01-01T23:59:59.000Z

    patient adjuvant breast cancer treatment selection. J Clin2009). Perceptions of breast cancer treatment among African-for their breast cancer treatment decisions: disparities in

  10. Cancer survivors and survivorship care: Provider expectations, post-treatment health services, and patient reported outcomes

    E-Print Network [OSTI]

    Hahn, Erin Elizabeth

    2013-01-01T23:59:59.000Z

    you heard about cancer treatment summaries or survivorshipthe course of breast cancer treatment should patients beginduring their active cancer treatment (surgery, radiation,

  11. Eccrine poromatosis in a patient with acute myeloid leukemia following chemotherapy

    E-Print Network [OSTI]

    Garshick, Marisa; DeFilippis, Ersilia M; Harp, Joanna; Gaan, Jalong

    2014-01-01T23:59:59.000Z

    a patient with acute myeloid leukemia following chemotherapywith a history of acute myeloid leukemia. Keywords: eccrinewith a history of acute myeloid leukemia. Case synopsis The

  12. Molecular characterization of the stomach microbiota in patients with gastric cancer and controls

    E-Print Network [OSTI]

    Dicksved, J.

    2009-01-01T23:59:59.000Z

    microflora in Helicobacter pylori-infected patients. JournalJ. C. (2004). Helicobacter pylori persistence: biology andRohan, T. (2000). Helicobacter pylori strain types and risk

  13. Understanding Why Patients Return to the Emergency Department after Mild Traumatic Brain Injury within 72 Hours

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    patients with minimal brain injury and small intracranialelements for traumatic brain injury: a population study. Intcenter for mild traumatic brain injury. Neurosurgical Focus.

  14. Planning Guide for Vaccinating Pediatric Patients Against H1N1 Influenza in Private Healthcare Settings

    SciTech Connect (OSTI)

    HCTT CHE

    2010-01-01T23:59:59.000Z

    The purpose of this document is to provide guidance for planning and conducting 2009 H1N1 Influenza vaccination of pediatric patients in private healthcare settings.

  15. E-Print Network 3.0 - automated patient history Sample Search...

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

    sys- tems can... be designed to provide tailored information to patients on their health, their care teams, the sta- tus Source: Hunt, Galen - Operating Systems Group,...

  16. E-Print Network 3.0 - adult asthmatic patients Sample Search...

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

    utilize health insurance,1 few stop to consider... With the passage of the health reform law, the Patient Protection and Affordable Care Act, insurers are required... to cover...

  17. Sensitivity of Emergency Bedside Ultrasound to Detect Hydronephrosis in Patients with Computed Tomography-proven Stones

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    DJ, Hall EJ. Computed tomography-an increasing source ofin Patients with Computed Tomography-proven Stones JeffNon-contrast computed tomography (CT) is widely regarded as

  18. Prevalence and Treatment Management of Oropharyngeal Candidiasis in Cancer Patients: Results of the French Candidoscope Study

    SciTech Connect (OSTI)

    Gligorov, Joseph [APHP Tenon, APREC, University Paris VI, Paris (France); Bastit, Laurent [Centre Frederic Joliot, Rouen (France); Gervais, Honorine [Hopital Saint Antoine, Paris (France); Henni, Mehdi [Hopital Europeen Georges Pompidou, Paris (France); Kahila, Widad [Centre Jean Perrin, Clermont-Ferrand (France); Lepille, Daniel [Clinique Chirurgicale Pasteur, Evreux (France); Luporsi, Elisabeth [Centre Alexis Vautrin, Vandoeuvre-les-Nancy (France); Sasso, Giuseppe [Centre Medical Forcilles, Ferolles-Attily (France); Varette, Charles [Centre Hospitalier Prive Claude Galien, Quincy-sous-Senart (France); Azria, David, E-mail: David.Azria@valdorel.fnclcc.f [Crlc Val d'Aurelle, Inserm U860, Universite Montpellier I, Montpellier (France)

    2011-06-01T23:59:59.000Z

    Purpose: The aim of this pharmaco-epidemiological study was to evaluate the prevalence of oropharyngeal candidiasis (OPC) in cancer patients treated with chemotherapy and/or radiotherapy. Methods and Materials: Signs and symptoms of OPC were noted for all patients. Antifungal therapeutic management was recorded in OPC patients. Patients receiving local antifungal treatments were monitored until the end of treatment. Results: Enrolled in the study were 2,042 patients with solid tumor and/or lymphoma treated with chemotherapy and/or another systemic cancer treatment and/or radiotherapy. The overall prevalence of OPC was 9.6% (95% confidence interval, 8.4%-11.0%]in this population. It was most frequent in patients treated with combined chemoradiotherapy (22.0%) or with more than two cytotoxic agents (16.9%). Local antifungal treatments were prescribed in 75.0% of OPC patients as recommended by guidelines. The compliance to treatment was higher in patients receiving once-daily miconazole mucoadhesive buccal tablet (MBT; 88.2%) than in those treated with several daily mouthwashes of amphotericin B (40%) or nystatin (18.8%). Conclusion: OPC prevalence in treated cancer patients was high. Local treatments were usually prescribed as per guidelines. Compliance to local treatments was better with once-daily drugs.

  19. Prediction of Chronic Obstructive Pulmonary Disease (COPD) in Asthma Patients Using Electronic Medical Records

    E-Print Network [OSTI]

    Dai, Yi

    Objective: Identify clinical factors that modulate the risk of progression to COPD among asthma patients using data extracted from electronic medical records.

  20. Squamous-cell carcinoma in situ in a patient with oculocutaneous albinism

    E-Print Network [OSTI]

    Berger, Emily; Hunt, Raegan; Tzu, Julia; Patel, Rishi; Sanchez, Miguel

    2011-01-01T23:59:59.000Z

    Pigmented skin lesions in tyrosinase-positive oculocutaneousmanner [ 1 ]. In OCA 1, tyrosinase mutations on chromosome1 , 2 ]. In patients with tyrosinase-positive albinism, so-

  1. Underdiagnosed and undertreated depression among racially/ethnically diverse patients with type 2 diabetes.

    E-Print Network [OSTI]

    Sorkin, Dara H; Ngo-Metzger, Quyen; Billimek, John; August, Kristin J; Greenfield, Sheldon; Kaplan, Sherrie H

    2011-01-01T23:59:59.000Z

    LA. The relationship between diabetes distress and clinicalamong patients with type 2 diabetes. Di- abetes Care 2010;© 2011 by the American Diabetes Association. Readers may use

  2. White matter tract integrity and intelligence in patients with mental retardation and healthy adults

    E-Print Network [OSTI]

    Jiang,Tianzi

    ), cingulum, uncinate fasciculus (UF), optic radiation (OR) and corticospinal tract (CST) are damaged when further controlling for group. This study indicate that MR patients show extensive damage

  3. Effectiveness of Patient Adherence Groups as a Model of Care for Stable Patients on Antiretroviral Therapy in Khayelitsha, Cape Town, South Africa

    E-Print Network [OSTI]

    Hernan, Miguel Angel

    Abstract: Background: Innovative models of care are required to cope with the ever-increasing number of patients on antiretroviral therapy in the most affected countries. This study, in Khayelitsha, South Africa, evaluates ...

  4. In-patient to isocenter KERMA ratios in CT

    SciTech Connect (OSTI)

    Huda, Walter; Ogden, Kent M.; Lavallee, Robert L.; Roskopf, Marsha L.; Scalzetti, Ernest M. [Department of Radiology and Radiological Science, Medical University of South Carolina (MUSC), 96 Jonathan Lucas Street (MSC 323), Charleston, South Carolina 29425-3230 (United States); Department of Radiology, SUNY Upstate Medical University, 750 E Adams Street, Syracuse, New York 13210 (United States)

    2011-10-15T23:59:59.000Z

    Purpose: To estimate in-patient KERMA for specific organs in computed tomography (CT) scanning using ratios to isocenter free-in-air KERMA obtained using a Rando phantom.Method: A CT scan of an anthropomorphic phantom results in an air KERMA K at a selected phantom location and air kerma K{sub CT} at the CT scanner isocenter when the scan is repeated in the absence of the phantom. The authors define the KERMA ratio (R{sub K}) as K/ K{sub CT}, which were experimentally determined in a Male Rando Phantom using lithium fluoride chips (TLD-100). R{sub K} values were obtained for a total of 400 individual point locations, as well as for 25 individual organs of interest in CT dosimetry. CT examinations of Rando were performed on a GE LightSpeed Ultra scanner operated at 80 kV, 120 kV, and 140 kV, as well as a Siemens Sensation 16 operated at 120 kV. Results: At 120 kV, median R{sub K} values for the GE and Siemens scanners were 0.60 and 0.64, respectively. The 10th percentile R{sub K} values ranged from 0.34 at 80 kV to 0.54 at 140 kV, and the 90th percentile R{sub K} values ranged from 0.64 at 80 kV to 0.78 at 140 kV. The average R{sub K} for the 25 Rando organs at 120 kV was 0.61 {+-} 0.08. Average R{sub K} values in the head, chest, and abdomen showed little variation. Relative to R{sub K} values in the head, chest, and abdomen obtained at 120 kV, R{sub K} values were about 12% lower in the pelvis and about 58% higher in the cervical spine region. Average R{sub K} values were about 6% higher on the Siemens Sensation 16 scanner than the GE LightSpeed Ultra. Reducing the x-ray tube voltage from 120 kV to 80 kV resulted in an average reduction in R{sub K} value of 34%, whereas increasing the x-ray tube voltage to 140 kV increased the average R{sub K} value by 9%. Conclusions: In-patient to isocenter relative KERMA values in Rando phantom can be used to estimate organ doses in similar sized adults undergoing CT examinations from easily measured air KERMA values at the isocenter (free in air). Conversion from in-patient air KERMA values to tissue dose would require the use of energy-appropriate conversion factors.

  5. An examination of the relationship among patient factors, patient-physician interaction, and utilization of health services in adults with diabetes

    E-Print Network [OSTI]

    Rivers, Desiree Avia

    2009-05-15T23:59:59.000Z

    , the findings from this study will be summarized and discussed in the context of the study limitations, recommendations for future studies, and implications for health education. 12 CHAPTER II LITERATURE REVIEW Healthy People 2010 objective 11...?from the patient and provider point of view (Charon, 2001; Sharf & Poirier, 1988). Patients understand their health or disease in ways that make sense to them; of importance are their ?stories? or accounts of what?s happening to them (Sharf, 1990; Street, 1991a...

  6. Efficacy of TACE in TIPS Patients: Comparison of Treatment Response to Chemoembolization for Hepatocellular Carcinoma in Patients With and Without a Transjugular Intrahepatic Portosystemic Shunt

    SciTech Connect (OSTI)

    Kuo, Yuo-Chen, E-mail: yuo-chen.kuo@ucsf.edu; Kohi, Maureen P., E-mail: maureen.kohi@ucsf.edu; Naeger, David M., E-mail: david.naeger@ucsf.edu; Tong, Ricky T., E-mail: ricky.tong@ucsf.edu; Kolli, K. Pallav, E-mail: kanti.kolli@ucsf.edu; Taylor, Andrew G., E-mail: andrew.taylor@ucsf.edu; Laberge, Jeanne M., E-mail: jeanne.laberge@ucsf.edu; Kerlan, Robert K., E-mail: robert.kerlan@ucsf.edu; Fidelman, Nicholas, E-mail: nicholas.fidelman@ucsf.edu [University of California San Francisco, Department of Radiology and Biomedical Imaging (United States)] [University of California San Francisco, Department of Radiology and Biomedical Imaging (United States)

    2013-10-15T23:59:59.000Z

    Purpose: To compare treatment response after transarterial chemoembolization (TACE) for hepatocellular carcinoma (HCC) in patients with and without a transjugular intrahepatic portosystemic shunt (TIPS). Materials and Methods: A retrospective review of patients who underwent conventional TACE for HCC between January 2005 and December 2009 identified 10 patients with patent TIPS. From the same time period, 23 patients without TIPS were selected to control for comparable Model for End-Stage Liver Disease and Child-Pugh-Turcotte scores. The two groups showed similar distribution of Barcelona Clinic Liver Cancer and United Network of Organ Sharing stages. Target HCC lesions were evaluated according to the modified response evaluation criteria in solid tumors (mRECIST) guidelines. Transplantation rate, time to tumor progression, and overall survival (OS) were documented. Results: After TACE, the rate of complete response was significantly greater in non-TIPS patients compared with TIPS patients (74 vs. 30 %, p = 0.03). Objective response rate (complete and partial response) trended greater in the non-TIPS group (83 vs. 50 %, p = 0.09). The liver transplantation rate was 80 and 74 % in the TIPS and non-TIPS groups, respectively (p = 1.0). Time to tumor progression was similar (p = 0.47) between the two groups. OS favored the non-TIPS group (p = 0.01) when censored for liver transplantation. Conclusion: TACE is less effective in achieving complete or partial response using mRECIST criteria in TIPS patients compared with those without a TIPS. Nevertheless, similar clinical outcomes may be achieved, particularly in TIPS patients who are liver-transplantation candidates.

  7. Adaptive motion mapping in pancreatic SBRT patients using Fourier transforms

    E-Print Network [OSTI]

    Jones, Bernard L; Miften, Moyed

    2015-01-01T23:59:59.000Z

    Recent studies suggest that 4DCT is unable to accurately measure respiratory-induced pancreatic tumor motion. In this work, we assessed the daily motion of pancreatic tumors treated with SBRT, and developed adaptive strategies to predict and account for this motion. The daily motion trajectory of pancreatic tumors during CBCT acquisition was calculated using a model which reconstructs the instantaneous 3D position in each 2D CBCT projection image. We developed a metric (termed "Spectral Coherence," SC) based on the Fourier frequency spectrum of motion in the SI direction, and analyzed the ability of SC to predict motion-based errors and classify patients according to motion characteristics. The amplitude of daily motion exceeded the predictions of pre-treatment 4DCT imaging by an average of 3.0 mm, 2.3 mm, and 3.5 mm in the AP, LR, and SI directions. SC was correlated with daily motion differences and tumor dose coverage. In a simulated adaptive protocol, target margins were adjusted based on SC, resulting in...

  8. Microwave beamforming for non-invasive patient-specific hyperthermia treatment of pediatric brain cancer

    E-Print Network [OSTI]

    Sheridan, Jennifer

    -invasive patient-specific hyperthermia treatment of pediatric brain cancer Matthew J Burfeindt1 , Earl Zastrow1 adjuvant to other treatment modalities for a variety of cancers (e.g., Overgaard et al 1995, Kapp 1996, VanMicrowave beamforming for non-invasive patient-specific hyperthermia treatment of pediatric brain

  9. Case Report Fatal Ophiostoma piceae infection in a patient with acute lymphoblastic leukaemia

    E-Print Network [OSTI]

    , chemotherapy was initiated according to the German Acute Lymphoblastic Leukemia study group (GMALL 07Case Report Fatal Ophiostoma piceae infection in a patient with acute lymphoblastic leukaemia-related fungus caused disseminated infection involving the lung and the brain in a patient with lymphoblastic

  10. EGOOZ: Specifying the Components of Electronic Patient Record-related Education

    E-Print Network [OSTI]

    Zandstra, Peter W.

    EGOOZ: Specifying the Components of Electronic Patient Record-related Education A. Hasman1 , P Objective: To determine whether educators consider electronic patient record (EPR)-related education of educators. Results: In total 45 learning goals were identified from the literature. The questionnaire

  11. 445EAST69THSTREET,NEWYORK,NY10021 Patients at the center

    E-Print Network [OSTI]

    Chen, Tsuhan

    ­ access to the latest advances in patient care and discoveries achieved in our laboratories. Medical is the center of everything we do. When our medical students graduate from Weill Cornell Medical College with early exposure to patient care. Weill Cornell Medical College offers students the best of both worlds

  12. AT&T Remote Patient Monitoring Solutions Software as a Service (RPMSaaS) helps

    E-Print Network [OSTI]

    Fisher, Kathleen

    way to provide outpatient care. Fortunately, healthcare reform and the Affordable Care Act allow new-time remote patient monitoring software. RPM­SaaS automates post-discharge care through interactive mobile patient access, clinical caregivers may intervene to avoid acute health problems, as well as provide

  13. The Future of Patient Care at Academic Health Centers Karen Davis

    E-Print Network [OSTI]

    von der Heydt, Rüdiger

    The Future of Patient Care at Academic Health Centers Karen Davis President The Commonwealth Fund, chairman, James J. Mongan, MD #12;4 The Future of Patient Care at Academic Health Centers · Strategy for Achieving a High Performance Health System · A 2020 Vision for American Health Care · How Do We Fare? ­ 2011

  14. AACR Cancer Progress Report 2012 Making Research Count for Patients: A New Day

    E-Print Network [OSTI]

    Sherman, S. Murray

    AACR Cancer Progress Report 2012 Making Research Count for Patients: A New Day www.cancerprogressreport.org · www.aacr.org #12;AACR Cancer Progress Report 2012 Making Research Count for Patients: A New Day www.cancerprogressreport.org · www.aacr.org Also published as: American Association for Cancer Research. AACR cancer progress report

  15. Decreased T-Cell Responses to Influenza Vaccination in Patients with Heart Failure

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Decreased T-Cell Responses to Influenza Vaccination in Patients with Heart Failure Orly Vardeny vaccination in patients with chronic heart failure (CHF) are less vigorous than the responses of healthy strategies for influenza vaccination. Key Words: chronic heart failure, CHF, influenza vaccination, immune

  16. Decreased Hematocrit-To-Viscosity Ratio and Increased Lactate Dehydrogenase Level in Patients with Sickle Cell

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with Sickle Cell Anemia and Recurrent Leg Ulcers Philippe Connes1,2,3* , Yann Lamarre1,2 , Marie-à-Pitre, Guadeloupe Abstract Leg ulcer is a disabling complication in patients with sickle cell anemia (SCA Dehydrogenase Level in Patients with Sickle Cell Anemia and Recurrent Leg Ulcers. PLoS ONE 8(11): e79680. doi:10

  17. Simultaneous Segmentation and Grading of Hippocampus for Patient Classification with Alzheimer's

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Simultaneous Segmentation and Grading of Hippocampus for Patient Classification with Alzheimer library used during our experiments was composed by 2 populations, 50 Cognitively Normal subjects (CN of the HC at the same time resulted in an efficient patient classification with a success rate of 90

  18. Clinical Reasoning Automata for Simulated Patients Froduald Kabanza1 and Guy Bisson2

    E-Print Network [OSTI]

    Kabanza, Froduald

    Clinical Reasoning Automata for Simulated Patients Froduald Kabanza1 and Guy Bisson2 University.Kabanza@usherbrooke.ca 2 Faculty of Medicine Guy.Bisson@Usherbrooke.ca Abstract. In this paper we introduce clinical a clinical reasoning activity. A state of the automaton represents a particular process in a complex patient

  19. Multilevel Bayesian Models for Survival Times and Longitudinal Patient-Reported Outcomes with Many Zeros

    E-Print Network [OSTI]

    Carlin, Bradley P.

    benefits to patient-reported outcomes (PROs) may add value to the traditional biomedical clinical trial longitudinal PRO measurements and survival outcomes. Model development is motivated by a clinical trialMultilevel Bayesian Models for Survival Times and Longitudinal Patient-Reported Outcomes with Many

  20. Sputum Biomarkers and the Prediction of Clinical Outcomes in Patients with Cystic Fibrosis

    E-Print Network [OSTI]

    Adler, Fred

    Sputum Biomarkers and the Prediction of Clinical Outcomes in Patients with Cystic Fibrosis Theodore and predictive of future clinical outcomes. Patients represented the majority of sputum producers. They were and clinical outcomes meticulously recorded for a median 5.9 (interquartile range 5.0 to 6.6) years to study

  1. Duke Health Briefs: Positive Outlook Linked to Longer Life in Heart Patients

    E-Print Network [OSTI]

    Hunter, David

    Duke Health Briefs: Positive Outlook Linked to Longer Life in Heart Patients keywords : CardiologyMinute. Here's some health advice to take to heart: if you want to live longer, stay happy. A recent Duke study of more than 800 heart patients found that those who reported experiencing more positive emotions

  2. Use of Lung Transplantation Survival Models to Refine Patient Selection in Cystic Fibrosis

    E-Print Network [OSTI]

    Adler, Fred

    Use of Lung Transplantation Survival Models to Refine Patient Selection in Cystic Fibrosis Theodore Angeles, California Lung transplantation in cystic fibrosis may improve survival for patients with low 5 and United Network for Organ Sharing data, we identified 845 lung transplant recipients from 1991

  3. TP53 gene mutations of lung cancer patients in upper northern Thailand and environmental risk factors

    E-Print Network [OSTI]

    TP53 gene mutations of lung cancer patients in upper northern Thailand and environmental risk mutations are observed in about 40e70% of lung cancer tissues, and the hot spot codon mu- tations factors that influence TP53 gene mutation in lung cancer patients residing areas with high lung cancer

  4. Loss of Social Behaviours in Populations of Pseudomonas aeruginosa Infecting Lungs of Patients with Cystic

    E-Print Network [OSTI]

    West, Stuart

    Loss of Social Behaviours in Populations of Pseudomonas aeruginosa Infecting Lungs of Patients persistent and frequently fatal infections of the lung in patients with cystic fibrosis. Isolates from and this is widely interpreted as the result of adaptation to the lung environment. Typically, chronic strains carry

  5. Guidelines for Predental Students Providing Patient Care During Clinical Experiences Abroad

    E-Print Network [OSTI]

    Hayes, Jane E.

    Guidelines for Predental Students Providing Patient Care During Clinical Experiences Abroad have had beneficial experiences through involvement in patient care activities abroad and services have been provided to people in need, the potential for harm and abuse in these situations cannot be ignored

  6. Modeling Red Blood Cell and Iron Dynamics in Patients Undergoing Periodic EPO and Iron Treatments

    E-Print Network [OSTI]

    Modeling Red Blood Cell and Iron Dynamics in Patients Undergoing Periodic EPO and Iron Treatments H in the kidneys, that stimulates red blood cell (RBC) production. Without intervention, patients suffer from, erythrocyte, red blood cell, chronic kidney disease, dialysis, iron, neocytolysis, hepcidin, EPO, hemoglobin e

  7. Automatic Drug Side Effect Discovery from Online Patient-Submitted Reviews: Focus on Statin Drugs

    E-Print Network [OSTI]

    Automatic Drug Side Effect Discovery from Online Patient-Submitted Reviews: Focus on Statin Drugs become empowered to share personal experiences regarding prescription drugs via Web page discussion from patient-provided drug reviews on health-related web sites. We focus on the statin class

  8. Survival after bilateral lung transplantation versus single lung transplantation for patients with chronic obstructive pulmonary disease.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Survival after bilateral lung transplantation versus single lung transplantation for patients, Pennsylvania, USA. 8 International Heart and Lung Transplant Registry, Addison, Texas. Word count: 3204 Background: Both single and bilateral lung transplantation (LT) are recognized options for patients with end

  9. Prediction of Patient's Response to an Acute Inflammation Treatment by Mixture of Experts

    E-Print Network [OSTI]

    Obradovic, Zoran

    is the leading cause of death in non-coronary intensive care units in the United States. In practice, clin pattern (area C) - anti- inflammatory response restoring patient state, any therapy likely harmful. United on mixture of ex- perts. The proposed model identifies stages (regimes) of patient state and builds

  10. Temporal Features and Kernel Methods for Predicting Sepsis in Postoperative Patients

    E-Print Network [OSTI]

    Scott, Clayton

    ]. In the United States, 0.8 to 2 million patients become septic every year, 30% of which are surgical patients, and are based on four physiological variables: body temperature, heart rate, breathing rate, and white blood positive rate), which diminishes their utility in clinical settings. This paper presents new features

  11. Lung Cancer (2004) 46, 333--340 High serum YKL-40 level in patients with small

    E-Print Network [OSTI]

    Price, Paul A.

    2004-01-01T23:59:59.000Z

    Lung Cancer (2004) 46, 333--340 High serum YKL-40 level in patients with small cell lung cancer May 2004; accepted 6 May 2004 KEYWORDS Small cell lung carcinoma; Tumor invasiveness; YKL-40; HC gp-39 evaluated serum YKL-40 in 131 patients with small cell lung cancer (SCLC). Twenty-two percent

  12. Implementation of High-Dose-Rate Brachytherapy and Androgen Deprivation in Patients With Prostate Cancer

    SciTech Connect (OSTI)

    Lilleby, Wolfgang, E-mail: wolfgang.lilleby@ous-hf.no [Cancer Clinic, Oslo University Hospital, Norwegian Radiumhospital, Department of Radiotherapy and Oncology, Oslo (Norway); Tafjord, Gunnar; Raabe, Nils K. [Cancer Clinic, Oslo University Hospital, Norwegian Radiumhospital, Department of Radiotherapy and Oncology, Oslo (Norway)

    2012-07-01T23:59:59.000Z

    Purpose: To evaluate outcome (overall survival [OS], the actuarial 5-year cancer-specific survival [CSS], disease-free survival [DFS], biochemical failure-free survival [BFS]), complications and morbidity in patients treated with high-dose-rate brachytherapy (HDR-BT) boost and hormonal treatment with curative aims. Methods: Between 2004 and 2009, 275 prospectively followed pN0/N0M0 patients were included: 19 patients (7%) with T2, Gleason score 7 and prostate-specific antigen (PSA) <10 and 256 patients (93%) with T3 or Gleason score 8-10 or PSA >20 received multimodal treatment with conformal four-field radiotherapy (prostate/vesiculae 2 Gy Multiplication-Sign 25) combined with HDR-BT (iridium 192; prostate 10 Gy Multiplication-Sign 2) with long-term androgen deprivation therapy (ADT). Results: After a median observation time of 44.2 months (range, 10.4-90.5 months) 12 patients had relapsed clinically and/or biochemically and 10 patients were dead, of which 2 patients died from prostate cancer. Five-year estimates of BFS, CSS, DFS, and OS rates were 98.5%, 99.3%, 95.6%, and 96.3%, respectively. None of the patients with either Gleason score <8 or with intermediate risk profile had relapsed. The number of HDR-BT treatments was not related to outcome. Despite of age (median, 65.7 years; range, 45.7-77 years) and considerable pretreatment comorbidity in 39 of 275 patients, Genitourinary treatment-related morbidity was moderate with long-lasting Radiation Therapy Oncology Group Grade 2 voiding problems in 26 patients (9.5%) and occasionally mucous discharge in 20 patients (7%), none with Grade >2 for gastrointestinal at follow-up. Complications during implantations were related to pubic arch interference (4 patients) and lithotomy time, causing 2 patients to develop compartment syndrome. Conclusion: Despite still preliminary observations, our 5-year outcome estimates favor the implementation of high-dose-rate brachytherapy in high-risk patients combined with conformal external radiotherapy and long-term ADT. High-quality implants can be achieved by a trained specialized team at a high-turnover center using transrectal ultrasound-based treatment plans with acceptable morbidity and complication rates.

  13. AN ARTIFICIAL NEURAL NETWORK EVALUATION OF TUBERCULOSIS USING GENETIC AND PHYSIOLOGICAL PATIENT DATA

    SciTech Connect (OSTI)

    Griffin, William O.; Darsey, Jerry A. [Department of Chemistry of Arkansas at Little Rock, Little Rock, AR (United States); Hanna, Josh [Department of Bioinformatics of Arkansas at Little Rock, Little Rock, AR (United States); Razorilova, Svetlana; Kitaev, Mikhael; Alisherov, Avtandiil [National Center of Tuberculosis, Bishkek (Kyrgyzstan); Tarasenko, Olga [Department of Biology University of Arkansas at Little Rock, Little Rock, AR (United States)

    2010-04-12T23:59:59.000Z

    When doctors see more cases of patients with tell-tale symptoms of a disease, it is hoped that they will be able to recognize an infection administer treatment appropriately, thereby speeding up recovery for sick patients. We hope that our studies can aid in the detection of tuberculosis by using a computer model called an artificial neural network. Our model looks at patients with and without tuberculosis (TB). The data that the neural network examined came from the following: patient' age, gender, place, of birth, blood type, Rhesus (Rh) factor, and genes of the human Leukocyte Antigens (HLA) system (9q34.1) present in the Major Histocompatibility Complex. With availability in genetic data and good research, we hope to give them an advantage in the detection of tuberculosis. We try to mimic the doctor's experience with a computer test, which will learn from patient data the factors that contribute to TB.

  14. Impact of Hemodialysis on Lipid Profile among Chronic Renal Failure Patients- A Case Control Study

    E-Print Network [OSTI]

    unknown authors

    Abstract- Chronic Renal Failure (CRF) patients are at risk of cardiovascular diseases due to the elevation of various forms of lipids. Many a time CRF patients live on hemodialysis on regular basis. Present study was done to know whether hemodialysis has any impact on the lipid profile of the CRF patients. Study were divided into 3 groups, Group-I: healthy controls (30), Group-II: CRF patients who never undergone hemodialysis (30) and Group-III: CRF patients on hemodialysis for more than 6 months (30). We obtained serum samples from patients in the morning after an overnight fast and were analyzed for total cholesterol (TC), triglycerides (TGs), HDL, LDL and VLDL. Among the various parameters tested triglyceride and VLDL levels were significantly higher in group-II and III as compared to controls (p?0.01). HDL levels were significantly lower in group-II and III as compared to control (p?0.05). HDL level was found reduced in group-III as compared to Group-II (p?0.01). There was no significant change (p>0.05) observed in total cholesterol and LDL levels in between healthy controls and CRF patients with & without hemodialysis. There was no significant difference (p>0.05) observed between lipid profile in male and female patients in control group and in CRF patients with and without hemodialysis. It is concluded that both male and female patients of CRF with and without hemodialysis have characteristic dyslipidemias without any discrimination of sex and it is not attenuated by the hemodialysis process. Index Terms- Chronic renal failure, hemodialysis, lipid profile, cardiovascular diseases D

  15. Incidence of Second Malignancies Among Patients Treated With Proton Versus Photon Radiation

    SciTech Connect (OSTI)

    Chung, Christine S., E-mail: chungc1@sutterhealth.org [Department of Radiation Oncology, Alta Bates Summit Medical Center, Berkeley, California (United States); Yock, Torunn I. [Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts (United States); Nelson, Kerrie [Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts (United States); Xu, Yang [Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts (United States); Keating, Nancy L. [Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts (United States); Department of General Internal Medicine, Brigham and Women's Hospital, Boston, Massachusetts (United States); Tarbell, Nancy J. [Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts (United States); Office of the Executive Dean, Harvard Medical School, Boston, Massachusetts (United States)

    2013-09-01T23:59:59.000Z

    Purpose: Proton radiation, when compared with photon radiation, allows delivery of increased radiation dose to the tumor while decreasing dose to adjacent critical structures. Given the recent expansion of proton facilities in the United States, the long-term sequelae of proton therapy should be carefully assessed. The objective of this study was to compare the incidence of second cancers in patients treated with proton radiation with a population-based cohort of matched patients treated with photon radiation. Methods and Materials: We performed a retrospective cohort study of 558 patients treated with proton radiation from 1973 to 2001 at the Harvard Cyclotron in Cambridge, MA and 558 matched patients treated with photon therapy in the Surveillance, Epidemiology, and End Results (SEER) Program cancer registry. Patients were matched by age at radiation treatment, sex, year of treatment, cancer histology, and site. The main outcome measure was the incidence of second malignancies after radiation. Results: We matched 558 proton patients with 558 photon patients from the Surveillance, Epidemiology, and End Results registry. The median duration of follow-up was 6.7 years (interquartile range, 7.4) and 6.0 years (interquartile range, 9.3) in the proton and photon cohorts, respectively. The median age at treatment was 59 years in each cohort. Second malignancies occurred in 29 proton patients (5.2%) and 42 photon patients (7.5%). After we adjusted for sex, age at treatment, primary site, and year of diagnosis, proton therapy was not associated with an increased risk of second malignancy (adjusted hazard ratio, 0.52 [95% confidence interval, 0.32-0.85]; P=.009). Conclusions: The use of proton radiation therapy was not associated with a significantly increased risk of secondary malignancies compared with photon therapy. Longer follow-up of these patients is needed to determine if there is a significant decrease in second malignancies. Given the limitations of the study, these results should be viewed as hypothesis generating.

  16. Risk of Radiation Retinopathy in Patients With Orbital and Ocular Lymphoma

    SciTech Connect (OSTI)

    Kaushik, Megha; Pulido, Jose S. [Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota (United States)] [Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota (United States); Schild, Steven E. [Division of Radiation Oncology, Mayo Clinic, Scottsdale, Arizona (United States)] [Division of Radiation Oncology, Mayo Clinic, Scottsdale, Arizona (United States); Stafford, Scott, E-mail: stafford.scott@mayo.edu [Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States)] [Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States)

    2012-12-01T23:59:59.000Z

    Purpose: Radiation retinopathy is a potential long-term complication of radiation therapy to the orbit. The risk of developing this adverse effect is dose dependent; however, the threshold is unclear. The aim of this study was to identify the risk of developing radiation retinopathy at increasing radiation doses. Methods and Materials: A 40-year retrospective review was performed of patients who received external beam radiation therapy for ocular/orbital non-Hodgkin lymphoma (NHL). Results: Sixty-seven patients who had at least one ophthalmic follow-up examination were included in this study. Most patients (52%) were diagnosed with NHL involving the orbit. Patients received external beam radiation therapy at doses between 1886 and 5400 cGy (mean, 3033 {+-} 782 cGy). Radiation retinopathy developed in 12% of patients, and the median time to diagnosis was 27 months (range, 15-241months). The mean prescribed radiation dose in patients with retinopathy was 3309 {+-} 585 cGy, and the estimated retinal dose (derived by reviewing the dosimetry) was 3087 {+-} 1030 cGy. The incidence of retinopathy increased with dose. The average prescribed daily fractionated dose was higher in patients who developed retinopathy than in patients who did not (mean, 202 cGy vs 180 cGy, respectively; P = .04). More patients with radiation retinopathy had comorbid diabetes mellitus type 2 than patients without retinopathy (P = .015). In our study, the mean visual acuity of the eyes that received radiation was worse than that of the eyes that did not (P = .027). Other postradiotherapy ocular findings included keratitis (6%), dry eyes (39%), and cataract (33%). Conclusions: Radiation retinopathy, a known complication of radiotherapy for orbital tumors, relates to vascular comorbidities and dose. Higher total doses and larger daily fractions (>180 cGy) appear to be related to higher rates of retinopathy. Future larger studies are required to identify a statistically significant threshold for the development of retinopathy.

  17. Gamma Knife Radiosurgery for Patients With Nonfunctioning Pituitary Adenomas: Results From a 15-Year Experience

    SciTech Connect (OSTI)

    Pollock, Bruce E. [Department of Neurological Surgery, Mayo Clinic College of Medicine, Rochester, MN (United States); Department of Radiation Oncology, Mayo Clinic College of Medicine, Rochester, MN (United States)], E-mail: pollock.bruce@mayo.edu; Cochran, Joseph [Department of Neurological Surgery, Mayo Clinic College of Medicine, Rochester, MN (United States); Natt, Neena [Department of Endocrinology, Diabetes and Metabolism, Mayo Clinic College of Medicine, Rochester, MN (United States); Brown, Paul D. [Department of Radiation Oncology, Mayo Clinic College of Medicine, Rochester, MN (United States); Erickson, Dana [Department of Endocrinology, Diabetes and Metabolism, Mayo Clinic College of Medicine, Rochester, MN (United States); Link, Michael J. [Department of Neurological Surgery, Mayo Clinic College of Medicine, Rochester, MN (United States); Garces, Yolanda I.; Foote, Robert L.; Stafford, Scott L.; Schomberg, Paula J. [Department of Radiation Oncology, Mayo Clinic College of Medicine, Rochester, MN (United States)

    2008-04-01T23:59:59.000Z

    Purpose: To evaluate the efficacy and complications of stereotactic radiosurgery for patients with nonfunctioning pituitary adenomas (NFA). Methods and Materials: This was a retrospective review of 62 patients with NFA undergoing radiosurgery between 1992 and 2004, of whom 59 (95%) underwent prior tumor resection. The median treatment volume was 4.0 cm{sup 3} (range, 0.8-12.9). The median treatment dose to the tumor margin was 16 Gy (range, 11-20). The median maximum point dose to the optic apparatus was 9.5 Gy (range, 5.0-12.6). The median follow-up period after radiosurgery was 64 months (range, 23-161). Results: Tumor size decreased for 37 patients (60%) and remained unchanged for 23 patients (37%). Two patients (3%) had tumor growth outside the prescribed treatment volume and required additional treatment (fractionated radiation therapy, n = 1; repeat radiosurgery, n 1). Tumor growth control was 95% at 3 and 7 years after radiosurgery. Eleven (27%) of 41 patients with normal (n = 30) or partial (n = 11) anterior pituitary function before radiosurgery developed new deficits at a median of 24 months after radiosurgery. The risk of developing new anterior pituitary deficits at 5 years was 32%. The 5-year risk of developing new anterior pituitary deficits was 18% for patients with a tumor volume of {<=}4.0 cm{sup 3} compared with 58% for patients with a tumor volume >4.0 cm{sup 3} (risk ratio 4.5; 95% confidence interval = 1.3-14.9, p = 0.02). No patient had a decline in visual function. Conclusions: Stereotactic radiosurgery is effective in the management of patients with residual or recurrent NFA, although longer follow-up is needed to evaluate long-term outcomes. The primary complication is hypopituitarism, and the risk of developing new anterior pituitary deficits correlates with the size of the irradiated tumor.

  18. SU-E-I-95: Personalized Radiography Technical Parameters for Each Patient and Exam

    SciTech Connect (OSTI)

    Soares, F; Camozzato, T; Kahl, G; Soares, A; Zottis, A [Instituto Federal de Santa Catarina, Florianopolis (Brazil)

    2014-06-01T23:59:59.000Z

    Purpose: To determine exact electrical parameters (kV, mAs) a radiological technologist shall use taking account the exam and patient's structure, with guarantee of minimum dose and adequate quality image. Methods: A patient's absorbed dose equation was developed by means of Entrance Skin Dose (ESD), irradiated area and patient width for specific anatomy. ESD is calculated from a developed equation, where entrance surface air-KERMA and backscatter factor are included, with air-to-skin coefficient conversion. We developed specific Lambert-Beer attenuation equations derived from mass energy-absorption coefficients data for skin, fat, and muscle and bone as one tissue. Anatomy tissue thickness distribution at central X-ray location in anteroposterior incidence for hand and chest, was estimate by discounting constant skin and bone thickness from patient measured width, assuming the result as muscle and fat. A clinical research at a big hospital were executed when real parameters (kV, mAs, filtration, ripple) used by technologists were combined with the image quality and patient's data: anatomy width, height and weight. A correlation among the best images acquired and electrical parameters used were confronted with patient's data and dose estimation. The best combinations were used as gold standards. Results: For each anatomy, two equations were developed to calculate voltage (kV) and exposure (mAs) to reproduce and interpolate the gold standards. Patient is measured and data are input into equations, giving radiological technologists the right set of electrical parameters for that specific exam. Conclusion: This work indicates that radiological technologist can personalize the exact electrical parameters for each patient exam, instead of using standard values. It also guarantee that patients under or over-sized measures will receive the right dose for the best image. It will stop wrong empiric adjusts technologists do when examining a non-standard patient and reduce probability of radiography retaken because of over or under exposition.

  19. Pretreatment Staging Positron Emission Tomography/Computed Tomography in Patients With Inflammatory Breast Cancer Influences Radiation Treatment Field Designs

    SciTech Connect (OSTI)

    Walker, Gary V. [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Niikura, Naoki [Department of Breast and Endocrine Surgery, Tokai University School of Medicine, Kanagawa (Japan)] [Department of Breast and Endocrine Surgery, Tokai University School of Medicine, Kanagawa (Japan); Yang Wei [Department of Diagnostic Radiology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Diagnostic Radiology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Rohren, Eric [Department of Nuclear Medicine, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Nuclear Medicine, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Valero, Vicente [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Woodward, Wendy A. [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Alvarez, Ricardo H. [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Lucci, Anthony [Department of Surgical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Surgical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Ueno, Naoto T. [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Buchholz, Thomas A., E-mail: tbuchhol@mdanderson.org [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

    2012-08-01T23:59:59.000Z

    Purpose: Positron emission tomography/computed tomography (PET/CT) is increasingly being utilized for staging of inflammatory breast cancer (IBC). The purpose of this study was to define how pretreatment PET/CT studies affected postmastectomy radiation treatment (PMRT) planning decisions for IBC. Methods and Materials: We performed a retrospective analysis of 62 patients diagnosed with IBC between 2004 and 2009, who were treated with PMRT in our institution and who had a staging PET/CT within 3 months of diagnosis. Patients received a baseline physical examination, staging mammography, ultrasonographic examination of breast and draining lymphatics, and chest radiography; most patients also had a bone scan (55 patients), liver imaging (52 patients), breast MRI (46 patients), and chest CT (25 patients). We compared how PET/CT findings affected PMRT, assuming that standard PMRT would target the chest wall, level III axilla, supraclavicular fossa, and internal mammary chain (IMC). Any modification of target volumes, field borders, or dose prescriptions was considered a change. Results: PET/CT detected new areas of disease in 27 of the 62 patients (44%). The areas of additional disease included the breast (1 patient), ipsilateral axilla (1 patient), ipsilateral supraclavicular (4 patients), ipsilateral infraclavicular (1 patient), ipsilateral IMC (5 patients), ipsilateral subpectoral (3 patients), mediastinal (8 patients), other distant/contralateral lymph nodes (15 patients), or bone (6 patients). One patient was found to have a non-breast second primary tumor. The findings of the PET/CT led to changes in PMRT in 11 of 62 patients (17.7%). These changes included additional fields in 5 patients, adjustment of fields in 2 patients, and higher doses to the supraclavicular fossa (2 patients) and IMC (5 patients). Conclusions: For patients with newly diagnosed IBC, pretreatment PET/CT provides important information concerning involvement of locoregional lymph nodes, mediastinal lymph nodes, and unsuspected sites of distant metastasis. This information is important in the design of radiotherapy treatment fields and, therefore, we recommend that PET/CT be a component of initial staging for IBC.

  20. Does administering iodine in radiological procedures increase patient doses?

    SciTech Connect (OSTI)

    He, Wenjun; Yao, Hai, E-mail: haiyao@clemson.edu [Clemson-MUSC Bioengineering Program, Department of Bioengineering, Clemson University, Charleston, South Carolina 29425 (United States); Huda, Walter; Mah, Eugene [Department of Radiology and Radiological Science, Medical University of South Carolina (MUSC), Charleston, South Carolina 29425 (United States)

    2014-11-01T23:59:59.000Z

    Purpose: The authors investigated the changes in the pattern of energy deposition in tissue equivalent phantoms following the introduction of iodinated contrast media. Methods: The phantom consisted of a small “contrast sphere,” filled with water or iodinated contrast, located at the center of a 28 cm diameter water sphere. Monte Carlo simulations were performed using MCNP5 codes, validated by simulating irradiations with analytical solutions. Monoenergetic x-rays ranging from 35 to 150 keV were used to simulate exposures to spheres containing contrast agent with iodine concentrations ranging from 1 to 100 mg/ml. Relative values of energy imparted to the contrast sphere, as well as to the whole phantom, were calculated. Changes in patterns of energy deposition around the contrast sphere were also investigated. Results: Small contrast spheres can increase local absorbed dose by a factor of 13, but the corresponding increase in total energy absorbed was negligible (<1%). The highest localized dose increases were found to occur at incident photon energies of about 60 keV. For a concentration of about 10 mg/ml, typical of clinical practice, localized absorbed doses were generally increased by about a factor of two. At this concentration of 10 mg/ml, the maximum increase in total energy deposition in the phantom was only 6%. These simulations demonstrated that increases in contrast sphere doses were offset by corresponding dose reductions at distal and posterior locations. Conclusions: Adding iodine can result in values of localized absorbed dose increasing by more than an order of magnitude, but the total energy deposition is generally very modest (i.e., <10%). Their data show that adding iodine primarily changes the pattern of energy deposition in the irradiated region, rather than increasing patient doses per se.