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Дисертації з теми "Spine Measurement"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 18 лютого 2022

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1

Hauerstock, David. "Telemetric measurement of compressive loads in the sheep lumbar spine." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30785.

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The goal of this study was to develop and validate a system for the telemetric measurement of in vivo compressive intervertebral loads in the sheep, and to measure these loads in a variety of activities.<br>A miniature load cell and radio transmitter were implanted in the L3--L4 space of the spine. A total of four sheep were operated on; one was sacrificed five days after surgery, due to failure of the transmitter, and another was sacrificed after failing to ambulate for two weeks after surgery. The other two animals (average mass 67 kg) were kept for five weeks, during which a range of activi

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2

Zheng, Yalin. "Automated segmentation of lumbar vertebrae for the measurement of spine kinematics." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288154.

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3

Hindle, Richard John. "Three-dimensional kinematics of the human back in the normal and pathologic spine." Thesis, Durham University, 1989. http://etheses.dur.ac.uk/6513/.

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This thesis investigated the relationship between the three-dimensional kinematics of the human back and spinal pathology. This required the development of a system capable of the in vivo measurement of spinal movement non-invasively and in three-dimensions. The opto-electronic CODA-3 Scanner proved unsatisfactory in this respect. The electro-magnetic 3SPACE Isotrak, however, was found to be an accurate and reliable system during a study of twisting in flexed postures. Available axial rotation was significantly increased in some degree of sagittal flexion suggesting that this may be a mechanis

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4

Harvey, Steven Brian. "Interactive computer methods for morphometric and kinematic measurement of images of the spine." Thesis, University of Aberdeen, 1999. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU116153.

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The aim of this project was to develop robust interactive computer methods for measuring the shape and movement of the lumbar spine vertebrae from lateral radiographs of the spine. In order to achieve this aim, two software packages were written - the Aberdeen Vertebral Morphometry System (AVMS) and the Aberdeen Spinal Videofluoroscopy System (ASVS). AVMS was designed to analyse static images from dual energy x-ray absorptiometry (DXA) imaging densitometers. Comparative precision tests of the ability of AVMS software and Lunar EXPERT-XL software to measure vertebral height were undertaken usin

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5

Breen, Alan Clark. "The measurement of the kinematics of the human spine using videofluoroscopy and image processing." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303090.

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6

Darlington, Sarah Elizabeth. "Effect of intra-abdominal fat on the accuracy of DXA lumbar spine bone mineral density measurement using DXA body composition measurements." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/44881/.

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In the diagnosis of osteoporosis, dual-energy X-ray absorptiometry (DXA) is the accepted method for measuring bone mineral density (BMD) due to its good precision. However, accuracy is compromised by two assumptions: (1) the body is composed of only soft tissue and bone mineral and (2) the composition of tissue overlying bone is equal to that adjacent to bone. To diagnosis osteoporosis, BMD is compared to that of a young healthy population to calculate a T-score. BMD is normal if T-score>-1 and osteoporotic if < -2.5. The aim of this study was to use DXA whole body (WB) scans to quantify varia

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7

Beange, Kristen. "Validation of Wearable Sensor Performance and Placement for the Evaluation of Spine Movement Quality." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/38698.

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Inertial measurement units (IMUs) are being recognized as a portable and cost-effective alternative to motion analysis systems and have the potential to be introduced into clinical settings for the assessment of functional movement quality of the spine in patients with low back pain. However, uncertainties regarding sensor accuracy and reliability are limiting the widespread use and acceptance of IMU-based assessments into routine clinical practice. The objective of this work was to assess the performance of inexpensive wearable IMUs (Mbientlab MetaMotionR IMUs; Mbientlab Inc., San Francisco,

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8

MacMillan, Erin Leigh. "Myelin water measurement by magnetic resonance imaging in the healthy human spinal cord : reproducibility and changes with age." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1887.

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Multi-echo T2 relaxation measurements of the human spinal cord (SC) reveal a short T2 pool of water believed to arise from water trapped between myelin bilayers, where the proportion of this water to the total water signal is called the myelin water fraction (MWF). In the present study, MWF were measured in the healthy human cervical spine at the C4-C6 vertebral levels in vivo using a 3D modified 32 echo CPMG sequence to acquire axial slices perpendicular to the cord. Volunteers were recruited in two age ranges, under 30 years old and over 50 years old, and a subset of both groups were scann

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9

Toosizadeh, Nima. "Time-dependent assessment of the human lumbar spine in response to flexion exposures: in vivo measurement and modeling." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19274.

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Among several work-related injuries, low back disorders (LBDs) are the leading cause of lost workdays, and with annual treatment costs in excess of $10 billion in the US. Epidemiological evidence has indicated that prolonged and/or repetitive non-neutral postures, such as trunk flexion, are commonly associated with an increased risk of LBDs. Trunk flexion can result in viscoelastic deformations of soft tissues and subsequent mechanical and neuromuscular alterations of the trunk, and may thereby increase LBD risk. While viscoelastic behaviors of isolated spinal motion segments and muscles have

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10

Russell, Patricia Anne Hartley. "Measurement of the three-dimensional kinematics of the human lumbar and cervical spine using the 3Space Isotrak system." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/5650/.

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11

Amell, Tyler K. "The effect of axis placement on measurement of peak moment during isokinetic flexion and extension in the lumbar spine." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22267.pdf.

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12

Gildenhuys, Fourie. "An improved device to measure human response to dorsiflexion and plantar flexion perturbations." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/96000.

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Thesis (MEng) -- Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The Dorsiflexometer is a device designed and built for the assessment of a patient’s balance capabilities. The birth of the Dorsiflexometer is due to a serious need for physiological balance assessment equipment, capable of conducting dynamic tests in the clinical setting. This is accomplished by recording and analysing the patient’s response to sagittal plane perturbations. The Dorsiflexometer is operated from a computer software interface program. It uses the measurements from a single force plate to calculate four ba

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13

Langford, Nancy Jane. "The Relationship of the Sit and Reach Test to Criterion Measures of Hamstring and Back Flexibility in Adult Males and Females." Thesis, North Texas State University, 1987. https://digital.library.unt.edu/ark:/67531/metadc501137/.

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The purpose of this study was to examine the criterion-related validity of the sit and reach test as a measure of hamstring and low back flexibility in adult males and females. Subjects were 52 males and 52 females, 20 to 45 years of age. Hamstring flexibility was measured using a goniometer. Spinal flexibility was measured using a tape measure and an inclinometer. The sit and reach test was performed according to the AAHPERD Health Related Fitness Test Manual. Data were analyzed using correlations and appropriate descriptive statistics. Conclusions of the investigation were: 1) in adult males

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14

Gesbert, Jean-Charles. "Modélisation 3D du rachis scoliotique : fusion de données et personnalisation expérimentale." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S051/document.

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Ces travaux s'inscrivent dans le cadre d'un projet de recherche translationnel visant à améliorer la conception des corsets orthopédiques de traitement de la scoliose par la mise en place, par méthode inverse, d'un modèle biomécanique global, simplifié et personnalisé, propre au tronc de chaque patient scoliotique. Ils constituent la première étape de ce projet, à savoir, développer et mettre en œuvre des techniques, outils et protocoles permettant, d'une part, la construction d'un modèle géométrique 3D de la surface externe et des éléments internes du tronc du patient à partir de radiographie

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15

Ronkainen, Jouni A. "Laser based tracking and spin measurement." Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/10800.

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The sports ball market is extremely competitive and in the US alone valued in excess of $1305 million (SGMA 2008). Original equipment manufacturers (OEMs) are continually trying to create a competitive edge over their rivals. In order to research and develop sports balls it is vital to quantitatively measure launch and flight characteristics of the ball, in an attempt to create a ball that has better flight and/or impact characteristics. A launch or flight monitor allows consistent measurement and benchmarking of the ball under test. Current top of the range soccer ball monitors are assessed f

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16

Smith, Gregory A. "Continuous Optical Measurement of Cold Atomic Spins." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/194781.

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Анотація:

Quantum measurement is one of the most important features of quantum theory. Although mathematical predictions have been verified in great detail, practical implementation has lagged behind. Only recently have people begun to take advantage of quantum measurement properties to produce new technologies. This research helps fill that technological gap by experimental examination of a continuous, optical measurement for an ensemble of cold atomic spins. The essential physics reduces to the interaction between an atomic ensemble and a weak optical field, which has many well known results. While th

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17

Schwab, Adele Ann. "Spin-squeezing of ⁸⁷Rb via optical measurement." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45338.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.<br>Includes bibliographical references (p. 55-57).<br>This project aims to reduce measurement uncertainty in atomic clocks by squeezing the collective spin of atoms. Spin-squeezing reduces noise below the standard quantum limit where precision scales as 1/ [square root of] N, allowing us to instead approach the Heisenberg limit where it scales as 1/N. We report spin-squeezing of the (F = 2, mR = 0) --> (F = 1, mF = 0) hyperfine transition of the 5S1/2 level of ⁸⁷Rb. We also demonstrate a viable setup for the spin-squ

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18

Dahliah, Diana Faraj. "Andreev Spectroscopy Measurement Of GaMnAs Spin Polarization." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1344427042.

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19

Pothuganti, Virabadra Phani Raju P. K. "Feasibility study of ultrasound measurements on the human lumbar spine." Auburn, Ala., 2006. http://hdl.handle.net/10415/1302.

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20

Stockton, John Kenton Mabuchi Hideo. "Continuous quantum measurement of cold alkali-atom spins /." Diss., Pasadena, Calif. : California Institute of Technology, 2007. http://resolver.caltech.edu/CaltechETD:etd-02172007-172548.

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21

Monat, Heath Barnhart. "Lumbar Skin Profile Prediction from Anterior and Lateral Torso Measurements." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343062090.

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22

Furuta, Suguru. "Control and measurement of quantum spins : theory and simulations." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615036.

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23

Lai, Wai Cheu. "Spin-spin coupling measurements in solid-state NMR and applications to rhodopsin." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417982.

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24

Hauger, Markus. "Measurement of the neutron proton spin correlation parameter Axz /." [S.l.] : [s.n.], 2002. http://edoc.unibas.ch/diss/DissB_6024.

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25

Chen, Kai, and Shufeng Zhang. "Roles of nonlocal conductivity on spin Hall angle measurement." AMER PHYSICAL SOC, 2017. http://hdl.handle.net/10150/625981.

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Spin Hall angle characterizes the rate of spin-charge current conversion and it has become one of the most important material parameters for spintronics physics and device application. A long-standing controversy is that the spin Hall angles for a given material measured by spin pumping and by spin Hall torque experiments are inconsistent and they could differ by as much as an order of magnitude. By using the linear response spin transport theory, we explicitly formulate the relation between the spin Hall angle and measured variables in different experiments. We find that the nonlocal conducti

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26

Mohamad, Haidar Jawad. "Ultrafast optical measurements of spin-polarized electron dynamics in nanostructured magnetic materials." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18425.

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At present, electronic devices depend upon electric charge to transfer and record information. However, such devices are approaching a scaling limit due to Joule heating. Spintronics offers a solution by exploiting the spin rather than the charge of the electron, since the propagation of spin current can in principle occur without dissipation. Immediate applications lie in magnetic random access memory and novel media for hard disk recording. Within this thesis, the Magneto-optical Kerr effect (MOKE) has been used to measure the static and dynamic magnetic properties of a number of different t

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27

Parno, Diana Marwick Seymour. "Measurements of the Double-Spin Asymmetry A₁ on Helium-3: Toward a Precise Measurement of the Neutron A₁." Research Showcase @ CMU, 2011. http://repository.cmu.edu/dissertations/554.

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The spin structure of protons and neutrons has been an open question for nearly twenty-five years, after surprising experimental results disproved the simple model in which valence quarks were responsible for nearly 100% of the nucleon spin. Diverse theoretical approaches have been brought to bear on the problem, but a shortage of precise data – especially on neutron spin structure – has prevented a thorough understanding. Experiment E06-014, conducted in Hall A of Jefferson Laboratory in 2009, presented an opportunity to add to the world data set for the neutron in the poorly covered valence-

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28

Rudolph, Matthew (Matthew Scott). "Measurement of [gamma](1S) spin alignment with the CMS detector." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/77489.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2011.<br>In title on title-page, "[gamma]" appears as the lower-case Greek letter. Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 135-137).<br>This thesis presents a measurement of the spin alignment of prompt [gamma](1S) mesons produced in proton-proton collisions at [square root of]s = 7 TeV at the Large Hadron Collider using the Compact Muon Solenoid detector. Approximately 1 fb-1 of data taken during the year 2011 is analyzed. The decay to two muons is used to identify these decays,

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29

Xing, Zengping. "Magnetoelectric Device and the Measurement Unit." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/27387.

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Анотація:

Magnetic sensors are widely used in the field of mineral, navigational, automotive, medical, industrial, military, and consumer electronics. Many magnetic sensors have been developed that are generated by specific laws or phenomena: such as search-coil, fluxgate, Hall Effect, anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), magnetoelectric (ME), magnetodiode, magnetotransictor, fiber-optic, optical pump, superconducting quantum interference device (SQUID), etc. Each of these magnetic field sensors has their merits and application areas. For low power consumption (<10uW), qua

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30

Horton, Dean. "Testing the SUSY hypothesis though naturalness ans spin measurements." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543461.

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31

Giles, Brandon L. "Opto-thermal measurements of thermally generated spin current in Yttrium Iron Garnet." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503024951599588.

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32

Anilkumar, Ravi. "Energy-Efficient Measurement of Coverage in Distributed Sensor Networks." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/9787.

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Large-scale sensor networks have become a reality due to recent developments in sensor node hardware and algorithms. Sensor networks can provide real-time information based on detection and tracking. This information cannot be reliable if little is known about the sensor coverage of the network, which can be defined as the total sensing range of the network due to contributions from each sensor node. Knowledge about coverage can also be useful in determining if there is any gap in coverage in the region of interest as well as improving the algorithm that determines the placement of nodes. Alth

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33

鄧樹恩 and Shu Yan Tang. "Measurement of microwave absorption in cuprate superconductors by electron spin resonance." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31213662.

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34

Tang, Shu Yan. "Measurement of microwave absorption in cuprate superconductors by electron spin resonance /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17311998.

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35

Dreiser, Jan. "Optical study, preparation and measurement of a single quantum-dot spin." kostenfreifrei, 2007. http://e-collection.ethbib.ethz.ch/view/eth:29799.

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36

Fersch, Robert G. "Measurement of inclusive proton double -spin asymmetries and polarized structure functions." W&M ScholarWorks, 2008. https://scholarworks.wm.edu/etd/1539623531.

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The scattering of polarized electrons from a polarized proton target provides a means for studying the internal spin structure of the proton. The CLAS (CEBAF Large Acceptance Spectrometer) EG1b experiment in Hall-B at Jefferson Laboratory measured double-spin inclusive and exclusive electron-nucleon scattering asymmetries using longitudinally polarized frozen NH3 and ND3 targets and a longitudinally polarized electron beam at 4 different energies (1.6, 2.5, 4.2, 5.6 GeV). Extraction of the virtual photon asymmetry Ap1 (for 0.05 GeV2 < Q2 < 5.0 GeV2) provides precision measurements of the po

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37

McLaughlan, Thomas. "Measurement of spin correlation in top quark pair production at ATLAS." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/4826/.

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This thesis presents a study of spin correlation in ttˉ production in the ATLAS detector, in proton-proton collisions, corresponding to an integrated luminosity of 4:7fb\(^1\), with a centre of mass energy of \(\surd\)s = 7 TeV. Both the dilepton and single lepton channels are considered, the latter providing a greater challenge due to the necessity to reconstruct the down-type quark resulting from the W boson decay. A simple technique is employed to reconstruct single lepton ttˉ events, with the transverse angle between the charged lepton and down-type quark used as a probe of the spin correl

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38

Segal, Michael Ph D. Massachusetts Institute of Technology. "Measurement and control of exciton spin in organic light emitting devices." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42245.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>Includes bibliographical references (p. 199-215).<br>Organic semiconductors are a promising new material set for electronic and optoelectronic devices. Their properties can be precisely controlled through chemistry, and they are well-suited for large-area, flexible, and low-cost devices. Optical emission and absorption in these materials is mediated by strongly-bound electron-hole pairs called "excitons". While the function of many organic electronic devices depends on exciton

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39

Tipton, Bryan E. "Measurement of polarized parton distributions with spin-dependent deep-inelastic scattering." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85351.

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40

Crook, Nigel Paul. "The application of quantitative environmental magnetic measurements to sedimentary systems." Thesis, Manchester Metropolitan University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248812.

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41

Morecroft, Deborah. "In-situ magnetoresistance measurements during patterning of spin valve devices." Thesis, University of Cambridge, 2003. https://www.repository.cam.ac.uk/handle/1810/34689.

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This dissertation describes an experimental study on the patterning of thin films and spin valve devices. Initially the change in the magnetisation reversal of ferromagnetic Ni80Fe15Mo5 thin films was investigated as the shape anisotropy was increased using optical lithography to pattern wire arrays. These structures show a progressive increase in coercivity and a transition between single and two-stage reversal with increasing milling depth. A similar patterning technique was applied to unpinned (Ni80Fe20/Cu/Ni80Fe20) pseudo spin valve (PSV) structures in order to enhance the coercivity of on

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42

Dylla, Thorsten. "Electron spin resonance and transient photocurrent measurements on microcrystalline silicon." [S.l. : s.n.], 2004. http://www.diss.fu-berlin.de/2005/209/index.html.

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43

Anderson, Mark David. "Beam spin asymmetry measurements for two pion photoproduction at CLAS." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6957/.

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The overarching goal of this analysis, and the many like it, is to develop our understanding of the strong force interactions within the nucleon by examining the nature of their excitation spectra. As the resonances of these spectra have very short lifetimes (τ = 1 × 10 −23 s) and often have very similar masses, it is often impossible to directly observe them. Polarization observables allow us to study the resonances by looking at how they affect the spin state of final state particles. The beam asymmetry is a polarization observable that allows us to detect the sensitivity of these resonances

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44

Murakawa, Hiroshi. "Spin anisotropy of Cooper pairs in the spin-triplet superconductor Sr2RuO4 studied by Knight-shift measurements." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136755.

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45

Poltera, Carina M. "Numerical analysis of spline generated surface Laplacian for ellipsoidal head geometry." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1371849.

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Electroencephalography (EEG) is a valuable tool for clinical and cognitive applications. EEG allows for measuring and imaging of scalp potentials emitted by brain activity and allows researchers to draw conclusions about underlying brain activity and function. However EEG is limited by poor spatial resolution due to various factors. One reason is the fact that EEG electrodes are separated from current sources in the brain by cerebrospinal fluid (CSF), the skull, and the scalp. Unfortunately the conductivities of these tissues are not yet well known which limits the spatial resolution of EEG.Ba

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46

Xie, Jingyi. "Quantitative measurement of regional cerebral blood flow with arterial spin labelling imaging." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504384.

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47

Armstrong, Whitney Richard. "Measurement of the proton A1 and A2 spin asymmetries| Probing color forces." Thesis, Temple University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3702966.

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<p> The Spin Asymmetries of the Nucleon Experiment (SANE) measured the proton spin structure function <i>g</i><sub>2</sub> in a range of Bjorken <i>x,</i> 0.3 < <i>x</i> < 0.8, where extraction of the twist-3 matrix element <i>d</i><sub>2</sub><i><sup> p</sup></i> (an integral of <i>g</i><sub>2</sub> weighted by <i>x</i><sup>2</sup>) is most sensitive. The data was taken from <i>Q</i><sup>2</sup> equal to 2.5 <i>GeV</i><sup> 2</sup> up to 6.5 GeV<sup>2</sup>. In this polarized electron scattering off a polarized hydrogen target experiment, two double spin asymmetries, <i> A</i>&pa

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48

Hadden, J. P. "Photonic structures and techniques for enhanced measurement of spin qubits in diamond." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664971.

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The negatively charged nitrogen vacancy centre is a promising candidate for use as a single photon source for linear optical quantum information, and as a solid state spin for solid state quantum information and room temperature magnetometry. However low photon collection efficiency is a problem for each of these applications. We demonstrate how photon losses due to refraction can be eliminated through the use of Solid Immersion Lenses (SILs) nano-fabricated on the surface of diamond. Coherent electron spin manipulation and readout is demonstrated on NV- centres under SILs. We show initial inv

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49

Tallini, Hugh Arthur McLaren. "A measurement of the quark spin distributions of the nucleon at HERMES." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367159.

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50

Wöhrle, Hartmut. "Measurement of the neutron proton spin correlation parameter Azz at forward angles /." Basel : [s.n.], 2006. http://edoc.unibas.ch/diss/DissB_7464.

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