Academic literature on the topic 'Reflection coefficient'

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Journal articles on the topic "Reflection coefficient"

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Mallick, Subhashis. "A simple approximation to the P‐wave reflection coefficient and its implication in the inversion of amplitude variation with offset data." GEOPHYSICS 58, no. 4 (1993): 544–52. http://dx.doi.org/10.1190/1.1443437.

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I derive an approximate formula for the plane P‐wave reflection coefficient as a function of ray‐parameter. The approximation shows that the behavior of the P‐wave reflection coefficient at nonnormal angles of incidence is mainly controlled by two parameters: (1) [Formula: see text], the fluid‐fluid reflection coefficient (i.e., the reflection coefficient when the S‐wave velocities in both media are set to zero) and (2) Δμ/ρ, the ratio of the contrast in shear moduli to the average bulk density. I also show that the other formulas for the P‐wave reflection coefficient given by R. Bortfeld and
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Hametner, Bernhard, Hannah Kastinger, and Siegfried Wassertheurer. "Simulating re-reflections of arterial pressure waves at the aortic valve using difference equations." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 234, no. 11 (2020): 1243–52. http://dx.doi.org/10.1177/0954411920942704.

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Re-reflections of arterial pressure waves at the aortic valve and their influence on aortic wave shape are only poorly understood so far. Therefore, the aim of this work is to establish a model enabling the simulation of re-reflection and to test its properties. A mathematical difference equation model is used for the simulations. In this model, the aortic blood pressure is split into its forward and backward components which are calculated separately. The respective equations include reflection percentages representing reflections throughout the arterial system and a reflection coefficient at
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Molchina, Nina A. "The Influence of Reflected Light on the Assessment of the Quality of Daylighting in Rooms with Vertical Windows." Issue 01-2024, no. 01-2024 (February 2024): 39–44. http://dx.doi.org/10.33383/2023-066.

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The light distribution nature determines the quality of luminous environment created by the daylight in the room. How the daylight flux received through the window will be distributed throughout the room depends on the reflectivity of the enclosing surfaces. However, the efficiency of using the reflectivity of the material is determined not only by the value of the reflection coefficient, but is a complex function depending on the geometric parameters of the room, the configuration and characteristics of the light openings, the ratio of the reflection coefficients of various surfaces of the ro
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Skopintseva, Lyubov, Milana Ayzenberg, Martin Landrø, Tatyana Nefedkina, and Arkady M. Aizenberg. "Long-offset AVO inversion of PP reflections from plane interfaces using effective reflection coefficients." GEOPHYSICS 76, no. 6 (2011): C65—C79. http://dx.doi.org/10.1190/geo2010-0079.1.

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A conventional amplitude variation with offset (AVO) inversion is based on geometrical seismics which exploit plane-wave reflection coefficients to describe the reflection phenomenon. Widely exploited linearizations of plane-wave coefficients are mostly valid at pre-critical offsets for media with almost flat and weak-contrast interfaces. Existing linearizations do not account for the seismic frequency range by ignoring the frequency content of the wavelet, which is a strong assumption. Plane-wave reflection coefficients do not fully describe the reflection of seismic waves at near-critical an
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Logoglu, Faruk, Stuti Surani, and Marek Flaska. "Investigating the Thickness-Dependent Scintillator-PMT Interface Reflection Coefficients with GAGG:Ce3+ Crystals Using the Dual-PMT Setup." EPJ Web of Conferences 288 (2023): 10015. http://dx.doi.org/10.1051/epjconf/202328810015.

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Recently, it has been shown through both Monte Carlo simulations and experiments that scintillator-PMT interface reflection coefficients could depend on crystal thickness. It has been argued that the thickness-dependency on the interface reflection coefficient is a result of bulk attenuation and surface reflections. So far, only LYSO:Ce3+ scintillators have been tested to investigate thickness-dependent reflection coefficients. In this work, the simulations and experiments are extended to GAGG:Ce3+ crystals. Moreover, a new experimental technique (the dualPMT setup) has been tested to measure
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Rotholz, Ersch. "A reflection coefficient bridge." IEEE Transactions on Instrumentation and Measurement IM-36, no. 1 (1987): 129–31. http://dx.doi.org/10.1109/tim.1987.6312646.

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Bondarenko, A. S., A. S. Borovkov, I. M. Malay, and V. A. Semyonov. "State primary standard of units of complex reflection coefficient and complex transmission coefficient in waveguide paths in the frequency range from 2.14 to 178.4 GHz GET 219-2024." Izmeritel`naya Tekhnika, no. 7 (September 5, 2024): 4–13. http://dx.doi.org/10.32446/0368-1025it.2024-7-4-13.

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Measurement of complex reflection coefficients and complex transmission coefficients of radio engineering devices in waveguide paths is widely used in radar and radio navigation in the development, production, testing and operation of microwave devices and components. These parameters characterize the quality of matching of transmit-receive paths at ultra-high frequencies. Before the introduction of the State primary standard of units of complex reflection coefficient and complex transmission coefficient in waveguide paths in the frequency range from 2.14 to 178.4 GHz GET 219-2024, metrologica
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Araki, Susumu, Daiki Watanabe, Shin-ichi Kubota, and Masaya Hashida. "EVALUATION OF HYDRAULIC PERFORMANCE OF WAVE DISSIPATING BLOCK USING POROSITY." Coastal Engineering Proceedings, no. 36v (December 31, 2020): 29. http://dx.doi.org/10.9753/icce.v36v.papers.29.

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The reflection and transmission of wave dissipating work mainly depend on the shape and porosity of wave dissipating block. However, the influence of the shape and porosity of wave dissipating block on the reflection and transmission has not been investigated sufficiently. The purpose of this study is to investigate the influence of the porosity of wave dissipating block on the reflection and transmission coefficients through a series of hydraulic experiments where four kinds of wave dissipating blocks were used. Wave dissipating blocks with smaller porosity provided a larger reflection coeffi
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Danilov, V. N. "ON THE PECULIARITIES OF REFLECTION OF SHEAR WAVES WITH LINEAR POLARIZATION FROM THE ROUGH SURFACE OF A CRACK." Kontrol'. Diagnostika, no. 313 (July 2024): 24–30. http://dx.doi.org/10.14489/td.2024.07.pp.024-030.

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The reflection coefficient of shear waves with SV- and SH-linear polarization from a statistically inhomogeneous surface consisting of scattering linear elements with a feature of their height distribution according to the normal law in a two-dimensional approximation is estimated. The estimation of the reflection coefficients in the reverse and forward directions is based on the calculation of the reflected wave energy flow propagating from an inhomogeneous surface averaged over the possible values of the height of the reflecting elements. It is theoretically shown and confirmed experimentall
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van der Baan, Mirko, and Dirk Smit. "Amplitude analysis of isotropic P-wave reflections." GEOPHYSICS 71, no. 6 (2006): C93—C103. http://dx.doi.org/10.1190/1.2335877.

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The analysis of amplitude variation with offset (AVO) of seismic reflections is a very popular tool for detecting gas sands. It is assumed in AVO, however, that plane-wave reflection coefficients can be used directly to analyze amplitudes measured in the time-offset domain. This is not true for near-critical angles of reflection. Plane-wave reflection coefficients incorporate the contribution of the head wave. A plane-wave decomposition such as a proper [Formula: see text] transform must be applied to the seismic data for accurate analysis of reflection coefficients near critical angles. Ampli
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Dissertations / Theses on the topic "Reflection coefficient"

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Bhalla, Gaurav Ph D. Massachusetts Institute of Technology. "Osmotic reflection coefficient." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51614.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2009.<br>Includes bibliographical references (leaves 149-152).<br>The presence of a discriminating barrier separating two solutions differing in concentration generates a net volume flux called osmotic flow. The simple case is of the ideal semi-permeable membrane which completely excludes the solute. The flow through such a membrane is directly proportional to the thermodynamic pressure drop less the osmotic pressure drop. For membranes which partially exclude the solute the osmotic contribution to flow is l
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Wang, Yang. "CdS Reflection Coefficient Determination via Photocurrent Spectroscopy." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1219593815.

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Tuerxunjiang, Abulikemu. "FDTD measurement of the reflection coefficient associated with total internal reflection from gainy Lorentzian media." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/A_Tuerxunjiang_120108.pdf.

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Thesis (M.S. in physics)--Washington State University, December 2008.<br>Title from PDF title page (viewed on July 10, 2009). "Department of Physics and Astronomy." Includes bibliographical references (p. 64-68).
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Cooper, James Roger. "A Multi-Wilkinson Power Divider Based Complex Reflection Coefficient Detector." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1603.

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In the field of applied electromagnetics, there is always a need to create new methods for electrical characterization of materials, systems, devices, etc. Many applications need small and/or inexpensive equipment in performing these characterizations. The current method for making measurements of electrical properties at frequencies above 300 MHz, the transmission/reflection method, has severe limitations in these areas due large size and high price of the necessary equipment for making them. Therefore, presented herein is the conceptualization, design and analysis of a complex reflection coe
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Durnan, Gregory J. "Parasitic Feed Elements for Reflector Antennas." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/368077.

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The use of parasitic wire dipoles are examined when placed in the proximity of a focused dipole feed in a parabolic reflector antenna. These parasitic elements are rotated around the feed dipole and a search is performed for the ideal positioning so as to yield maximum radiated power and main beam shift in order to develop a novel form of angle diversity. In addition a comparison is made between 2 element dipole feed structures and linearly and circularly polarised patch feed structures. In order to analytically model the structure, mutual coupling between feed elements is calculated taking in
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Pialucha, Tomasz Piotr. "The reflection coefficient from interface layers in NDT of adhesive joints." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8364.

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Mainou, Gomez José Francisco. "Amplifier for optimal reflection Coefficient of ultrasound transducer : A study of op amp based circuits for ultrasound transducers, targeted for low reflection Coefficient, high gain, and low noise." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18347.

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Reverberation is defined as equally-spaced, bright linear echoes resulting from reflection from specular-type interfaces. They are provoked by the acoustic Impedance change between the tissue and transducer front surface. B. Angelsen developed a mathematical approach to correct this ultrasound artifact by coupling the ultrasound transducer with an ideal electrical load in order to obtain zero reflection coefficients on the transducer from face [1]. However, when analyzing Impedance spectroscopy this approach cannot be achieved by using passive electronics in most simulated cases. Active impeda
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Nguyen, Thinh H. "Study of Reflection Coefficient in Different Resistive States of HfO2-based RRAM." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535702700125043.

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Kulkarni, Mandar S. "Multi-coefficient Dirichlet Neumann type elliptic inverse problems with application to reflection seismology." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2010r/kulkarni.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2009.<br>Title from PDF t.p. (viewed July 21, 2010). Additional advisors: Thomas Jannett, Tsun-Zee Mai, S. S. Ravindran, Günter Stolz, Gilbert Weinstein. Includes bibliographical references (p. 59-64).
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Schneck, Arne. "Bounds for optimization of the reflection coefficient by constrained optimization in hardy spaces." Karlsruhe Univ.-Verl. Karlsruhe, 2009. http://d-nb.info/995244383/04.

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Books on the topic "Reflection coefficient"

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Schneck, Arne. Bounds for optimization of the reflection coefficient by constrained optimization in hardy spaces. Univ.-Verl. Karlsruhe, 2009.

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Rüger, Andreas. Reflection coefficients and azimuthal AVO analysis in anisotropic media. Society of Exploration Geophysicists, 2002.

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Conway, G. D. Measurement of surface reflection coefficients via multiple reflection of microwaves. Plasma Physics Laboratory, University of Saskatchewan, 1994.

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Al, Kogut, and United States. National Aeronautics and Space Administration., eds. Reflection coefficients on surfaces of different periodic structure. National Aeronautics and Space Administration, 1997.

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Al, Kogut, and United States. National Aeronautics and Space Administration., eds. Reflection coefficients on surfaces of different periodic structure. National Aeronautics and Space Administration, 1997.

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1933-, Rosenberger F., and United States. National Aeronautics and Space Administration., eds. A proposed non-intrusive method for finding coefficients of slip and molecular reflectivity in microgravity. National Aeronautics and Space Administration, 1989.

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R. W. Anson W. J. Beatty. Table of Magnitude of Reflection Coefficient Versus Return Loss; NBS Technical Note 72. Creative Media Partners, LLC, 2021.

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R. W. Anson W. J. Beatty. Table of Magnitude of Reflection Coefficient Versus Return Loss; NBS Technical Note 72. Creative Media Partners, LLC, 2021.

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Reflection Coefficients & Azimuthal AVO Analysis. Society Of Exploration Geophysicists, 2002.

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Activity Theory In Hci Fundamentals And Reflections. Morgan & Claypool, 2012.

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Book chapters on the topic "Reflection coefficient"

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Weik, Martin H. "reflection coefficient." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_15838.

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Weik, Martin H. "Fresnel reflection coefficient." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_7724.

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Gooch, Jan W. "Reflection Coefficient or Reflectivity." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9861.

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Hu, Jishan, and Martin D. Kruskal. "Reflection Coefficient Beyond All Orders for Singular Problems." In Asymptotics beyond All Orders. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-0435-8_18.

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Qu, Jianmin. "Effect of Interface Roughness on the Reflection Coefficient." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2848-7_229.

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Chimenti, D. E., and S. I. Rokhlin. "Reflection Coefficient of a Fluid-Coupled Elastic Layer." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5772-8_22.

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Nicoletti, Denise, and Brita Sorli. "Measurement of Changes in Surface Roughness using Ultrasonic Reflection Coefficient." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1987-4_237.

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Shah, Vimal, Krishnan Balasubramaniam, R. Daniel Costley, and Jagdish Singh. "Measurement of Viscosity in Liquids Using Reflection Coefficient: Phase Difference Method." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0383-1_271.

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Ainslie, M. A. "The Influence of Sediment Rigidity on the Plane-Wave Reflection Coefficient." In Shear Waves in Marine Sediments. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3568-9_51.

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Dominijanni, Andrea, Nicolò Guarena, and Mario Manassero. "Phenomenological Analysis and Physical Interpretation of the Reflection Coefficient of Clays." In Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2227-3_19.

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Conference papers on the topic "Reflection coefficient"

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Horikawa, Tsuyoshi, Atsushi Kitamura, Masanori Yatani, and Nobuhiko Nishiyama. "Extraction of Reflection Coefficient in Silicon Waveguides using Multiple Reflection Signals in OFDR." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.af1e.4.

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We, for the first time, formulated the behavior of multiple reflections in waveguides with distributed reflections and demonstrated the precise extraction of reflection coefficients in silicon waveguides from OFDR reflection-distance profiles.
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Zhan, Lamin, Shihao Qi, Baoquan Hu, Yunzhong Wu, and Changzhong Chen. "Reflection Coefficient between Complex Impedances." In 2020 IEEE 3rd International Conference on Electronics Technology (ICET). IEEE, 2020. http://dx.doi.org/10.1109/icet49382.2020.9119648.

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Orji, Okwudili C., Walter Sollner, and Leiv J. Gelius. "Sea Surface Reflection Coefficient Estimation." In SEG Technical Program Expanded Abstracts 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segam2013-0944.1.

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C. R. Cruz, J., G. Garabito, and J. Urban. "Reflection Coefficient Determination Using Eigenwavefront Attributes." In 60th EAGE Conference and Exhibition. European Association of Geoscientists & Engineers, 1998. http://dx.doi.org/10.3997/2214-4609.201408330.

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Sato, Ryoichi, and Hiroshi Shirai. "Reflection/transmission coefficient for two-layered dielectric slab with internal multiple reflections." In 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2014. http://dx.doi.org/10.1109/aps.2014.6904682.

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Garbito, German, João C.R. Cruz, and Jaime Urban. "Reflection Coefficient Mapping In Multilayer Heterogeneous Media." In 6th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 1999. http://dx.doi.org/10.3997/2214-4609-pdb.215.sbgf200.

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Waterhouse, R. B., and D. Novak. "Design of low reflection coefficient printed antennas." In 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2014. http://dx.doi.org/10.1109/aps.2014.6905179.

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Kuhnel, T., X. ‐. Y. Li, and C. MacBeth. "Crack‐related variations in the reflection coefficient." In SEG Technical Program Expanded Abstracts 1997. Society of Exploration Geophysicists, 1997. http://dx.doi.org/10.1190/1.1885838.

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Liang, Kai, Xing‐yao Yin, and Guo‐chen Wu. "Approximate PP reflection coefficient in TTI media." In Beijing 2009 International Geophysical Conference and Exposition. Society of Exploration Geophysicists, 2009. http://dx.doi.org/10.1190/1.3603651.

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Ashley, J. "Speed Comparisons for Reflection Coefficient Measurement Methods." In 27th ARFTG Conference Digest. IEEE, 1986. http://dx.doi.org/10.1109/arftg.1986.323676.

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Reports on the topic "Reflection coefficient"

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Maidanik, G., and J. Dickey. Designing a Negligible Reflection Coefficient for a Uniform Panel with Compliant Layer. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada225708.

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DeMinco, Nicholas, J. Allen, Chriss Hammerschmidt, Robert Johnk, Paul McKenna, and Linh Vu. Free-Field Measurements of the Electrical Properties of Soil Using the Measured Reflection Coefficient at Normal Incidence and Multilayer Analysis. Institute for Telecommunication Sciences, 2013. https://doi.org/10.70220/3460tpck.

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Berman, David H. Effective Reflection Coefficients for the Mean Acoustic Field Between Two Rough Interfaces. Defense Technical Information Center, 1994. http://dx.doi.org/10.21236/ada281962.

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Deibele, C. Calculation fo the Reflection and Transmission Coefficients for Gradual Tapered Waveguide Structures. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/1967497.

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Shellman, C. H. A New Version of MODESRCH using Interpolated Values of the Magnetoionic Reflection Coefficients. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada179094.

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Upadhyaya, Shrini K., Abraham Shaviv, Abraham Katzir, Itzhak Shmulevich, and David S. Slaughter. Development of A Real-Time, In-Situ Nitrate Sensor. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7586537.bard.

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Although nitrate fertilizers are critical for enhancing crop production, excess application of nitrate fertilizer can result in ground water contamination leading to the so called "nitrate problem". Health and environmental problems related to this "nitrate problem" have led to serious concerns in many parts of the world including the United States and Israel. These concerns have resulted in legislation limiting the amount of nitrate N in drinking water to 10mg/g. Development of a fast, reliable, nitrate sensor for in-situ application can be extremely useful in dynamic monitoring of environmen
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Bruce. L51642 Field Nondestructive Examination of ERW Pipe Seams. Pipeline Research Council International, Inc. (PRCI), 1991. http://dx.doi.org/10.55274/r0010587.

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Electric resistance welded (ERW) pipe has been used in the natural gas transmission industry for many years. The Department of Transportation (DOT) has recently expressed interest in the integrity of the weld seam in pipelines made from ERW pipe that was manufactured prior to 1970. Specifically, the DOT has requested that natural gas transmission and hazardous liquid pipeline operators determine whether or not their pipelines that meet this description require hydrostatic proof testing. The initial concern from the DOT was for seam weld selective corrosion, although reference has since been ma
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Wei, Fulu, Ce Wang, Xiangxi Tian, Shuo Li, and Jie Shan. Investigation of Durability and Performance of High Friction Surface Treatment. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317281.

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The Indiana Department of Transportation (INDOT) completed a total of 25 high friction surface treatment (HFST) projects across the state in 2018. This research study attempted to investigate the durability and performance of HFST in terms of its HFST-pavement system integrity and surface friction performance. Laboratory tests were conducted to determine the physical and mechanical properties of epoxy-bauxite mortar. Field inspections were carried out to identify site conditions and common early HFST distresses. Cyclic loading test and finite element method (FEM) analysis were performed to eva
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