Journal articles: 'Propagation effects'

1

Michalska-Trautman, R. "Propagation Effects in Superfluorescence." Acta Physica Polonica A 130, no. 3 (September 2016): 734–36. http://dx.doi.org/10.12693/aphyspola.130.734.

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Uden, Austin. "Letters: Radio propagation effects." Weather 59, no. 1 (January 1, 2004): 24–25. http://dx.doi.org/10.1256/wea.145.03.

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Aoki, Y., T. Matsuyama, Yasuji Oda, Kenji Higashida, and Hiroshi Noguchi. "Effects of Hydrogen Gas Environment on Non-Propagation Phenomena of a Type 304 Austenitic Stainless Steel." Key Engineering Materials 297-300 (November 2005): 927–32. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.927.

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In order to investigate the hydrogen gas effect on non-propagation phenomena of a type 304 austenitic stainless steel, fatigue tests with in-situ observation using a Scanning Laser Microscope were performed in air, in 0.18MPa hydrogen gas and in 0.18MPa nitrogen gas. A nonpropagating crack was observed during the fatigue test in air. At almost the same stress level of non-propagating in air, non-propagating cracks were also observed in fatigue tests in hydrogen and in nitrogen. Stress level of the non-propagation is not sufficiently different in the three environments. However, the process up to non-propagation differs from each other, for example, the crack path and debris.

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CAMPOS, L. M. B. C., and P. M. V. M. MENDES. "On the effects of viscosity and anisotropic resistivity on the damping of Alfvén waves." Journal of Plasma Physics 63, no. 3 (April 2000): 221–38. http://dx.doi.org/10.1017/s0022377899008259.

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The equations of magnetohydrodynamics (MHD) are written for non-uniform viscosity and resistivity – the latter in the cases of Ohmic and anisotropic resistivity. In the case of Ohmic (anisotropic) diffusivity, there is (are) one (two) transverse components of the velocity and magnetic field perturbation(s), leading to a second-order (fourth-order) dissipative Alfvén- wave equation. In the more general case of dissipative Alfvén waves with isotropic viscosity and anisotropic resistivity, the fourth-order wave equation may be replaced by two decoupled second-order equations for right- and left-polarized waves, whose dispersion relations show that the first resistive diffusivity causes dissipation like the viscosity, whereas the second resistive diffusivity causes a change in propagation speed. The second resistive diffusivity invalidates the equipartition of kinetic and magnetic energy, modifies the energy flux through the propagation speed, and also changes the ratio of viscous to resistive dissipation. If the directions of propagation and polarization are equal (i.e. for right-polarized upward-propagating or left-polarized downward-propagating waves), the magnetic energy increases relative to the kinetic energy, the resistive dissipation increases relative to the viscous dissipation, and the total energy density and flux increase relative to the case of isotropic resistivity; the reverse is the case for opposite directions of propagation, i.e. upward-propagating left-polarized waves and downward-propagating right-polarized waves, which can lead to the existence of a critical layer. The role of the viscosity and first and second resistive diffusiveness on the dissipation of Alfvén waves is discussed with reference to the solar atmosphere.

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Cohen, Leon. "The effects of higher higher-order dispersion on pulse propagation." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A238. http://dx.doi.org/10.1121/10.0016131.

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We give explicit formulas for the propagation of a pulse in a dispersive medium governed by a general dispersion relation. In particular, we consider the mean and standard deviation of a propagating pulse and relate them to the parameters of the initial pulse and the dispersion relation. If the dispersion relation is expanded in a Taylor series, higher-order dispersion is when there are terms that are higher than quadratic. We show the effects of the higher-order dispersion on the propagation of the pulse's mean, standard deviation, and contraction/expansion time. Explicit examples will be given.

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Wang, Xi Shu, Jing Hong Fan, Bi Sheng Wu, and Ying Li. "Effects of Distance and Alignment Holes on Fatigue Crack Behaviors of Cast Magnesium Alloys." Advanced Materials Research 33-37 (March 2008): 13–18. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.13.

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To study the fatigue microcrack initiation and propagation behaviors of cast magnesium alloys, the small fatigue crack propagation tests were carried out using the in-situ observation with scanning electron microscope (SEM). All initiations and propagations of fatigue small cracks focused on effects of the interaction of artificial two small holes, which there are the different distances and alignments of two small holes. The results indicate that the fatigue small cracks of cast magnesium alloys occurred mainly at the defects or root of notch but the early stage crack propagations were influenced on the distance and alignment between two small holes. For cast AM50 and AM60B alloys, the fatigue small cracking prior to occurred at the weak dendrite boundary and had some concomitances such as the plastic deformation on surface of α-Mg phase. For AZ91 alloy, the fatigue cracking characterization depended mainly on the brittle properties of β-Mg17Al12 phase, which the multi cracks occurred at the boundaries of β-Mg17Al12 phase. The effect of notch on the fatigue cracking behavior becomes weaker when the radius of notch is over 3-4 times than that of average α-Mg grain size. The fatigue crack propagation behaviors varied with the different arrangements of two small holes. The effects of distance and alignment of two small holes on the fatigue crack propagation behaviors are also obvious.

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Sprague, Mark, Richard Raspet, and V. E. Ostashev. "Crosswind effects on acoustic propagation." Journal of the Acoustical Society of America 94, no. 3 (September 1993): 1872. http://dx.doi.org/10.1121/1.407628.

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8

McKenna, Mihan H., Robert G. Gibson, Bob E. Walker, Jason McKenna, Nathan W. Winslow, and Aaron S. Kofford. "Topographic effects on infrasound propagation." Journal of the Acoustical Society of America 131, no. 1 (January 2012): 35–46. http://dx.doi.org/10.1121/1.3664099.

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9

Nasalski, Wojciech. "Aberrationless effects of nonlinear propagation." Journal of the Optical Society of America B 13, no. 8 (August 1, 1996): 1736. http://dx.doi.org/10.1364/josab.13.001736.

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10

Shvets, A. V., and M. Hayakawa. "Polarisation effects for tweek propagation." Journal of Atmospheric and Solar-Terrestrial Physics 60, no. 4 (March 1998): 461–69. http://dx.doi.org/10.1016/s1364-6826(97)00131-4.

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11

Smirnov, A. Yu. "Matter Effects in Neutrino Propagation." International Astronomical Union Colloquium 121 (1990): 231–50. http://dx.doi.org/10.1017/s025292110006797x.

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AbstractConditions and dynamics of the resonant neutrino conversion are described. We discuss the applications of the effect to the solar neutrinos as well as present status of the conversion inside the Sun. The influence of different matter density perturbations on the conversion is considered, and in this connection the possible effects of parametric and stochastic enhancement of the influence are remarked.

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12

Sazonov, S. V. "Diffraction effects on soliton propagation." Journal of Experimental and Theoretical Physics 98, no. 6 (June 2004): 1237–49. http://dx.doi.org/10.1134/1.1777637.

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13

Tartar, Luc. "H-measures and propagation effects." Rendiconti Lincei - Matematica e Applicazioni 28, no. 4 (November 15, 2017): 701–28. http://dx.doi.org/10.4171/rlm/782.

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14

Chen, Xiaowei, Xuebin Li, Gang Sun, Qing Liu, Wenyue Zhu, and Ningquan Weng. "Effects of intermittency and stratification on the evaluation of optical propagation." Chinese Optics Letters 15, no. 8 (2017): 080108. http://dx.doi.org/10.3788/col201715.080108.

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Xiaowei Chen, Xiaowei Chen, Xuebin Li Xuebin Li, Gang Sun Gang Sun, Qing Liu Qing Liu, Wenyue Zhu Wenyue Zhu, and Ningquan Weng Ningquan Weng. "Effects of intermittency and stratification on the evaluation of optical propagation." Chinese Optics Letters 15, no. 8 (2017): 080101. http://dx.doi.org/10.3788/col201715.080101.

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16

Huang, Wanxia, Yabo Zhang, Yuan Pei, Maosheng Wang, Fenghua Shi, and Kuanguo Li. "Effects of propagation phase on the coupling of plasmonic optical modes." Chinese Optics Letters 21, no. 1 (2023): 010003. http://dx.doi.org/10.3788/col202321.010003.

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17

McNair, Mason, Amanda Wilkins, and Dennis Werner. "Wounding and chemical treatment effects on Drosera capensis bud formation on leaf cuttings." Carnivorous Plant Newsletter 41, no. 4 (December 1, 2012): 140–42. http://dx.doi.org/10.55360/cpn414.mm785.

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Drosera capensis L. (Droseraceae) is one of the most commonly grown carnivorous plants prized for its ease of culture and rapid growth. In cultivation, seed is preferred for propagating this species; however, in the case of cultivar propagation, asexual propagation must be used. D. capensis readily propagates from both leaf and root cuttings. Leaf cuttings can be used to asexually propagate D. capensis. Wounding and exogenous hormone applications are commonly used in herbaceous and woody plant asexual propagation to enhance adventitious root and shoot formation. The purpose of this study was to investigate the effect of wounding and exogenous hormone application (auxin and cytokinin) on adventitious shoot formation on leaf cuttings of D. capensis.

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18

Robinson, P. A. "Thermal effects on parallel-propagating electron cyclotron waves." Journal of Plasma Physics 37, no. 1 (February 1987): 149–62. http://dx.doi.org/10.1017/s0022377800012058.

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Thermal effects on the dispersion of right-handed (RH) electron cyclotron waves propagating parallel to a uniform, ambient magnetic field are investigated in the strictly non-relativistic (‘classical’) and weakly relativistic approximations for real frequency and complex wave vector. In each approximation, the two branches of the RH mode reconnect near the cyclotron frequency as the plasma temperature is increased or the density is lowered. This reconnection occurs in a manner different from that previously assumed at parallel propagation and from that at perpendicular propagation, giving rise to a new mode near the cold plasma cut-off frequency ωxC. For both parallel and perpendicular propagation, it is noted that reconnection occurs approximately when the cyclotron line-width equals the width of the stop-band in the cold plasma dispersion relation. Inclusion of weakly relativistic effects is found to be necessary for quantitative calculations and for an accurate treatment of the new mode near ωxC. Weakly relativistic effects also modify the analytic properties of the dispersion relation so as to introduce a new family of weakly damped and undamped solutions.

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19

Stout, Trevor A., and Victor W. Sparrow. "Atmospheric turbulence effects on shaped and unshaped sonic boom signatures." Journal of the Acoustical Society of America 151, no. 5 (May 2022): 3280–90. http://dx.doi.org/10.1121/10.0011393.

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Atmospheric turbulence is known to randomly distort the “N-wave” sonic boom signature emitted by conventional, unshaped supersonic aircraft. To predict the effect of turbulence on the signature from shaped aircraft, a numerical model has been developed based on the nonlinear Khokhlov–Zabolotskaya–Kuznetzov (KZK) propagation equation coupled with an approximate atmospheric turbulence model. The effects of turbulence on an archetypal N-wave and a shaped signature are compared via a series of numerical experiments propagating the signatures through multiple random realizations of turbulence in varying atmospheric and propagation conditions. The simulated results generally show that the variance of the Stevens Mark VII perceived level metric related to loudness is decreased by boom shaping and that the shocks in the shaped signature are less distorted than for the N-wave. Additionally, the probabilities of high-level and high-amplitude signatures are decreased for the shaped signature. Thus, the model predicts that boom shaping results in a signature with more consistent loudness and amplitude after propagation through turbulence.

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20

Tabak, Gizem, Michael L. Oelze, and Andrew C. Singer. "Effects of acoustic nonlinearity on communication performance in soft tissues." Journal of the Acoustical Society of America 152, no. 6 (December 2022): 3583–94. http://dx.doi.org/10.1121/10.0015402.

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Acoustic communication has been gaining traction as an alternative communication method in nontraditional media, such as underwater or through tissue. Acoustic propagation is known to be a nonlinear phenomenon; nonlinear propagation of acoustic waves in soft tissues at biomedical frequencies and intensities has been widely demonstrated. However, the effects of acoustic nonlinearity on communication performance in biological tissues have not yet been examined. In this work, nonlinear propagation of a communication signal in soft tissues is analyzed. The relationship between communication parameters (signal amplitude, bandwidth, and center frequency) and nonlinear distortion of the communication signal propagating in soft tissues with different acoustic properties is investigated. Simulated experiments revealed that, unlike linear channels, bit error rates increase as signal amplitude and bandwidth increase. Linear and decision feedback equalizers fail to address the increased error rates. When tissue properties and transmission parameters can be estimated, receivers based on maximum likelihood sequence estimation approach the performance of an ideal receiver in an ideal additive white Gaussian noise channel.

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21

Wang, Fazhi, Wenhe Du, Qi Yuan, Daosen Liu, and Shuang Feng. "A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects." Atmosphere 12, no. 12 (December 2, 2021): 1608. http://dx.doi.org/10.3390/atmos12121608.

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The Earth’s atmosphere is the living environment in which we live and cannot escape. Atmospheric turbulence is a typical random inhomogeneous medium, which causes random fluctuations of both the amplitude and phase of optical wave propagating through it. Currently, it is widely accepted that there exists two kinds of turbulence in the aerosphere: one is Kolmogorov turbulence, and the other is non-Kolmogorov turbulence, which have been confirmed by both increasing experimental evidence and theoretical investigations. The results of atmospheric measurements have shown that the structure of atmospheric turbulence in the Earth’s atmosphere is composed of Kolmogorov turbulence at lower levels and non-Kolmogorov turbulence at higher levels. Since the time of Newton, people began to study optical wave propagation in atmospheric turbulence. In the early stage, optical wave propagation in Kolmogorov atmospheric turbulence was mainly studied and then optical wave propagation in non-Kolmogorov atmospheric turbulence was also studied. After more than half a century of efforts, the study of optical wave propagation in atmospheric turbulence has made great progress, and the theoretical results are also used to guide practical applications. On this basis, we summarize the development status and latest progress of propagation theory in atmospheric turbulence, mainly including propagation theory in conventional Kolmogorov turbulence and one in non-Kolmogorov atmospheric turbulence. In addition, the combined influence of Kolmogorov and non-Kolmogorov turbulence in Earth’s atmosphere on optical wave propagation is also summarized. This timely summary is very necessary and is of great significance for various applications and development in the aerospace field, where the Earth’s atmosphere is one part of many links.

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22

Zhang, Hui, Chuwen Guo, and Jie Lin. "Effects of Velocity Profiles on Measuring Accuracy of Transit-Time Ultrasonic Flowmeter." Applied Sciences 9, no. 8 (April 20, 2019): 1648. http://dx.doi.org/10.3390/app9081648.

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Ultrasonic wave carries the information for flowing velocity when it is propagating in flowing fluids. Flowrate can be obtained by measuring the propagation time of ultrasonic wave. The principle of transit-time ultrasonic flowmeters used today was based on that the velocity is uniform along the propagation path of the ultrasonic wave. However, it is well known that the velocity profiles in a pipe are not uniform both in laminar flow and turbulent flow. Emphasis on the effects of velocity profiles across the pipe on the propagation time of ultrasonic wave, theoretical flowrate correction factors considering the real velocity profile were proposed for laminar and turbulent flow to obtain higher accuracy. Experiment data of ultrasonic flowmeter and weighting method are compared to verify the proposed theoretical correction factors. The average relative error of proposed correction factor is determined to be 0.976% for laminar flow and 0.25% for turbulent flow.

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23

Gholam Reza, Goodarzi, Noor Vahide Payam, and Ahmadloo Fatemeh. "Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed." Journal of Forest Science 63, No. 9 (September 21, 2017): 408–16. http://dx.doi.org/10.17221/18/2017-jfs.

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We examined the effects of nanoparticles (NPs) of TiO2 and ZnO at 0.5, 1, 2 or 3% concentrations for 10, 20, and 30 min in stratified seeds of Prunus mahaleb Linnaeus. Then, seedlings produced were irrigated to field capacity with NP solutions at control, 1, 5, and 10% concentration for 7 months in the greenhouse conditions. Treating seeds at 1% concentrations of TiO2-NPs for 20 min resulted in the highest germination percentage (65%) and at concentrations of 3% for 30 min it showed the lowest germination percentage (13%). The highest total seedling height was obtained after exposure of seeds to 0.5% TiO2-NPs for 10 min. Irrigation of seedlings with TiO2-NPs at the concentration of 1% seems to be a suitable method how to increase their total height, survival, and total dry weight. A decrease in the relative water content and an increase in proline were observed in response to the application of high levels of NPs.

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Ben-Shimol, Y., N. Blaunstein, and M. Sergeev. "DEPOLARIZATION EFFECTS OF RADIO WAVE PROPAGATION IN VARIOUS LAND BUILT–UP ENVIRONMENTS." Informatsionno-upravliaiushchie sistemy (Information and Control Systems) 74, no. 1 (February 2015): 68–76. http://dx.doi.org/10.15217/issn1684-8853.2015.1.68.

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25

Ziemann, Astrid, Arthur Schady, and Dietrich Heimann. "Meteorological effects on the 3D sound propagation inside an inhomogeneous forest area." Meteorologische Zeitschrift 25, no. 3 (June 20, 2016): 327–39. http://dx.doi.org/10.1127/metz/2016/0710.

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Jiang, Ping, Kang Xie, Huajun Yang, and Zhenhai Wu. "Negative Propagation Effects in Two-Dimensional Silicon Photonic Crystals." International Journal of Photoenergy 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/702637.

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We demonstrated negative refraction effects of light propagating in two-dimensional square and hexagonal-lattice silicon photonic crystals (PhCs). The plane wave expansion method was used to solve the complex eigenvalue problems, as well as to find dispersion curves and equal-frequency contour (EFC). The finite-difference time-domain (FDTD) method was used to simulate and visualize electromagnetic wave propagation and scattering in the PhCs. Theoretical analyses and numerical simulations are presented. Two different kinds of negative refractions, namely, all-angle negative refraction (AANR) without a negative index and negative refraction with effective negative index, have been verified and compared.

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KITAGAWA, Toshiaki, Tomomi OGAWA, and Yukihide NAGANO. "The Effects of Pressure on Unstretched Laminar Burning Velocity, Markstein Length and Cellularity of Spherically Propagating Laminar Flames(S.I. Engines, Flame Propagation)." Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2004.6 (2004): 575–82. http://dx.doi.org/10.1299/jmsesdm.2004.6.575.

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Engelbrecht, Jüri, Arvi Ravasoo, and Jaan Janno. "Nonlinear Acoustic NDE – Qualitative and Quantitative Effects." Advanced Materials Research 47-50 (June 2008): 17–20. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.17.

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The recent results in constructing the mathematical basis of nonlinear acoustic techniques for NDE of inhomogeneous materials are discussed. These include microstructural materials and materials with weakly or strongly changing properties of specimens (structural elements) under inhomogeneous prestress. The idea is to extract additional information from nonlinear and dispersive effects of wave propagation. Novel concepts are introduced: (i) the analysis of dispersive effects; (ii) the analysis of two counter-propagating nonlinear waves.

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Zheng, Lei, Lichuan Jin, Tianlong Wen, Yulong Liao, Xiaoli Tang, Huaiwu Zhang, and Zhiyong Zhong. "Spin wave propagation in uniform waveguide: effects, modulation and its application." Journal of Physics D: Applied Physics 55, no. 26 (March 1, 2022): 263002. http://dx.doi.org/10.1088/1361-6463/ac4b58.

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Abstract Magnonics, or spin waves, are one of the most promising candidate technologies for information processing beyond complementary metal oxide semiconductors. Information encoded by spin waves, which uses the frequency, amplitude and/or phase to encode information, has a great many advantages such as extremely low energy loss and wideband frequency. Moreover, the nonlinear characteristics of spin waves can enhance the extra degrees of processing freedom for information. A typical spin wave device consists of a spin wave source (transmitter), spin wave waveguide and spin wave detector. The spin wave waveguide plays an important role of propagating and modulating the spin wave to fulfill the device’s function. This review provides a tutorial overview of the various effects of coherent spin wave propagation and recent research progress on a uniform spin wave waveguide. Furthermore, we summarize the methods of modulating propagation of a spin wave in a uniform waveguide, and analyze the experimental and calculated results of the spin wave propagation profile and dispersion curve under different modulation methods. This review may promote the development of information transmission technology based on spin waves.

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30

Lipovsky, Bradley Paul. "Ice shelf rift propagation: stability, three-dimensional effects, and the role of marginal weakening." Cryosphere 14, no. 5 (May 27, 2020): 1673–83. http://dx.doi.org/10.5194/tc-14-1673-2020.

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Abstract. Understanding the processes that govern ice shelf extent is important to improving estimates of future sea-level rise. In present-day Antarctica, ice shelf extent is most commonly determined by the propagation of through-cutting fractures called ice shelf rifts. Here, I present the first three-dimensional analysis of ice shelf rift propagation. I model rifts using the assumptions of linear elastic fracture mechanics (LEFM). The model predicts that rifts may be stabilized (i.e., stop propagating) when buoyant flexure results in the partial contact of rift walls. This stabilizing tendency may be overcome, however, by processes that act in the ice shelf margins. In particular, loss of marginal strength, modeled as a transition from zero tangential displacement to zero tangential shear stress, is shown to favor rift propagation. Rift propagation may also be triggered if a rift is carried with the ice flow (i.e., advected) out of an embayment and into a floating ice tongue. I show that rift stability is closely related to the transition from uniaxial to biaxial extension known as the compressive arch. Although the partial contact of rift walls is fundamentally a three-dimensional process, I demonstrate that it may be parameterized within more numerically efficient two-dimensional calculations. This study constitutes a step towards a first-principle description of iceberg calving due to ice shelf rift propagation.

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Mottay, E., C. N. Man, E. Durand, and E. Audouard. "Propagation effects in variable-reflectivity resonators." Optics Letters 17, no. 13 (July 1, 1992): 905. http://dx.doi.org/10.1364/ol.17.000905.

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Luo, Qinghuan. "Propagation Effects on Pulsar Radio Emission." Publications of the Astronomical Society of Australia 18, no. 4 (2001): 400–406. http://dx.doi.org/10.1071/as01050.

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AbstractPropagation effects on radio emission within the pulsar magnetosphere are discussed. Widely accepted pulsar models assume that a pulsar magnetosphere is populated with relativistic pair plasmas produced through electron–positron cascades by accelerated primary particles above the polar cap. Any radio emission produced well inside the light cylinder (the radius at which the rotation speed equals c) must propagate through the magnetospheric plasma and be subject to plasma dispersion effects such as refraction and absorption. The observed pulse profiles should contain some features that reflect the influence of the intervening plasma. I discuss particularly the absorption effect due to cyclotron resonance and its possible observational consequences.

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Wait, J. R. "Propagation effects for electromagnetic pulse transmission." Proceedings of the IEEE 74, no. 9 (1986): 1173–81. http://dx.doi.org/10.1109/proc.1986.13610.

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Cordes, James. "Optimizing Pulsar Searches Against Propagation Effects." International Astronomical Union Colloquium 182 (2001): 47–52. http://dx.doi.org/10.1017/s0252921100000671.

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AbstractPropagation effects are well known to limit the sensitivity of pulsar searches based on periodicity detections. I define several regimes for pulsar searches that are based on whether the search sensitivity is luminosity limited, dispersion limited or scattering limited. Consideration of these regimes allows general statements to be made about pulsar searches in and out of the Galactic plane. Telescope size matters, but only to a point. Once scattering becomes important it is better to search more sky (in a blind survey) than to integrate longer on a given sky position. Example surveys are described.

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Albert, Donald G. "Terrain effects on acoustic pulse propagation." Journal of the Acoustical Society of America 115, no. 5 (May 2004): 2595. http://dx.doi.org/10.1121/1.4784474.

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Albert, Donald G., Frank E. Perron, and Stephen N. Decato. "Forest effects on acoustic pulse propagation." Journal of the Acoustical Society of America 116, no. 4 (October 2004): 2517. http://dx.doi.org/10.1121/1.4785042.

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Deffuant, Guillaume, and Sylvie Huet. "Propagation effects of filtering incongruent information." Journal of Business Research 60, no. 8 (August 2007): 816–25. http://dx.doi.org/10.1016/j.jbusres.2007.02.001.

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Wolf, C. "dispersive effects in scalar-electromagnetic propagation." Physics Letters A 132, no. 4 (October 1988): 151–53. http://dx.doi.org/10.1016/0375-9601(88)90271-x.

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KUHN, M. J. "EVANESCENT EFFECTS IN ACOUSTICAL WAVE PROPAGATION*." Geophysical Prospecting 35, no. 2 (February 1987): 167–86. http://dx.doi.org/10.1111/j.1365-2478.1987.tb00811.x.

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Lin, Joyce, and James P. Keener. "Microdomain Effects on Transverse Cardiac Propagation." Biophysical Journal 106, no. 4 (February 2014): 925–31. http://dx.doi.org/10.1016/j.bpj.2013.11.1117.

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Kumar, Raghuvir, Arbind Kumar, and Sunil Kumar. "Delay effects in fatigue crack propagation." International Journal of Pressure Vessels and Piping 67, no. 1 (June 1996): 1–5. http://dx.doi.org/10.1016/0308-0161(94)00008-5.

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Hartl, Ph, F. Heel, W. Keydel, and H. Kietzmann. "Radar calibration techniques including propagation effects." Advances in Space Research 7, no. 11 (January 1987): 259–68. http://dx.doi.org/10.1016/0273-1177(87)90322-x.

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Shcherbakov, Roman V. "Propagation Effects in Magnetized Transrelativistic Plasmas." Astrophysical Journal 688, no. 1 (November 20, 2008): 695–700. http://dx.doi.org/10.1086/592326.

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Maxwell, S. C., and R. P. Young. "Propagation effects of an underground excavation." Tectonophysics 289, no. 1-3 (April 1998): 17–30. http://dx.doi.org/10.1016/s0040-1951(97)00304-1.

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Overgoor, Jan, Ellery Wulczyn, and Christopher Potts. "Trust Propagation with Mixed-Effects Models." Proceedings of the International AAAI Conference on Web and Social Media 6, no. 1 (August 3, 2021): 535–38. http://dx.doi.org/10.1609/icwsm.v6i1.14308.

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Web-based social networks typically use public trust systems to facilitate interactions between strangers. These systems can be corrupted by misleading information spread under the cover of anonymity, or exhibit a strong bias towards positive feedback, originating from the fear of reciprocity. Trust propagation algorithms seek to overcome these shortcomings by inferring trust ratings between strangers from trust ratings between acquaintances and the structure of the network that connects them. We investigate a trust propagation algorithm that is based on user triads where the trust one user has in another is predicted based on an intermediary user. The propagation function can be applied iteratively to propagate trust along paths between a source user and a target user. We evaluate this approach using the trust network of the CouchSurfing community, which consists of 7.6M trust-valued edges between 1.1M users. We show that our model out-performs one that relies only on the trustworthiness of the target user (a kind of public trust system). In addition, we show that performance is significantly improved by bringing in user-level variability using mixed-effects regression models.

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Ren, Zhi-Yuan, Xi Zhao, and Hua Liu. "Dispersion Effects on Tsunami Propagation in South China Sea." Journal of Earthquake and Tsunami 09, no. 05 (December 2015): 1540001. http://dx.doi.org/10.1142/s1793431115400011.

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As the Manila Trench is becoming the most tsunami-hazardous, it is necessary to ascertain the wave height and arrival time in the South China Sea region through numerical simulation of tsunamis generated from potential earthquake source along the Manila subduction zone. The Okada model is employed to generate tsunami. The surface elevation and depth-averaged horizontal velocity at first 5 min, coming from the simulation of shallow water equations, are then interpolated in the weakly dispersive model (FUNWAVE) to calculate tsunami propagation and far-field impact. The characteristics of tsunami wave height distribution in South China Sea are analyzed for the assessment of tsunami hazard near coasts around South China Sea due to the hypothetical earthquakes with magnitude of [Formula: see text] and the worst case scenario ([Formula: see text]). The maximum wave height distribution computed by the Boussinesq equations is compared with that by the shallow water equations to investigate the dispersion effects on propagation of tsunami in South China Sea. It is found that the dispersion effects of the tsunami waves propagating in South China Sea are not significant if the earthquake magnitude is large enough.

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Tao, Chen, and Wang Ligang. "Effects of the lateral propagating disturbance on wave propagation in periodic beams." Journal of Physics: Conference Series 448 (July 24, 2013): 012012. http://dx.doi.org/10.1088/1742-6596/448/1/012012.

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LaBelle, J. "High-latitude propagation studies using a meridional chain of LF/MF/HF receivers." Annales Geophysicae 22, no. 5 (April 8, 2004): 1705–18. http://dx.doi.org/10.5194/angeo-22-1705-2004.

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Abstract. For over a decade, Dartmouth College has operated programmable radio receivers at multiple high-latitude sites covering the frequency range 100-5000kHz with about a 1-s resolution. Besides detecting radio emissions of auroral origin, these receivers record characteristics of the ionospheric propagation of natural and man-made signals, documenting well-known effects, such as the diurnal variation in the propagation characteristics of short and long waves, and also revealing more subtle effects. For example, at auroral zone sites in equinoctial conditions, the amplitudes of distant transmissions on MF/HF frequencies are often enhanced by a few dB just before they fade away at dawn. The polarization and/or direction of the arrival of ionospherically propagating signals in the lower HF range (3-5MHz) show a consistent variation between pre-midnight, post-midnight, and pre-dawn conditions. As is well known, magnetic storms and substorms dramatically affect ionospheric propagation; data from multiple stations spanning the invariant latitude range 67-79° reveal spatial patterns of propagation characteristics associated with magnetic storms and substorms. For example, in the hours preceding many isolated substorms, favorable propagation conditions occur at progressively lower latitudes as a function of time preceding the substorm onset. For some of these effects, explanations follow readily from elementary ionospheric physics, but understanding others requires further investigation.Key words. Magnetospheric physics (annual phenomena) – Radio science (ionosphere propagation; radio-wave propagation)6

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A. A. Elsheikh, Elfatih, Islam Md. Rafiqul, Mohamad Hadi Habaebi, Ahmad F. Ismail, Z. E. O. Elshaikh, F. M. Suliman, and Jalel Chebil. "Analysis of airborne dust effects on terrestrialmicrowave propagation in arid area." Bulletin of Electrical Engineering and Informatics 8, no. 3 (September 1, 2019): 1014–21. http://dx.doi.org/10.11591/eei.v8i3.1528.

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Sand and dust storms are environmental phenomena ,during these storms optical visibility might be decreased, consequently, atmospheric attenuation is clearly noticed.Micro-wave (MW) and Milimeter-wave (mm) propagation is severely affected by dust and sand storms in considerable areas around the world. Suspended dust particles may directly cause attenuation and cross polarization to the Electromagnetic waves propagating through the storm. In this paper, a thorough investigation of dust storm characteristics based onmeasured optical visibility and relative humidity is presented. In addition,the dust storms effects of on Micro-wave and Millimeter-wave propagation have been studied based on data measured Received Signal levels (RSL)and dust storm characteristics synchronously. Analyticaldustattenuationmodels predictions are matched to the measured attenuationdata at 14 GHz and 21 GHz. It has been found that the measured attenuation is approximately ten times higher than the predicted attenuation for both frequencies.

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Kozelkov, Andrey, Elena Tyatyushkina, Vadim Kurulin, and Andrey Kurkin. "Influence of Turbulence Effects on the Runup of Tsunami Waves on the Shore within the Framework of the Navier–Stokes Equations." Fluids 7, no. 3 (March 20, 2022): 117. http://dx.doi.org/10.3390/fluids7030117.

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This paper considers turbulence effects on tsunami runup on the shore in tsunami simulations using the system of three-dimensional Navier–Stokes equations. The turbulence effects in tsunami propagation and runup are studied by solving the problem of a wave propagating in a nonuniform-bottom pool and collapsing with a barrier. To solve this problem, we used the turbulence model, RANS SST (Reynolds-averaged Navier–Stokes shear stress transport). We compared the wave profiles at different times during wave propagation, runup, and collapse. To quantify the turbulence effects, we also compared the forces acting on the basin bottom. We demonstrated that the turbulence had almost no effect on the shape of the wave and the way of its propagation (except collapse). However, turbulence effects during the runup and collapse became noticeable and could boost the flow (increasing the pressure force and the total force) by up to 25 percent.

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Journal articles on the topic 'Propagation effects'

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