Academic literature on the topic 'Circular caustic'

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Journal articles on the topic "Circular caustic"

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Leftheris, B. P., and J. M. Papazian. "Use of the Shadow Optical Method of Caustics to Predict Fatigue Crack Growth in Compression." Journal of Engineering Materials and Technology 114, no. 4 (1992): 399–405. http://dx.doi.org/10.1115/1.2904191.

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The shadow optical method of caustics has been applied to the measurement of the bulging out of the surface of aluminum alloy 7075-T6 in the vicinity of a blunt notch in a single edge notch tensile sample after a compression overload and during compression fatigue. The size and shape of the caustic were found to be sensitive functions of the amount of elastic and plastic strain in the vicinity of the notch. Examination of the caustic during application and after release of the overload shows the elastic zone to be larger and more circular than the plastic zone, as predicted. A crack was propag
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Alexandrov, A., V. Zhdanov, and A. Kuybarov. "Gravitational microlensing of an elliptical source near a fold caustic." Bulletin of Taras Shevchenko National University of Kyiv. Astronomy, no. 57 (2018): 10–15. http://dx.doi.org/10.17721/btsnua.2018.57.10-15.

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We consider the amplification factor for the luminosity of an extended source near the fold caustic of the gravitational lens. It is assumed that the source has elliptical shape, and the brightness distribution along the radial directions is Gaussian. During the microlensing event the total brightness of all microimages is observed, which changes when the source moves relative to the caustic. The main contribution to the variable component is given by the so-called critical images that arise/disappear at the intersection of the caustic by the source. In the present paper we obtained an analogo
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Rahim, Tariq, and Jia Dong Xu. "High Frequency Fields of the PEMC Elliptical Reflector Placed in Chiral Medium Using Maslov’s Method." International Journal of Engineering Research in Africa 25 (August 2016): 70–77. http://dx.doi.org/10.4028/www.scientific.net/jera.25.70.

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The high frequency field expressions are analyzed for perfect electromagnetic conducting (PEMC) elliptical reflector embedded in isotropic, homogeneous and reciprocal chiral medium. Geometric optics (GO) method is used to find the caustic region field for the PEMC elliptical reflector. However, GO fields are not valid around the caustic region due to the occurrence of un-realistic singularity around the caustic region. Therefore, Maslov’s method is used to derive the high frequency fields which are also valid in the vicinity of the caustic region. The effect of admittanceM of the PEMC boundary
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Chibishev, Andon, Natasha Simonovska-Veljanovska, and Zanina Pereska. "Artificial Nutrition in Therapeutic Approach of Acute Caustic Poisonings." Macedonian Journal of Medical Sciences 3, no. 2 (2017): 180. http://dx.doi.org/10.3889/mjms.1857-5773.2010.0102.

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Acutes corrosive poisonings can cause serious chemical injuries of the upper gastrointestinal tract, and they are localized most frequently in the esophagus and the stomach because the poison remains there a long time. Treatment of the acute corrosive intoxications include: neutralization of corrosive agents, antibiotics, corticosteroids, anti-secretory therapy, nutritional support, collagen synthesis inhibitors, esophageal dilation and stent placement, and surgery.The damaged mucosa, submucosa and muscle layer regenerate with great difficulty because of the surrounding inflammation, necrosis
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Marchant, T. R., and A. J. Roberts. "A variational approach to the problem of deep-water waves forming a circular caustic." Journal of Fluid Mechanics 194, no. -1 (1988): 581. http://dx.doi.org/10.1017/s002211208800312x.

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ALMALEH, Ahmad, Yutaka SAWAKI, and Kiyoshi ISOGIMI. "OS01W0077 Fundamental study of caustic experimental method in thermal stress analysis : Investigation for one or two dimensional stress field in circular disk." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS01W0077. http://dx.doi.org/10.1299/jsmeatem.2003.2._os01w0077.

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Marciano-Melchor, Magdalena, Enrique Montiel-Piña, Edwin Román-Hernández, et al. "Wavefronts, light rays and caustic of a circular wave reflected by an arbitrary smooth curve." Journal of Optics 13, no. 5 (2011): 055705. http://dx.doi.org/10.1088/2040-8978/13/5/055705.

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Appleby, J. C., and D. G. Crighton. "Internal gravity waves generated by oscillations of a sphere." Journal of Fluid Mechanics 183 (October 1987): 439–50. http://dx.doi.org/10.1017/s0022112087002714.

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We consider the radiation of internal gravity waves from a spherical body oscillating vertically in a stratified incompressible fluid. A near-field solution (under the Boussinesq approximation) is obtained by separation of variables in an elliptic problem, followed by analytic continuation to the frequencies ω < N of internal wave radiation. Matched expansions are used to relate this solution to a far-field solution in which non-Boussinesq terms are retained. In the outer near field there are parallel conical wavefronts between characteristic cones tangent to the body, but with a wavelength
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Nye, J. F. "Dislocation lines in the hyperbolic umbilic diffraction catastrophe." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 462, no. 2072 (2006): 2299–313. http://dx.doi.org/10.1098/rspa.2006.1683.

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The three-dimensional pattern of the hyperbolic umbilic diffraction catastrophe is computed from an integral representation. A detailed description is given of the geometrical arrangement of the wave dislocation lines (optical vortices) on which the diffraction pattern is based. From a crossed grid of nodal lines in the focal plane, two bundles of dislocation lines spring out symmetrically into the regions of 4-wave interference. Each dislocation line then follows a chain of curved segments which approximate successive steps along lattice vectors in the space group Fmmm . The result is a bundl
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Almaleh, Ahmad, Yutaka Sawaki, and Kiyoshi Isogimi. "OS1(4)-18(OS01W0077) Fundamental Study of Caustic Experimental Method in Thermal Stress Analysis : Investigation for One or Two Dimensional Stress Field in Circular Disk." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003 (2003): 148. http://dx.doi.org/10.1299/jsmeatem.2003.148.

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Dissertations / Theses on the topic "Circular caustic"

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Lawry, James Milson Hassall. "Complex ray theory." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389022.

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Books on the topic "Circular caustic"

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Baloh, Robert W. Bárány’s Formative Years and the Conflict in Politzer’s Clinic. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190600129.003.0009.

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When Robert Bárány published his book on the physiology and pathology of the vestibular system in 1907, he did not mention his collaboration with Gustav Alexander or any of Alexander’s work. After writing the book in a few weeks apparently because of concerns that others might publish findings first, Bárány had Adam Politzer write the introduction but he did not show it to Alexander until after he had sent it to the publisher. Alexander reacted angrily, claiming that Bárány left out many important references in his book and had failed to give credit to Alexander for his contributions to the ov
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Book chapters on the topic "Circular caustic"

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Gao, Guiyun, Jie Zhou, and Zheng Li. "Dynamic Fracture Analysis of Semi-circular Bending (SCB) Specimen by the Optical Method of Caustics." In Dynamic Behavior of Materials, Volume 1. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00771-7_20.

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Conference papers on the topic "Circular caustic"

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Chen, Rui-Pin, Li-Xing Zhong, and Huiwen Zhu. "The linear-circular polarization transfer in a caustic vector optical field." In 2016 Progress in Electromagnetic Research Symposium (PIERS). IEEE, 2016. http://dx.doi.org/10.1109/piers.2016.7734704.

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Mathis, A., F. Courvoisier, L. Froehly, et al. "Nonparaxial circular and weber beams from caustics." In 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC. IEEE, 2013. http://dx.doi.org/10.1109/cleoe-iqec.2013.6801530.

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