Results 31 to 40 of about 18,681 (274)

Caustic consideration of long planetary wave packet analysis in the continuously stratified ocean

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The wave packet method, one form of the WKB technique, recently has been employed to investigate the evolution of long planetary wave packets in relation to the complex climate variability in the world oceans.
Arthur D. Gorman, Huijun Yang
doaj   +1 more source

The caustics method in the contact problems of anisotropic materials

open access: yesEPJ Web of Conferences, 2010
Regions with high stress gradients represent critical zones of engineering structures such as crack tip or vicinity of the contact zone. The optical method of caustics is one of the few experimental methods which provide applicable results in these ...
Jecić S., Semenski D., Bakić A.
doaj   +1 more source

Generation of Caustics and Spatial Rogue Waves from Nonlinear Instability [PDF]

open access: yes, 2017
Caustics are natural phenomena in which nature concentrates the energy of waves. Although, they are known mostly in optics, caustics are intrinsic to all wave phenomena.
Boyd, Robert W.   +3 more
core   +2 more sources

Caustic ingestion in children: A 6-year retrospective study

open access: yesEmergency Care Journal, 2020
Some aspects of the management of caustic ingestion in children are still debated. We aimed to determine the predictive value of epidemiological and clinical features of caustic ingestion, and to define guidelines adherence. This is a retrospective study
Cristina Lovera   +4 more
doaj   +1 more source

Degree and class of caustics by reflection for a generic source [PDF]

open access: yes, 2013
We are interested in the study of caustics by reflection of irreducible algebraic planar curves (in the complex projective plane). We prove the birationality of the caustic map (for a generic light position).
Josse, Alfrederic, Pene, Francoise
core   +5 more sources

Study on dynamic crack initiation and propagation behavior of surrounding rock of adjacent roadway

open access: yes矿业科学学报, 2021
In order to study the mechanical behavior characteristics of dynamic crack initiation and propagation of surrounding rock of adjacent roadway under impact load, with the help of a new digital laser dynamic caustics experimental system, a rock-like medium
Yang Liyun   +5 more
doaj   +1 more source

Catastrophe theory and caustics of radially symmetric beams [PDF]

open access: yesКомпьютерная оптика, 2019
The work is devoted to the study of the caustics of radial beams. Analytical expressions for caustic surfaces of wave fronts created by radially symmetric diffractive optical elements are found.
Sergey Kharitonov   +2 more
doaj   +1 more source

Caustics experimental study on the interaction between moving cracks and voids under impact loading

open access: yes矿业科学学报, 2022
In order to study the fracture characteristics of semi-disc specimens with circular defects under different impact speeds, Hopkinson rod is used to dynamically load the semi-disc specimen, and the fracture process of the semi-disc specimen is observed by
Luo Haohao   +4 more
doaj   +1 more source

Caustic design in periodic lattices [PDF]

open access: yes, 2012
We study curved trajectory dynamics and design in discrete array settings. We find that beams with power law phases produce curved caustics associated with the fold and cusp type catastrophes.
Chremmos, Ioannis   +1 more
core   +2 more sources

Anomalous caustics and Veselago focusing in 8-Pmmn borophene p–n junctions with arbitrary junction directions

open access: yesNew Journal of Physics, 2019
Negative refraction usually demands complex structure engineering while it is very natural for massless Dirac fermions (MDFs) across the p–n junction (PNJ), this leads to Dirac electron optics.
Shu-Hui Zhang, Wen Yang
doaj   +1 more source

Home - About - Disclaimer - Privacy