Guan-Lin Yeh, horn

Camille Saint-SaensChristoph ForsterJohann Sebastian Bach, trans. Wendell HossWolfgang Amadeus Mozar

Fiber distributed feedback laser

Utilizing round optical fibers as communication channels in optical communication networks presents the problem of obtaining a high efficiency coupling between the optical fiber and the laser. A laser is made an integral part of the optical fiber channel by either diffusing active material into the optical fiber or surrounding the optical fiber with the active material. Oscillation within the active medium to produce lasing action is established by grating the optical fiber so that distributed feedback occurs

Self and belonging in movement

Christine Yeh writes about displacement and new identities created through movement in There There by Tommy Orange

Morfometry Diversity of Uceng Fish (Nemacheilus fasciatus) With Truss Method In Downstream of Yeh Sungi River

This study aims to determine the morphometric diversity of uceng fish that live in the downstream of the yeh sungi river and the environmental influence on the morphometry of the uceng fish that lives in the lower reaches of the yeh sungi river. This research was carried out in the Lower Sections of the Yeh Sungi River, Kediri District, Tabanan Regency, Bali Province. This research began on January 3 to April 17, 2019. The research method used was descriptive observation method by holding a series of sampling objects under study or data objects directly at the research location, in this study the intended data objects were uceng fish and types other fish caught as well as water quality. Uceng fish was measured by the truss method and the characters observed were 13 characters, namely A1, A2, A3, B1, B2, B3, B4, B5, C1, C2, C3, C4, and C5. The results of the study showed that the morphometry characters of Uceng fish (Nemacheilus fasciatus) that live in the lower reaches of the Yeh Sungi river were 13 characters observed at the Stasion I, Station II, and Station III, from the characters observed 5 characters had similarities (38.46% ) that is on the characters A1, B1, B2, B4, and B5, while 8 characters have differences (61.54%), namely the characters A2, A3, B3, C1, C2, C3, C4, and C5. The high difference shows that uceng fish in the downstream of the Yeh Sungi river are resistant to environmental changes, other fish caught include broom fish, beboso fish, wader fish, catfish, gouramy fish, klepek batu, and cork fish and range water quality parameters during the study were temperature 25 0C, pH 5-7, DO 6 ppm, NO3 - 0.5 mg / l, and KH 6-10 dH

Peg

Yeh- it\u27s really the berries-some people\u27s names, I mean. I knew a girl once name of Nacy Longnecker..

Laser action generated within a light pipe: A concept

Laser light could be generated within light pipe itself, thereby eliminating coupling losses. Theoretical calculations have shown feasibility of light-pipe laser propagating in circularly-polarized TE mode. It is predicted that fiber-optic distributed-feedback laser would have gain on order of 25 dB

Higher order dispersion in the propagation of a gravity wave packet

To the first order of approximation, the complex amplitude of a wave packet in an anisotropic and dispersive medium is convected with the group of velocity. However, a gravity wave is a vector wave. Its wave packet must be formed by superposition of various wave numbers with corresponding frequencies, as is the case for scalar waves, and additionally by superposing many eigenmodes which also depend on the wave number. To represent the vector wave packet self-consistently, it is found that a gradient term must be included in the expansion. For a Guassian wave packet, this gradient term is shown to have important implications on the velocity vector as represented by its hodograph. Numerical results show that the hodograph is influenced by the location of the relative position of interest from the center of a Gaussian pulse. Higher order expansion shows that an initial Gaussian wave packet will retain its Gaussian shape as it propagates, but the pulse will spread in all directions with its major axis undergoing a rotation. Numerical results indicate that these higher order dispersive effects may be marginally observable in the atmosphere