Modeling Shoreline Response to a Submerged Breakwater at Anmok Beach in Korea with Single Line Theory

2017 ◽  
Vol 4 (4) ◽  
pp. 161-176
Author(s):  
Yeon S. Chang ◽  
◽  
Bas Huisman ◽  
Wiebe de Boer ◽  
Jaeseol. Sim ◽  
...  
Keyword(s):  
Single Line ◽  
Submerged Breakwater ◽  
Line Theory

scholarly journals BEACH FILL AT TWO COASTS OF DIFFERENT CONFIGURATIONS

1986 ◽  
Vol 1 (20) ◽  
pp. 77
Author(s):  
Ichiro Deguchi ◽  
Toru Sawaragi
Keyword(s):  
Dissipation Rate ◽  
Clear Correlation ◽  
Submerged Breakwater ◽  
Topographic Data ◽  
Line Theory ◽  
The Cross

Movements of borrow sand replenished at two coasts of different configurations are investigated by analyzing the topographic data which were surveyed periodically after the beach fill placements. One is a long straight beach and borrow sand was placed behind a submerged breakwater. Another is a pocket beach which has an arcshoreline with a groyne at one end and a headland at another. It is found that the amount of borrow sand moved in the longshore direction surpasses the amount of borrow sand transported in the cross-shore direction regardless of the shape of the coast. A clear correlation is also found between displacements of shoreline and changes of sectional areas. These results imply that the deformation of the artificially nourished beach and the dissipation rate of borrow sand can be predicted by the so-called one-line theory.

Tandem scanning reflected light microscopy: How it works and applications

1986 ◽  
Vol 44 ◽  
pp. 84-87
Author(s):  
Alan Boyde ◽  
Milan Hadravský ◽  
Mojmír Petran ◽  
Timothy F. Watson ◽  
Sheila J. Jones ◽  
...  
Keyword(s):  
Light Microscopy ◽  
Focal Plane ◽  
Central Symmetry ◽  
Single Line ◽  
Scanning Microscope ◽  
Reflected Light ◽  
Illuminating Light ◽  
Illuminating Beam

The principles of tandem scanning reflected light microscopy and the design of recent instruments are fully described elsewhere and here only briefly. The illuminating light is intercepted by a rotating aperture disc which lies in the intermediate focal plane of a standard LM objective. This device provides an array of separate scanning beams which light up corresponding patches in the plane of focus more intensely than out of focus layers. Reflected light from these patches is imaged on to a matching array of apertures on the opposite side of the same aperture disc and which are scanning in the focal plane of the eyepiece. An arrangement of mirrors converts the central symmetry of the disc into congruency, so that the array of apertures which chop the illuminating beam is identical with the array on the observation side. Thus both illumination and “detection” are scanned in tandem, giving rise to the name Tandem Scanning Microscope (TSM). The apertures are arranged on Archimedean spirals: each opposed pair scans a single line in the image.

Kajian Model Fisik Pengaruh Freeboard dan Susunan Buis Beton Sebagai Pemecah Gelombang Tenggelam Ambang Rendah (Pegar) Dalam Mereduksi Gelombang

2017 ◽  
Vol 1 (2) ◽  
pp. 34
Author(s):  
Zulkarnain Zulkarnain ◽  
Nadjadji Anwar
Keyword(s):  
Low Cost ◽  
Relative Depth ◽  
Submerged Breakwater ◽  
Wave Flume ◽  
Concrete Cylinder ◽  
Engineering Department ◽  
Sea Area ◽  
The Waves ◽  
Transmission Test ◽  
Better Than

The Research Center and Development of Water (Puslitbang) is currently developing the Submerged Breakwater in shallow sea area (PEGAR). The author is interested to examine the material that easily obtained in the field of RCP concrete cylinder. The observation is how it to be ability in function as submerged breakwater an go green and low cost. The physical model of wave transmission test is how the response to the structure in ability to damping of wave as the breakwater function. In this research breakwater used is submerged breakwater type by using concrete cylinder (buis beton). The purpose from this research is to know how the response of breakwater structure to the waves through it, with some variation of the structure by creating a structure with three variations of the arrangement and freeboard that is the relative depth with the crest width is constant. The wave generated test in this study is using regular waves in wave flume at FTSP Civil Engineering Department of Institute Technology Ten November. From the analysis of the effect of the installation of submerged breakwater by using concrete cylinder to the wave damping value, it can be concluded that the factors that are very influential is the freeboard and the composition of concrete cylinder. Scenario A (rigid vertical massive) is capable of producing the smallest value of kt is 0.33. As for scenario B (rigid horyzontal massive) with a damping value of 0.5, while the scenario C (rigid permeable) is only able to produce kt value of 0.71. Scenario A is better than scenario B and C Because the position of arrangement of A is very good used to damp wave in small or big freeboard conditions.

More Tears in Achilles Tatius (7.4.3–6)

2018 ◽  
Author(s):  
G. O. Hutchinson
Keyword(s):  
Single Line ◽  
Delayed Effects ◽  
Vital Part ◽  
Achilles Tatius

A further passage shows the imagination and craft of Achilles Tatius taken to a still greater degree, as he depicts the hero Cleitophon at the terrible crisis of believing his beloved to be dead. The narrative is suspended as the writer develops, at remarkable length, a psychological and physiological observation on delayed effects. Where Heliodorus had heaped up imagery with abundance, Achilles develops with skilled organization a single line of thought and imagery, developing it and enriching it as he goes. Rhythm plays a vital part in this remarkable union of tight order and inventive imagination. The expansion and the deployment of science have a Plutarchan element; but the fantasy and the tautness create something quite different out of rhythm.

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