• Journal of Korean Society of Coastal and Ocean Engineers
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• v.3 no.3
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• pp.163-169
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• 1991

Sixty seven regular wave tests were performed in a wave-current flume to investigate proper-ties of waves breaking on irregular slope profiles. In these tests, 1/10, 1/20 beach slopes were made using angles and plywoods. A little differences were found in such properties as breaker depth and height indices. runup for plane slopes comparing with other laboratory experiments. however. for smaller deepwater wave steepness, measured breaker height and depth data values were smaller than other formulas. On wave runup agreement was good between experiments and Hunt formula. however. measured data values were influenced by number of breaking. Significant differences were found in breaker depth index for plane and barred slopes. Wave height decay after breaking was found to be smaller than Dally et al.'s formula (1984).

• Journal of The Korean Astronomical Society
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• v.26 no.1
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• pp.33-45
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• 1993

We have conducted surface photometry of a spiral galaxy NGC4419, by making use of photographic plates in U, B, V and R-bands taken by 105cm Schmidt Camera at Kiso Observatory. Two dimensional surface brightness distributions as well as luminosity profiles along the major axis are examined in detail to decipher the morphological properties of the galaxy. Analysis of the color distributions of NGC4419 shows that B-V and U-B colors remain constant throughout the galaxy with a weak trend of blue bulge in B-V color. The blue bulge might indicate an active star formation in the nucleus of NGC4419. For a quantitative analysis of the luminosity distribution of NGC4419, the observed luminosity profiles are decomposed into bulge and disk components, assuming the bulge component to follow de Vaucouleurs $\gamma^{1/4}-law$ while the disk component is assumed to be exponential. The fitting generally fails at the central part and at the shoulder near r = 15' where bulge and disk components overlap. The failure at the central part cannot be attributed wholly by the seeing disk since the core-radius of the central plateau is much larger than the width of point spread function. The failure at shoulder could be due to the luminosities from the spiral arms.

• Journal of the Society of Naval Architects of Korea
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• v.38 no.4
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• pp.48-55
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• 2001

In this paper, sensitivity analysis for the coupled axial and torsional undamped free vibration of ship propulsion shafting is proposed. The purpose of this study is to effectively and optimally design the resonance frequencies of propulsion shafting affecting barred speed range of main engine by modifying the diameters of intermediate and propeller shafts. The presented method is validated by the sensitivity analysis for the natural frequencies of propulsion shafting of two real large merchant ships. In addition, the changes of natural frequency and resonance main engine speed are discussed in case that the diameter is varied within the range regulated by the rule of shipping register.

• Journal of Arbitration Studies
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• v.12 no.2
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• pp.115-151
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• 2003

As international trade and commerce increases among the nations in the world, it is inevitable fact that disputes rise as well. As these transactions grow more complex, it becomes increasingly important to resolve disputes and conflicts as quickly, efficiently and formatively as possible. In practical commercial affairs, we call a variety of international commercial troubles ‘trade claims’, Trade claims consist of disputes, controversies, or differences which may arise between the parties, out of, or in relation to, or in connection with their contracts, or for the breach thereof. Trade claim should be instituted promptly, otherwise it may be barred by prescription. Also, the other party will not accept the claim by reason of loss of evidence. In this connection, it should be noted that how long the claim prescription would continue. Trade claim should be settled reasonably and amicably between the parties concerned. And if both parties do not reach an agreement through their negotiation, then the claim shall be settled finally by binding arbitration. For the purpose of managing trade claim and arbitration, the trading parties insert in their contracts claim and arbitration clauses. This paper will examine some judicial precedents concerning claim clauses which are closely connected with a time limit of the claim It will also review some famous precedents rendered by the competent courts in connection with the wording, scope and implied renewal of arbitration clauses.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.1
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• pp.43.1-43.1
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• 2014

It has been suggested that only the most luminous AGNs ($L{\geq}$ [10] $^{45}L_{\odot}$ ) are triggered by galaxy mergers, while less luminous AGNs (L~ [10] $^{43}L_{\odot}$) are driven by other internal processes. Lack of merging features in low luminosity AGN host galaxies has been a main argument against the idea of merger triggering of low luminosity AGNs, but merging, especially a rather minor one, might still have played an important role in low luminosity AGNs since minor merging features in low luminosity are more difficult to identify than major merging features. Using SNUCAM on the 1.5m telescope at Madanak observatory, we obtained deep images of NGC 7743 which is a barred spiral galaxy classified as a Seyfert 2 AGN with a low bolometric luminosity of $5{\times}$ [10] $^{42}L_{\odot}$. Surprisingly, we newly discovered merging features around the galaxy, which indicate past merging activity on the galaxy. This example indicates the merging fraction of low luminosity AGNs may be much higher than previously thought, hinting the importance of galaxy merger even in low luminosity AGN.

• The Bulletin of The Korean Astronomical Society
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• v.41 no.1
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• pp.39.3-39.3
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• 2016

About one tenth of dwarf elliptical galaxies found in the Virgo cluster have a disk component, and some of them even possess substructures such as bars, lens, and spiral arms. We use N-body simulations to study the formation of these non-axisymmetric features in disky dwarf elliptical galaxies. By mimicking VCC 856, a bulgeless dwarf galaxy with embedded faint spiral arms, we construct 11 sets of initial conditions with slight dynamical variations based on observational data. Our standard model starts slowly to form a bar at ~3 Gyr and then undergoes buckling instability that temporarily weakens the bar although the bar strength continues to grow afterward. We find 9 of our models are unstable to bar formation and undergo buckling instability. This suggests that disky dwarf elliptical galaxies are intrinsically unstable to form bars, accounting for a population of barred dwarf galaxies in the outskirts of the Virgo cluster. To understand the origin of the faint grand-design spiral arms, we additionally construct 6 sets of models that undergo tidal interactions with their neighbors. We find that faint spiral arms consistent with observations develop when tidal forcing is relatively weak although strong encounter still results in bar formation. We discuss our results in light of the dynamical evolution of dwarf elliptical galaxies including mergers.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.1
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• pp.40.1-40.1
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• 2014

We have classified barred galaxies for 418 RC3 sample galaxies within z < 0.01 from SDSS DR7 using the visual inspection, ellipse fitting method and Fourier analysis. We found the bar fraction to be ~60%, 43% and 70% for each method and that the ellipse fitting method tends to miss the bar when a large bulge hides the transition from bar to disk in early spirals. We also confirmed that the Fourier analysis cannot distinguish between a bar and spiral arm structure. These systematic difficulties may have produced the long-time controversy about bar fraction dependence on Hubble sequence, mass and color. We designed a new method to fine bars by analyzing the ratio map of bar strength in polar coordinates, which yields the bar fraction of ~27% and ~32% for SAB and SB, respectively. The consistency with visual inspection reaches around 70%, and roughly 90% of visual strong bar are classified as SAB and SB in our classification. Although our method also has a weakness that a large bulge lowers the value of bar strength, the missing bar fraction in early spirals is reduced to the level of ~1/4 compared to the ellipse fitting method. Our method can make up for the demerits of the previous automatic classifications and provide a quantitative bar classification that agrees with visual classification.

• Korean Institute of Interior Design Journal
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• no.27
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• pp.120-127
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• 2001

The purpose of this study is to examine the characteristics of space design of Isamu Noguchi's works barred on the stage sets and environmental designs. From the end of 19th century, space which was begun to be studied about in architects has continued to be researched by not only scientists but artists. Recently, space Is expressed in free and new forms due to diversity of societies and advancement of technology, As a result, space has become an essential part in art and is used in the titles of many art exhibitions. This study scrutinizes space in Isamu Noguchi's works. No other 20th century artist has as clear and progressive space conception as Noguchi's. His notion of modern art was modified through space in the tradition of cubism and Russian Constructivism and Bauhaus. Combined with his experience in the traditional Japanese houses and gardens, these influences led toward a broadened conception of sculpture as the creation of living space. These modernist's characteristics are found in his early expression of stage sets for choreographer Martha Graham, and they would lead to a wide range of design activities, from gardens and interiors to fountains and furniture. Isamu Noguchi had created a body of work that crossed the boundary between fine and applied art as a sculptor, and as an environmental designer.

• Journal of the Society of Naval Architects of Korea
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• v.29 no.4
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• pp.75-86
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• 1992

This paper reports theoretical and experimental investigation into the added resistance of SWATH ships in waves. It was revealed from the experimental investigations on various SWATH models that the resistance of the SWATH models in waves is considerably reduced over part of the speed range as the wave height increases. As a first step to Identify it, the first and second order wave forces have been investigated barred on a linearised 3-D diffraction theory together with simplified boundary conditions and same results are reported herein. Also, the speed performance of SWATH ships in rough seas is compared with those of equivalent monohulls as well as with those of advanced high speed marine vehicles.

• Korean Journal of Ichthyology
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• v.26 no.2
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• pp.139-142
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• 2014

Based on a single specimen collected from the northern coastal waters of Jeju Island, we described Hemiramphus far as the first record from Korea. The specimen shows a elongated body with a prolonged lower jaw, 13 dorsal fin rays, 11 anal fin rays, 36 predorsal scales, and silvery white body with five black bars laterally and yellowish color on posterior part of lower jaw, tips of dorsal fin and upper caudal lobe. "Geom-mu-neui-hag-gong-chi" is proposed as a new Korean name for the species.