• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 1997.11a
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• pp.464-471
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• 1997

Convective smoke spread in a corridor is experimentally investigated using thermocouples and visualization technique with a laser beam sheet. The speed of smoke front under a ceiling is measured by a series of thermocouples. Visualization of the ceiling jet formation and of smoke filling process is carried out to observe the lowering of a smoke layer. From the results, a large-scale convective motion plays dominant roles for smoke spread in the vicinity of the end of the corridor from visualized photos along with temperature records. The large-scale convective motion of the smoke is generated from the impingement of the ceiling jet front on the end of the corridor, and thus turning the flows toward the floor. Such a circulating motion of fluid transports some smoke to some region where its momentum is effective. It is therefore shown that the conventional concept of lowering smoke in the two-layer zone model has some restrictions for the corridor because the lowering of smoke layer has been thought to be mass transport due to relatively small scale motions such as the decrease of buoyancy, mass diffusion and momentum exchanges.

• Journal of the Semiconductor & Display Technology
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• v.22 no.4
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• pp.99-102
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• 2023

In this paper, the system is proposed and implemented to share the part number, the part name, and the vehicle type through the improvement sharing bulletin board for automobile repair and maintenance. And when photos of damage parts are uploaded to the system, the system analyzes it using a deep learning model to analyze whether it is damaged and automatically classify the type of damage. By providing repair and maintenance quotes for a significant part, the system provides economically repaired by providing comparative adjustment information on repair costs to drivers who are particularly concerned about the market prices of parts and maintenance services. Through the existing bulletin board, you can exchange and share information about parts by sharing various information on repair and maintenance. This paper provides in detail the average market price per type of damage during automobile repair and maintenance, helping drivers who do not know the details of parts and maintenance services to receive reasonable quotes by providing price information.

• Journal of The Geomorphological Association of Korea
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• v.28 no.4
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• pp.1-13
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• 2021

In this study is aerial photos and UAV(Unmanned Aerial Vehicle) images were used to analyzed the characteristics of depositional landform changes in the Geum river channels before and after the opening gate of Gongju weir. Based on the depositional landform classification result, the main stream and the bare land occupied most of the area in all periods, and also found that the main stream, mid-channel island, and sand bar occupied a greater degree of area increase or decrease compared to other landforms in the classification items. As a result of analyzing the characteristics of depositional landform changes before and after the opening gate of Gongju weir, it is judged that the depositional landforms have changed due to the decreased water level of the Geum river after the opening of the weir, the summer rainy season and typhoons, river stabilization after the effluence of Daecheong dam, supply and deposition of river sediments and fixation of vegetation. The results derived from this study can be used as basic data for the study of river depositional landforms and the establishment of management and conservation plans for the landforms in river channels.

• The Research Journal of the Costume Culture
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• v.18 no.6
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• pp.1112-1128
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• 2010

This study aims to know the trace of Korean musical, consider musical depending on its type, arrange characteristic of musical costume and find out the developmental direction of Korean musical costume with potentials as a culture industry. For study method, the data were collected from thesis, academic journal, book and internet web-site concerning musical costume, literatures were considered and performance costume photos, which were captured via musical performance site, were analyzed. The history of Korean modern-day musical is regarded as starting with (1966) in the full scale. Although foreign musical was imitated in 1970s~1980s, it may be called the growth period of Korean musical because the period showed the commercial possibility. Since 1990s, large-scaled musical securing good work and popularity was popular. In 2000s, musical industry was abundant quantitatively and qualitatively as investment or popularity was significantly expanded. The type of Korean musical are divided to opera musical of European, Broadway musical of American and creative musical of Korean. The costumes used in opera musical of European and Broadway musical of American are borrowed from original works through license or were manufactured in Korea by referring to the costumes of original works and using similar materials or fabrics. The costumes used in creative musical of Korea are designed by either domestic or foreign designers and produced in Korea.

• Journal of the Korean Society of Earth Science Education
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• v.6 no.1
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• pp.13-19
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• 2013

The purpose of this research is to examine the current state of inserting illustrations in science textbooks under the 7th Revised Educational Curriculum which is currently enforced in all grades of elementary schools, and to compare and analyze the external and internal differences in illustrations in science textbooks of elementary schools in Singapore and Korea and to present desirable direction of producing illustrations. There are not only some differences in rate of the kinds and role of the illustrations in grades, but also in both countries. For example, in the case of illustrations for motivation, in both Korea and Singapore, interesting photos related to overall contents with regard to the contents of the unit are used. But in the 3rd and 4th grade class in Singapore, story types of cartoons related to learning subjects are presented to draw students' interest and attention. These need to be considered when developing textbook illustrations in the future.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.35 no.5
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• pp.153-160
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• 2019

The purpose of this study was to investigate the mechanical and durability characteristics of latex-modified concrete using ultra rapid hardening cement : four types of mechanical tests including compressive strength, modulus of elasticity, flexural strength and bond strength were performed; and seven types of durability tests including resistance of concrete to chloride ion penetration, freeze-thaw resistance, scaling resistance, coefficient of thermal expansion, cracking tendency, abrasion resistance and drying shrinkage were performed. Required material performance of each test was determined in accordance with the Korea specification for repair of concrete and pavement repairing materials. The test results satisfied the required material performances, and presented a good mechanical and durability characteristics. In particularly, the materials showed early development of compressive strength, flexural strength and bond strength at 3 and 4 hours after curing. SEM photos were also taken to investigate the micro structures of the materials after chloride ion penetration test.

• Animal Systematics, Evolution and Diversity
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• v.23 no.2
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• pp.229-235
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• 2007

Two euplotid ciliates collected from the estuarine littorals in Korea were identified as Euplotes vannus ($M\ddot{u}ller$, 1786) and E. parawoodruffi Song and Bradbury, 1997. These species are reported taxonomically for the first time from Korea. These two species are redescribed with illustrations, photos and biometry based on live and silver impregnated specimens. Diagnostics of each species are as follows. E. vannus: size in vivo $94-111{\times}55-75{\mu}m$ (average $103{\times}60{\mu}m)$, adoral zone of membranelles (AZM) 70% of cell length with 57-74 adoral membranelles (AM) and terminating close to hook-shape, macronucleus (Ma) C-shaped with twisted foot-like, 10 frontoventral (FVC), 5 transverse (TC), 4-7 (average 5) caudal cirri (CC), 9-10 dorsal kineties (DK), mid dorsal kinety with 15-22 cilia; silver-line system single vannus type. E. parawoodruffi: size in vivo $125-163{\times}72-100{\mu}m$, (average $141{\times}87{\mu}m$), dorsally strongly arched, body shaped reserved triangular. AZM 67-83% of cell length with 60-85 AMs, 9 FVC, 5 TC, 4 CC, 9 DK; mid-dorsal kinety with 20-30 cilia, double-eurystomus type, T-shaped Ma with equal sized right and left arms or right arm shortened slightly.

• Korean journal of applied entomology
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• v.55 no.2
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• pp.161-170
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• 2016

Four species (Diglochis sylvicola (Walker), Lariophagus obtusus Kamijo, Mokrzeckia lazoensis Tselikh, Paracarotomus cephalotes Ashmead) of the Pteromalinae and four species (Lamprotatus duplicatus (Kamijo), L. hikosanus (Kamijo), Stictomischus momoii Kamijo, S. scaposus Thomson) of the Miscogastrinae are recorded for the first time for the fauna of South Korea. Among them, Diglochis $F{\ddot{o}}rster$, Paracarotomus Ashmead, and Stictomischus Thomson are newly recorded from South Korea. Additionally, a key to the South Korean genera of Pteromalinae and Miscogastrinae and photos of diagnostic characteristics are provided.

• Journal of the Korean Society of Clothing and Textiles
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• v.17 no.2
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• pp.315-327
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• 1993

The purpose of this study was to clarify the model of fashion change related to the cyclical variations suggested by Kroeber and Young and the selected social changes factors since Kapokyungchang(1894) in Korea. The sample was drawn from illustrations and photos in newspapers and magazines such as Chosunilbo, Dongailbo, and Yeowon. Documentary research and a content analysis have been done. The results were as follows : 1. Cyclical variations in dress were apparent for skirt length and silhouette. However, Kroeber's model and Young's model that regulary recurring cycles exist did not fit the data for 1970 to 1990 in Korea. For skirt length, the cycles appeared to be approximately five to six years for 1970 to 1990. 2. Social and institutional factors tended to account for more the variance in dress dimensions than political factors.

• Journal of the Korean Home Economics Association
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• v.39 no.10
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• pp.19-28
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• 2001

China adopted a free market economy system and is about to enter into the WTO(World Trade Organization). It has now emerged as one of the most promising markets in the world for the near future. The purpose of this study was to investigate in Chinese and Korea women's street fashion and to suggest basic information for high quality clothing merchandising for China. The subjects in this study were 800 photos it was taken at the fashion street and college in Beijing(400) and Seoul(400). The survey was taken from December, 1999. SAS(Statistical Analysis System) is used for frequency, percentage, average, standard deviation, $X^2$-test. The results of this study are as follows. Examination on the Korean and Chinese street fashion showed that Korean and Chinese have different preference for silhouette, length, and color. China has different sensibility of the items of clothing. The Chinese students prefer classical and individual Chinese street clothing. Korean student has shown very fashionable street clothing all items. It is needed to different merchandising project for clothing in China.