• Journal of the Korean Society of Costume
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• v.62 no.8
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• pp.118-133
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• 2012

A historical research on the costume of memorial service officials during the period of late 18th century, King Jeongjo period, is performed for an accurate reconstruction of the memorial service for King Danjong, which is a part of King Danjong Cultural Festival held at Yeongwol. This paper summarizes the results of the research as follows: 1. Jangneung memorial service is held only on Hansik day and the procedure follows the rule based on Gukjooryeui(國朝五禮儀). The service was first held in 1791 for King Danjong and his royal followers. 2. The rule based on Chunkwantonggo(春官通考), defines the king's tomb memorial services and attendees. King Danjong's memorial service follows the rule regarding its attendees and the attendees include high-ranking local government officials, local confucian scholars, and service men. 3. The costume of attendees for the King Danjong's memorial service is as follows: 1)Dangsangkwan(堂上官) and Danghakwan(堂下官) wear Sangbok(常服), which consisted of Samo(紗帽), Heukdanllyeong(黑團領), Pumdae(品帶), and black boots(黑靴). 2)Local confucian scholars wear their uniform consisting of Yukeon(儒巾), Dopo(道袍), Sejodae, and black boots. 3)Service men wear their uniform consisting of Jeonjakeon(典字巾), red-robe with rounded collar called Hongui(紅衣), Kwangdaw hoe(廣多繪), and Uuhae(雲鞋).

• Advances in Computational Design
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• v.7 no.2
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• pp.129-137
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• 2022

Compo-casting method is one of the popular technique to produce metal based matrix composites. But, one of the main challenges in this process is un-uniform spreading of reinforced subdivisions (particles) inside the metallic matrix and the lack of desirable mechanical properties of the final produced composites due to the low bonding strength among the metal matrix and reinforcement particles. To remove these difficulties and to promote the mechanical properties of these kind of composites, the WARM ARB technique was utilized as supplementary technique to heighten the mechanical and microstructural evolution of the casted Al/Al₂O₃ composite strips. The microstructure evolution and mechanical properties of these composites have been considered versus different WARM ARB cycles by tensile test, average Vickers micro hardness test, wear test and scanning electron microscopy (SEM). The SEM results revealed that during the higher warm- ARB cycles, big alumina clusters are broken and make a uniform distribution of alumina particles. It was shown that cumulating the forming cycles improved the mechanical properties of composites. In general, combined compo-casting and ARB process would consent making Al/Al₂O₃ composites with high consistency, good microstructural and mechanical properties.

• Journal of the Korean Home Economics Association
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• v.35 no.3
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• pp.307-318
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• 1997

I observed the important factors of clothing transition - Changes of Korean clothing & reception of Western-style dress - through the survey of the clothing of girl students during the period of enlightenment(1900∼1945) in this study as follows. 1) Stop to use of a long hood an old-fashioned woman shawI(once used to cover th head and upper body when going out). 2) Appearance of same colored Korean costume of the upper and lower sides. 3) Appearance of a short seamless one-piece skirt with a pair of shoulder girdles. 4) Appearance of school uniform, upper white lower black-Korean costume. 5) Appearance of school uniform, Western style. 6) Appearance of sports-wear. 7) Reformation of under-wear. 8) Appearance of short hair. 9) Appearance of socks & stockings and shoes.

• Journal of the Korea Safety Management & Science
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• v.11 no.3
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• pp.57-61
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• 2009

Garbage cause an environmental pollution, unsightly mess, fouls an odor, and unpleasant feeling. Various measures to solve the problems are studying. And the garbage are collected and treated by the street cleaner. Street cleaner is working for long time in the street from dawn to the night. And many kind of accidents are aroused, like traffic and crushing accident by garbage truck. This kind of accidents is increased every year. To prevent the accident, street cleaner wear a fluorescent light uniform But a count measures for the fallen accident and crushing accident from the garbage truck are insufficient. In addition, a street cleaner dose not like to wear a working uniform because of inconvenience. Therefore this study try to find a safety system of garbage truck for reducing measure of accidents of street cleaner.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.574-577
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• 2007

While disk can be overwritten on updating data, because flash memory can not be overwritten on updating data, new data are updated in new area. If data are frequently updated, garbage collection, which is achieved by erasing blocks, should be performed to reclaim new area. Hence, because the number of erase operations is limited due to characteristics of flash memory, every block should be evenly written and erased. However, if data with access locality are processed by cost benefit algorithm with separation of hot block and cold block, though the performance of processing is high, wear-leveling is not even. In this paper, we propose CB-MB (Cost Benefit between Multi Bank) algorithm in which hot data are allocated in one bank and cold data in another bank, and in which role of hot bank and cold bank is exchanged every period. CB-MB showed that its performance was similar to that of others for uniform workload, however, the method provides much better performance than that of others for workload of access locality.

• Proceedings of the KSME Conference
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• 2004.04a
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• pp.967-972
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• 2004

The role of transfer films formed during sliding of polymer composites against steel counterfaces was studied in terms of the tribological behaviors of composites. Four kinds of composites were included in this study: (1) unfilled PPS, (2) PPS+2%CuO, (3) PPS+2%CuO+5% carbon fiber (CF), and (4) PPS+2%CuO+15%Kevlar. The filler material CuO was in nanoscale particulate form and the reinforcing material was in the form of short fibers. The composites were prepared by compression molding at $310^{\circ}C$ and sliding tests were run in the pin-on-disk sliding configuration. The counterface was made of tool steel hardened to 55-60 HRC and finished to a surface roughness of 0.09-0.10 ${\mu}m$ Ra. Wear tests were run for 6 hrs at the sliding speed of 1 m/s and contact pressure of 0.65 MPa. Transfer films formed on the counterfaces during sliding were investigated using AFM and SEM. The results showed that as the transfer film became smooth and uniform, wear rate decreased. PPS+2%CuO+15%Kevlar composite showed the lowest steady state wear rate in this study and its transfer film showed the smoothest and the most uniform characteristics. The examination of worn surfaces of PPS+2%CuO composite using X-ray area scanning (dot mapping) showed back-transfer of steel counterface material to the polymer pin surface. This behavior is believed to strengthen the polymer pin surface during sliding thereby contributing to the decrease in wear rate.

• Journal of the Korean Society of Costume
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• v.32
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• pp.243-259
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• 1997

The object of this research is to inform readers of the chronikal change of Military Uniform in wars how the features and colors of uniforms have been changed along with the innovations of firearms. Military uniforms can be put into two differ-ent categories which are 'Battle wear' and 'Rank wear' A battle wear features of protec-tion and user fiendliness, These features of a battle wear can possibly minimize injuries and help increase the level of battling perform-ance. On the other hand a rank wear help dis-tinguish soldiers from their ranks and posi-tions. A rank wear symbolizs the pride that soldiers take n their unit and by wearing a rank wear soldiers feel more attached to their collegues and unit. Concrete process of military uniforms is as follows. 1. As firearms were innovated corres-pondant innovation of military uniforms were also needed this innovation were in the formstructure design color etc. 2. In the beginning features of military uniforms changed toward protection and then after social status of solders rised features changed forward show-off Finally as firearms became more fortal camouflage became the most significant feature of the military uniforms. 3. During war colors of military uniforms tended to be a means of show -off and camou- flage and while not in war they functioned as symbol which represent froops and the unit is tradition. 4. Other accessaries support the perforance and the symbolical function of uniforms.

• Fashion & Textile Research Journal
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• v.14 no.2
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• pp.286-293
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• 2012

The purpose of this study was conducted to provide basic information on developing highschool-uniform pants with more suitable fit. To carry out this study, questionnaires were administered to 187 students in high schools in Gwangju. The collected data were analyzed with frequencies statistics, t-test, ANOVA using the SPSS WIN 18.0. The results are as follows; As results of research on highschool-uniform regulation, 88% of the highschool in Gwangju allowed their students to wear school uniform pants. As results of investigation on the school-uniform pants sizing system of manufacturing firm, it was found that there's a trend towards increasing a large size with the change body type. The size labelling for school uniform pants was waist circumference-stature. There were differences in pants sizes according to the manufacturing firm and body measurements such as hip circumference, in seam length, pants length. As results of survey on wearing conditions, the selection of school uniform pants has increased in winter season. The most important body measurement in the choice of purchase was thigh circumference. In fit of uniform pants, respondents answered that waist circumference and hip circumference became smaller according to the physical growth.

• Journal of Korean Home Economics Education Association
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• v.22 no.1
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• pp.137-148
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• 2010

The usage status of trousers as school uniform for girl's middle and high school students in Seoul and the perception on trousers as school uniform were analyzed. Students who wore 'skirts only' were the greatest and students who wore 'trousers only' were higher in the case of winter uniform than in summer uniform. The most popular reason to wear skirts was 'because most of their fellow students wore skirts' in both winter and summer. The main reason for wearing trousers was 'because it was easy to cope with changes in temperature' in winter and 'because it allowed more comfortable movements' in summer. Students who wore trousers were generally satisfied with wearing trousers as school uniforms. However, they showed a low degree of satisfaction about design and color of trousers. The students preferred slim and straight trousers, and black col or with beige and blue being the next color. Students in general had low level of recognition for the need to wear trousers. Students perceived trousers as being cold-proof and comfortable for physical activities. But they also perceived that trousers were not suitable for improving their appearances and expressing their characteristics. Especially, the students who wore trousers tended to think that trousers reduced their cares for their personal attire and that trousers were good for wearing after school, but the students who did not wear trousers were found to think contrary.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1996.04b
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• pp.13-19
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• 1996

The tribological properties of the aluminum short fiber and glass fiber reinforced tin-bronze matrix composites manufactured by vacuum hot pressing was studied. The effect of the composition and the relative density on the wear properties was examined by a reciprocal type tribo-test machine. The results were discussed by the observation of the microstructure of sintered specimen and worn surface observation using SEM and EDS. Addition of the fibers led to the wear resistance since the metal matrix was reinforced by the fibers. The reinforcement of the fiber seemed to be stronger as the distribution of the fibers was more uniform. Graphite also reduce the wear loss. The pores in the sintered composites seemed to play an important role to improve the wear resistance since the pores provide the places where the solid lubricants locate.