• Journal of the Korean Society of Clothing and Textiles
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• v.20 no.2
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• pp.257-269
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• 1996

The puropose of this study was to investigate the movement-fitness according to the surface changing of lower limb The experimental items were divided into the lower limb movements (5) and body-shapes (7). This study was done by the expansion and contraction rate consideration of length, girth Also, the lower half of body shape-change on the movements and body-shapes by flat shell was done simultaneously. The summarized findings resulted from experiments and investigation are suggested as follows; First, when commpared the expansion and contraction rate of the length and girth items, the expansion rate of the back crotch length (14~20%), hip girth (10~ 21%) and knee girth (6.2~18.5%) in rabbit leap movement was the most notable among all variables considered in this experimentation. On the others hand, the front croth length (-22~-52%) contracted remarkably. And big-thigh type was the most notable on the body-shape comparision. Second, in comparision of the expansion and contraction rate of the area on the blocks, the expansion of the hip (50~200%) and knee (51~74%) block was the most remarkable. Especially, in the sit on knees movement of the hip-down type expanded 209.4%. Third, in comparision of the lower half of body shape-change, on the movements and body- shapes by the flat shell, under the influence of knee-joint and hip-joint the shape-changs of the hip and knee block was the most notable. But the shape-change of the waist, abdomen, calf, and ankle was feeble.

• The Transactions of the Korean Institute of Electrical Engineers B
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• v.52 no.10
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• pp.484-490
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• 2003

This paper describes with the stator analysis and design of a ring type ultrasonic motor. The design for piezoelectric ceramic and elastic body of stator were calculated by using the finite element method (FEM) that consider the resonance frequency, vibration mode and coupling efficiency. Namely, such results were acquired the calculation result of the piezoelectric ceramic thickness 0.5[mm], elastic body thickness 2.0[mm], resonance frequency 51.8[kHz], vibration mode 7 order and coupling efficient 12.5[%], the outer and inner diameter of vibrator 50[mm], 38[m]. On the basis of such result, the ring type ultrasonic motor was manufactured. Also for driving characteristics of ring type ultrasonic motor, 2-phase inverter was constructed. Then the propriety of this paper was established from comparision of the simulation and an experiment results of the ring type ultrasonic motor.

• Korean Journal of Human Ecology
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• v.13 no.1
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• pp.135-144
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• 2004

The purpose of this study was to investigate the wearing sensation and satisfaction of high school girls winter uniform' jacket. The subject participated in the study were 599 high school girls attending four different schools. The fabrics were divided into two parts of stretch and non-stretch woven fabrics. The results were as follows: 1. The high school girls showed body image distortion that she recognized herself as fatter than her real body type. Especially, this was severe in the slim body type. 2. In the aspect of the satisfaction for uniforms' jacket made with stretch fabric and non-stretch woven fabric. the elastic fabric was more satisfied than the non-stretch one because its width and length was shorter and fitter than non-stretch one. 3. When they wore the school uniform jacket, the wearing sensation of one made with stretch and non-stretch woven fabrics showed significant differences in arms hole when raising hands, front bust when carrying backpack on their back, backs while studying at desks, the upper arms and the elbows. 4. As for the alteration of school uniform jacket, the non-stretch woven fabric was appeared to be altered more than the stretch one.

• Journal of the Korean Society of Clothing and Textiles
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• v.23 no.3
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• pp.391-401
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• 1999

For proper communication among manufactures in various countries and for consumers' convenience in purchasing garments imported from foreign countries the ISO revised the size designation system in 1969. Since 1970's various countries have revised their standard sizing system by adapting the ISO system . The purpose of this study is (1) to satisfy domestic consumer's needs by developing a sizing system based on that of ISO for Korean women in their early twenties and (2) to contribute to entering the international fashion market by manufacturing high quality apparel products The results were as follows: (1) By measuring and analyzing of 464 female between the ages for 18 and 24 the data indicated that body height could be divided into following three groups. S(Short) : 152cm (19.2%) R(Regular) : 160cm (57.8%) L(Long) : 165cm(22.6%) (2) According to the results to analyzing body type of this study the medium hip(drop 6) is 47.4% the large hip(over drop 12) is 42.7% the 2 types covers 90.3% (3) Comparing Korean women's size with foreign women's size DOB size code is 17 JIS size code is 9AR, FNOR size codes are 36n. 38n. and Italian size cods are 40, 42

• Journal of Korean Medicine for Obesity Research
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• v.5 no.1
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• pp.21-29
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• 2005

Objectives : This study was carried out to evaluate the difference of body mass index(BMI) distribution and the difference of effect of weight reduction program among Sasang constitution. Methods : Sasang constitution was differentiated by QSCC II of 875 cases. Body composition was analysed by bioelectrical impedance analysis(Inbody 3.0, Biospace, Seoul, Korea) in before and after treatment to evaluate the effect among Sasang constitution. The weight reduction program including very low calorie diet, electrical acupuncture and herbal medicine was treated to all cases equally during 1 month. Results and Conclusions : The group of Taeum was more obese and less reducted in body fat mass and % body fat in tools of percent rates of the changes than other type of Sasang constitution. In conclusion, the group of Taeum is more easy to become obese and more difficult to treat obesity

• Journal of Periodontal and Implant Science
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• v.29 no.4
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• pp.929-942
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• 1999

Three beagle dogs aged over one and half years were used in this study. All mandibular premolars were carefully extracted. Two AVANA implants(Sumin, Korea) and two 3i implants(Implant Innovation, USA) were installed at each right and left side respectively. Each dog was sacrificed at 4, 8. 12 weeks. Non-decalcified specimens were made and stained for a light microscopic study. The results were as follows ; 1. Inflammation was not observed in the area of bone tissue adjacent to the implant body. 2. With time, quantity of osseointe-gration increased in each type of den-dental implant. There was no difference between AVANA implant and 3i implant. 3. Maturation of the bone around each type of the dental implant increased with time. 12 weeks after implant installation, the bone around dental implant represented compact bone-like appreance. 4. In case implants were located adjacent to a root, newly-formed periodontal ligament tissue was observed around the implant. And the direction of the periodontal ligament fiber was parallel to the surface of the implant . Within the results of this study, AVANA implants represented similar osseointegra-tion in comparision with 3i implants.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.22 no.3
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• pp.554-561
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• 1998

Vehicle body structures are formed by thousands of spot welds and fatigue failure of vehicle structures occur near the spot welds after driving a long way at a durability test road. It is necessary to know accurately the reason of the fatigue failure of the spot weld in the developing stage in order to reinforce it. Many investigations have been done regarding the strength of spot welded joints, contributing to understand its fatigue strength. In developing process, a fatigue failed spot welded area can be repaired by $CO_2$ welding or another method to continue the test. To know the effect of reinforcing these welds, several methods of welding were analyzed and compared to spot welding. With the results of this test, the appropriate repair method can be used instead of spot welding during the development of new car and best design guide can be given for the strength. In this study, fatigue and static tensile tests are made and microstructure is investigated for the purpose of estimating the strength of welded joints by using spot welded and $CO_2$ plug welded specimens. The tested specimens are of two types : Tensile-shear type(TS) and L-tension type(LT).

• Journal of Fashion Business
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• v.13 no.2
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• pp.17-29
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• 2009

Due to rapid economic growth and accelerated urbanization, numerous cities in China have been turning into huge consumption markets almost simultaneously, and thus, the Chinese apparel markets being globalized are most vigorous in the world, attracting attention from the world apparel industries. If the Korean apparel businesses should develop the products befitting the conditions of the Chinese apparel markets and reflecting her consumers' fashion trends and needs, their apparels would be satisfactory enough to Chinese consumers, being competitive in the Chinese markets. In this sense, today's Chinese apparel markets may well provide the Korean apparel businesses with both crisis and opportunity. As one of the methods to enhance Chinese consumers' satisfaction with the Korean apparels, the Korean apparel businesses should consider seriously about the apparel fitting or a factor determining apparel silhouettes and sense of wearing. Since Chinese consumers differ widely in terms of body types and measurements depending on regions due to the vast territory, differentiation of the apparel fitting is more important than any other single factor, and thus, correct information about apparel fitting may well be directly related with manufacturing of excellent apparels. The purpose of this study is to comparatively analyze the upper body measurements and types of the Chinese and Korean women in their 20's to provide the Korean apparel business engaged in Chinese markets with some basic data about apparel fitting conducive to their development of effective apparel commodities. For this purpose, Chinese women in their 20's living in China's two major cities leading China's women's apparel markets were sampled.

• Polymer(Korea)
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• v.25 no.1
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• pp.142-150
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• 2001

Until now rubber industry field has used organic solvent base adhesive, there was always existed a fire risk, variety of quality and harmfulness of human body. To solve this problem we were developed a new adhesive that was maked by raw materials of hydrocarbon series which has the properties of nonvolatile and high flash point. Because of this new adhesive has the properties of nonvolatile and non-harmfulness to the human body, we expected to solve the problems of a fire hazard and the pollution of the environmental. Instead of the rubber binder that is used to a present adhesive, the new idea is adopted in a new type of adhesive. Nonvolatile solvent penetrated to the rubber surface and caused the swelling in rubber surface and as a result of this action, it has the self-adhesive power. In comparision with the present adhesive a new type of adhesive remarkably improved the maintenance time of adhesion and the durability of this adhesive showed similar aspect. Because it did not exhibit a drop of physical properties of rubber which was caused by swelling effect, we estimate that new type adhesive are very stable and not reacted to several rubber additives. While present adhesive appear the crack at cutting surface of curing rubber that caused by gas, new type adhesive not exist these crack.

• Korean Journal of Poultry Science
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• v.6 no.1
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• pp.12-23
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• 1979

This experiment was carrid out to investigate the interaction between boilelr strains and nutrition levels, and the performances of four broiler strains such as Han Hyup 603, Hubbard, Anak and Filch when they were fed by four different nutrition levels (High Protein and energy; HP. HE., Medium Protein and energy; MP. ME., Low Protein ana energy; LP. LE., and low protein and energy; LLP. LLE.). The data used in this study were obtained from a total of 1200 broiler type chicks in Poultry Testing Station, Korean Poultry Association from June 16, to August 11, 1978. Differences of all characters among four nutrition levels were significant except viability and carcass rate. HP. HE and MP. ME treatments showed nearly the same performances in body weight, feed efficiency and point, spread but they were significantly superior to those of LP. LE and LLP. LLE. There were not significant differences among four strains in feed efficiency and viability but other characters, body weight, point spread and carcass rate were observed that the performance of the best strain B was significantly superior to strain D but it was not recognized significance compared with strain A, C in tile result of statisticel analysis. In the interaction between strains and nutrition levels, body weight at high and levels showed significantly differences but at low and low nutrition levels were nearly same among four strains. Therefore this study demonstrated that comparision of body weights between strains should be performed at medium nutrition level or above. Also point spread calculated as index of body weight and feed efficiency was observed that strain B at low nutrition level is excellently higher than other strains and there were little differences at low nutrition level among all strains. It was found that ]it tie differences between performances of high arid medium levels seemed to be as the reason of high fat addition for energy source to high mutrition feed, and in general superior strain showed good performance at all the nutrition levels in$.$all characters but in body weight and point spread there were significantly different responses with different nutrition level, The most superior strain B among four strains earned the most profit per bird, Although performances of high and medium nutrition levels were nearly the same, medium nutrition level also showed the most profit because the feed cost of high nutrition level was higher than that of medium nutrition level.