• International Journal of Costume and Fashion
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• 제3권
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• pp.1-11
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• 2003

This study aims to recognize the value of traditional culture and to create 'Korean style rest costume' i.e. in-door clothes for comfort's purpose designed for hotel or other tourist accommodations with its own image. In so doing, national pride and identity will be exalted for Koreans, while an opportunity of cultural expose will be provided for foreigners through the symbols of Korea, which will contribute to the international introduction and representation of Korea. First, this study investigates the external characteristics in forms and structures of Korean style rest costume. Second, questionnaires regarding consciousness of Korean style rest costume and preference in design are distributed to the hotel guest and staff-both domestic and international- to be fir out. Lastly, designed rest costume representing Korean image, based on the results of the survey. Upon investigation, users and employers both preferred two piece style which is separated to upper garment and lower garment. While employers preferred short sleeve, users preferred long sleeves. In colors, employers preferred blue while users preferred white. In garments, both of. the employers and users preferred cotton, towel and cotton flannel. In addition, when introducing rest costume, it will be efficient to distinct the strategy between natives and foreigners, and also distinguish where the rest costume will be used.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.852-858
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• 2007

This paper investigates the dynamic characteristics of a tilted HDD spindle system with fluid dynamic bearings (FDBs). Tilting motion of a HDD spindle system may be caused by improper manufacturing tolerance, such as imperfect cylindricity between shaft and sleeve of FDBs, imperfect perpendicularity between shaft and thrust as well as the gyroscopic moment of the unbalanced mass of the rotating part. Tilting motion may result in the instability of the HDD spindle system and it may increase the disk run-out to limit memory capacity. This research proposes a modified Reynolds equation for the coupled journal and thrust FDBs to include the variable film thickness due to the cylindricity and the perpendicularity. Finite element method is used to solve the Reynolds equation for the pressure distribution. Reaction forces and friction torque are obtained by integrating the pressure and shear stress, respectively. The dynamic behavior is determined by solving the equations of a motion of a HDD spindle system in six degrees of freedom with the Runge-Kutta method to study whirling and tilting motions. This research shows that the cylindricity and the perpendicularity increase the tilting angle and whirl radius of the rotor.

• 한국주조공학회지
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• 제11권1호
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• pp.54-62
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• 1991

A computer program which consists of pre-processor, main solidification simulator and post-processor has been developed for three dimensional solidification analysis of steel castings. The pre-processor is used for mesh generation in a small personal computing system. The modified finite difference method is adopted for the main solidification simulation algorithm. The post -processor graphically presents the simulation results and shows the formation of shrinkage defects. Several experiments on large steel castings in sand mold were carried out. The temperature variations in casting and mold with time are measured experimentally, and the results are compared with calculation results. Several numerical examples for the prediction of shrinkage cavity in large steel casting of SC42 and SCNCrM2 alloys are compared with experimental results. The effect of sleeve and chills on solidification patterns are also studied. Formation of shrinkage defects for the three cases of experimental castings are relatively well predicted by present model.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2001년도 유체기계 연구개발 발표회 논문집
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• pp.197-202
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• 2001

The heat produced by the fission in the fuel of HANARO, 30 MW of research reactor, was transferred from the primary cooling water to the secondary cooling water through heat exchangers. The secondary cooling water absorbed the heat was circulated by secondary cooling pumps and cooled through 33 MW of cooling tower. Each capacity of the three secondary cooling pumps was fifty percent ($50\%$) of full load. The two pumps were normally operated and the other pump was standby. One of the secondary cooling pumps has often get troubles by high vibration. To release these troubles the pump shaft has been re-aligned, the pump bearing has been replaced with new one, the shaft sleeve has been replaced with new one, the shaft and the impeller have been re-weight balanced representatively or the vibration of motor has been tested by disconnecting the shaft of pump. But the high vibration of pump cannot be cleared. We find out the weight balance trouble of the assembly that the impeller is installed in the shaft. After clearing the trouble, the high vibration is released and the pump is operated with smooth. In this paper the trouble solution of secondary cooling pump is described including the reason of high vibration.

• 복식
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• 제56권8호
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• pp.1-14
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• 2006

This study is to examine the Hyangnag used in China. Results of the study can be described as below. 1. Hyangnang was also called Hyangdae, Hyanghapo, Hunnang and Chunnang. Perfumes were used to make the body and clothes diffuse a good fragrance. And Perfumes were used to prevent insects and remove related pollutions. It was possible to prevent insects when perfumes were burnt out. 2. In the Han, Song, Yao and Win periods, Hyangnang had Cylinderical, Rectangular, Cylinderical and Rectangular, Circular and Calabach types. These various types were developed into one, Norigae type, in the period of Ching. 3. Hyangnang were decorated mainly with embroideries, knots and seams. Embroideries were applied always onto the surface of Hyangnang. Knots were used mainly in the Song and Win periods, decorative seams were used mainly in the Ching. 4. From the Han to Yao periods, Hyangnang was made of perforate textiles like na and Sa for practical reasons, making perfume smells more easily diffused. From the Win to Ching periods, Hyangang was made of dense textiles like silk and Dan, which could be easily embroidered for decoration purposes. 5. Hyangnang was often hanged down from the waistband and up onto the fore chest or the elbow, or put into the liner of the sleeve. 6. Hyangnang has immanent implications of symbolism, ideology and aristocraticism.

• 복식
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• 제59권1호
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• pp.94-105
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• 2009

Jeogori, Korean jacket, can be categorized into two styles. Traditional style Jeogori is based on conventional construction method for ceremonial or festive occasions. Contemporary casual style Jeogori is based on western style flat pattern making for better fitting and functionality. Traditional style Jeogori is quite flat on human body because it is not considered the grade of shoulder line and is drawn by vertical & horizontal line. This characteristic feature causes weakness in functionality and comfort compared to contemporary casual style. Apparently contemporary casual style has better wearing comfort. Yet to most Koreans, contemporary style Jeogori seems to lack of some characteristic style of its own. This study is to find out how to make Jeogori well balanced in terms of functionality, fit, comfort and traditional style. Currently used Jeogori patterns are compared in order to select the best among them. Onto the selected pattern, several alterations were tried focused on shoulder, armhole and sleeve lines to make optimal modifications. After several comparative fitting tests, the final pattern making method was suggested.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.1796-1801
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• 2007

Piezocone penetration testing(CPTu) results such as cone resistance$(q_c)$, sleeve friction$(f_s)$, and pore pressure(u), have been carried out at 5 sites in Honam high-speed railway areas of Korea, in order to continuously estimate the characteristics of soil layers and the undrained shear strength$(S_u)$ in a soft ground. For the applications of the conventional CPTu results to undrained shear strength, the cone factors$(N_{kt})$ were deduced based on Field vane tests, and Monte-Carlo Simulation(MCS). Moreover the correlations of the undrained shear strength of CPTu by soil depths were compared and revised with the results of triaxial compression(UU test), field vane and Dilatometer tests(DMT). The depths of soft foundation at 5 sites in Honam high-speed railway areas were calculated based on the results of the various field tests in addition CPTu. The applicability of CPTu for a soft foundation criterion referred to the criteria of high-speed railway and related agencies in Korea was evaluated.

• 한국정밀공학회지
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• 제22권11호
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• pp.118-124
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• 2005

An automotive bushing is a device used in automotive suspension systems to reduce the load transmitted from the wheel to the frame of the vehicle. A bushing is a hollow cylinder, which is bonded to a solid steel shaft at its inner surface and a steel sleeve at its outer surface. The relation between the force applied to the shaft and the relative deformation of a bushing is nonlinear and exhibits features of viscoelasticity. In this paper, an automotive bushing is regarded as nonlinear viscoelastic incompressible material. Instron 8801 equipment was used for experimental res earch and ramp-to-constant displacement control test was used for data acquisition. Displacement dependent force relaxation function was obtained from the force extrapolation method and expressed as the explicit combination of time and displacement. Pipkin-Rogers model, which is the direct relation of force and displacement, was obtained and comparison studies between the experimental results and the Pipkin-Rogers results were carried out.

• 한국의류산업학회지
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• 제13권5호
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• pp.734-742
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• 2011

This study has been undertaken as a basic research for automatic pattern design for baseball uniforms manufactured under custom-MTM system, propose building up of a system whereby various partial patterns are combined under an automatic design system and develop a multi-combination type pattern searching algorithm which allows development of a various designs. As a result of this, type classification based on pattern design elements includes side, open, collar, facing and panel type. Design have been divided into coarse classification ranging from level 1 to 7 according to pattern design elements, based on a design distribution chart. Out of 7 such levels, 3 major types determining design which are, more specifically, level 1 sleeve type, level 2 open type and level 3 collar type, have been taken and combined to determine a total of 12 types to be used for design classification codes. Respective name of style and patterns have been coded using alphabet and numerals. Totally, pattern searching algorithm of multi-combination type has been developed whereby combination of patterns belonging to a specific style can be retrieved automatically once that style name is designated on the automatic pattern design system.

• 한국의류산업학회지
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• 제10권2호
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• pp.147-154
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• 2008

This study was carried out to examine the actual using condition of Yogawear and consumer's preference of Yogawear with traditional pattern. Yogawear can be developed as a cultural fashion item, because Yoga is getting universal interest with "Wellbeing Trend". A survey with 34 questionnaires was made by 305 consumers who had ever experienced Yoga from July to August, 2006. The results are as follows: 1. Most of objects were female(94%). Those who are in their twenties accounted for 50%, and those who take Yoga practice time less than 1 year accounted 63%, and those who take Yoga practice time less than 1 hour in a week accounted 46%. 2. Respondents who have Yogawear accounted 32% and they bought it in a online-shopping mall(48%), department store(16%) and discount store(11%). 3. Only 31% of respondents were satisfied of their Yogawear but they weren't satisfied about Yogawear Design, fabric and color. 4. Most preferred Yogawear style was pastel colored 'shirt & Pants' style with long sleeve using cotton fabric. 5. They liked much more modern Yogawear having korean image than completely korean style Yogawear or modern style Yogawear. 6.The benefits of Yogawear were 3 dimension: appearance, easy management, physical properties.