• Journal of the Korean Society of Radiology
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• v.14 no.3
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• pp.313-318
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• 2020

Since radon is an inert gas and is a monoatomic molecule, the size of one particle represents the size of an atom, which means that it has a radius of approximately 1 to 100 nm. Therefore, if the mask has a radius smaller than the size of general fine dust and ultra fine dust, but it is possible to block the inhalation of radon more than a certain amount, it is considered that the exposure through the inhalation of radon can be reduced through normal indoor wear. Accordingly, we would like to find out the radon blocking effect of a mask worn in everyday life. Looking at the reduction rate of radon for each mask, cotton masks decreased by 33.45%, medical masks by 33.50%, KF 80 masks by 35.12%, and KF 94 masks by 37.72%. It was found that the radon blocking effect of the cotton and medical masks was somewhat inferior to that of the KF mask, but the difference was not so great that the introduction of radon into the air could be blocked to a certain level by wearing a mask.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.37 no.5
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• pp.625-630
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• 2013

The friction behavior of a 60-${\mu}m$-thick anodic aluminum oxide (AAO) film having cylindrical nanopores of 45-nm diameter was investigated as a function of impregnated oil viscosity ranging from 3.4 to 392.6 cSt. Reciprocating ball-on-flat sliding friction tests using a 1-mm-diameter steel ball as the counterpart were carried out with normal load ranging from 0.1 to 1 N in an ambient environment. The friction coefficient significantly decreased with an increase in the oil viscosity. The boundary lubrication film remained effectively under all test conditions when high-viscosity oil was impregnated, whereas it was easily destroyed when low-viscosity oil was impregnated. Thin plastic deformed layer patches were formed on the worn surface with high-viscosity oil without evidence of tribochemical reaction and transfer of counterpart material.

• The Research Journal of the Costume Culture
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• v.18 no.6
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• pp.1153-1164
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• 2010

The objective of this study is to analyze the coordination images seen in comprehensive fashion items and their features. This will be done from the viewpoint of both the creativity as well as functional characteristics of items and images. For the method of study, I explored the idea of "snood" style, analyzing its features of 42 pictures appearing from the 2006 S/S to 2010 F/W collection. It is important to note that "snood" style has the characteristics of both a muffler and turtleneck. With looping design connected at both ends, it can be placed around the neck or head, creating the image of wearing a hood. After having examined the selected data and pictures, one can largely divide the exclusive high-fashion image categories into three types: feminine, avant-garde, and finally, active & functional sportive image. First, the orthodox image is widely accepted by most as it has forever evolved within the original tradition of the practically functional muffler(scarf). Second, since the metamorphic image tends to lend itself to free ideas, you can wear a snood around the shoulders like a collar. Worn together with the same type of clothing, the snood can be seen as an effective suit. Third, the aim of image emphasis is to highlight certain points, or make some features more noticeable, as a means of possibly attracting more interest and attention. The image of snood arises out of the use of shapes, colors, and other accessory parts. As mentioned earlier, snood stands out as an independent item instead of just being an accessory to clothing. Its primary function as a style coordinator is emphasized in order to create more distinctive fashion images. Through this study, I thereby intend to provide fashion style data on the latest trends, and high-fashion codes of snood coordination.

• The Journal of Korean Academy of Prosthodontics
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• v.52 no.1
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• pp.42-47
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• 2014

Decrease of occlusal vertical dimension (OVD) due to loss of teeth structure and destruction of the occlusal plane by severely worn dentition may cause cross bite or temporomandibular joint disorder by following change of facial feature or the loss of anterior guidance. Full mouth rehabilitation via an increase of the OVD can be considered to avoid this problem and proper evaluation of patient's OVD is essential. An 80 year old male visited for overall prosthodontic treatment, cross bite due to continuous wear and following decrease of the OVD were observed. We analyzed the existing occlusal relationship using the diagnostic cast, the radiographic evaluation and clinical test, and then proper increase of OVD was selected. The new OVD on diagnostic wax up was placed by the temporary restoration. After 3 months of observation period, final restoration with fixed partial dentures and implant overdenture were made. Throughout the follow-up period of 8 months, the aesthetic and functional improvement can be obtained.

• Journal of the Korean Home Economics Association
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• v.43 no.8 s.210
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• pp.115-122
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• 2005

The hand performs functions such as grabbing and other movements. In order to accomplish these movements in various kinds of operational environments, appropriate gloves must be worn to protect your hands. Choosing the appropriate type of glove is very important when wearing gloves in these types of operational environments. The reasons one wears gloves varies depending on age and gender. Unmarried women in their early twenties, for example, occasionally wear gloves for decoration rather than for functional reasons. However, previous studies examined a range of topics, and as such investigations dealing with specific body shape and demands of consumer are needed. Therefore in this study, the hands of unmarried women ranging in age from 20 to 24 were measured and hand shape types were analyzed in order to present basal data which can be used to help design improved glove patterns and produce appropriate, functional gloves. A total of 261 Korean women were measured. Fifty-seven right hand dimensions were measured and five dimensions from both hands were measured. Six factors were identified through factor analysis and those factors constituted $73.259\%$ of total variance. Two clusters of hand shapes were categorized using 6 factor scores by cluster analysis. Type 1 hand shape is defined as long hands with small width, girth, and thickness, long and thin fingers, and high vertical palm height. Type 2 hand shape is defined as short hands with large width, girth and thickness, short fingers, thick knuckles, and short vertical palm height. The characteristics of type 1 and 2 hand shapes are similar to women's hand type classification results from previous reports, but there was a significant difference in subject distribution by type. Therefore, standard data on hand shapes should be produced by developing measuring instruments and selling more accurate standard measuring points. By doing this it could help in the development of improved glove patterns, and also aid in planning production based on hand type.

• Journal of the Korean Society of Costume
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• v.62 no.8
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• pp.71-80
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• 2012

The Kut is the core of the traditional folk religion. The afterlife wedding Kut actually performs a traditional wedding ceremony by personifying the deceased in the process of performing the composition of Kut geori that cannot be observed from other Kuts, which is an important means to convey the situation of Kut more clearly. A traditional wedding ceremony performed in the Kut enables the audience to understand the meaning behind the Kut. The costume worn in the traditional wedding ceremony of the afterlife wedding Kut makes the audience understand the existence of the deceased by the use of a scarecrow dialect and makes them feel a vivid sense of the scene emitting from the Kut, which performs a traditional wedding ceremony in the composition of Kut geori. The results of this study showed that a shaman who led the afterlife wedding Kut had a scarecrow that symbolized the bride and a bridegroom wear the traditional wedding costume in order to visualize the deceased and express the symbol of a wedding which could not be made in this world. It can be interpreted that the traditional costume derived from the afterlife wedding Kut plays a symbolic role, which converts the deceased into a living person through the formal aspect of ceremonial costume and the cultural aspect of wedding ceremony.

• Fashion & Textile Research Journal
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• v.16 no.5
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• pp.667-679
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• 2014

This study conducted a survey and investigated students' opinions and design preferences to physical education (PE) uniforms for elementary, middle and high school students using PE uniforms for the following purposes: to increase satisfaction with PE uniforms; present basic data for the development of PE uniforms helping to improve the quality of school life; and propose the development direction of PE uniforms. PE uniforms shall be developed with the components of uniforms, symbolism, functionality and aesthetics. The symbolism of PE uniforms expresses the affiliations of people wearing them and makes them have a sense of affiliation. The functionality presents convenience in students' physical activities and intramural/extracurricular activities. The aesthetics reflects the aesthetically sophisticated sport wear trend in PE uniforms. The development direction of PE uniforms was organized based on the result of analyzing and investigating students' opinions and design preferences to PE uniforms. There were differences in students' opinions and preferences to PE uniforms according to the type of student groups (elementary, middle and high school). In addition, there were clear gender-differences in the same student group. An effort might be required to reflect students' preferences because PE uniforms which students had currently worn at school had been manufactured without the reflection of students' opinions.

• The Research Journal of the Costume Culture
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• v.28 no.3
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• pp.356-375
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• 2020

The purpose of this study is to understand the characteristics and cultural values of the headdress among Chinese minorities with diverse ethnic cultures, and to provide various data on the design of clothing accessories. Theoretical considerations about ethnic minorities were addressed through literature and prior research, with data being collected using literature and websites. The results are as follows. First, the most common type of headdress is the horizontal type, which includes the head style, headband, and head scarf. The second most common is the cylinder type, which is a headdress with variations in the shape of a round hat, and has is evident among various minorities. Third, the pagoda type is decorated with ornaments mounted on top of a round shape. Fourth, the square crown type is a piece of wood as a material for a form of the material and for a variety of jewelry and the production of up to meet the women's head of the jewelry. Fifth, head belt-type ornaments consist of a headband and fancy bead ornaments from the bottom of the head. Mongol women usually wear an exaggerated form of this type. Sixth, the head cover type is a head decoration influenced by the dress code of Muslim women. Seventh is the disc type of crown shape worn by the Dai. Next, the ogival type is a cone-shaped headdress hat most commonly seen as head ornament hat among the Dai. Lastly, the sailboat type is the most exaggerated form of hair ornaments found among ethnic minorities.

• Journal of the Korean Society of Costume
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• v.52 no.7
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• pp.167-177
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• 2002

This study revolves around the costume of the Naadam festival worn in the opening ceremony. during competition and the costume of the public. their purpose are two fold. First they are to be the main reference for the diverse Mongolian costumes that have been researched. Secondly, they will help us understand better the culture that revolves around Mongolian costumes. The results are as follows : 1) The opening ceremony costume, The opening ceremony starts with a procession of soldiers with 9 flags. The flags are made from the hairs of white horses and they signify peace and tranquility, ever since the beginning of Chinggis Khans time. The costumes resemble a European military uniform 2) The costumes for competition. $\circled1$ Wrestlers' costume comprises of a jacket with sleeves but no front and shorty shorts of red or blue colored silk, a traditional hat and traditional boots. $\circled2$ Archers' costume comprises of their traditional costume, deel, hat and boots. $\circled3$ Horse riders who are usually children wear a comfortable and simple jacket and pants. 3) The costume of the public : The general public that attended the festival were dressed in a western fashion but differ according to different age groups $\circled1$ The costumes of the younger Mongolian : The majority of the men wore traditional costumes that were appropriate to the festival, the women did not as they were more prone to the influence of fads of western cultures and dressed in a more daring fashion. In addition. the children also dressed in a more modem western fashion. $\circled2$ The costumes of the elderly Mongolian : The elderly, oblivious of whatever season it was, were dressed in a more traditional fashion which is the deel.

• Journal of the Korean Society of Costume
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• v.61 no.4
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• pp.103-116
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• 2011

The purpose of this study is to investigate the revision of the western-styled court costume in the Daehan Empire. For this purpose, 1) historical documents were reviewed, 2) one set of the court costume of Chigimgwan and another set of the court costume of Juimgwan were probed, 3) the photos of people wearing court costume were analyzed. The results of this study are as follows. First, the $14^{th}$ Imperial order of "official costume statute" had been revised in 1904, 1905 and 1907 through official gazettes. The last version of official costume statute enacted the more detail than the first rule. Second, the $15^{th}$ Imperial order of "official costume rules" had been revised in 1904, 1905, and transformed into official costume rules reform on $12^{th}$ Dec., 1906. The revision in 1905 made gold embroidery of court costume more simple than the first rule. The form of court costume was totally revised by change of the shape of adjusting on the top in the revised rule of 1906. Third, the revision in 1905 was actually manufactured and worn by the people because it can be confirmed in the relics of the court costume of $2^{nd}$ Chigimgwan in Yonsei University Museum, and the court costume of juimgwan in Kwangju Municipal Folk Museum. The relics made by the revision in 1906 had not been reported until now, but they can be confirmed in the photos left. Fourth, the sovereignity of the Daehan Empire was actually lost by $22^{th}$ Imperial family order which urged the servant having the title of nobility of Japan to wear the court costume of Japan. Therefore, the endeavor of the Daehan Empire which wanted to establish and develop the costume system of modern independent nation was discontinued.