• Journal of the Korean Society of Clothing and Textiles
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• v.44 no.4
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• pp.626-638
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• 2020

In this study, protective masks were designed in varying internal volume and analyzed in regards to wearing effect. Masks were measured by surface temperature and subjective wear evaluation. Four experimental masks were created with an increasing distance between the mask center line and nose in increments. The distances were set at 0.0 cm (M0), 2.0 cm (M2), 4.0 cm (M4), and 6.0 cm (M6). The area and volume of each experimental mask was measured and both measurements had a positive correlation with the set distances. Among the experimental masks, M2 was the most breathable. The heat between the face and the mask created by exhalation was able to escape from the mask and provided the highest comfort sensation when worn. Conversely, an internal volume that is too large would decrease its comfort because repetitive breathing deforms the appearance of the mask and adversely affects its fit. Therefore, creating and maintaining the optimal internal volume of the M2 mask is important to achieve maximum thermal sensation and ease of wear.

• Journal of the Korean Society of Physical Medicine
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• v.12 no.3
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• pp.1-10
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• 2017

PURPOSE: This study assessed the effect of the pelvic compression belt on the electromyographic activity of erector spinae (ES), internal oblique (IO), rectus femoris (RF), and biceps femoris (BF) after bridge exercise with pelvic belt compression in subjects with lumbar instability. METHODS: Forty subjects with lumbar instability volunteered for this study. We asked them to perform the bridge exercise while wearing a pelvic belt compression for 30 minutes five times weekly over a six week period. The pelvic compression belt was adjusted just below the anterior superior iliac spines with stabilizing pressure using elastic compression bands during bridge position. Surface electromyographic data were collected from the erector spinae (ES), internal oblique (IO), rectus femoris (RF) and biceps femoris (BF). RESULTS: After the six week intervention, the experimental group improved significantly. Muscle activation significantly decreased in the erector spinae, rectus femoris, and biceps femoris, and increased in the internal oblique muscle in bridge position while wearing a PCB (P <.01). CONCLUSION: Our findings suggest that the bridge exercise with pelvic belt compression is helpful to reduce activation in superficial muscles and lower extremity muscles such as erector spinae (ES), rectus femoris (RF), biceps femoris (BF) and increase activation in deep trunk muscle such as the internal oblique (IO).

• Journal of the Korea Fashion and Costume Design Association
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• v.14 no.3
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• pp.135-146
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• 2012

This study aims to analyze the preference of jacket design, practical factors regarding jacket-wearing and purchasing behavior for korean baby- boom generation women. The results are as follows: 1. According to the outfit preference survey, the silhouette most preferred by female baby boomers is the "X-line Silhouette", "hip length", "slightly fitted and well fitted". The preferred jacket colors for different seasons were grey and beige for spring, white and light yellow for summer, khaki and brown for fall and black and dark grey for winter. 2. According to the survey on factors to consider when purchasing jackets, 52% indicated that they "almost never" or "occasionally" had their jackets repaired after purchasing them. When purchasing jackets, the highest expected effect of looking younger by wearing a jacket was "looking 4-5 years younger". 3. According to the survey on price demands, the average purchase price for jackets was 160,000~200,000 won (27.80%) followed by 210,000~350,000 won (25.64%) and a significant difference existed based on the purchasers' economic activities.

• Fashion & Textile Research Journal
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• v.22 no.5
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• pp.676-685
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• 2020

This study developed smart vests with heat and massage functions that changed patterns, designs, materials, etc., and evaluated their functions and satisfaction. A knitted fabric with good elasticity and a heating lining were used, and in consideration of this, the final vest pattern fitted to the upper body was completed. A heat pad was attached to the back, and 6 vibration motors were attached to the trapezius muscle. The controller was placed on the left chest for easy operation, and the battery was stored in an inner pocket under the controller. The heating effect of the smart vest, the location of the devices, and the ease of operation were excellent. When the massage function was operated, the thermal comfort was increased compared to when the massage function was not operated, and the high thermal comfort was perceived by the operation of heat and heat+massage function. Due to the battery, the weight, irritating contact of devices and wearing sensation decreased, but there was no reduction in wearing sensation due to heat and vibration devices. The greater the satisfaction with the massage function, thermal comfort, fit, appearance and weight, the greater the product satisfaction.

• Journal of the Korea Fashion and Costume Design Association
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• v.4 no.3
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• pp.65-73
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• 2002

The purpose of this study was to prepare lesson plans, study aids and multimedia learning materials for the clothing units in TechnologyㆍHome economics of the 7th national curricula. It's also meant to utilize these materials in instruction in order to provide students with more direct and practical learning experience and make them capable of leading a successful life in the 21st century. 1. The teaching plans were mapped out for the clothing units in TechnologyㆍHome economics class for middle school grade 2, which were all covered by eight textbooks: clothing and life(the function of clothes, my attire, wearing a suit, and wearing Korean traditional dress), the preparation of garments(the type of fiber, understanding of stuff, and preparing garments), and cloth care and storage (washing, storage, alteration and recycling). 2. The lesson plans included information on the name of units, period, learning objectives, teaching environment, materials, learning content, introduction, development, remarks, topping off, announcement for next session, and related Web sites. 3. To raise the effect of education, study aids were developed to be appropriate for the units. The lesson plans and study aids for the clothing part of TechnologyㆍHome economics class for middle school grade 2 would serve to help students build the right clothing habits, and are expected to serve as good teaching materials.

• Fashion & Textile Research Journal
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• v.8 no.5
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• pp.585-590
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• 2006

In the variation of physical properties of adhesive fabrics, the objective of this study is to analyze fitness of fusible interlining to four sorts of fabrics for men's suit with various structural parameters. Four fusible interlinings are used for adhering to fabrics for men's suit. Mechanical properties of these 16 adhesive fabrics fused with these interlinings are measured by KES-FB system for analysing appearance and wearing properties of garments and for examining the fitness of fusible interlining to the fabrics for men's suit. The variation of bending property for adhesive fabrics are found to be higher in the order of interlining 1(Cotton30/Rayon70, plain), interlining 2(Polyester30/Rayon70, warp knit), interlining 4(Polyester, shingosen fabrics with drawing textured yarn) and interlining 3(Polyester, double dot coating interlining). The variation of adhesive effect shows the same results with bending property and shows negative relation with extensibility in weft direction per extensibility in warp direction(EM2/EM1). The variation of peel strength of adhesive fabrics, woolen fabrics in the case of face fabrics and interlining 3 in the case of interlining shows the largest value respectively.

• Fashion & Textile Research Journal
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• v.10 no.5
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• pp.636-643
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• 2008

The purpose of this study was to establish the proper amount of eases according to the body type of men's bodice basic pattern. The 3 subjects in 30's men were selected for developing fitted pattern for each type. And the results of the wearing test for individual subject by distributing ease amount are as follows. The wearing test is administrated by a division of 12cm, 15m, and 18cm areas respectively after separating the fitted pattern for each type in a vertical and horizontal ways. There exists a significant difference in ease according to the measures of chest circumference of subjects. Also, it is shown that the more comfortable in function, the better visible in appearance as the ease gets proper. As to regions, the amount and ratio of ease chest circumference are increased in proportion to the size of the chest circumference. The scye depth is affected by the ease of chest circumference, while the ease of the interscye and the back breadth are lessened due to the effect of their appearances. And the side breadth is required as a buffer to complement the shortage of the interscye and the back breadth because the ease of either the interscye or the back breadth is partially transferred in motion.

• Fashion & Textile Research Journal
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• v.8 no.6
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• pp.727-732
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• 2006

The purpose of this study was to investigate the effects of flame-proof clothing on physiological responses and subjective sensation. We measured rectal temperatures, local skin temperature, clothing microclimate, blood pressure, heart rate, body weight loss and subjective sensation during 90 minutes (30 min of rest, 45 min of exercise and 15 min of recovery periods). Seven male subjects wore flame-proof clothing or reformed flame-proof clothing under the environmental condition of $35{\pm}1^{\circ}C$, $45{\pm}5%$ RH and $25{\pm}1^{\circ}C$, $50{\pm}5%$ RH. The results of this study were as follows; Rectal temperature, mean skin temperature, clothing microclimate and blood pressure were significantly lower levels in reformed flame-proof clothing. Heart rate and body weight loss were also showed lower levels. Subjects replied less hot, less uncomfortable and less wet in wearing a reformed flame-proof clothing. Our present results suggest that the ventilation through of gusset in underarm seam and zipper in sideseam of slacks are qualitatively useful for physiological needs.

• Journal of Korean Clinical Health Science
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• v.5 no.4
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• pp.1021-1025
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• 2017

Purpose: Changes in corneal thickness after wearing hydrogel lens and silicone-hydrogel lens with different oxygen transmission rates wew syudied. Methods: Experiments were performed on 11 subjects(22 eyes). corneal thickness was measured after wearing contact lenses for 8 hours. Corneal thickness was measured using ORB Scan II(ver. 3.14) Results: In the results of the corneal thickness measurement by direction, in the case of the hydrogel-tor lens, the center thickness was $33.63{\mu}m$, the nasal was $34.29{\mu}m$, the temporal was $27.17{\mu}m$, the inferior was $27.17{\mu}m$, the superior was $18.90{\mu}m$, and change rates were 6.28%, 5.71%, 5.40%, 4.75% and 3.09%, respectively. In the results of the corneal thickness measurement by diameter, in the case of the hydrogel-tor lens, the center was $33.63{\mu}m$, the mid-peripheral was $28.19{\mu}m$, the peripheral was $24.18{\mu}m$, and change rates were 6.28%, 4.76%, and 3.79%, respectively. Conclusions: The hydrogel lenses with relatively low oxygen transmission rates resulted in a significant increase in thickness over the entire cornea compared to silicon-hydrogel lenses with high oxygen transmission rates.

• Transactions of Materials Processing
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• v.26 no.6
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• pp.365-371
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• 2017

During sling wear of a ferrous metal, a surface layer is formed. Its microstructure, constituting phases, and mechanical property are different from those of the original wearing material. Since wear occurs at the layer, it is important to characterize the layer and understand how wear rate changes with different layers. Various layers are formed depending on external wear conditions such as load, sliding speed, counterpart material, and environmental conditions. In this research, sliding wear tests of pure iron were carried out against two different counterparts (AISI 52100 bearing steel and $Al_2O_3$) in the air and in an inert Ar gas atmosphere. Pure iron was employed to exclude other effects from secondary phases in steel on the wear. Wear tests were performed at room temperature. Worn surfaces, wear debris, and cross-sections were analyzed after the test. It was found that these two different counterparts and environments produced diverse layers, resulting in significant changes in wear rate. Against the bearing steel, pure iron showed higher wear rate in an Ar atmosphere due to severe adhesion than that in the air. On the contrary, the iron showed much higher wear rate in the air against $Al_2O_3$. Different layers and wear rates were analyzed and discussed by oxidation, severe plastic deformation, and adhesion at wearing surfaces.