• 대한가정학회지
• /
• 제42권10호
• /
• pp.105-113
• /
• 2004

This research was designed to investigate the preferred textiles for the jackets of college students. 105 subjects that majored in fashion design were surveyed. The subjects selected three favorite materials, according to the seasons, among 120 samples presented in a swatch book and their frequency of choice was tallied. The extent of the subjects' preference was compared by season and gender The results of this study were as follows: 1. College students preferred dark Grayish Brown plain variation wool Crossbred foremost as a textile for the spring and fan season. 2. White plain cotton Plisse was the most preferred material for summer. 3. Olive Gray cotton Corduroy was the most preferred textile for winter. 4. For thickness and weight, the textiles chosen for winter were thicker and heavier than those chosen for other seasons. 5. For fiber content, natural fiber such as wool were preferred for all seasons. 6. For the type of fabrics weave, a plain variation weave was preferred for spring and fall, twill was preferred for winter and plain weave was preferred for summer. 7. Collage students preferred gray and brown tones for the spring, fall and winter season. For color characteristics, solid fabrics were generally preferred and check patterns were especially preferred for the winter season. 8. Girl students generally preferred lighter and thinner fabrics than those chosen by boys.

• 전자공학회지
• /
• 제23권2호
• /
• pp.82-90
• /
• 1996

이미 도래하고 있는 정보화사회에 있어서 다양한 멀티미디에 XDTLS 서비스를 가입자에게 제공하기 위해서는 가입자망의 광대역화가 핵심적인 부분을 차지한다. 그러나 가입자망의 광대역화에는 많은 시간과 막대한 비용을 필요로 한다. 따라서 FTTH(Fiber to the Home)가 일반화되기 이전까지 가장 경제적인 가입자망의 광대역화 방안의 하나로 고려되고 있는 ADSL/HDSL 장치의 전송기술 개요와 선로환경 및 향후 전망에대하여 검토하여 보았다.

• 한국생활과학회지
• /
• 제10권4호
• /
• pp.411-419
• /
• 2001

This study was peformed to assess the nutritional status of female nursing home residents by dietary intake. The subjects were 60 nursing home residents aged over 60 from 3 different nursing homes in Seoul, Cheonan and Chunchon. Dietary intake was assessed by 24-hr recall and nutrient intake was calculated using CAN-Pro and database for vitamin E established by authors. To establish vitamin E database, we analyzed vitamin E concentration using HPLC in several foods consumed frequently by nursing home residents. The results of nutrient intake were as follows; 1) Average daily intakes of energy, protein, phosphorous, iron, vitamin $B_1$ and niacin were higher than RDA, but calcium, vitamin $B_2$ and niacin of Chunchon were lower than RDA. 2) Intakes of protein, sodium and niacin of Cheonan residents were significantly higher than those of Seoul. 3) Intakes of phosphorous, potassium, vitamin $B_1$ and dietary fiber of Cheonan residents were significantly higher than Seoul and Chunchon. 4) Intakes of sodium and cholesterol of Seoul residents were higher than Cheonan and Chunchon. 5) Average daily intake of vitamin E was lower than RDA. Especially vitamin A intake of Cheonan residents was significantly lower than other two cities.

• 한국의류학회지
• /
• 제30권11호
• /
• pp.1581-1588
• /
• 2006

The effects of removal of lignin or hemicellulose on the cottonizing and pulping characteristics of kenaf fiber were studied by comparing the conditions of non-cellulosic material contents, fiber lengths and dyeability. And the effects of lignin or hemicellulose on dyeability of the kenaf fiber using CI Direct Green 26 and CI Direct Red 81 were investigated. The results were as follows. The lignin contents decreased and the kenaf fiber became shorter and finer as the reaction time with sodium chlorite increased. The hemicellulose could be removed by treating sodium hydroxide solution to the fiber from which the lignin partly removed. The 80% of hemicellulose could be removed by 5% of sodium hydroxide solution in 5 minutes. But if lignin were not removed at all, hemicellulose could not be removed. The fiber lengths proper for apparel were obtained after treating sodium chlorite for 10-20 minutes and those for pulping were obtained after treating sodium chlorite for 40 minutes. The kenaf fibers from which lignin and hemicellulose partly removed were dyed with CI Direct Green 26 and CI Direct Red 81. Their dyeability increased as the removal rates of lignin increased. The ${\Delta}E$ values of kenaf fiber dyed with CI Direct Green 26 were lower than CI Direct Red 81.

• 정보와 통신
• /
• 제15권7호
• /
• pp.117-124
• /
• 1998

정보통신에 대한 생활의 의존도가 높아지면서 일반가입자 구간의 전송속도도 함께 높아지고 있는 추세이다. 향후 2000년대를 대비하여 각 가정에까지 광케이블을 연결하자는 FTTH (fiber to the home) 전략에 따라 세계 각 국에서는 이에 대한 연구개발을 추진중에 있다. PON (passive optical network)은 FTTH를 현실적으로 실현하기 위한 전송장치 개념으로서 본 고에서는 이에 관련된 내용을 중심으로 연구개발 동향과 FTTH 구축 전망을 살펴본다.

• 정보와 통신
• /
• 제22권6호
• /
• pp.73-82
• /
• 2005

광섬유를 통하여 가입자 댁내까지 수십- 백Mbps의 QoS(Quality of Service)가 보장된 데이터의 전송이 가능한 FTTH(Fiber To The Home)망에서는 기존의 Best effort망에서 제공이 곤란하였던 고품질 IPTV등 다양한 영상서비스의 제공이 가능하다. 본 고에서는 광대역 영상서비스의 최근동향과 KT가 광주광역시에서 제공하고있는 FTTH시험서비스의 내용에 관하여 기술하였다.

• 패션비즈니스
• /
• 제27권2호
• /
• pp.39-51
• /
• 2023

The purpose of this study was to effectively improve the thigh muscles of adult women working from home due to COVID-19. In this study, ten adult women working from home performed 1) an electromyography test, 2) a static balance test on a balance board, and a 3) dynamic balance test by squatting on a Bosu ball four times: before electric muscle stimulation (EMS), after EMS, after high-intensity circuit training (HICT), and after EMS plus HICT. For this test, EMS was attached to a medical knee support to manufacture an EMS knee band that could be easily worn regardless of the location. For the experiment, EMS(electric muscle stimulation) was attached to the medical knee protector to manufacture an EMS knee band that can be easily worn regardless of location, and was measured based on the right foot. The study results confirmed that in all tests (electromyography test, static balance test on the balance board, and dynamic balance test by squatting on a Bosu ball), thigh strength improved in the order of treatment before EMS, after EMS, after HICT, and after EMS plus HICT. The study showed that people working from home or with activity restrictions due to COVID-19 had better exercise effects when wearing the EMS knee band and performing HICT, even in a small space.

• 광산업정보
• /
• 통권33호
• /
• pp.22-33
• /
• 2006

FTTH는 궁극적으로 일반 댁내까지 광통신을 구축하는 기술로써, 각 가정에 구축된 광통신을 통해 고품질의 멀티미디어 서비스를 통합적으로 제공할 수 있다. FTTH는 사업자에게 새로운 서비스 제공을 통한 신규사업 기회를 줄 뿐만 아니라, 안정된 네트워크 품질로 인해 운용 유지보수 비용의 혁신적 절감이 가능하다는 장점이 있어 세계 주요 통신사업자들은 FTTH망 구축에 힘을 기울이고 있다.

• 광산업정보
• /
• 통권29호
• /
• pp.36-40
• /
• 2005

FTTH(Fiber To The Home)접속기술은 일본과 미국에서 이미 광범위하게 응용(총사용자 수가 약 500만 가구)되고 있으며, 중국에서도 큰 관심을 끌고 있다. 여기에서는 FTTH서비스 제공, 기술선택, 시장판촉, 정책적 지원등 방면에서 중국의 FTTH 발전전략을 분석하고자 한다.

• 한국의류학회지
• /
• 제15권3호
• /
• pp.271-280
• /
• 1991

Emulsion graft copolymerization of MMA onto cotton fiber using Ce(IV) salt as an initiator was carried out. Graft yield and graft efficiency were observed according to the kinds and concentrations of emulsifier and polymerization conditions. The physical properties of MMA grafted cotton fabric were investigated. The results of this study were as follows: 1. The heighest graft yield of emulsion graft polymerization occurred at the concentration below cmc of emulsifier, which was different from emulsion polymerization. Nonionic sur- factant as an emulsifier was more effective than anionic one. 2. The highest graft yield was obtained at the initiator concentration $1{\times}10^{-2}mol/l$. The viscometric molecular weight of PMMA was in the order of 106. 3. As reaction time increased, the graft yield increased but the graft efficiency decreased. 4. Elevation of reaction temperature resulted in increase of graft yield. The apparent activation energy of MMA graft polymerization was 4.72 Kcal/mol. 5. Physical properties of MMA grafted cotton fabric varied with increase of grafting. Thickness and stiffness showed a noticeable increase, whereas tensile strength and elongation was slightly increased. Crease recovery increased as the graft yield increase up to $50\%$ and decreased thereafter.