• 한국벤처창업학회:학술대회논문집
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• 한국벤처창업학회 2018년도 춘계학술대회
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• pp.177-180
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• 2018

최근 4차 산업혁명 시대라 하여 새로운 기술들이 등장하고 기술들이 융합되면서 새롭고 혁신적인 산업과 서비스가 창출되고 있다. 이러한 시대에 청소년들의 새로운 아이디어와 기술은 4차 산업혁명에 맞는 새로운 성장 동력을 확보할 수 있을 것이라고 여겨진다. 4차 산업의 혁명이 요청되는 이 시기에 산업을 견인할 수 있는 길은 창업의 길이다. 따라서 창업을 통해 4차 산업혁명을 이끌어갈 수 있는 인재가 무엇보다도 필요하다. 청소년들은 학교 프로그램을 통해 다양한 창업교육을 접하고 있으며, 공공기관의 대표적인 창업교육은 중소벤처기업부(구 중소기업청)가 주관하고 있는 BizCool이 있다. 교육부에서 중학생들에게 자유학기제를 2016년 1월 1일부터 실시하고 있으며 BizCool 교육을 통한 창업, 진학, 취업의 우수 사례들이 등장하면서 2017년 현재 대한민국 약 500여개의 학교에서 중소벤처기업부의 지원을 받아 BizCool 교육이 진행 되고 있다. BizCool은 청소년들의 기업가정신 함양 및 모의 창업 교육을 통해 확고한 경제관념을 형성하고 꿈 끼 도전정신 진취성을 갖춘 '융합형 창의인재' 양성을 목적으로 한다. 본 논문은 중학교 자유학기제를 통한 창업교육이 학생들에게 긍정적 사고와 학습성취도에 미치는 관계에 대해 연구하는데 목적을 두었다. 이 목적을 달성하기 위하여 대전광역시교육청에서 자유학기제 BizCool 교육을 받는 3개 학교를 선정하였고 갑천중, 도안중, 문정중 3개 학교의 창업교육 담당교사의 도움을 받아 창업교육 참가 학생을 대상으로 설문조사를 실시하여 연구결과를 분석하였다. 실증분석결과, 첫째, 창업교육은 학생들의 긍정적 사고에 양의 영향을 미친다는 것을 확인하였다. 둘째, 창업교육은 학생들의 학습성취도에 양의 영향을 미친다는 것을 제시하였다. 셋째, 창업교육은 학생들의 학습성취도에 긍정적 사고가 매개효과를 미친다는 것을 분석하였다. 본 연구에서 시사하는 바는 다음과 같다. 첫째, 연구결과 자유학기제 창업교육은 학생들에게 학습성취도를 높여 주었다. 따라서 학생들에게 도움이 되는 BizCool 교육을 전국 초, 중, 고등학교 11,733개교에 확산시켜 체계적으로 습득 할 수 있는 환경이 조성되어야 할 것이다. 둘째, 연구결과 창업교육은 긍정적 사고에 영향을 미쳤다. 전기숙(2016)에 따르면 청소년의 행복에 있어서 긍정적인 대인관계가 가장 중요한 요인이 된다고 하였다. BizCool 교육을 통해 사람과 팀의 소중함을 깨달으며 소통하는 법을 노력한다면 바른 인성을 갖춘 창의성 높은 학생들로 성장할 것이다. 셋째, 연구결과 창업교육의 학습성취도는 긍정적 사고를 가지고 있는 학생들에게 더욱 높게 나타났다. 긍정적 사고를 가지고 자신감 있게 매사 행동해 나간다면 학생들은 성취로 인한 만족감을 느끼며 행복한 학교생활을 해나갈 수 있고 BizCool 교육과 함께 멋진 미래를 만들어 갈 것이다. 본 연구에서 한계점은 다음과 같다. 첫째, 특정 지역, 특정 학교를 대상으로 실시하였기 때문에 표본의 수가 제한적이므로 전체를 대표하기에는 제약이 있다. 둘째, 긍정적 사고는 학생들의 환경과 상황에 따라 달라질 수 있으므로 연구 대상자의 조건 면에서 한계가 있다. 셋째, 중학교 자유학기제 창업교육의 체계화가 미비하다. 학교에서 창업교육을 하는 담당 교사는 창업 경험이 풍부하지 않기 때문에 창업교육 전문가가 필요하며 국가기관과 기업 등이 연계한 학습 형태를 구축하여 더 활발하고 현장감 있는 창업교육이 실시되기를 바란다.

• 한국의류학회지
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• 제24권5호
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• pp.696-701
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• 2000

Stockings are considered to be excellent in retention of heat in cool weather. This study was to investigate the physiological effects of wearing support panty stocking when exposed to the cool environment from mild environment. Five healthy female college students wearing(ST) or not wearing(NST) support panty stocking, rested at 25$\pm$1$^{\circ}C$, 50$\pm$5% R.H. and were exposed to 18$\pm$1$^{\circ}C$, 50$\pm$5% R.H. for 90 minutes. The results obtained were as follows: Rectal Temperatures were lower in ST than in NST at both environments. Skin temperatures in ST were revealed higher at $25^{\circ}C$, but lower at 18$^{\circ}C$ than in NST. Heat production and total weight loss didn't show significant difference between ST and NST. Total thermal conductance from the body to the environment was higher in ST than in NST at 18$^{\circ}C$. It was suggested that wearing support panty stocking would keep the body warm in mild environment, but facilitate heat loss from the body in cool environment.

• 한국조경학회지
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• 제30권1호
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• pp.96-104
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• 2002

This study was conducted to investigate physical properties of soil and turfgrass wear characteristics within turfgrasses inside or outside the stadium A 1/1000 scale model Inchon world cup soccer d[me was constructed for this test. Turfgrasses planted inside and outside the model dome were; Kentucky bluegrass(KB), Kentucky bluegrass + perennial ryegrass mixture (KB+PR), Kentucky bluegrass + tall fescue + perennial ryegrass mixture (KB+TF+PR), Zoysia japonica 'Anyangjungzii'(ZA) and Zoysia japonica 'Zenith\`(ZZ). The rootzone was constructed by the multi-layer method (United States Golf Association method). Traffic on turfgrasses was treated with a 120kg roller. Surface soil hardness, soil penetration and water infiltration values on cool-season grasses(KB, KB+PR, KB+TF+PR) was found to be better for soccer play compared to zoysiagrasses(ZA, ZZ). No big differences in surface soil hardness, soil penetration and water infiltration values were found between inside and outside of the model dome. Wear damage on cool-season grasses caused by the traffic treatment was low compared to zoysiagrasses. However, there was no difference in wear damage by the traffic treatment within cool-season grasses while wear damage on ZA was higher than on ZZ within zoysiagrasses. It could be concluded that physical properties and wear characteristics on cool-season grasses were much better for soccer play than on zoysiagrasses.

• Applied Microscopy
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• 제42권3호
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• pp.129-135
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• 2012

In this study, the changes in hair quality before and after Magic straight perm have been evaluated through a hair damage measurement method. For this, a healthy high school student's (age18 years) wavy hair was selected and permed on the left and right sides. Then, the changes caused by physical methods which were applied during the fl at iron-based Magic straight perm were evaluated based on the hair damage measurement method before and after the Magic straight perm. According to the protein release test after the Magic straight perm, 1.26% in average and 0.14% was observed in Cool Magic straight perm sample. In a field emission scanning electron microscopy (FE-SEM) test, saw teeth-shaped partial desquamation of cuticle cells and impurities were observed in the warm-treated hair sample. In atomic force microscope (AFM), line-profile is a method to represent roughness data on hair. According to analysis on 3-dimensional (3D) images, the hair with Cool Magic straight perm was lower than the hair with Warm Magic perm in terms of the color change of 3D images. In addition, vertical changes were observed in the hair with Cool Magic perm. As a result, irregular surface roughness was observed. This study proposed a method to minimize hair damage by cooling down the heat with the cool hair straightener as soon as the Warm Magic was finished.

• 천문학회보
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• 제39권2호
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• pp.58.2-58.2
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• 2014

We present the results of the KVN observations of central galaxies in cool-core and non cool-core clusters. The goal is to study how cooling environments affect the AGN activities in the core where their host galaxies are embedded. From the HIghest FLUx Galaxy Cluster Sample (HIFLUGCS), we have selected 19 radio bright AGNs located in the center of clusters with various cooling timescale. In our pilot study, we have obtained 22 and 43 GHz fluxes and morphologies of the sample using the Korean VLBI network. We find that 22/43 GHz fluxes do not strongly depend on the presence of a cool gas flow. However, an intriguing fact is that most AGNs in the cool-core clusters show the hint of a pc-scale jet component while the ones in the non cool-core clusters do not. Based on these results, we discuss the role of cooling flows in the central cluster AGNs and their co-evolution.

• 한국의류학회지
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• 제41권2호
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• pp.296-305
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• 2017

Gallnuts are known to exert various pharmaceutical properties that include anti-inflammatory, antimicrobial, antioxidant, and detoxifying effects. Gallnut extract is thought to be a particularly safe antimicrobial agent for textile application due to its natural origins. Hence, textiles were dyed with gallnut to develop multi-functional clothing material with no harmful effects. In this study, three kinds of cool touch woven fabrics, each comprised of 100% viscose rayon filament, viscose rayon filament/high absorption & quick dry (polyester) filament, and viscose rayon $filament/tencel^{(R)}$ spun yarn, were prepared and used as substrates for gallnut dyeing to especially develop functional cool touch textiles for summer clothing material. On the other hand, gallnut dyeing was conducted with mordanting with iron, lime or alum, which induced different colors on the dyed textiles. Dyed textiles were then investigated by SEM, FTIR, antibacterial test, and antioxidant test. Subsequently, gallnut dyed textiles indicated excellent antibacterial ability and deodorization activity regardless of mordant species. However, only gallnut dyed textiles mordanted with iron and alum showed significant antioxidant ability. In addition, the dyeing processes impair the cool touch feeling of the textiles by changing the micro structure of the textile surface.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.251-252
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• 2018

Cool roof coating materials generally use white color which has the highest reflectance, but it is a tendency to apply various colors because it can cause glare and fatigue of a nearby building user due to the urban beauty and high reflection. This study when applying color diversity material cool roof coating was carried out as a basic research for the degree of solar radiation reflectance change. Experiment result. As a result of the measurement of the reflectance of each specimen, white showed the best reflectance in the near infrared region, and black had the lowest reflectance. Also, in case of brown, it was confirmed that the reflectance of solar radiation in the near extrinsic region is lower than that of gray.

• 대한기계학회논문집B
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• 제28권11호
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• pp.1390-1397
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• 2004

This study is concerned with the thermal analysis during the cool-down period of 135,000㎥ class GT-96 membrane type LNG carrier under IMO and USCG design condition. During the cool-down period, the spraying rate for the NG cooling decreases as the temperature of NG falls down from -4$0^{\circ}C$ to -l3$0^{\circ}C$, and the spraying rate for the cooling of the insulation wall increases as the temperature gradient of the insulation wall is large. It was confirmed that there existed the largest temperature decrease at the first barrier and the first insulation, which are among the insulation wall, especially in the top side of the insulation wall under IMO and USCG design condition. Also, as the NG temperature distribution is fixed, the outer temperature condition under the design condition has influence on the temperature variation at the insulation. By the 3-D numerical calculation about the cargo tank and the cofferdam during the cool-down period, the temperature variation in hulls and insulations is precisely predicted under IMO and USCG design condition. From the comparison between two conditions; IMO design condition shows more severe temperature gradient than USCG design condition, therefore, it provides the conservative estimation of the BOG.

• 한국조경학회지
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• 제31권3호
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• pp.107-113
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• 2003

Ecological control can contribute to the sustainibility of vegetation management systems by reducing the input currently derived from non-renewable fossil energy sources. The use of turfgrass mixtures is an important tool in turf management. Turfgrass mixtures of two or more compatible and adapted species provide improved tolerance to pest and environmental stress, more so than monostands. The objectives of this study were to evaluated turf insects, pests and zoysia large patch control by turgrass mixtures. In April 2001 and 2002, plots were inoculated with 50g of Rhizoctonia solani AG2-2LP inoculum. Inoculum were treated within a 29cm diamater circle at Zoysia japonica, Zoysia japonica, Poa pratenis, or Festuca arundinacea mixtures. After four weeks, disease severity in each plot was determined. plot area visual ratings were assessed visually on a linera 0 to 100%. In August 2001 and October 2002, turf insects and pests in each plot were investigated in 10cm deep soil cores with 8cm diameters using hole cut. Zoysia large patch affected zoysiagrass monostands more severly than zoysiagrass and cool-season turfgrasses mixtures. It was suggested that the barrier effect of cool-season turfgrass suppressed zoysia large patch in the mixture of zoysiagrass and cool-season turfgrasses. Also, warm-season and cool-season turfgrasses mixtures suppressed insect populations more efficiently than warm-season turfgrass monostands.

• 농업과학연구
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• 제46권3호
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• pp.417-426
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• 2019

This study was conducted to evaluate seasonal effects on production performance of lactation sows reared in two different environments in South Korea. A total of 76 sows ($Landrace{\times}Yorkshire$) from the Dankook University experimental farm and 120 sows ($Landrace{\times}Yorkshire$) from a commercial farm were collected. In the current study, reduced (p < 0.01) feed intake and energy intake during lactation were observed in warm season compared with cool season in both farms. Sows in cool season had higher backfat thickness at weaning but lower back fat loss (p < 0.01) than those in warm season. The weaning to estrus interval was lower (p < 0.01) in cool season than in warm season. Piglets weaned in warm season had lower (p < 0.01) body weight (BW), body weight gain (BWG), and average daily gain (ADG) at weaning than did those weaned in cool season on the Dankook University farm, whereas the reduction effect was only observed during 0 - 21 d on the commercial farm (p < 0.01). Moreover, piglets weaned in cool season had higher BW, BWG, and ADG (p < 0.05) on both farms. In conclusion, our results indicate that warm season had very negative effects on feed intake and production performance of lactating sows and piglets.