신경세포의 Outgrowth 향상을 위한 마이크로 파이버 지지체와 전단응력의 영향

김인애,박수아,김영직,김수향,신호준,이용재,신지원,신정욱 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

We introduced mechanical stimuli and micro patterned substrate with micro fibers to investigate the effects of those on neurite outgrowth along with nerve growth factor (NGF) in vitro. Micro fiber substrates were fabricated using an electros pinning process. And PC-12 cells cultured on substrates were simulated with newer growth factor and laminar flow shear stress in a fluid flow system. The results suggest that micro fiber substrates and fluid-induced shear stress are promising for simulating neuronal regeneration in a desired direction.

청소년의 스마트폰 중독과 우울 및 불안과의 관계

김경은,김필송,민주연,박수경,신서인,이지은,정해인,조호정,최정원,최정인 이화여자대학교 간호과학대학 2013 이화간호학회지 Vol.- No.47

Purpose: The purpose of this study was to investigate the relationships between the degree of smart phone addiction among adolescents and their depression and anxiety levels. Method: In this study, 379 high school students were selected using the convenient sampling method. The instruments used for this study were smart phone addiction measure, the CES-D (Center for Epidemiological Studies-Depression Scale), and the STAI (State-Trait Anxiety Inventory). Data were analyzed using the SPSS 20.0 program with descriptive statistics, t-test, ANOVA with Scheffe test, and Pearson’s correlation coefficient. Result: The mean score for smart phone addiction was 40.45±17.27, depression was 36.56±9.58, state anxiety was 44.00±9.61, and trait anxiety was 45.70±9.75. There were significant differences between the degree of smart phone addiction and the following variables: gender (t=-4.953, p<.001), hours of smart phone use per day (F=12.259, p<.001), types of frequently used features (F=3.485, p=.008), and satisfaction level for smart phone (F=5.18, p<.001). There were statistically significant relationships (p<.001) among degree of smart phone addiction, depression level, and state and trait anxiety levels. Conclusion: The results of this study suggested that there was a significant relationship between smart phone addiction and mental health, specifically, depression and anxiety among adolescents. Further research is needed to develop nursing strategies to provide care for adolescents who frequently utilize smart phones.

가새의 위치를 고려한 튜브 구조물의 횡적거동에 관한 연구

신수미,이정훈,박성수 釜山大學校生産技術硏究所 2002 生産技術硏究所論文集 Vol.61 No.-

본 연구는 수평하중 하에서의 가새 튜브 구조 시스템의 거동을 분석하기 위하여 기본 골조 튜브 모델에 위치가 다른 가새를 추가한 가새 튜브 모델에 대한 해석을 수행하였다. 구조해석은 3차원 탄성해석 프로그램인 MIDAS GENw를 사용하여 수행하였으며, 구조 해석을 수행한 후, 각각의 거동 특성을 비교 분석하여 가새의 특성에 따른 횡변위 감소 효과 및 전단지연 현상의 완화를 고찰하고자 한다. The braced tube structure is a solution to increasing the efficiency of the framed tube structure, which is to add the substantial diagonal bracing to the faces of the tube. Due to additional braces, the flexural rigidity of structure is increased and the shear lag effect is decreased. Therefore the structure behaves like a cantilever tube. To analyze the behavior of the braced tube structure under the lateral load, the braced tube model, which adds diagonal members of the various characteristics - location, shape, stiffness - to the framed tube model, is used.

인터넷 패션 쇼핑몰의 마케팅 전략 : 인터넷 패션 쇼핑몰의 사례조사를 중심으로 Focused on the Case Study of Internet Fashion Shopping Malls

신수연,김민정 服飾文化學會 2004 服飾文化硏究 Vol.12 No.1

The purpose of this paper was to propose the efficient strategies of internet fashion shopping malls to success in the internet shopping mall market growing rapidly. Representative 5 internet fashion shopping malls - Halfclub, Fashionplus, e-Hyundai, Hansol CSCIub and LGeShop - were selected and in-depth interviews were performed to analyze their marketing 4P's strategies. The results of this study are as follows. Five shopping malls' main targets are women in twenties and early thirties. The price strategies are various according to shopping malls' character. In general, there are small amounts of discounts on new products(about 5%) which are sold by department stores. Shopping malls executed delivery of goods by cooperation with distribution companies and direct distribution of subcontract companies. Shopping malls are sending e-mails to the members as a promotion strategy. CRM(Customer Related Management) is partially implemented. Joint purchase and various events are conducted frequently. Shopping malls guarantee exchange and refund services.

Streptozotocin으로 유발된 당뇨병쥐의 신경전도속도에 대한 Evening primrose oil (EPO), Vit.C, Vit.E의 약물효과

신창열,류정수,김학림,강봉수,손의동,허인회 중앙대학교 약학연구소 1997 약학 논총 Vol.11 No.-

The effects of evening primrose oil (EPO). Vit.C and Vit.E on nerve conduction velocity (NCV) in streptozotocin -induced diabetic rats were investigated. 5 weeks- diabetes caused 27±0.5 % reduction in sciatic motor conduction velocity as compared with normal control. Dietary supplement of 5% EPO. 125mg/kg Vit.C. and lg/kg Vit.E prevented significantly the development of the motor nerve conduction velocity deficit about 21±0.5, 21±0.5, 26±0.5% respectively. The total serum cholesterol and triglyceride were decreased by administration 5% EPO. Vit.C, and Vit.E as compared with diabetic control. However, the serum glucose was not decreased by administration 5% EPO. 125mg/kg Vit.C but the serum glucose was decreased by administration lg/kg Vit.E as compared with diabetic control.

가루녹차(抹茶) 첨가가 증편의 품질에 미치는 영향

정수영,유현희,김금숙,신미경 원광대학교 생활자원개발연구소 2005 생활자원개발연구 Vol.7 No.-

The purpose of this study is to find out the optimal mixing ratios of amounts of Mal-Cha for preparation of Jeung-Pyun through Sensory, Mechanical characteristics test. The proximate composition of Mal-Cha were a 5.46±0.15% of moisture, 4.43±0.11% of total nitrogen, 7.52±0.21% of crude lipid, 8.74% of crude fiber, 8.51±0.09% of ash. Overall quality in 1.5% Jeung-Pyun showed the worst of 0, 0.5, 1.0% Jeung-Pyuns(p<0.05), especially 1.0% Jeung-Pyun had relatively the best overall quality. But the sweetness, sourness, flavor, hardness, moistness were not significantly different among all Jeung- Pyuns. 0, 0.5, 1.0% Jeung-Pyuns showed the best quality of Jeung-Pyun through sensory, mechanical property. Total color difference was increased as amount of Mal-Cha(p<0.001).

대학생의 여가활용능력이 여가만족에 미치는 영향

정수진,이승철,심상신 한국레크리에이션 교육학회 1999 한국여가학회지 Vol.1 No.1

The purpose of this study was to examine the relationships of types of leisure activity on leisure diagnotice battery among college student. The main purpose of this study was to examine the difference of the leisure diagnotice battery by comparing of gended, a college year, types of leisure activity. Subjects of this study were sampled 277 college student. Statistic employed in this study were Frequency analysis, t-test. Base on the procedures and results, the following conclusions were warranted ; First, There are significant difference of leisure confidence, leisure control, leisure flow by gender. that is to say, the male student are to be high than the female student. Second, There are significant difference of leisure confidence, leisure control, leisure flow, leisure need by a college year. that is to say the sophomore are to be high than the freshman. Third, There are significant difference of leisure confidence, leisure control, leisure need by a types of leisure activity. that is to say, the positive types of leisure activity are to be high than the negative types of leisure activity.

말차(抹茶)의 성분 분석

정수영,신미경 원광대학교 2006 論文集 Vol.36 No.-

Mal-Cha(powdered green tea) can be effective in the absorption of ingredients compare with other types of green tea since we take the beverage with powder itself. In the present study, composition of Mal-Cha were investigated to develop functional food. The proximate composition of Mal-Cha were a 5.46±0.15% of moisture, 4.43±0.11% of total nitrogen, 7.52±0.21% of crude lipid, 8.74% of crude fiber, 8.51±0.09% of ash. Contents of minerals(positive ions) in Mal-Cha were K 27.3mg/g, Ca 2.84mg/g, Mg 1.82mg/g, Mn 0.64mg/g, Na 0.19mg/g, Fe 0.08mg/g, Zn 0.03mg/g, Cu 0.005mg/g. Contents of fatty acid in Mal-Cha were C_(18:3)(Linolenic acid) 50.97%, C_(18:2)(Linoleic acid) 21.79%, C_(16:0)(Palmitic acid) 18.45%, C_(18:1)(Oleic acid) 6.50%, C_(18:0)(Stearic acid) 2.28%. Contents of vitamins were β-carotene 301.07mg%, ascorbic acid 148.79mg%.

자동 문턱치 방법을 이용한 밀리미터파 영상의 은닉된 물체 영역 검출

이동수,염석원,손정영,김신환 대구대학교 정보통신연구소 2010 情報通信硏究 Vol.7 No.1

본 논문은 수동형 밀리미터파 영상 시스템을 이용하여 은닉된 물체의 영역을 검출에 관한 연구이다. 밀리미터파 영상은 악천후에도 영상 촬영이 가능하고 플라스틱, 종이, 나무, 옷, 머리카락 같은 특유한 물질들을 투과한다. 그리고 밀리미터파는 금속과 특수한 인공 구조물에 대한 반사율이 높기 때문에 은닉된 물체를 쉽게 검출할 수 있다. 본 논문에서는 밀리미터파 영상에서 은닉된 물체 검출의 영상 분할을 자동 문턱치 방법으로 나타낸다. 본 논문에서는 8㎜ 파장을 수평과 수직 편광 방향으로 수신하는 두 채널에서 획득된 밀리미터파 영상을 Gonzalez와 Otsu 방법으로 영역 분할을 한다. 실험 결과는 Gonzalez과 Otsu 방법 모두 은닉된 물체 영역의 형태를 잘 분리하지만 Otsu 방법이 노이즈와 몸체 영역의 경계 부분이 안정적으로 영역 분할됨을 보인다. We address an image segmentation method to detect concealed objects captured by passive millimeter wave (MMW) imaging. Passive MMW imaging can create interpretable imagery on the objects concealed under clothing. Due to the penetrating property of the MMW imaging, the MMW imaging system is often employed for the security and defense system. In this paper, we develop automatic thresholding methods for the segmentation of concealed objects detected by PMMW imaging. The automatic thresholding method is useful for the image with bimodal distributions. We compare several thresholding methods for two MMW channel images which have 8 mm-horizontal and 8 mm-vertical polarization, respectively. The experimental results show that concealed weapon area is well segmented from the background body by the presented methods.

生物學的 燐除去機轉 및 內部返送率과 SRT가 除去率에 미치는 影響

신응배,이영대,최용수,이정욱 漢陽大學校 環境科學硏究所 1995 環境科學論文集 Vol.16 No.-

본 연구에서는 생물학적 인 제거공정의 혐기-호기-무산소 조건을 단일 반응조내에서 발생토록 고안하여 인제거 실험을 수행하였으며, 고안된 반응기내에서의 인 제거기전을 규명하고 제거효율을 평가하였으며 또한 내부반송율과 SRT 변화에 따른 유기물과 인제거 효율을 평가하였다. 고안된 공정의 종합적 인제거효율 평가를 통해 최적 운전조건을 평가·분석하였다. 실험 결과 유기물 제거율은 Aerobic recycle rate 100%, 200%에서 TOC 95% 이상, BOD와 COD 90% 이상으로 우수하였으며, 인은 Aerobic recycle rate 100%에서 폐수유입 지점 0.2일 때가 최적조건으로 분석·평가되었다. SRT 변화와 T-P, PO₄-P 제거율과의 관계는 SRT 10일에서 94%, 92% 이상으로 높은 제거효율을 나타내었다. In this investigation, phosphorus removal experiment was conducted in a single reactor combining anaerobic-aerobic-anoxic zone. Attempts have been made to delineate phosphorus removal mechanisms and to evaluate the removal efficiency. Also performed in this experiment are the removal characteristics of organic and phosphorus with different internal recycle ratios and varying SRT conditions. In addition, this study evaluates the best operation conditions in terms of phosphorus removal efficiency. The removal efficiencies of TOC, BOD and COD were observed to be higher than 95%, 90% and 90%, respectively with aerobic recycle ratios of 100% and 200%. If is further estimated that the optimal operational conditions for phosphorus removal are observed when the aerobic internal recycle rate is 100% with the wastewater inlet point being 0.2 from the bottom. The percent removal efficiencies are 92% for T-P and 90% for PO₄-P. In case of SRT, higher removal efficiencies are observed with the solid retention time of 10 days than with SRT's of 5 and 20 days. The removal rates observed are 94% for T-P and 92% for PO₄-P with the solid retention time of 10 days.