n-CdS_(0.46)Se_(0.54)/p-Cu_92-x)S_(0.46)Se_(0.54) 이종접합 태양전지의 제작과 그 특성에 관한 연구

유상하,최승평,이상열,홍광준,서상석,김혜숙,전승룡,윤은희,문종대,신영진,정태수,신현길,김택성,유기수 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-

승화방법에 의해 CdS_0.46Se_0.54 단결정을 성장하여 결정구조를 조사하고, Van der Pauw 방법으로 Hall effect를 측정하여 carrier density의 온도 의존성과 mobility의 온도 의존성을 조사하였다. 성장된 CdS_0.46Se_0.54 단결정을 치환반응하여 n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 이종접합 태양전지를 제작하였다. Spectral response, 전류-전압특성 및 전력변환 효율을 조사하여 그 결과로부터 개방전압은 0.48V, 단락 전류 밀도는 21mA/㎠, fill factor와 전력변환효율은 각각 0.75와 9.5%를 얻었다. CdS_0.46Se_0.54 single crystal was grown by a sublimation method. The crystal structure and the temperature dependence of carrier density and mobility of CdS_0.46Se_0.54 single crystal were studied. Heterojunction solar cells on n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 were fabricated by the substitution reaction. The spectral response, the J-U characteristics and the conversion efficiency of the n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells were studied. The open-cricuit voltage, short-circuit density, fill factor and conversion efficiency of n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells under 80mW/㎠ illumination were found to be 0.48V, 21mA/㎠, 0.75 and 9.5%, respectively.

Weight Training과 Plyometric Training이 순발력 향상에 미치는 효과

유승희,박연길 경희대학교 체육과학연구소 2000 體育學論文集 Vol.28 No.-

The purpose of this study was to analyse the effect of the 8weeks' weight training and plyometric training upon the development of power ability. The subjects for this study consisted of 30 high school students. Two groups for this study were divided, one was weight training group (N=15), the other plyometirc training group(N=15). In the Weight training program the subjects practiced a total 5 resistance exercises with the 60% maximal muscular strength including 3 minutes rest. Plyometirc training program consisted of single foot side-to-side, tuck jump heel kick, 1-2-3 drill, standing long jump with sprint, single leg hop and depth jump to prescribed height ankle hop The test items for this study were 50m dash, vertical jump and standing long jump. The pre and post records of 3 test items were compared at the 5% significance test to evaluate the effect of two training programs. The results were as followings. 1.There was no significant difference in the 50m running between the weight training group and the plyometric training group. 2.There was significant difference in the vertical jump between the weight training group and the plyometric training group(p〈.05). Plyometic trianing group marked higher records than weight training group. 3.There was no significant difference in the standing long jump between the weight training group and the plyometric training group.

간호사의 이직의도 구조모형

김창희,양승순,김연자,손연정,유미애,송주은 대한간호학회 간호행정학회 2009 간호행정학회지 Vol.15 No.4

Purpose: The purpose of this study was to construct and test a structural equation model of nurses' turnover intention. Method: The participants were 716 nurses at 4 university hospitals. Data were collected by a self-report questionnaire in 2008 and analyzed using SPSS 12.0 and AMOS 4.0 Win program. Results: The fit indices of modified model were x²=285.928(p<.001),x²/df=1.958GFI=0.964, RMSEA=0.037, AGFI=0.944, NFI=0.947, NNFI=0.961, CFI=0.973, PNFI=0.658 and showed high compatibility with the empirical data. In the final model, job stress and satisfaction were found to have significant direct effects on nurses' turnover intention, while organizational culture and emotional labor were very important factors to have indirect effects on turnover intention via job stress and satisfaction. Nurses' turnover intention was accounted for 41.2% of covariance by these factors. Conclusions: Comprehensive nursing interventions for decreasing nurses' turnover intention should be focused on reducing job stress and increasing job satisfaction. Also, Nursing strategy for enhancing positive organizational culture and decreasing emotional labor would be helpful for decreasing nurses' turnover intention, too. Further studies are needed to prospectively conduct to verify these causal relationships with larger sample.

성찰적 실천의 관점에 비추어 본 수업설계자의 전문성 개발방안 탐색 : Focused Reflection in Action and on Action

이승희,유영만 한국교육정보방송학회 2002 교육정보미디어연구 Vol.8 No.2

수업설계는 역동적이고 복잡하면서도 고도의 전문성이 요구되는 지적 활동이다. 그러나 수업설계자의 전문성을 개발하는 전통적 방식은 기술적 합리성과 도구적 관심에 바탕을 두고 수업설계에 대한 개념적 지식과 스킬을 습득하는데 많은 비중을 두어왔다. 이러한 방식으로는 수업설계자가 수업설계 능력을 향상시키는 것이 쉽지 않다. 나아가 실천적 지침을 주지 못하는 수업설계 매뉴얼과 이를 기반으로 개발된 교육 프로그램은 현장의 교육요구를 해결하거나 수행문제 개선에 크게 기여하기 어렵다. 본 연구는 수업설계자의 핵심역량 중의 하나인 수업설계자의 능력을 향상시키는 기존의 방안에 한계가 있음을 지적하고, 성찰적 실천의 관점에서 기존의 문제점을 해결하는 방안을 모색해 보고자 하였다. 이를 위해 (1)실천적 지식구성, (2)상황구속성, (3)협력적 학습이라는 수업설계 활동의 본질과 수업설계에 대한 선행연구들을 토대로, 수업설계자의 전문성 개발의 원칙(실제성, 대화, 협력 및 다의적 의미구성)을 도출하였다. 또한, 성찰적 실천의 관점에 비추어 본 수업설계자의 전문성 개발 방안으로 학습 사이클 - (비)형상화된 문제상황 탐색, 문제상황 가시화, 문제해결을 위한 활동표현, 성찰적 실행 및 순환 반복적 개선-을 적용할 것을 제안하였다. Instructional designing activities can be said as the highly complicated but dynamic profession. The traditional ways of developing competencies for instructional designers have rooted from assumption of technical rationality and technical interest in which all the related process, knowledge and skills needed for designing instructional programs have been acquired followed by prescribed and systematic methods. Those assumptions have the tendency to lead a variety of learning programs in the real fields, therefore, have come to unfruitful training for activity, not training for impact. What matters most for instructional designers lies on the reflective thinking or reflective practice with which instructional designers or field practitioners can diversely understand problem situations and explore possible solutions to meet fields learning needs. The model of instructional systems designing activities for educating instructional designers should be come to an approach in the same manner. Instructional designing activities themselves should be redefined as knowledge constructing process, situation-specific activity as well as collaborative inquiry experiences with partner groups involved in a particular project. This paper suggests an alternative professional development for instructional designers in terms of reflective practice perspectives, and drew out some implications of five major learning principles and a feasible circular instructional designing process(exploring ill-structured problematic situation, visualizing problems, expressing problem solving activities, implementing keen observation and finally recursive revising).

소아환자에 있어서 외상방지를 위한 마우스가드의 치험례

김경희,김종수,유승훈 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.3

구강악안면 영역의 외상은 치아파절, 탈구, 골절, 연조직 손상을 일으킬 수 있으며, 뇌진탕의 원인이 되기도 한다. 미국과 일본에서는 contact sports일부에서 마우스가드의 장착이 의무화되어 있으나, 현재 한국에서는 운동 시 마우스가드의 장착을 거의 볼 수 없는 실정이다. 마우스가드는 크게 ready-made type과 custom-made type으로 나눌 수 있다. Ready made type의 마우스가드에는 형태가 일정하고 조정이 곤란한 stock mouthguard와 다소 조정이 가능한 mouth formed mouthguard가 있다 Custom-made type의 마우스가드는 적합성이 뛰어나며 정확한 교합, 하악위를 재현할 수 있다는 장점이 있다. 마우스가드는 입술과 구강연조직을 치아로부터 보호하고, 치아에 가해지는 충격을 분산시켜 파절이나 탈구가능성을 줄여준다. 또한, 악골의 골절과 변위를 방지하고 충격을 흡수한다. 성장기 아동의 경우 치아손상의 30% 정도가 스포츠나 레포츠에 의한 것이라는 보고가 있으며 이 경우 치아나 잇몸은 물론 성장 중인 치조골에 악영향을 주게 된다. 이 때 외상처치는 어려우며, 그 예후 또한 불명확하다. 따라서 성장기 아동의 마우스가드 장착은 외상 예방차원에서 중요하다. 이에 저자는 단국대학교 치과병원에 내원한 환아에게 ERKODEN^(?)사의 ERKOFORM-RVE를 이용한 흡입성형 마우스가드(vacuum type mouthguard)를 적용한 임상경험을 보고하는 바이다. Dentofacial trauma can result in tooth fracture, avulsion, facial bone fracture. The Unites states and Japan mandated the use of mouthguards for contact sports. But, Korean didn't. Mouthguards divided into ready-made type and custom-made type. Mouthguards protect the lips, intraoral soft tissues, teeth and provide the mandible with resilient support to prevent jaw fracture and dislocations. Sports-related accidents have been reported to be one of the most common causes of dentofacial trauma. Sports trauma of involving teeth with incomplete root formation cause long chair time, multiple visit, economic considerations, additional dental services. So, mouthguards can offer considerable protection against sports-related trauma.

소형환편기 자동화기술개발에 관한 연구

최세환,장승호,허유,박준희,권영하 경희대학교 산학협력기술연구원 1995 산학협력기술연구논문집 Vol.1 No.-

소형환편기의 자동화기술을 위해 편환을 이동시킬 수 있는 편침과 cam을 편환이송용 장치를 고안하였다. 위편기의 편환이송 mechanism을 해석하고 소형환편기의 물리적 모사를 통해 편침과 cam의 형상을 최적화하였다. 편환이송장치를 사용하여 편물에 다양한 조직을 편성할 수 있는 편기의 개발이 가능하도록 하였다. The latch needle and cam are newly designed and manufactured to transfer the loop for automation of small circular knitting machine. The loop transfer mechanism is analized by the simulation of needle motion on the V-bed flat knitting machine to which optimum designed cam is attached. This loop transfer mechanism can be applied to small circular knitting machine for automation and variable knitted structure.

Design and Implementation of Content Switching Network Processor and Scalable Switch Fabric

You-Sung Chang,Ju-Hwan Yi,Hun-Seung Oh,Seung-Wang Lee,Moo-Kyung Kang,Jung-Bum Chun,Jun-Hee Lee,Jin-Seok Kim,Sang-Ho Kim,Hee-Jae Jung,Il-Sung Hong,Yong-Hwan Kim,Yu-Sik Lee,Chong-Min Kyung 대한전자공학회 2003 Journal of semiconductor technology and science Vol.3 No.4

Design and Implementation of Content Switching Network Processor and Scalable Switch Fabric

Chang, You-Sung,Yi, Ju-Hwan,Oh, Hun-Seung,Lee, Seung-Wang,Kang, Moo-Kyung,Chun, Jung-Bum,Lee, Jun-Hee,Kim, Jin-Seok,Kim, Sang-Ho,Jung, Hee-Jae,Hong, Il-Sung,Kim, Yong-Hwan,Lee, Yu-Sik,Kyung, Chong-Min The Institute of Electronics and Information Engin 2003 Journal of semiconductor technology and science Vol.3 No.4

This paper proposes a network processor especially optimized for content switching. With 2Gbps port capability, it integrates packet processor cluster, content-based classification engine and traffic manager on a single chip. A switch fabric architecture is also designed for scale-up of the network processor's capability over hundreds gigabit bandwidth. Applied in real network systems, the network processor shows wire-speed network address translator (NAT) and content-based switching performance.

남성들의 생활 습관 및 화장품 구매행태에 관한 연구

유승희 ( Seung Hee You ),김주덕 ( Ju Duck Kim ) 한국미용학회 2009 한국미용학회지 Vol.15 No.3

This study analyzes the relationship between lifestyle and cosmetic purchasing habits, and its effects on their skin. It also evaluates the consumer awareness of male cosmetic products. In modern days, men who spend more time and effort for better looks or appearances, so-called grooming tribe are getting more attentions. Grooming is derived from the word grooming, which means to care for the appearance of or to make neat and trim, and it is a new word for the males who invest for fashion and beauty. The images of males in modern days have been changing with social changes. The male cosmetics market, whose principal body is the male population, has been greatly affected by these changes, and therefore, it is laying an eye on the changes. Cosmetic markets have been changing its gear towards to male cosmetics from saturated women`s cosmetics. It is due to increase in sales of male cosmetic products as there`s been increase in sales of functional cosmetic products for men. This study examines and evaluates the progress of male cosmetics market and has the purpose of providing (achieving) helpful resources for the growing male cosmetics markets through this study.

임신과 관련된 감염성 심내막염의 증례

차승희 ( Seung Hee Cha ),허걸 ( Kuol Hur ),조연경 ( Yeon Kyung Cho ),유승연 ( Seung Youn You ),류소라 ( So Ra Ryu ),박수현 ( Su Hyun Park ),최현아 ( Hyoun Ah Choi ),박정배 ( Jeong Bae Park ),궁미경 ( Mi Kyung Koong ),강인수 ( Inn 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.9

The heart disease during gestation complicates approximately 0.5-1.5% of pregnancies. The common cause of heart disease during gestation is acquired rheumatic valvular lesions and congenital heart defects. In contrast, infective endocarditis during pregna