제주북부지역 적설량에 미치는 해양과 대기간 에너지수지 효과

한경훈,윤용훈,방익찬 제주대학교 해양과환경연구소 2005 해양과환경연구소 연구논문집 Vol.29 No.1

일반학습에서의 경도장애아의 사회적 수용도

변찬석,서경희 국립특수교육원 1998 특수교육연구 Vol.5 No.-

The Purpose of this study was to investigate the peer acceptance of mainstreamed students with mild disabilities in elementary schools. To assess peer acceptance, A sociometric scale was group-administrered to each student of participating 55 classes(grade 2-6). The peer status and peer acceptance of 459 nondisabled students and 55 disabled students were examined and compared. The relationship between teacher preference ratings of disabled students and sociometric ratings was explored. Compared to nondisabled students, more mainstreamed disabled students were rejected and isolated and fewer were popular. Disabled rejected students were more rejected and less acceptance of 459 nondisabled students and 55 disabled students were examined and compared. The relationship between teacher preference ratings of disabled students and sociometric ratings was explored Compared to nondisabled students, more mainstreamed disabled students were rejected and isolated and fewer were popuar. Disabled rejected students were more rejected and less accepted than nondisabled rejected students. Three quarters of disabled students were nominated as victims of bullying. Teacher preference scores for disabled students were not related to peer acceptance.

정전 용량형 RF Switch의 제작 및 동작특성

구찬규,장호경 慶山大學校 基礎科學硏究所 2003 基礎科學 Vol.7 No.1

본 연구에서는 정전 용량형 RF switch의 제작 및 동작특성에 대하여 연구하였다. 최근 MEMS 기술의 발달로 새로운 스위칭 알고리즘에 의해 micromechanical switch의 설계와 제작이 가능해졌다. micromechanical switch는 반도체 스위치들과 비교해 더 낮은 삽입손실, 극히 적은 전력소모, 좋은 절연성을 가진다. 제안된 스위치는 전기도금 기술, 낮은 온도 프로세스 및 wet etching 시스템을 사용해 제작되었다. membrane-type upper 전극 스위치는 구동 전압이 12V 일 때 20㎓에서 -218㏈의 삽입손실과 -2.1의 절연성을 가진다. 이와 같은 결과는 고주파 무선통신에 적용할 수 있음을 알 수 있으며, 정전 용량형 PF switch에 마이크로파의 적용도 가능 할 것으로 기대된다. This paper presents a CPW shunt RF Switch using MEMS. Recent development in MEMS technoloy has made possible the design and fabrication of micromechanical switches as new switching elements. The micromechanical switches have low insertion loss, negligible power consumption, good isolation compared to semiconducter switches. The proposed switches are fabricated using electropatling technique, low temperture process, and wet etching system. The switch with a membrane-type upper electrode has an insertion loss of -2.1㏈ at 25㎓ and an isolation -18㏈ at 25㎓ when active voltage of 12V is applied. In this process, micromachined capacitive switches for microwave applications are designed and fabricated to good isolation.

발달장애유아의 언어행동발달 연구

김춘희,변찬석,서경희,유은정,이효신,전헌선,최성규 大邱大學校 特殊敎育·再活科學硏究所 2000 特殊敎育硏究 Vol.23 No.1

본 논문은 발달장애유아 언어행동발달 컨텐츠 개발에 요구되는 기초연구로써 연구의 이론적 바탕을 확립하고자 하였다. 연구에 사용된 방법은 문헌조사 방법 및 현장 인터뷰기법을 병행하였다. 본 연구의 주된 목적은 크게 3가지로 구분된다. 첫째, 발달장애유아의 가정 내 교육 욕구를 분석하고자 하였다. 둘째, 발달장애유아의 언어발달 양상을 검토하고자 하였다. 세 번째 목적은 유아의 언어행동발달 컨텐츠 구성의 주요 지침을 설정하고자 하였다. 이상의 연구목적에 따른 연구결과를 요약하면 다음 몇 가지로 제시된다. 1.가정 내 부모-유아간 관계형성이 우선 고려 되어야하고, 이에 따른 상호작용은 발달적 애착형성이 가능한 방향으로 정립되어야한다. 2.발달장애유아의 언어행동발달양상을 검토한 결과에 따르면, Piaget는 언어행동발달에 있어 감각운동기적 환경탐색 기능을 강조하고 있고, 이는 현재까지 중요한 유아 발달의 기저로 정착되었다. 따라서, 발달장애유아의 언어행동발달을 위한 컨텐츠 개발 내용에 있어서도 이러한 기저에 충실함이 합리적이다. 3.발달장애유아들에게는 언어행동 양상의 갈래가 크게 운동장애 및 감각결함으로 나누어질 수 있으므로, 이 두 가지 갈래의 각기 다른 특성이 컨텐츠 구성에서 충분히 고려되어야한다. 4.자폐성과 같은 중증 전반적 발달장애 유아를 위한 언어행동발달 컨텐츠 구성에서 특히 고려해야 할 두 가지 요소는 모방행동기능과 반복단순훈련기능 향상으로 결론지을 수 있다. This article planed to establish the theoretical foundations of the research as a basic study needed for developing the contents of verbal(language) behavior development for the infants with developmental disabilities. The methods used in the study was previous literature researches and interviews with subjects. The purposes of the study were divided into three parts. First, it was to analyze the educational needs of the infants with developmental disabilities in home settings. Second, it was to review and discover the language patterns of the infants with developmental disabilities. The third purpose was to devise the major guidelines of their language development's contents. The results of the study were described as the followings. 1.The relationships between the infants with developmental disabilities and their parents and their interactions should move to build the developmental attachments between them. 2.According to the literature findings of their language development patterns, Piaget concentrated on the functions of sensory motor environmental exploring in the language behavior development. The functions have been settled down into the important foundation for the infants' development. Thus, it was resonable that the content's development of the language behaviors for the infants with developmental disabilities should based on the function addressed by Piaget. 3.The language behaviors' patterns of the infants with developmental disabilities generally were classified into motor disabilities and sensory defect(deficiency). Therefore, the two factors should be considered for the constructions of the contents. 4.Constructing the contents of the language behavior developments for the infants with severely pervasive developmental disabilities such as autism, the improvements of two functions, imitative behavior and repetitive simple training should be considered.

Interleukin-2와 결핵균 30 kDa 항원이 구개편도 및 말초혈액 T 세포 증식에 미치는 상승효과

박정규,박찬권,조은경,김화중,백태현,고필준,김병국,남부현,나기상,박찬일 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.1

Widespread use of BCG has not controlled tuberculosis, and more effective vaccines are clearly needed. Although chemotherapy will remain the mainstay of antituberculosis treatment, the use of adjunctive immunotherapeutic modalitites is attractive, particularly in persons with drug-resistant tuberculosis. Administration of IL-2 or IFN-γto tuberculosis patients enhance bacillary elimination. Cell-mediated immunity is the critical protective immune response in tuberculosis. Mycobacterial antigens are recognized by T cells and that elicit production of protective cytokines are potentially important vaccine antigens. The 30 kDa antigen is secreted in large quantities by growing mycobacteria. That antigen elicits greater proliferation in lymphocytes from healthy tuberculin reactors than healthy tuberculin nonreactors. In this study, the T lymphocyte proliferative responses to 30 kDa antigen from Mycobactrium tuberculosis H37Rv were examined by using tonsilar and peripheral blood lymphocytes from PPD(+) and PPD(-) tonsilectomized persons. When cultured with 30 kD antigen, tonsilar mononuclear leukocytes and T cells of PPD(+) demonstrated more ^3H-thymidine incorporation than PPD(-) persons (stimulation index was 2.5 and 1.9, 0.8 and 1.0, repectively). Peripheral blood mononuclear cells (PBMC) and peripheral blood T lymphocytes were shown the similar responses to this antigen. The combination of IL-2 and 30 kDa antigen elicited a significant proliferative responsiveness in tonsilar mononuclear leukocytes and T cells of PPD(+) persons (SI was 20 and 14.1). PBMC and peripheral blood T cells of PPD(+) persons were also shown a significant responsiveness, but PPD(-) persons did not show. These results demonstrate that the 30 kDa antigen and IL-2 have a synergistic stimulatory property in mycobacteria sensitizing lymphocytes.

컴퓨터 작업 시 의자 등받이 위치가 근육 활성도에 미치는 영향

김민우,변승진,이경은,정소영,조주영,최원자,최찬양,김경 대구대학교 특수교육재활과학연구소 2011 再活科學硏究 Vol.29 No.1

이 연구는 컴퓨터 작업시 의자 등받이 위치가 근육활성도에 미치는 영향을 알아보기 위해 36명의 근골격에 문제가 없는 성인 남녀가 참가하였으며 대상자들은 등받이가 뒤에 있는 의자와 등받이가 없는 의자, 등받이가 앞에 있는 우리들 의자를 무작위로 배정하고 동일한 컴퓨터 작업을 실시하게 하였다. 실험 중, 표면근전도기를 사용하여 의자에 따른 위등세모근, 머리널판근 그리고 척주세움근의 근활성도 변화를 측정하였다. 이 연구의 결과를 종합해보면 등받이가 앞에 있는 의자는 허리 근육의 부담을 줄이지만 목근육에 부담이 늘어나고 등받이가 뒤에 있는 의자와 없는 의자는 허리근육에는 다소 무리가 가지만 목근육에는 부담이 덜하다는 것을 알 수 있었다. 이러한 결과로 환자의 증상에 다라 컴퓨터 작업을 하는 동안 의자 등받이의 위치를 조절하여 치료에 도움이 될 수 있다고 생각되어진다. Objective : In this study, we checked and observed people's change of body muscle and muscle activity who do computer work on different chairs. We set three kind of chairs which one is a stool and another one is the back is fixed, and the other one is the back is fixed in front of chair. Subject : Accounting for 36 health men and women, we divided these people to 3 groups and put them on the three cases(position 1, position 2, position 3). We measured muscle activity of upper trapezius, Splenius Cervics, Erector Spinae from the groups by using surface electromyogram system. Methods : The standard of the electromyogram was 'reference voluntary contraction', and we carried out 'one way anova' to compare muscle activity of three groups. Results : In position 1, reference voluntary contraction of upper trapezius muscle activity was 123.2821%, Splenius Cervics was 141.7526%, and Erector Spinae was 254.5233%. In position 2, reference voluntary contraction of upper trapezius muscle activity was 132.9395%, Splenius Cervics was 141.7526%, and Erector Spinae was 246.6540%. In position 3, reference voluntary contraction of upper trapezius muscle activity was 190.6487%, Splenius Cervics was 270.2332%, and Erector Spinae was 182.1021%. Both upper trapezius and Splenius Cervics muscle activity of position 3 group was higher than the others groups. In position 1 group, Erector Spinae muscle activity was hight than the other groups. And either was position 2 group's(p<0.05). Conclusion : Therefore the chair which is the back is fixed in front is more comfortable for waist muscle but it's not good for neck. And the other chairs are better in waist muscle but not in neck muscle. So far, when we do a computer work, it's prefer to sit on the group 1&2's chairs to reduce neck muscle's stress and sit on group 3's chair to reduce waist muscle's stress.

A Design on Reduction Cogging Torque of Dual Generator Radial Flux Permanent Magnet Generator for Small Wind Turbine

Gyeong-Chan Lee,Tae-Uk Jung 대한전기학회 2013 Journal of Electrical Engineering & Technology Vol.8 No.6

In this paper, the design for an electromagnetic structure and reduction cogging torque of a dual generator structured RFPM generator, which is a combination of the inner- and outer-rotor types, has been proposed. We call this a dual generator radial flux permanent magnet generator. To reduce the cogging torque, firstly, stator tooth pairing was designed; secondly, stator displacement was designed and finally, stator tooth pairing and stator displacement were carried out simultaneously. We found the optimal design condition about stator tooth pairing angle combination and stator displacement angle for cogging torque minimization. As a result, a cogging was reduced by 93.3[%] by this study.

An Unusual Pseudo-Coordination Polymer of Dithia-18-Crown-6 with Heavy Metal

Gyeong-chan Kang,박인혁,이심성 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.11

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회전자의 영구자석 위치 이동을 이용한 이중 고정자 RFPM 발전기 코깅토크 저감 연구

이경찬(Gyeong-Chan Lee),정태욱(Tae-Uk Jung) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.4

In this paper, we propose the cogging toque reduction technique of the dual stator radial flux permanent magnet generator. The cogging toque is caused by the torque ripple increase and vibration and noise of the generator. And it is important factor determining cut-in speed of the small wind generator. To reduce cogging torque, permanent magnet displacement was studied. And the theory of the permanent magnet displacement was formulated and the cogging torque reduction according to the permanent magnet displacement was confirmed through the finite element method.

이중외피의 개구부 계획에 따른 환기 및 냉방에너지성능 평가

김경찬(Gyeong-Chan Kim),성욱주(Uk-Joo Sung),조수(Soo Cho),심경종(Gyeong-Jong Sim),이효진(Hyo-Jin Lee) 한국생활환경학회 2013 한국생활환경학회지 Vol.20 No.4

In this study, natural ventilation and energy performance of multi-stories type double skin facade(DSF) was evaluated according to its opening design. The objective of this study is to suggest design method for reducing cooling load of office building with DSF. Energyplus simulation with airflow network is conducted to analyze on thermal, airflow condition and indoor cooling load of each alternative. The validation of simulation baseline is referenced by the methods and results of previous study entitled ‘An Analysis on Method and Applicability for Invigorating Airflow in Intermediate Space of Double Skin Facade during Cooling Season.(Sung et al., 2012)’. Using the simulation baseline of the previous study, natural ventilation and indoor cooling energy performance is analyzed by air temperature and total pressure according to opening and wind direction at upper part of DSF. As results of this study, ALT2 applied top side opening reacts to outdoor wind direction flexibly, and shows excellent performance in terms of the natural ventilation(49.3% improvement compared to the Baseline) and the indoor cooling load(5.9% improvement compared to the Baseline).