http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 이응석 ( Eung Suk Lee ) (검색결과 78 건)
- 무료
- 기관 내 무료
- 유료
-
-
구성주의를 반영한 수학 수업이 학생의 지식 생성 수준 및 추론능력에 미치는 영향 -초등학교 4학년 분수를 중심으로-
이응석 ( Eung Suk Lee ),김진호 ( Jinho Kim ) 한국수학교육학회 2016 초등수학교육 Vol.19 No.1
The purpose of this research is to find the effects of learner-centered instruction based on constructivism (LCIC) on their knowledge generation level and reasoning ability. To look for them, after fraction units are re-planed for implementing LCIC, instructions using it provide students in a class. From the data, some conclusions can be drawn as follows: LCIC has more positive influence of students on recall ability, generation ability, and reasoning ability than tractional instruction method. With the data it can be said that the interaction exists between learners’ reasoning ability and generation level.
-
-
-
-
-
이응석(Eung Suk Lee),이승범(Seung Bum Lee),김기환(Gi Hwan Kim),민들레(Deul Le Min),박종범(Jong Bum Park),박민수(Min Su Park),진이림(E Lim Jin),김태성(Tae Sung Kim) 대한기계학회 2015 大韓機械學會論文集A Vol.39 No.2
대형 5축 문형공작기계는 Gantry가 bed를 따라 절삭, 급송 이송하면서 가공을 수행 한다. 가공을 수행하는 중에 발생하는 오차(Zig-Zag)원인으로써 1) 양쪽 X축 이송모터의 위치오차 제어차이 2) 양쪽 Column의 무게차이에 의해 발생하는 마찰력에 대한 오차 3) spindle 회전력에 따른 오차 3가지의 원인이 있다. 3가지 오차원인을 분석하여 문형공작기계성능을 향상시키기 위해 연구를 진행 하였다. 연구결과로는 첫 번째로 양쪽 Column이 동일한 무게를 갖는 Gantry 구조에서 한쪽 축의 무게를 변경함으로써 마찰력이 미치는 영향을 확인하였다. 두 번째로 우리는 스핀들 회전이 미치는 영향을 해석 및 실험하였다. 그리고 우리는 스핀들 회전이 Gantry이송에 미치는 영향을 확인하였다. A large five-axis gantry-type machine performs cutting operations by moving the gantry, along with a bed. During operation, there are three sources of position (zig-zag) errors: 1) the position difference between two control motors on the X axis, 2) friction difference from the different column weights, and 3) torque of the rotating spindle. This study improved the performance of a gantry-type machine by analyzing these three error sources. We changed the mass of a column in the gantry structure and measured the effect on the friction result. We also studied the spindle torque influences on the movement performance of the gantry in relation to the spindle rotation.
-
-
연구논문 : 생명과학 ; 프로페논 화합물의 배양 대식세포에서 NFκ-B활성화 억제를 통한 NO 및 TNF-α 생성억제
이응석 ( Eung Seok Lee ),주혜경 ( Hye Kyung Ju ),문태철 ( Tae Churl Moon ),이은경 ( Eun Kyung Lee ),장영동 ( Yurng Dong Jahng ),이승호 ( Sung Ho Lee ),손종근 ( Jong Keun Son ),백석환 ( Suk Hwan Baek ),장현욱 ( Hyeun Wook Chang 영남대학교 약품개발연구소 2004 영남대학교 약품개발연구소 연구업적집 Vol.14 No.-
-
녹내장에서 파장가변 빛간섭단층촬영을 이용한 황반부 신경절세포층의 진단력
이응석(Eung Suk Lee), 장지호(Jee Ho Chang), 박태관(Tae Kwan Park), 온영훈(Young Hoon Ohn), 박가희(Ka Hee Park) 대한안과학회 2016 대한안과학회지 Vol.57 No.6
Purpose: To evaluate diagnostic ability of macular ganglion cell complex (mGCC), macular ganglion cell inner plexiform layer (mGCIPL) measurements in glaucoma using swept source deep range imaging optical coherence tomography (DRI OCT-1, Topcon Co., Tokyo, Japan). Methods: From August of 2014 to July of 2015, 109 eyes of 109 subjects were assessed for the average thickness and sectional thickness of both mGCC and mGCIPL to determine whether there exists any significant difference among advanced stage glaucoma group, early stage glaucoma group and normal group in Swept source OCT. Comparisons were also made between the above measurements and circumpapillary retinal nerve fiber layer (cpRNFL) thickness measurements in their diagnostic accuracy, sensitivity, and specificity. Results: The diagnostic ability of mGCC based-mean thickness value (area under the curve [AUC] = 0.78/ 0.99) in detecting early stage glaucoma group as well as advanced stage group was not significantly different from that of cpRNFL thickness measurement. However, there was a significant difference in thickness between mGCIPL (AUC = 0.70) and cpRNFL in early stage glaucoma groups (p = 0.018). The sensitivities and specificities of mGCC were 0.95/0.97, and those of mGCIPL were 0.92/0.97, respectively. Conclusions: The two swept source OCT based methods measuring retinal ganglion cell layer thickness appeared to have a good diagnostic accuracy, high sensitivity and specificity in detecting glaucomatous eyes. Nevertheless, of the two methods, mGCC thickness measurement was more efficient in detecting early glaucomatous changes. J Korean Ophthalmol Soc 2016;57(6):941-950
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
