섬유주절제술에서 결막편에 따른 여과포 형태 비교

이병희,최원석,이종욱,이규원,Byeong Hee Lee,Won Suk Choi,Jong Wook Lee,Kyoo Won Lee 대한안과학회 2011 대한안과학회지 Vol.52 No.12

Purpose: To compare the bleb morphology and surgical outcomes of a limbus-based group with those of a fornix-based group who underwent trabeculectomy with mitomycin C (MMC). Methods: Sixty-five eyes of 59 patients who had undergone trabeculectomy with MMC and who were observed for one year or more were included in the present study. A limbus-based conjunctival flap was used for 34 eyes of 31 patients and a fornix-based conjunctival flap for the other 31 eyes of 28 patients. The bleb morphologies were classified and compared after one year or more postoperatively according to the Moorfield Bleb Grading System, and intraocular pressure and success rates were evaluated. Results: The central bleb vascularity of the limbus-based group was statistically significantly lower than that of the fornix- based group (1.79 ± 0.64; 2.16 ± 0.73, p = 0.042). The risk of cystic bleb formation was higher in the limbus-based group (38.2%; 16.5%, p = 0.047). There were no differences in the IOP or success rate between the two groups. Conclusions: There were no differences between the two groups with regard to the IOP or cumulative success rate. However, in the fornix-based group, the central bleb vascularity was lower and the risk of avascular cystic bleb formation was higher than those in the limbus-based group. J Korean Ophthalmol Soc 2011;52(12):1461-1469

40 프리즘디옵터 이상의 외사시에서 수술 전 예측한 수술 후 사시각의 정확성

이병희,이종욱,이정호,오동렬,이규원,권정윤,Byeong Hee Lee,MD,Jong Wook Lee,MD,Jung Ho Lee,MD,Dong Ryeul Oh,MD,Kyoo Won Lee,MD,Jung Yoon Kwon,MD 대한안과학회 2010 대한안과학회지 Vol.51 No.12

Purpose: To assess the accuracy of estimating postoperative deviation in large-angle exotropia over 40 prism diopters (PD). Methods: A retrospective analysis was performed on 61 exotropia patients with over 40 PD exotropia who had undergone 2-muscle surgery by two surgeons and with at least 6 months follow-up. The accuracy was assessed by analyzing the discrepancy between preoperatively predicted residual deviation and deviation at postoperative 6weeks. Successful surgery was defined as deviation within ± 10 PD at the last postoperative visit. Results: More accurate residual deviation was predicted in exotropia with prism diopters between 40 and 59 (97.8%) than in exotropia with 60 PD or more (62.5%). And there was no significant difference between two surgeons. Surgical success rates at six months and one year after surgery were 96.8%, 94.7% in exotropia with 40 to 49 PD, 71.4%, 60.0%, 50 to 59 PD, 50.0%, 45.5%, 60 PD or more, respectively. There were four patients of whom the postoperative deviation angle exceeded more than 10 PD of the estimated deviation. Conclusions: The accuracy of estimating residual deviation prior to surgery was higher and more successful surgery was achieved in exotropia ranging in 40 to 59 PD than in exotropia with 60 PD or more. Therefore, 2- muscle surgery will be suitable for large-angle exotropia with less than 60 PD. J Korean Ophthalmol Soc 2010;51(12):1614-1619

양쪽머리 군날개의 수술적 치료에 대한 임상연구

이병희,이광자,박영정,이규원.Byeong Hee Lee. MD. Gwang Ja Lee. MD. Young Jeung Park. MD. Kyoo Won Lee. MD 대한안과학회 2010 대한안과학회지 Vol.51 No.5

Purpose: To evaluate two surgical methods-amniotic membrane transplantation (AMT) and split-conjunctival grafts (SCG)-for double-head pterygium, with regard to the postoperative outcome and recurrence rate. Methods: In a total of 16 eyes (14 patients), 7 eyes (6 patients) receiving amniotic membrane transplantation and 9 eyes (8 patients) receiving split-conjunctival grafts were compared to evaluate recurrence and complications. Results: Within the amniotic membrane transplantation group, two eyes (29%) had corneal recurrence, and 3 eyes (43%) had conjunctival recurrence. The mean follow-up period was 21.9±3.5 months, and all recurrences were on the nasal side. The average period preceding the corneal recurrences was 7.2±1.8 months. Within the split-conjunctival grafts group, the mean follow- up was 13.6±2.1 months, and neither the corneal nor conjunctival recurrences were observed. In addition, the eyes of this group were more aesthetically stable, with only one eye exhibiting pseudo-pterygium at the donor site. Conclusions: In cases of double-head pterygium without contraindication of conjunctival autograft, the split-conjunctival grafts produced fewer recurrences and showed enhanced cosmetic results, as compared to the amniotic membrane transplantation, indicating that the split-conjunctival grafts is the superior choice over amniotic membrane transplantation. J Korean Ophthalmol Soc 2010;51(5):642-650

공막연화증에 대하여 조직접합제를 이용한 동종공막이식술과 양막이식술의 임상성적

이병희,문홍재,박영정,이규원,Byeong Hee Lee,MD,Hong Jae Mun,MD,Young Jeung Park,MD,Kyoo Won Lee,MD 대한안과학회 2010 대한안과학회지 Vol.51 No.4

Purpose: To examine the effects, complications, and safeties of sclera allograft and amniotic membrane transplantation with fibrin glue as surgical treatment methods for scleromalacia. Methods: The study included 14 eyes of 14 scleromalacia patients who needed surgical treatment. Among them, seven eyes of seven patients whose scleral defect was small (<6 mm) were operated on using only fibrin glue and no suturing, while seven eyes of seven patients whose defect was large (>6 mm) were operated on using fibrin glue and minimum suturing. Amniotic membrane transplantation was performed at the site of the conjunctival defect. Results: In all of the cases, the results of grafting were successful throughout the follow-up period, which was 14.6±4.4 months, on average (ranging from 12 to 27 months). No particular complication was observed during the follow-up period after using fibrin glue. Conclusions: For scleromalacia patients, sclera allograft and amniotic membrane transplantation were performed using fibrin glue. The grafted sclera survived successfully, allowing this treatment modality to be considered an effective and safe option without complications. J Korean Ophthalmol Soc 2010;51(4):485-491

기니픽, 마우스 그리고 랫드에서 Intralipidos의 항원성

이병희,제정환,이광훈,강병철,이원우,임종희,정지윤,이영순,Yi, Beoung-Hi,Che, Jeong-Hwan,Li, Guang-Xun,Kang, Byeong-Cheol,Lee, Won-Woo,Ihm, Jong-Hee,Jung, Ji-Youn,Lee, Yong-Soon 한국독성학회 1998 Toxicological Research Vol.14 No.3

The antigenicity of intralipidos was investigated in guinea pig, mice and rats. Antigenicity tests-active systemic anaphylaxis (ASA), passive systemic anaphylaxis (PSA), passive cutaneous anaphylaxix (PCA) of this materials were performed. The results were followed: 1. After sensitizaion with YPL, YPL+intralipidos, and intralipidos, emulsified with complete Freund's adjuvant (CFA), guinea pigs didn's show any anaphylatic shock symptom in the ASA test, 2. These materials didn't show any anaphylatic shock symptom in the PSA test, 3. After sensitization with antisera of YPL, YPL+intralipidos, and intralipidos sensitized mice, blue spots were not observed on the hypodermis of back of rats in the PCA test. From the results of this investigation, the antigenicity of YPL, intralipidos was negative under the present experimental condition.

오프라인 인쇄체 문장부호 , 일본 문자 , 영문자 , 한자 인식에서의 오인식 문자 교정에 관한 연구

이병희(Lee Byeong Hee),김태균(Kim Tae Kyun) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.1

In the recent years number of commercial off-line character recognition systems have been appeared in the Korean market. This paper describes a "self-organizing" data structure for representing a large dictionary which can be searched in real time and uses a practical amount of memory, and presents a study on the character correction for off-line printed sentence marks, Japanese, English, and Chinese character recognition. Self-organizing algorithm can be recommended as particularly appropriate when we have reasons to suspect that the accessing probabilities for individual words will change with time and theme. The wrongly recognized characters generated by OCR systems are collected and analyzed. Error types of English characters are reclassified and 0.5% errors are corrected using an English character confusion table with a self-organizing dictionary containing 25,145 English words. And also error types Chinese characters are classified and 6.1% errors are corrected using a Chinese character confusion table with a self-organizing dictionary carrying 34,593 Chinese words.

금속 핀으로 보강된 복합재 단일겹침 체결부의 강도 연구

이병희 ( Byeong Hee Lee ),박용빈 ( Yong Bin Park ),권진희 ( Jin Hwe Kweon ),최진호 ( Jin Ho Choi ),최익현 ( Ik Hyeon Choi ),장성태 ( Sung Tae Chang ) 한국복합재료학회 2012 Composites research Vol.25 No.3

The main objective of this study is to investigate the effect of metal z-pinning on the failure behavior of cocured composite single-lap joints. Three different pin diameters (0.3, 0.5, and 0.7 mm) and three pin areal densities (0.5, 2.0, and 4.0%) were examined. The specimens were fabricated by T700-12K-31E#2510 unidirectional prepreg from Toray. Stainless steel pins were used for z-pinning. Test results showed that except one case with extremely low pin density of 0.5%, all other z-pinned joints exhibited lower initial crack stresses than those of the unpinned joint. However the ultimate strength of the z-pinned joint increased up to 45% at most. Furthermore, even after the complete failure of the joint, the z-pins sustained the carried load to a certain degree experiencing large deformation and provided the stable fracture behavior for the composite joint.

오프라인 한글 문자 인식을 위한 효율적인 오인식 단어 교정 방법

이병희(Lee Byeong Hee),김태균(Kim Tae Kyun) 한국정보처리학회 1996 정보처리학회논문지 Vol.3 No.6

In order to achieve high accuracy of off-line character recognotion(OCR) systems, the recognized text must be processed through a post-processing stage using contextual information. In this paper, we reclassify Korean word classes in terms of OCR word correction. And we collect combinations of Korean particles(approcimately 900) and Korean verbal forms(around 800). We aggregate 9 Korean irregular verbal phrases defined from a Korean linguistic point of view. Using these Korean word information and a Head-tail method, we can correct misrecognized words. A Korean character recognizer demonstrates 93.7% correct character recognition without a post-processing stage. The entire recognition rate of our system with a post-processing stage exceeds 97% correct character recognition.

플립드 러닝(Flipped Learning)을 활용한 과학수업이 과학 학업성취도와 과학적 태도에 미치는 효과

이병희 ( Byeong Hee Lee ),이형철 ( Hyeong Cheol Lee ) 한국초등과학교육학회 2016 초등과학교육 Vol.35 No.1

The purpose of this study was to examine the effects of science lesson with the application of Flipped Learning on science academic achievement and scientific attitude of students. The experimental group was composed of 50 students and the comparative group was composed of 50, both in 6th grade. The two groups were statistically equivalent in their science academic achievement and scientific attitude when pre-tests were conducted. The experimental group received science instruction applied with Flipped Learning and the comparative group took typical science lesson according to a teacher`s guide. The results of this study can be summarized as follows: First, the science lesson with the application of Flipped Learning was more significantly effective in improving students` science academic achievement than traditional science lesson. Second, the science lesson combined with Flipped Learning enhanced scientific attitudes of students with meaningful difference more than typical science lesson. Third, a survey research was conducted to the experimental group about their cognition on the lessons with the application of Flipped Learning. Many students had positive thoughts on this lesson and they thought the lesson was very interesting and understandable.

과학기술 전문용어를 위한 정제 말뭉치 워크벤치 개발

이병희 ( Byeong-hee Lee ),정휘웅 ( Hwi-woong Jeong ),정한민 ( Hanmin Jung ),성원경 ( Won-kyung Sung ) 한국정보처리학회 2005 한국정보처리학회 학술대회논문집 Vol.12 No.2

본 논문에서는 효과적으로 문서를 정제할 수 있는 작업환경인 웹 기반의 정제 말뭉치 워크벤치 개발에 관하여 기술한다. 또한 정보검색의 효율성 향상, 전문용어의 자동추출, 전문용어가 쓰인 문맥의 파악 등을 위하여 정제된 문서에 포함된 과학기술 전문용어를 표시할 수 있게 하는 작업환경도 구축하였다. 이렇게 개발된 정제 말뭉치 워크벤치와 전문용어 태깅 툴을 이용하여 과학기술과 관련된 신문 기사에서 한국어 전문용어를 태깅하고, 논문의 제목과 초록에서 한영 전문용어쌍을 태깅하는 작업을 진행하였다.