초·중등 수송 기술 교육 관련 연구 동향 분석

김성인(Sung-In Kim),윤지아(Ji-A Yoon) 대한공업교육학회 2022 대한공업교육학회지 Vol.47 No.3

이 연구의 목적은 초․중등 수송 기술 교육에 관련된 연구 논문을 수집 및 분석하여 연구 동향을 파악하고, 향후 연구가 필요한 분야와 방향을 제시하는 것이다. 이를 위해 ‘연구 시기’, ‘연구 대상’, ‘연구 주제’, ‘연구 방법’, ‘연구자 특성’ 의 5개 항목으로 관련 논문을 분석하였으며, 연구의 결과는 다음과 같다. 첫째, 수송 기술 교육 관련 연구는 2002년부터 2022년 2월까지 총 81편의 연구가 이루어졌는데, 이는 생명 기술이나 발명 등 다른 분야에 비해 연구물이 적은 편이다. 둘째, 수송 기술 교육 관련 연구는 주로 초·중·고등학생과 문헌을 대상으로 이루어졌으며, 교사 및 예비 교사를 대상으로 이루어진 연구는 부족한 편이다. 셋째, 수송 기술 교육 관련 연구의 주제는 교수·학습 자료 개발과 교육과정, 교과서가 대부분이었고 교육 평가, 시설 및 설비, 태도와 인식, 교육 철학에 대한 연구는 저조하였다. 교수·학습 자료 개발의 하위 주제를 살펴보면 육상 수송 기술과 신재생에너지에 관한 연구가 많았고 해상 수송 기술과 우주항공 수송 기술, 동력 기관에 관한 연구는 비교적 적은 편이었다. 넷째, 수송 기술 교육 관련 연구의 방법은 문헌 연구와 양적 연구가 대부분이었다. 혼합 연구가 수행된 논문도 일부 있었지만 질적 연구를 활용한 논문은 전무하였다. 다섯째, 수송 기술 교육 관련 연구는 단독 연구자에 의한 논문이 가장 많았으며 2인이 연구한 논문이 그 뒤를 이었다. 연구자는 관련학과 교수와 현직 교사가 대부분이었으며 연구소 소속은 매우 적었고 산업 현장의 전문가는 전무하였다. 이상의 연구 결과를 토대로 향후 초·중등 수송 기술 교육 연구에서는 연구 대상, 연구 주제, 연구 방법의 측면에서 다양성을 추구하여 수송 기술 교육의 개선을 도모해야 할 것이다. 또 급변하는 기술 발전을 반영하기 위해 산업 현장의 전문가, 교사, 교수 등 다양한 연구자가 함께 연구를 이어나갈 필요가 있을 것이다. 나아가 2022 개정 교육과정이 추후 확정되어 개정·고시되면 이 연구의 결과를 토대로 새로운 교육과정에서 수송 기술 교육 연구는 어떤 방향으로 이루어져야 할지 고민할 필요도 있을 것이다. This research is aimed at collecting and analyzing research papers on transportation technology education in elementary and secondary schools, to analyze research trends, and to present the fields that require research in the future and the directions of such researches. The results were as follows: First, a total of 81 researches on transportation technology education were conducted from 2002 to February 2022, which indicated that the outcomes were less than those in biotechnology, invention, and other fields. Second, the research on transportation technology education was carried out on both elementary, middle and high school students, and literature. Meanwhile, less research was conducted on teachers and pre-service teachers. Third, the research was fully conducted on the development of teaching and learning materials, curriculums, and textbooks as its theme, but was poorly conducted on educational evaluation, facility and equipment, attitude and perception, and educational philosophy. Fourth, the research extensively employed literature reviews and quantitative research. Some papers used mixed-method research; however, no paper utilized qualitative research. Fifth, in the research on transportation technology education, most papers were compiled solely by one researcher, and then followed by two researchers. Researchers engaged fully with the relevant department professors and in-service teachers. Based on the above results, more research on transportation technology education in elementary and secondary schools is needed to improve the education on transportation technology by enhancing diversity in the aspects of research subject, theme, and methods. To reflect rapid advances in technology, it is also necessary to continue conducting research along with various researchers, such as professionals in industrial sites, teachers, professors, etc.

각막굴절수술에서 웨이브프론트가이드와 웨이브프론트최적화 방식의 고위수차 및 시력의 비교

김성인,오정재,오태훈,박규홍,백남호,최진석,Sung In Kim,MD,Jeong Jae Oh,MD,Tae Hoon Oh,MD,Kyu Hong Pak,MD,Nam Ho Baek,MD,PhD,Jin Seok Choi,MD,PhD 대한안과학회 2014 대한안과학회지 Vol.55 No.4

Purpose: To compare higher-order aberrations (HOAs) and visual acuity after wavefront-guided and wavefront-optimized laser keratorefractive surgery. Methods: This retrospective study consisted of consecutive cases of eyes that underwent wavefront-guided (VISX S4 CustomVue<sup>®) or wavefront-optimized (WaveLight<sup>® EX500) laser assisted in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK). Preoperative and postoperative uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), manifest refraction spherical equivalent (MRSE), and preoperative and 3 month postoperative HOAs were compared. Results: There were no statistical differences in UCVA, BCVA, MRSE, or total HOAs in either the LASIK and PRK groups (all <em>p</em> > 0.05). Induced amount of spherical aberration (SA) was significantly lower in the wavefront-optimized LASIK and PRK than wavefront-guided LASIK and PRK. Conclusions: In laser keratorefractive surgery, wavefront-guided and wavefront-optimized platforms produced equivalent visual outcomes and no differences in total HOAs. However, the wavefront-optimized platform caused less spherical aberration 3 months after operation. J Korean Ophthalmol Soc 2014;55(4):480-485

복사 열전달을 고려한 고체 추진제의 비정상 연소 특성

김성인(Sung-In Kim),이창진(Changjin Lee),이성택(Sung-Taick Lee) 한국항공우주학회 1999 韓國航空宇宙學會誌 Vol.27 No.6

고분자 블렌등 및 연신조건이 리튬 이온전지용 습식 Separator 의 물성에 미치는 영향

문성인(Sung In Moon),손영수(Yong Soo Son),김순식(Soon Ik Kim),김진열(Jin Yeol Kim) 한국고분자학회 2002 폴리머 Vol.26 No.1

한국성인에서 S상결장경검사로 관찰된 대장 용종의 빈도와 특성

이화영(Hwa Young Lee),김재준(Jae Jun Kim),김영호(Young Ho Kim),성인경(In Kyung Sung),전성국(Seong Gook Jeon),손희정(Hee Jung Son),이풍렬(Poong Lyunl Rhee),고광철(Kwang Chul Koh),백승운(Seung Woon Paik),이종철(Jong Chul Rhee),오영륜(Y 대한내과학회 1998 대한내과학회지 Vol.55 No.1

N/A Objectives: Colorectal polyps play an integral role in the development of colon cancer. The prevalence of colorectal polyps in Korea was reported to be 5-12%. However, these results were obtained from retrospective studies, in which the subjects were symptomatic patients. Therefore, we performed a prospective study in asymptomatic Korean adults to determine the prevalence, characteristics, and risk factors of colorectal polyps. Methods Flexible sigmoidoscopy was done during the period between August 1994 to November 1995 in 2,985 aymptomatic individuals who visited Samsung Medical Center for health check-ups. Results : 1) Polyps were found in 590 subjects (20.4%) out of 2,985 individuals. The prevalence rate increased with age. 2) In histologic findings of colorectal polyps, there were 369 cases (45.8%) of adenomatous polyps, 245 cases (30.4%) of hyperplastic polyps and 5 cases of carcinomas. 3) Moderate to severe dysplasia was found in 15.4% of adenomatous polyps and the grade of dysplasia increased with polyp size. 4) The prevalence rate of polyps increased according to obesity, blood cholesterol and triglyceride level, the frequency of alcohol consumption and the amount of smoking in cases. Conclusions: Screening by sigmoidoscopy is considered to be beneficial for detection of colorectal polyps in asymptomatic Korean adults, especially in individuals with risk factors such as obesity, heavy smoking and alcohol consumption.

레스토; 다초점 인공수정체 삽입술 후 잔여굴절이상에 대한 레이저 굴절교정수술 효과

김성인,김숙진,오재윤,박규홍,강석재,Sung In Kim,MD,Suk Jin Kim,MD,Jae Yoon Oh,MD,Kyu Hong Pak,MD,Sug Jae Kang,MD 대한안과학회 2012 대한안과학회지 Vol.53 No.12

Purpose: To evaluate the clinical effects of excimer laser refractive surgery on eyes with residual refractive error after implantation of ReSTOR<sup>? multifocal intraocular lenses. Methods: We retrospectively reviewed the medical records of 10 eyes of 6 patients who had undergone cataract surgery with implantation of multifocal intraocular lenses. Photorefractive keratectomy (PRK) (5 eyes) and laser-assisted in situ keratomileusis (LASIK) (5 eyes) was performed on 10 eyes with residual refractive error. Results: After cataract surgery and before laser surgery, the mean spherical equivalent (SE) was -0.34 ± 0.89 D and the mean astigmatism was 2.08 ± 0.55 D. Six months after laser surgery, the mean SE was -0.33 ± 0.30 D (p = 0.354) and the mean astigmatism was 0.23 ± 0.28 D. The changes in astigmatism between paired preoperative and postoperative values were statistically significant (p < 0.0001). At 6 months after surgery, uncorrected distance visual acuity significantly improved to 0.11 ± 0.10 (log MAR) (p < 0.0001) There were no significant changes in the best corrected distance visual acuity and uncorrected near visual acuity (p = 0.073, p = 0.100). Conclusions: On the basis of predictability and stability, excimer laser surgery appears to be a clinically useful procedure to correct residual refractive error after implantation of ReSTOR<sup>? multifocal intraocular lenses.

3차원 재생 냉각 시스템의 축대칭 열해석

김성인(Sung In Kim),박승오(Seung O Park) 한국추진공학회 2006 한국추진공학회지 Vol.10 No.2

담도 폐쇄로 인한 담도염 환자에 있어서의 담즙 내 세균에 대한 연구

성인경(In Kyung Sung),이규택(Kyu Taek Lee),이종균(Jong Kyun Lee),김영호(Young Ho Kim),이석호(Seok Ho Lee),송희정(Hee Jung Son),이준혁(Joon Hyoek Lee),이풍렬(Poong Lyunl Rhee),김재준(Jae Jun Kim),고광철(Kwang Chul Koh),백승운(Seung Wo 대한내과학회 1998 대한내과학회지 Vol.55 No.1

N/A has been focused on the Enterococcus due to increasing in incidence of nosocomial infection and resistance to broad range of antimicrobial agents of this organism The purpose of this study was to analyse the bacteriologic features of bile in patients with cholangitis. Methods : Bacteriological examination was made of bile from 356 patients with cholangitis due to biliary tract obstruction, 105 of them with common bile duct stone and 251 of them with malignant disease. Bile specimens were taken during percutaneous transhepatic biliary drainage of endoscopic nasobiliary drainage. The specimens were cultured aerobically and anaerobically and then the anti- biotic sensitivity test was done. Results: The overall positive culture rates was 81.4%. There was significant difference in positive culture rates between the patients with common bile duct stone and the patients with malignant disease,(88.5% vs 78.4%, p<0.05) But there was no significant difference in bacteriological features between the patients with common bile duct stone and the patients with malignant disease. The commonly isolated organisms were Enterococcus (21.6%), E.coli(19.7%), and Klebsiella(17.2%) respectively. The isolation rate of anaerobes were only 2%. The rate of polymicrobial infection was 78.1%. The rates of 3rd cephalosporins-resistant Klebsiella were over 30%. The rate of ampicillin-resistant Enterococcus was 35%. The rate of gentamicin-resistant Enterococcus was 28%. Conclusion : This study shows that 1) many micro- organisms have resistance to a broad range of antimicrobial agents, and 2) the antibiotic coverage against Enterococcus should be considered for the treatment of cholangitis due to the increasing tendency to Enterococcus infection.

조직면역효소 염색법의 기본 원리에 대한 고찰

김성인 ( Sung In Kim ),김흥철 ( Heung Chul Kim ),오근영 ( Keung Young Oh ) 대한임상검사과학회 1987 대한임상검사과학회지(KJCLS) Vol.19 No.1

초음속 충돌 제트에 대한 비정상 유동 해석

김성인(Sung-In Kim),박승오(Seung O Park),홍승규(Seung Kyu Hong) 한국전산유체공학회 2002 한국전산유체공학회 학술대회논문집 Vol.2002 No.-

TNumerical simulations of the supersonic impinging jet flows are carried out using the 3D Navier-Stokes code. This paper is focuses on the unsteady flow features associated with stagnation hubbies and other oscillatory behavior. The 3D code was validated by reproducing the results of Lamont's experiments. Computation is carried out for the cases in which the unsteadiness of the plate shock has been observed experimentally. The computational results confirm the oscillatory feature in several ㎑. Unsteady calculation with algebraic turbulence model is also performed. It is found that the laminar and turbulent results have some discrepancy in the transient period. However, hath of them reveal the oscillatory behavior with similar frequency.<br/>