역률 개선 장치를 이용한 마이크로프로세서의 교육적 활용방안

정태선,장석구,심재명 大田産業大學校 2002 한밭대학교 논문집 Vol.19 No.-

As increasing the power demands, we can take the advantage in reduction of power loss, voltage drop, loss of transformers and distribution line, while we use reasonably the energy which is limited by the insufficient supply of energy resources and the high power rates. So industrial field is increasing the facilities of capacitor bank for active power and the reduction of the power loss. This paper improve the working domain by searching the optimal value of Xc in load circuit, as detecting different between voltage phase and current phase which is supplied to load by using PT and CT. Also, this paper can aid learners understand easy Power factor measurement and improving method by using phase relation between voltage and current, compose method of capacitor bank, and processor on the educational field.

“88만원 세대 · 비정규직에겐 너무 부러운 당신” 정책대안 제시하는 한국노총 역할 기대

정태선 한국노동조합총연맹 2010 월간 한국노총 Vol.2010 No.5

XML 데이타를 위한 객체지향 데이타베이스 스키마 및 질의 처리

정태선,박상원,한상영,김형주 한국정보과학회 2002 정보과학회논문지 : 데이타베이스 Vol. No.

As XML has become an emerging standard for information exchange on the World Wide Web it has gained attention in database communities to extract information from XML seen as a database model. Recently, many researchers have addressed the problem of storing XML data and processing XML queries using traditional database engines. Here, most of them have used relational database systems. In this paper, we show that OODBSs can be another solution. Our technique generates an OODB schema from DTDs and processes XML queries. Especially, we show that the semi-structural part of XML data can be represented by the `inheritance' and that this can be used to improve query processing. XML이 웹상에서 정보 교환의 표준으로 채택되면서 XML을 데이타베이스의 데이타로 보고 정보를 추출하는 분야가 주목받고 있다. 특히 최근에는 기존의 DBMS 시스템에 XML 데이타를 저장하여 기존의 DB 엔진으로 XML 질의를 처리하는 분야가 많이 연구되고 있다. 이때 주로 관계형 DBMS를 사용하는 연구가 많이 시도되고 있다. 본 연구에서는 객체 지향 데이타베이스 시스템이 XML 데이타를 저장하고 질의를 처리하는 또 하나의 해법이 될 수 있음을 보인다. 제안하는 방법은 XML의 DTD로부터 OODB의 클래스를 생성하고 이 클래스에 대하여 XML 질의를 수행한다. 특히, XML 데이타의 비정형적인 성질이 OO 모델의 계승(inheritance)을 이용하여 표현되어 질의 처리시에 유용하게 사용될 수 있음을 보인다.

간헐외사시에서 단안 내직근절제 및 외직근후전술의 수술성공인자

정태선,유인천,박상우,박영걸,Tae Sun Jeong,In Cheon You,Sang Woo Park,Yeoung Geol Park 대한안과학회 2006 대한안과학회지 Vol.47 No.12

Purpose: To investigate the factors associated with surgical success in cases of unilateral medial rectus resection and lateral rectus recession in the intermittent exotropia. Methods: Ninety-eight patients with basic-type intermittent exotropia were included in this study. They underwent unilateral recession of the lateral rectus and resection of the medial rectus muscle and were followed postoperatively for at least one year. Surgical results were analyzed to assess the association with preoperative factors, including the angle of deviation, difference of deviation between near and far, stereoacuity at far using B-VAT?, and Worth 4 dot test (W4DT) at near, and postoperative factors, including the position at near and far at one week, stereoacuity at far using B-VAT? at one year, and W4DT at near and far. Surgical success was defined as esotropia within 5 prism diopters (PD) at near and far or within 10PD at near and far at one year postoperatively. Results: Patients with a preoperative difference of deviation between near and far within 5PD had a better surgical outcome than patients with 6~10PD (p=0.03). There was a statistically significant relationship between position at one week postoperatively (especially esotropia or orthotropia at near and far) and success ratio (p<0.05). Other factors were not statistically related to surgical success (p>0.05). Conclusions: The difference of preoperative deviation between near and far within 5PD and within 5PD esotropia and orthotropia at near and far at one week postoperatively were significantly associated with a good surgical outcome and could be good prognostic indicators.

각막이식 삼중수술의 임상적 결과와 이식실패의 위험인자

정태선,문형진,유인천,윤경철,Tae Sun Jeong,Hyung Jin Moon,In Chon You,Kyung Chul Yoon 대한안과학회 2007 대한안과학회지 Vol.48 No.12

Purpose: To evaluate the clinical results of corneal triple procedure, as well as the causes and the risk factors for graft failure. Methods: Indications, survival period of graft, causes of graft failure, and risk factors for failure in 29 patients (29 eyes) who had undergone penetrating keratoplasty combined with cataract surgery and intraocular lens (IOL) implantation were retrospectively analyzed. Results: The most common primary indication of corneal triple procedure was bacterial keratitis (24%), followed by corneal trauma, herpes simplex keratitis, and graft failure. The average survival period of corneal graft in corneal triple procedure was 29.2±23.2 months. The most common cause of graft failure was allograft rejection (56.3%). The risk factors of graft failure by an univariate analysis were preoperative unfavorable diagnosis (bullous keratopathy, corneal ulcer, and trauma), corneal neovasculization, intraoperative additional procedure (anterior vitrectomy, synechiolysis, and anterior chamber irrigation), immune rejection, and postoperative glaucoma, but were unrelated to methods of cataract surgery, graft size, or IOL position. In a multivariate analysis, graft rejection and corneal neovascularization were identified as risk factors for graft failure in patients undergoing triple procedure. Conclusions: Corneal graft in corneal triple procedure had various success rates according to the many factors. Risk factors for graft failure included graft rejection and corneal neovascularization.

문학교육-황순원의 '소나기'수업 모형 개발과 적용

정태선,김진숙 덕성여자대학교 교육대학원 부설 열린교육연구소 1999 열린교육실행연구 Vol.- No.2

프렉탈 차원을 사용한 영상 압축 ( Image Compression with Fractal Dimension )

정태선,강종오,주우석 한국통신학회 1996 한국통신학회 학술대회논문집 Vol.15 No.1

총체적 언어교육

정태선 초등교육학회 1999 初等敎育學硏究 Vol.7 No.1

비일치성 사시에서 후봉합술의 수술적 효과

정태선,박상우,박영걸,Tae Sun Jeong,M,D,Sang Woo Park,M,D,Yeoung Geol Park,M,D 대한안과학회 2007 대한안과학회지 Vol.48 No.5

Purpose: To know the surgical effect and the indication of posterior fixation suture in incomitant strabismus. Methods: From January 2003 to October 2004, posterior fixation sutures were used in five patients with strabismus after orbital wall fracture and in three patients with high AC/A accommodative esotropia. Using Worth 4-dot tests, we compared the amount of incomitant deviation before and after surgery. Results: The mean decrease in deviation after surgery was 7.8±2.6PD(P=0.04) in patients with strabismus after orbital wall fracture, and 11.3±4.2PD in those with high AC/A ratio accomodative esotropia. Conclusions: The posterior fixation suture was effective in reducing the amount of incomitant deviation occurring in cases of strabismus after orbital wall fracture and cases of high AC/A accommodative esotropia.

XML 데이타를 위한 객체지향 데이터베이스 스키마 및 질의 처리

정태선,박상원,한상영,김형주,Jeong, Tae-Seon,Park, Sang-Won,Han, Sang-Yeong,Kim, Hyeong-Ju 한국정보과학회 2002 정보과학회논문지 : 데이타베이스 Vol.29 No.2

As XML has become an emerging standard for information exchange on the World Wide Web it has gained attention in database communities to extract information from XML seen as a database model. Recently, many researchers have addressed the problem of storing XML data and processing XML queries using traditional database engines. Here, most of them have used relational database systems. In this paper, we show that OODBSs can be another solution. Our technique generates an OODB schema from DTDs and processes XML queries, Especially, we show that the semi-structural part of XML data can be represented by the 'inheritance' and that this can be used to improve query processing. XML이 웹상에서 정보 교환의 표준으로 채택되면서 XML을 데이타베이스의 데이타로 보고 정보를 추출하는 분야가 주목받고 있다. 특히 최근에는 기존의 DBMS 시스템에 XML 데이타를 저장하여 기존의 DB 엔진으로 XML 질의를 처리하는 분야가 많이 연구되고 있다. 이때 주로 관계형 DBMS를 사용하는 연구가 많이 시도되고 있다. 본 연구에서는 객체 지향 데이타베이스 시스템이 XML 데이타를 저장하고 질의를 처리하는 또 하나의 해법이 될 수 있음을 보인다. 제안하는 방법은 XML의 DTD로부터 OODB의 클래스를 생성하고 이 클래스에 대하여 XML 질의를 수행한다. 특히, XML 데이타의 비정형적인 성질이 OO 모델의 계승(inheritance)을 이용하여 표현되어 질의 처리시에 유용하게 사용될 수 있음을 보인다.