신경회로망을 이용한 정현파 밴드 히스테리시스 전류 제어기

元忠淵,梁承浩,金世燦,金學成 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.1

Current-controlled PWM inverter offers substantial advantages in improving motor system dynamics in high-performance ac drive systems under vector control. Among the various current control techniques, fixed band hysteresis current control has been widely used. A hysteresis controller employing sinusoidal bands has been reported in recent years. In this paper new current control schemes based on neural network for PWM inverter are described, Four types of controllers have been studied and their performance compared with each other. Finally, relevant simulation results are shown to prove the effectivness of the proposed current control scheme.

생쥐 중이와 상기도 점막의 섬모세포운동

정하원,오승하,유원석,이강수,모지훈,전상준,김인상,김종선 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.9

피부 스포로트리쿰증에서 Itraconazole 경구 투여의 효과에 대한 관찰

원영호,전선도,김성진,이승철 대한의진균학회 1998 대한의진균학회지 Vol.3 No.2

Background: The effectiveness of some therapeutic modalities for cutaneous sporotrichosis may be changed depending on the individual and geographic characteristics, and the clinical type. Itraconazole has been known to be effective for it, however, there have been no standard and ideal guideline on the oral dosage and duration yet. Objective 8: Methods: In this study, we evaluated the effectiveness of oral itraconazole in patients with cutaneous sporotrichosis in relation to dosage and clinical status. The observation of 17 patients with sporotrichosis were made retrospectively, Oral itraconazole was administered at the dose of 200 mg daily in 15 adults over 18 years old and 100 mg in the other 2 children. Results: The duration for healing was within 30 days in 4 cases, within 60 days in 4 cases, within 90 days in 2 cases, within 120 days in 3 cases, and within 150 days of therapy in 2 cases. The average duration in all cases was 12.1 ± 8.6 weeks. Comparison our results to the previous reported one revealed that more shorter treatment time was needed in cases treated with 200 mg daily than that with 100 mg. There was no treatment failure by drug intolerance or resistance. The duration for healing was significantly shorter in the patient groups with prevalence duration more than 5 months, however there was not any significant difference in sex of patients, and the clinical types. The cases with the lesion on the face and cases with fixed type tended to be healed more rapidly than the others, Conclusion: Oral itraconazole may be a safe and effective antifungal agent for the treatment of cutaneous sporotrichosis in a daily dose of 200 mg for 3 months on the average. However, duration for healing could be influenced by the clinical status.

대학 신입생들의 구강상태 인식도와 상대구강진료필요도에 관한 상관관계 조사연구

원상연,신승철,김선영 단국대학교 치과대학 예방치과 1997 예방치과 세미나집 Vol.- No.11

The purpose of this study was to determine the correlation between the awareness and the status of their won oral diseases. A questionnaire survey form was designed to determine the awareness of their won oral diseases and asked aoo of the university freshmen students to fill out the all of questionaries. They were then immediately examined for을 새 determine their status of dental hard tissures by using the WHO criteria. Also determined were the CPITN and the needs for orthodontic as well as prosthodontic treatments. The results were then statistically analyzed to determine the correlation coefficiencies between the awareness and the status of oral diseases by using SPSS statistical package. The results suggested the followings; 1. The correlation coefficiencies between the awareness and the status for number of teeth decayed, missed, and indicated for extractions were 0.18, 0.06 and 0.09 respectively. 2. The correlation coefficiency between the awareness and the status in treated teeth(F component) and CPITN were 0.622 and 0.10 respectively. 3. the agreement between examiners and examinees on the needs for prosthodontic treatments was 87.31% and their sensitivity and specificity were 47.54% and 88.55% respectively. 4. the agreement between examiners and examinees on the needs for orthodontic treatment was 70.40% and their sensitivity and specificity were 77.27% and 60.71% respectively. Data indicate that a majority of respondents are lacking in the awareness of their own oral disease status. Therefore, it is concluded that a regular oral examination, a regular counselling on oral health status as well as specific oral health education for each individual warranted.

부정극성항목 : 함축과 함의

원성옥,정승영 현대영미어문학회 2000 현대영미어문학 Vol.18 No.1

The main purpose of this paper is to analyze lexical properties of the syntactic characteristics and the semantic appropriateness of negative polarity items(NPI) in English. In this paper, two different topics of negative polarity items are treated under the following themes : (1) negative implicative(NI) and negative polarity items. All the syntactic properties licensing NPI are related with the semantic validity and c-command theory. Chater 3 has dealt with negative implicative and downward entailment of negative polarity items. The downward entailment and the condition licensing NPI are examined and analyzed in the scope of DE operator. In conclusion, the lexical properties of NPI mentioned above can be specified by the syntactic and the semantic characteristics which are related to NPI in English.

초퍼제어-직류전동기의 PSPICE 컴퓨터 시뮬레이션

元忠淵,梁承浩,金德憲,金世燦 成均館大學校 科學技術硏究所 1992 論文集 Vol.42 No.2

In this paper, the authors describe the equivalent circuit for a DC motor in consideration of both magnetic saturation and armature reaction phenomena. To develop DC motor model in PSPICE is to eliminate the gap between drive electronics and models of driven machine. On the basis of these results the dynamic characteristics of a MOSFET chopper controlled DC series motor are investigated by PSPICE simulation and experiment.

대학신입생들의 구강상태 인식도와 상대구강진료필요도에 관한 상관관계 조사연구

원상연,신승철,김선영 단국대학교 치과대학 예방치과 1998 예방치과 세미나집 Vol.- No.12

The purpose of this study was to detemine toe correlation between the awareness and the status of their won oral diseases. A questionnaire survey form was desinged to determine the awareness of their won oral diseases and asked aoo of the university freshmen students to fill out the al of questionaries. They were then immediately examined for을 새 determine their status of dental hard tissures by using the WHO criteria. Also determined were the CPITN and the needs for orthodontic as well as prosthodontic treatments. The results were then statistically analyzed to determine the correlation coefficiencies between the awareness and the status of oral diseases by using SPSS statistical package. The results suggested the followings; 1. The correlation coefficiencies between the awareness and the status for number of teeth decayed, missed, and indicated for extractions were 0.18, 0.06 and 0.09 respectively. 2. The correlationg coefficiency between the awareness and the status in treated teeth(F component) and CPITN were 0.622 and 0.10 respectively. 3. The agreement between examiners and examiners on the needs for prosthodontic treatments was 87.31% and their sensitivity and specificity were 47.54% and 88.55% respectively. 4. The agreement between examiners and examinees on the needs for orthodontic treatment was 70.40% and their sensitivity and specificity were 77.27% and 69.71% respectively. Data indicate that a majority of respondents are lacking in the awareness of their own oral disease status. Therefore, it is concluded that a regular oral examination, a regular counselling on oral health status as well as specific oral health education for each individual warranted.

예방위주의 계속구강건강관리 제도의 운영사례에 대한 분석 연구 : 16세 이하 연령층을 대상으로

원준영,신승철,서현석,류현 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.3

The purpose of this study was to obtain database for developing a model of incremental dental care system in Korea. The author conducted the incremental dental care for 232 persons during one year in personal dental hospital. The data was analyzed improvement of oral health conditions during initial stage and 1st incremental care stage, and required cost during one year. The results were as follows ; 1. Active caries free rate was increased from 75.43% to 94.83% during incremental dental care. 2. The mean care time was estimated 486.1 minutes per one person. The dental chair-time for incremental dental care was 314.9 minutes and the indirect required time was 171.2 minutes. 3. The mean care cost of incremental dental care was estimated 413,159 Won based on customary fee and 284,576 Won based on relative value scale, 278,521 Won based on labor cost and clinic operating cost. 4. The proper incremental dental care cost of the first year until highschool student was estimated about 280,000 Won, and the cost seemed to be reduced from second year. 5. It is suggested that incremental dental care program in personal dental clinic is effective means of improving oral health and it is recommended to extend the incremental dental care program.

寡占構造에서의 銀行의 金融規制 選好誘引

元承淵 韓國計量經濟學會 1996 계량경제학보 Vol.7 No.-

이 논문은 은행의 金融規制 選好誘引을 이론적으로 모형화하였다. 지금까지의 은행산업에 대한 분석이 市場構造的 特性을 덜 고려한 데 비해, 이 논문은 은행이 현실적으로 흔히 처하는 寡占市場을 전제하고, 게임이론을 이용하여 은행의 형태를 분석하였다는데 의의가 있다. 과점시장에서 은행이 금융규제를 선호할 유인은 다음 두 가지로 요약된다. 첫째, 금융규제는 카르텔을 유지하는 기능을 함으로써 은행이윤을 제고시킨다. 둘째, 寡占市場에서는 정부개입이 사적 보험보다 은행의 파산위험을 효과적으로 방지할 수 있다. 이러한 분석결과는 金融規制의 過程에서 規制者인 政府뿐만 아니라 被規制者인 民間의 입장과 태도가 중요함을 보여준다. 특히, 이 결과는 한국에서 진행되는 금융자율화 과정도가 중요함을 보여준다. 특히, 이 결과는 한국에서 진행되는 금융자율화 과정이 규제자뿐 아니라 피규제자에 의해서 왜곡될 수 있는 가능성을 시사한다.

지방자치와 기초교육자치 관계에 대한 연구

양승미,최승원 梨花女子大學校 法學硏究所 2017 法學論集 Vol.22 No.1

기초교육자치 확대의 경우, 국가 전체적인 교육제도에 반하지 않는 범위 내에서 그 지역의 인적･물적, 유･무형적 교육자원을 최대한 효율적으로 활용하여 영유아교육에서부터 지역인재교육 및 평생교육에 이르기까지 지역적 다양성을 고려한 종합 체계적인 교육프로그램과 세부 부문프로그램을 모델링할 필요가 있다. 향후 교육은 획일적인 공급자 중심의 교육을 지양하고 다양한 디지털매체를 통한융복합 교육콘텐츠와 연동서비스를 활용한 수요자 자기설계형 교육을 지향해갈 것이다. 어느 지역에서 태어나 자라며 자연스럽게 그 지역인재로도 성장하며 원하는 경우 평생을 살아갈 수 있도록, 아날로그 디지털 양 측면에서의 수요자 중심의 참여형 지식기반 교육시스템을 구축해가는 것이 중요하며, 근거리 교육자치를 통하여 학부모인 주민의 적극적 참여 또한 제도화된다면 근거리 생활자치의 소중한 실현수단이 되어 풀뿌리 민주주의에도 기여할 수 있다. 기초교육자치 확대에 있어서 조직이나 기관구성부터 할 것이 아니라, 프로그램 시행과정에서 또는 시행경험 후 어떤 교육자치 조직이나 기관구성이 적합한지, 관련 권한이나 기능 및 사무배분을 어떻게 하는 것이 바람직하며 효율적인 분업 및 협업을 어떻게 할지 등을 충분히 숙려하면서 조직모델을 형성해가는 방향 즉, 선 교육프로그램 후 교육조직 및 기관구성의 접근을 하는 발상의 전환을 강조하고자 한다. 기초교육자치 모델은 반드시 전국 획일적일 필요가 없고, 지역에 따라 다른 조직이나 기관구성과 프로그램운영이 가능하며, 교육열이 유난히 높은 우리나라의 경우 기초교육자치야말로 주민의 근린생활영역에서의 풀뿌리 민주주의를 실현하는 최적의 학교 역할을 할 수 있을 것이다. In the expansion plan of education self-governing, it is necessary to utilize the human, physical, tangible and intangible educational resources of the region as efficiently as possible, within the scope of the national education system, and to need to model a comprehensive systematic education program and sub-program. Future education will focus on education for consumers' self-design education, which avoids uniform supplier-centered education, and utilizes multifunctional educational contents and services through various digital media. It is important to establish a consumer-centered, participatory knowledge-based education system in terms of both analog and digital aspects so that students can be raised naturally and grow as local talents and live a lifetime if desired. If the active participation of the local government is institutionalized, it can also contribute to the grassroots democracy as a valuable means of realization of local living autonomy. It is desirable to establish what kind of educational autonomous organization or organization is appropriate in the course of program implementation or implementation experience. We will emphasize the transformation of the idea of approaching the formation of the organizational model, that is, the educational organization and organization structure after the pre - education program, with sufficient consideration of how to collaborate. The expansion plan of education autonomous model does not necessarily have to be uniform nationwide. It is possible to organize different organizations and institutions according to the region. In Korea where the education attention is exceptionally high, the expansion plan of education autonomy realizes the grassroots democracy in the neighborhood living area of the inhabitants. Local education autonomy is a school of democracy.