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.

Combining Timber Production and Wood Processing for Increasing Forestry Income: A Case Study of 6th Industrialization in Korean Forestry

Won, Hyun Kyu,Jeon, Hyon Sun,Han, Hee,Lee, Seung Jung,Jung, Byung Heon Institute of Forest Science 2017 Journal of Forest Science Vol.33 No.4

This study was aimed to analyze the increased forestry incomes by combining timber production and wood processing, which is one of 6th industrialization types in Korean forestry. The selected household has been engaged in forestry for two generations and they produce timber and associated wood products in their own facility. The wood products include dimension lumber, interior wood material, cutting board, and cube chips, the household also utilize logging and sawmill residues as well as seed and seedlings as by-products. Incomes and expenses that have been incurred on individual processes of the sequential timber production and wood processing were surveyed, and we analyzed the economic outcomes of entire business. The results of this study indicate that the gross income of the household is 122.3 million Korean won and the net income is 93.6 million Korean won. The net income of the household is approximately 2.8 times higher than the average net income of whole households in the forestry of Korea in 2016, which is approximately 4.3 times higher than that of households that have been particularly engaged in timber production over the country. We found that the 6th industrialization by combining the two sequential processes creates approximately 3.2 times as much added value compared to the case relying on timber production only.

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.

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.

Flavobacterium meningosepticum에 의한 균혈증 1예

장성원,유진홍,진승원,김선우,김연식,박순민,이대훈,최민호,최주연,신완식,강문원,강지민 대한화학요법학회 1997 대한화학요법학회지 Vol.15 No.1

1996년 6월 카톨릭대학교 부천성가병원에 뇌경색으로 입원했던 61세 남자 환자의 혈액에서 Flavobacterium meningosepticum을 분리하였다. 환자는 폐렴을 동반한 패혈증의 예로 ceftriaxone과 metronidazole을 투여하였으나 입원 48시간만에 사망하였다. Flabovacterium meningosepticum is a rae cause of nosocomial infection which shows multi-drug resistance. It mainly invades patients with impaired immunity. Recently, we experienced a case of F. meningosepticum bacteremia in a patient with chronic debilitated state owing to stroke. The clinical progress was so rapid that he died within 48 hours. Blood culture revealed F. meningosepticum which showed characteristic yellow colony in blood agar plate.

강원남부 폐광지역 개발기금 사업의 경제적 효과 : 2001~2021년간의 기금사업을 중심으로

유원근(Won Keun Yu),최호영(Ho-yeong Choi),김승렬(Seung-Leul Kim) 한국산학기술학회 2022 한국산학기술학회논문지 Vol.23 No.11

본 논문은 2001년부터 2021년 기간의 강원남부 폐광지역 4개 시군을 대상으로 전개된 폐광지역개발기금 투자의 경제적 파급효과를 실증적으로 분석함을 목적으로 한다. 이 기간 동안 연차별 투자 건수 1,220개로 구성된 691개의 재원 사업이 이행되었다. 분석대상 기간 동안 연차별로 투자된 재원의 합계는 총 1조 6,180.5억원이며, 지역산업연관분석을 통해 실증적으로 경제적 파급효과를 도출하는 것이 본고의 목적이다. 폐광지역개발기금의 투자금액의 면에서 보면, 대체로 생산유발효과가 상대적으로 낮은 3차산업 부문에 대한 재원의 비중이 큰 것으로 나타났다. 그러나 다른 한편으로 고려해야 할 점은 3차산업 부문의 취업유발효과가 이 지역에서 타 산업에 비해 높다는 점이다. 이러한 산업구조적 특성을 토대로 향후 폐광지역개발기금 사업의 경제적 효과를 최적화시키기 위해서는 유발계수 값의 분포를 고려한 재원의 배분 계획을 마련할 필요가 있다. 본고의 추정결과는 향후 폐광지역 개발기금의 합리적인 배분을 위한 실증적 기초 자료로서의 역할을 할 것으로 기대된다. This study aimed to analyze the economic effects of the closed mine area development fund on the southern part of the Gangwon provinces during the period 2001~2021. In this time frame, 691 financial projects comprising 1,220 items in the annual base were carried out and the total amount of investment was 1,618.05 billion Won. The main goal of this study was to derive empirical evidence about the economic effect of this fund through the regional industrial input-output tables. An analysis of the distribution of financial resources available to the specific fields revealed that the portion of funds invested in the tertiary industry sector has a low production inducement effect, which was not comparable with other industries. However, the movement of the employment inducement coefficient of tertiary industries led by the services sector in this area is comparatively high. Based on the regional character of the industrial structure, it is necessary to make a deliberate funds distribution plan taking the movement of the above inducement coefficients into consideration, to optimize the economic effect of the closed mine area development fund. The empirical output derived from this study would assist policymakers in establishing an effective distribution strategy for the closed mine area development fund in the future.

c-형강 및 ebb & flow 방식에 따른 경제성 분석

강승원(Seung Won Kang),박천호(Chun Ho Pak),조용성(Yong Sung Cho) 한국원예학회 2007 원예과학기술지 Vol.25 No.3

관비재배와 저면관수인 ebb & flow, C-형강의 재배방식에 따른 고품질분화 생산을 위한 재배농가의 경제성을 분석하였다. 이를 위해 화훼농가의 비용구조를 분석하였고 자본 회수기간 및 내부수익률의 추정, 관수에 따른 인건비 절감 효과를 분석하여 재배방식에 따른 경제성을 비교하였다. 10a(991.7m²) 규모의 자동온실에 대해 관비재배방식을 선택한 시클라멘 재배농가의 총 비용은 9,993.8만원으로 추정되며, 이 중 시설비는 74%(7,410만원)를 점하고 연간 2,583.8만원의 경영비를 지출할 것으로 예상된다. 반면, C-형강방식을 선택한 재배농가는 초기 시설비용으로 약 8,520.0만원(총비용의 약 70%)을 지출하고, 매년 경영비로 3,597.0만원을 지출할 것으로 추정된다. 한편, 투자자금에 대한 자본회수 기간을 분석한 결과 10a 규모의 자동온실에서 시클라멘을 재배하는 농가에서 관비재배방식 혹은 C-형강방식을 선택할 경우에는 초기시설투자비 회수기간이 약 4 년 정도 소요될 것으로 예측되며, ebb & flow 방식을 선택할 경우에는 약 5년 정도의 시간이 소요될 것으로 예상된다. 또한, 내부 수익률을 추정한 결과 ebb & flow시설과 C-형강시설을 5년과 6년씩 사용한다고 가정할 경우, ebb & flow시설의 내부 수익률은 각각 9%와 14%로 나타났고, C-형강시설의 경우에는 각각 13%와 17%로 나타나 시중의 저축성예금 수신금리 4.82%와 비교하여 경제성이 높은 것으로 분석되었다. Economical efficiency for production of high quality-potted plants was analyzed by types of irrigation system such as conventional fertigation, ebb & flow, and C-channel as subirrigation systems. After cost structure was analyzed, payback period of capital, internal rate return (IRR), and effects of reduced labor cost were estimated. The gross cost of cyclamen-producing farmers using hydroponic systems in automated greenhouses (10a) was about 100 million won. Of the gross cost, installation and operation costs occupied 74% and 25%, respectively. In the C-channel subirrigation system, gross cost was 120 million won approximately. Installation and operation costs occupied 70% and 30%, respectively. Payback period of capital was 4 years for fertigated irrigation and C-channel subirrigation system, whereas it was 5 years for ebb & flow. IRR of ebb & flow and C-channel subirrigation systems was higher than the interest rates of 4.82%, indicating economic efficiency.

Presurgical Naso-Alveolar Molding Appliance for Unilateral Cleft Lip and Palate

Baek, Seung-Hak,Yang, Won-Sik,Kim, Sukwha 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.6

본 연구의 목적은 1)편측성 순구개열 신생아 환자에 대한 술전 비치조 정형장치(PNAM)치료를 소개하고 2) 이 장치의 치조골 정형 효과를 평가하는 것이다. 서울대학교 병원 교정과에 내원하여 PNAM장치를 사용하여 치료받은 4명의 편측성 순구개열 호나자(남자 3명, 여자 1명, 평균 초진연령: 23.2일)을 대상으로 하였으며, 치조골에서 대분절과 소분절 파열부간의 평균거리는 8.27mm였고 치조골 정형치료의 평균기간은 9.7주였다. 초진시(Ti)와 성공적인 치조골 정형술이 이루어진 시기(T2)에 이들 환자의 인상을 채득하여 모형을 제작한 후, 사진촬영과 digital caliper를 사용하여 7개의 길이 항목과 5개의 각도항목을 계측하였다. SPSS win. ver 7.5프로그램을 사용하여 통계처리 하였고, 평균치의 차이를 비교하기 위하여 paired t-test를 사용하였다. 1. 신생아 치조골 후방부는 치조골 정형술을 시행하는 동안 안정된 구조물이었다. 2. 치조골 정형술에 의하여 대분절의 전방 성장이 억제되었다. 3. 치조골 정형술에 의한 파열부의 패쇄는 주로 대분절 전방부의 내측과 후방 굴곡 및 소분절 전체의 외측 굴곡에 의한 것이었다. The goals of this study were to present presurgical naso-alveolar molding(PNAM) appliance in unilaterla cleft lip and palate treatment and to evaluate the effects of PNAM appliance on alveolar molding. Samples were consisted of 4 unilateral cleft lip and palate infants(3 males and 1 female, mean age=23.2 days after birth) who were treated with PNAM appliances in Department of Orthodontics, Seoul National University Dental Hospital. Average alveolar cleft gap between the greater and lesser segment was 8.27 mm and average duration of alveolar molding treatment was 9.7 weeks. These patients' models were obtained at initial visit(T1) and after successful alveolar molding(T2). Seven linear and five angular variables were measured by using photometry and digital caliper. All statistical analyses were performed by SPSS win ver. 7.5 program. Paired t-test was used to compare the mean values. 1. The posterior part of alveolar segments are the stable structures during alveolar molding treatment period in infants. 2. Forward growth of th greater segment may be hindered by the action of alveolar molding. 3. The closure of cleft gap during alveolar molding were usually due to inward and backward bending of the anterior part of the greater segment and outward bending of the whole lesser segment.

선별이적처리를 통한 운영 중인 매립지의 재이용 방안

이승원 ( Seung-won Lee ) 한국환경기술학회 2021 한국환경기술학회지 Vol.22 No.3

In this study, the amount of landfill by on-site excavation landfill waste was calculated, and. the density was corrected to calculate the reuse capacity of the landfill. The amount of landfill waste that has been brought in is expected to be 6,647,056 ton. In addition the reuse and waste produced by the sorting transfer method was plastic, and throughput of 910,312 ton. The density-corrected reclaimed landfill capacity was estimated to be 2,276,000 m³. The landfill amount calculated by excavation was 841,201 ton, and the reclaimable landfill capacity was predicted to be 2,103,000 m³. Assuming that 930,312 ton of plastic are sorted and 30 % of 273,094 ton are processed in relation to the SRF power facility, that will produce 0.96 kW/ton(SRF standard) of electricity at 40,000 won/kW and profit of 17,477,990,400 won is expected. Currently, there are problems in securing the site of a new landfill and stabilizing the natural landfill, so if is useful for the early stabilization and efficient operation of the landfill that is being operated by introducing the selective transfer method.

무선 애드 혹 기반 액티브네트워크상에서 QoS지원에 관한 연구

李基源,裵振勝,丁燦赫,金玄郁,李光培,姜景仁,朴京培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - In this thesis, we propose a QoS supporting method on wireless ad hoc-based active network for improving reliability. On the loss of route path, the existing DSR routing protocol has several problems with wireless network communication because of decease of data reception rate and increase of network load. The proposed method improves reliability of data transfer by using functions of active network. That is, by using functions of active nodes and active packets, the proposed method supports QoS with reservation transfer method that saves data packets on transfer at intermediate nodes with lost path and then re-transmit the packets after route reconfiguration.