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Su-Hwan Lee,Hui-Su Bae,Yang-Yeol Oh,Sang-Hun Lee,Yeong-Joo Kim,Sun Kim,Jin-Hee Ryu,Kang-Ho Jung,Choong-Geun Lee,Jae-Hyeon Kim,Yeong-Doo Kim,Weon-Young Choi,Jae-Yeong Cho,Kyoung-Bo Lee,Keon-Hui Lee,Ki- 한국토양비료학회 2016 한국토양비료학회지 Vol.49 No.6
It is known that the poor soil fertility of newly reclaimed saline soils is due to the lack of organic matter and available mineral nutrients for crop production. The effect of green manuring with Sesbania aculeata in combination with five rates of urea-N treatments (N0. N25, N50, N75, N100) on the productivity of a subsequent whole-crop barley and the fertility of the reclaimed saline soil in Saemangeum was evaluated in the field during 2013-2014 growing season. Sesbania was grown during summer season (June to October). The amount of Sesbania incorporated was 16.2 Mg ha<SUP>-1</SUP>. Sesbania contributed to 393 kg N ha<SUP>-1</SUP> to the soils when ploughed down and incorporated before whole-crop barley cultivated. The performances of whole-crop barley following sesbania incorporation were significantly affected by a combination of Sesbania manuring and different N rates. The N fertilizer equivalence without N fertilizer following Sesbania was 42.6% (63.9 kgN ha<SUP>-1</SUP>), compared with N100(150 kg N ha<SUP>-1</SUP>) in fallow soils. The whole-crop barley yield responded to N fertilizer rates in both sesbaniaamended and fallow soil. The yield response to nitrogen rates in fallow soil was linear (Y=0.0586X+3.3011, R<SUP>2</SUP> =0.9534), whereas that in sesbania-amended soils was quadratic (Y= -0.001X<SUP>2</SUP>+0.1322X+5.7143, R<SUP>2</SUP>=0.9576). The yield of whole-crop barley in sesbania-amended with increasing N rates was increased up to SN75 (115 kgN) 10.3 Mg ha<SUP>-1</SUP>. Apparent N recovery (ANR) of whole-crop barely showed decreased with sesbania plus increasing rates of N fertilizer. Despite higher yield with sesbania manuring plus increasing N rates, the contributions of N from Sesbania with increasing N rates to whole-crop barley were decreased, whereas those from fertilizer increment due to excessively mineralized Nitrogen. Considering yield, ANR, N contribution from Sesbania and nitrogen fertilizer, the optimum N rate was N50 rate following sesbania incorporation.
Keon-Il Yang,Choong-Seop Ji,Ock-Hyun Cho,Ho-Jin Yun,Won-Pyo Lee,Byung-Ock Kim,Sang-Joun Yu 조선대학교 치의학연구원 2022 Oral Biology Research (Oral Biol Res) Vol.46 No.1
The aim of this study was to evaluate the clinical and histologic outcomes of sinus floor augmentation using mixtures of cancellous and cortical freeze-dried bone allograft (AG) at two different ratios (5:5 and 3:7). The sinuses of 21 patients were grafted with the two types of mixed allografts. Cone-beam computerized tomography scans were obtained, and the radiographic parameters measured were residual bone height and bone gain after bone healing. Clinical examinations and histologic analyses were performed 6 months after the grafting procedure. Twenty implant sites in the 5:5 mixed AG group and 22 implant sites in the 3:7 mixed AG group were analyzed. The bone gain after bone healing was 13.0±3.1 mm in the 5:5 group and 14.5±3.5 mm in the 3:7 group. The survival rates of the implants in both groups were 100% during follow-up periods. The newly formed bone was 29.9±16.6% in the 5:5 AG group and 25.1±10.1% in the 3:7 AG group. Moreover, the percentage of residual graft material was 15.2±12.7% in the 5:5 AG group and 20.4±12.1% in the 3:7 AG group. The connective tissues were 55.0±14.0% and 54.6±10.0% in the 5:5 and 3:7 AG groups, respectively. The two different ratios of AG presented with different histological outcomes after bone healing. Additionally, adequate new bone formation for the placement of implants was achieved following maxillary sinus augmentation using both types of AG.
방건환(Keon-Hwan Bang),신창환(Chang-Hwan Sin),이충기(Choong-Ki Lee),유제봉(Je-Bong You),김자희(Ja-Hee Kim) 한국컴퓨터정보학회 2017 한국컴퓨터정보학회 학술발표논문집 Vol.25 No.1
최근 서울에 자동차 보유 대수가 급증함에 따라 주거나 상가 밀집 지역에서 주차 문제는 갈수록 심화되고 있어 이에 따른 주차공간 확보 및 기존 주차 공간의 활용할 수 있는 시스템이 요구되고 있다. 따라서 본 논문에서는 공유경제 개념을 도입하여 개인이나 단체가 소유하고 있는 주차 공간을 사용하지 않는 시간대에 주차 가능 공간을 다른 사람들과 공유할 수 있는 시스템을 제안한다. 본 플랫폼은 웹, 안드로이드, 라즈베리파이, 데이터베이스로 구성되어 있으며 실제 주차장에 설치된 초음파 센서와 CCTV 이미지를 분석하는 OpenCV를 이용하여 현재 주차장의 사용 중인 공간과 비사용 중인 주차 가능 면수를 분석하고 분석한 정보를 사용자들에게 제공한다.
진건(Keon Jin),김종수(Jong Soo Kim),고경심(Kyung Sim Koh),박충학(Choong Hak Park) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.1
The term congenital anomalies here refers to structural defect (congenital malformations, deformations, disruptions and dysplasias), chromosomal abnormalities, inborn errors of metabolism and hereditary disease. The prevalence of major congenital malformation (I.e., defects either incompatible with life or severe enough to interfere with normal living) is about 2% to 3%. In the past, infection was one of the major cause of perinatal morbidity and mortality, but owing to the development of antibiotics and intensive care, congenital anomalies are becoming a major cause of perinatal morbidity and mortality. Perinatal diagnosis of congenital anomalies is becoming more important because appropriate perinatal care may minimize the effect of congenital anomalies. This report was based on the 234 cases of the congenital anomalies among 8,099 newborns delivered at Dankook University Hospital from Mar. 1st, 1995 to Feb. 28th, 2000. The analyzed results were as follows: 1. The overall incidence of the congenital anomalies was 2.9%. The incidence of congenital anomalies in male newborns (141, 60.2%) was statistically significantly higher than that of female (90, 38.5%) and ambiguous (3, 1.3%). 2. The incidence of the congenital anomalies of 21-25 year old maternal age was the lowest among each other age group. The incidence of this group was 1.6%, of less than 20 year old group was 2.7%, of over 35 year old group was 2.9%. But there was no statistically significant difference among each maternal age groups. 3. There was no statistically significant difference in the incidences of congenital anomalies between parity. 4. The incidence of low-birth weight less than 2,500 g in congenital anomalies was 9.2%, which was 5.1 times higher than that of the more than 2,500 g. 5. The incidence of vertex presentation in congenital anomalies (192, 82.1%) was very high compared to breech presentation (42, 17.9%). 6. In the method of deliveries, vaginal deliveries was 131 cases (56.0%) and cesarean section was 103 cases (44.0%). 7. The incidence of the congenital anomalies in stillbirth was 28.4%, which was 13 times higher than that of the live birth. 8. The perinatal mortality rate in congenital anomalies were 93 cases (39.7%) and stillbirths were 62 cases (28.4%). 9. When classified according to the type of congenital anomalies, the rate of the incidence was 13.3% (31 cases) in central nervous system, 9.4% (22 cases) in neck and face anomaly, 6.8% (16 cases) in cardiac anomaly, 1.3% (3 cases)in pulmonary anomaly, 5.5% (13 cases) in gastrointestinal anomaly, 13.7% (32 cases) in genitourinary anomaly, 18.4% (43 cases) in musculoskeletal anomaly, 9.0% (21 cases) in skin and soft tissue anomaly, 14.1% (33 cases) in multiple anomaly and 5.5% (13 cases) in chromosomal anomaly. The most common major congenital anomalies was hydrocephalus (14 cases, 5.9%) and polycystic kidney (14 cases, 5.9%). The rate of perinatal mortality of the congenital anomalies was 38.5%, particularly it was the highest in the CNS anomalies which were 89.7%, the next 50.0% in cardiopulmonary anomalies.
BOOTSTRAPPING GENERALIZED LINEAR MODELS WITH RANDOM REGRESSORS
Lee, Kee-Won,Kim, Choong-Rak,Sohn, Keon-Tae,Jeong, Kwang-Mo The Korean Statistical Society 1992 Journal of the Korean Statistical Society Vol.21 No.1
The generalized linear models with random regrssors case are studied for bootstrapping. Only the natural link functions are considered. It is shown that the bootstrap approximation to the distribution of the maximum likelihood estimators is valid for almost all sample sequences. A slight extension of this model is also considered.