지방 2차병원 응급실 내원환자의 특성

안현철 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

This study was carried out to investigate the characteristics of emergent patients and to contribute the efficient management of emergency medical services in a secondary hospital. The subjects were 16,780 patients visiting the emergency room of a 130-bed local hospital located in Ansung, Kyunggi province during recent one year. The results were as follows: 1. While the highest urgent patients by age groups were over 60 years(9.3%) and 50 - 59 years(4.5%) in order, the highest emergent patients in male(3.2% and 3.3%) were significantly higher than in female(2.4% and 2.2%)(p<0.001). 2. The most frequent arrival time of urgent and emergent patients were on 11 p.m. - 3 a.m. and on 4 a.m. - 8 a.m., respectiverly. 3. The rates of urgent patients by causes of diseases were predominant in traffic accident (10.3%) and in other injury(6.0%), and those of emergent patients were in other injury (9.7%) and in traffic accident(7.1%). 4.The rates of urgent and emergent patients were significant higher in transfer-in patients(22.1% and 25.0%) than in direct visiting patients(both 2.3%)(p<0.001). 5. The rates of urgent and emergent patients among the visiting patients were 2.9% and 2.8%. Consequently, there were insufficient and inappropriate roles and functions of this emergency room. Therefore, further studies for the evaluation of emergency medical service system, roles and functions in emergency room for local hospitals would be recommended.

A novel recommendation model of location-based advertising: Context-Aware Collaborative Filtering using GA approach

안현철 PERGAMON-ELSEVIER SCIENCE LTD 2011 EXPERT SYSTEMS WITH APPLICATIONS - Vol.39 No.3

Corporate Credit Rating using Multiclass Classification Models with Order Information

안현철 WASETWorld Academy of Science, Engineering and Tec 2011 Engineering and Technology Vol.60 No.1

Context-aware recommender system for location-based advertising

안현철 Trans Tech Publications Ltd. 2011 Key Engineering Materials Vol.467469 No.-

방광주변 지방층을 침범한 방광암에서 전산화단층촬영의 역할

안현철,이강현,안희중 大韓泌尿器科學會 1996 Korean Journal of Urology Vol.37 No.1

한국산 벚나무속의 외부형태적 연구

안현철,추갑철,박삼봉 진주산업대학교 농업기술연구소 2007 農業技術硏究所報 Vol.20 No.-

우리나라에서 자라고 있는 벚나무속 18종류에 대해 외부 형태적 특징을 조사해서 얻은 결과는 다음과 같다. 벚나무속의 잎들은 모두 호생하고, 잎의 평균 길이가 8㎝이하와 9㎝이상으로 나눌 수 있는데, 평균 8㎝이하의 수종은 앵도나무, 이스라지, 풀또기, 매실나무, 섬개벚나무, 산옥매 등의 6수종이고, 9㎝이상은 산벚나무, 올벚나무, 사옥 등 12수종 이었다. 잎이 가장 작은 수종은 앵도나무로 평균 5.5㎝이고, 가장 긴 수종은 복사나무로 평균 13.9㎝이었다. 선점은 이스라지는 없었고, 나머지 종들은 모두 존재했는데, 선점의 위치가 엽병에 있는 복사나무, 사옥, 왕벚나무 등이고, 잎에 있는 종은 앵도나무, 산옥매, 수양벚나무, 풀또기, 매실나무, 섬개벚나무, 자두나무 등이며, 엽병과 엽신 모두에 있는 종은 양벚나무, 개벚나무, 산벚나무, 귀룽나무, 올벚나무, 살구나무, 개살구나무 등 이었다. Eighteen species in the genus Prunus was surveyed in terms of distribution of these sampled species, morphological characteristics at each species to find out the systematic relationships among the sampled species. The results are as follow; The leaf of genus Prunus are alternate. The average long of leaf is divided by two parts. One group is long of 8㎝(There are P. tomentosa, P. japonica var. nakaii, P. triloba var. truncata, P. mume, P. buergeriana, P. glandulosa), another group is long of 9㎝(There are P. sargentii, P. pendula for. ascendens, P. serrulata var. quelpaertensis, P. yedoensis, P. leveilleana, P. liveilleana var. pendula P. avium, P. salicina, P. persica, P. mandshurica var. glabra, P. padus, P. armeniaca var. ansu). The species on best short leaf is P. tomentosa (average 5.5㎝). The species on best long leaf is P. persica (average 13.9㎝). Only species petiole P. japonica var. nakaii has no gland. Taxon with petiole of gland are P. persica, P. serrulata var. quelpaertensis, P. yedoensis. Taxon with leaf of gland are P. tomentosa, P. glandulosa, P. liveilleana var. pendula, P. triloba var. truncata, P. mume, P. buergeriana, P. salicina. Taxon with petiole and leaf of gland are P. avium, P. leveilleana, P. sargentii, P. padus, P. pendula for. ascendens, P. armeniaca var. ansu, P. mandshurica var. glabra.

페놀이 주성분인 동박적층판 폐기물 (Scrap CCL)의 열분해 메커니즘에 대한 연구

안현철,김승도,송재헌,김영춘,김경수,김상범,정재성,공성호 대한환경공학회 2007 대한환경공학회 학술발표논문집 Vol.2007 No.12

심정지 후 치료적 저체온 요법을 시행한 환자의 사망예측에 있어 B-type natriuretic peptide수치의 유용성

안현철,임용수,조진성,김진주,양혁준,박원빈,우재혁,현성열 대한응급의학회 2013 대한응급의학회 학술대회초록집 Vol.2013 No.2

Background: Some study demonstrated that B-type natriuretic peptide (BNP) has a predictive value of sudden cardiac arrest in heart failure patients. The aim of this study was to investigate the usefulness of serum BNP level for prediction of death in post cardiac arrest patients treated with Therapeutic hypothermia (TH). Methods: We prospectively studied out-hospital cardiac arrest (OHCA) survivors who treated with TH between April, 2007 and August, 2010. We divided into two groups based on 3 month death. Initial serum BNP level was checked and we compared the BNP level between both group. Results: Total 162 patients were enrolled in study. Among 162 patients, 109 patients were male, mean age was 50. The BNP level of non-survival group (n=77) was higher than those of survival group (n=85). However, there had no statistically difference (19.45 pg/ml vs 30.75 pg/ml, p=0.174). The BNP cut off value of 106 pg/ml for 3 month death had a sensitivity of 35.1% and a specificity of 78.8%. In the logistic regression analysis, BNP level higher than 106pg/ml was significantly associated with 3 month death (Odds Ratio [OR] 2.625, 95% Confidence Interval [CI] 1.066-6.463) and other independent factors were BLS to ROSC (OR, 1.105; CI, 0.082- 1.038), non- VF/VT (OR, 3.698; CI, 1.632-8.380), APACHE II score (OR, 1.117; CI, 1.035-1.204). Conclusion: In our study, initial Serum BNP level is related with 3 month death in patients who received TH after OHCA. Further randomized controlled study is needed.

고함수 바이오매스(음식물,간벌목,옥수수)의 열수가압반응에 대한 연구

안현철,장은석,최창식,김호 대한환경공학회 2007 대한환경공학회 학술발표논문집 Vol.2007 No.12

연화산 도립공원의 산림군집구조와 동태에 관한 연구

안현철,조현서 진주산업대학교 농업기술연구소 2000 農業技術硏究所報 Vol.13 No.-

본 연구는 연화산도립공원 소나무림의 식생구조와 동태를 분석하여 소나무림의 지속적인 유지와 경영에 대한 정보를 제공하기 위하여 수행되었다. 그 결과 연화산 도립공원의 산림군집 구조는 교목층(12종류), 아교목층(35종류), 관목층(50종류)으로 구성되어 있다. 각 층위별 중요치는 교목층에서 소나무(160.32)가 가장 높고 굴참나무(54.07%), 서어나무(36.41) 등이었다. 아교목층에서 서어나무(114.53), 굴참나무(27.66), 때죽나무(15.13), 졸참나무(12.48%) 등이 높은 우점율을 나타내었고, 관목층에서는 진달래(13.76), 당단풍(9.27), 덜꿩나무(9.57), 가막살나무(8.93) 등으로 나타났다. 조사방형구를 대상으로 출현-비출현에 의한 χ^2검정결과 느티나무-비목, 비목-서어나무, 자귀나무-산벚나무, 개서어나무-말채나무간에는 1% 수준에서 양의 상관이 인정되었고, 또 쪽동백-당단풍, 개옻나무-졸참나무 등 9개 수종간에는 5% 수준에서 양의 상관이 있어 동일한 생태적 지위를 가지고 있었다. 그리고 서어나무-당단풍, 굴참나무-느티나무, 소나무-산벚나무간에는 5% 수준에서 음의 상관이 발생하여 생태적 지위가 이질적이었다. 연화산 소나무림은 활엽수림과의 천이경쟁이 진행되고 있어 지속적인 소나무림 보존을 위한 관리가 요구된다. This study was focused on the dynamics and structure of Pinus densiflora forest to provide the information for management and sustainable maintenance in Mt. Yeonhwa Kyungnam Provincial park. The layer structure of Pinus densiflora forest were consist of tree layer (12 species), subtree layer (35 species), shrub layer (50 species). According to the importance value of stratification of layers, In tree layer, Pinus densiflora was dominante the highest value of 160.32%, Quercus variabilis 54.67, Carpinus laxiflora 36.41%, in middle layer were Carpinus laxifora 114.53%, Quercus variabilis 27.66%., Stylax japonica 15.13%, Quercus serrata 12.48%, Lindera erythrocarpa 24.52% and shrub layer were Rhododendron mucronulatum 13.76%, Acer pseudo-sieboldianum 9.27%, Viburnum erosum 9.57%, Viburnum dilatatum, 8.93% etc, respectively. Results of chi-square test statistics based on presence-absence parameters, the positively associated species pair were Zelkoba serrata - Lindera erythrocarpa, Lindera erythrocarpa-Carpinus laxiflora, Albizzia julibrissin-Prunus sargentii. And covariation was calculated based on quantitative measure of density. The results showed that the association and covariation values among species not agreed with each other. Pinus densiflora was competition status with Quercus variabilis and Carpinus laxiflora of tree layer, and Carpinus laxiflora was dominance species with Quercus variabilis of subtree layer. Therefore for the sake of sound management and sustainable maintenance of Pinus densiflora forests was requires to conserve for the natural resources and gene pool.