http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최근호,Keun Ho Choi 한국화학공학회 2023 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.61 No.3
A mathematical model for predicting the liquid circulation velocity in an airlift reactor was developed based on the mechanical energy balance of the fluid circulation loop. The model considered the energy loss due to a 90° turn, the energy loss due to friction, and the energy loss due to the change in cross-sectional area at each part of the reactor. The model that separately considered the loss coefficients related to friction, direction change, and cross-sectional area change was able to predict the liquid circulation velocity better than the previous model using lumped parameters. The liquid circulation velocity was measured by the tracer pulse method. Most of our experimental results obtained in external-loop airlift reactors, which had the top and bottom connecting pipes, as well as other investigators' results obtained in various types of airlift reactors, were well predicted by the developed model with an error within 20%. Useful empirical equations for the loss coefficient related to the 90° turn of the circulating fluid were obtained in external and internal-loop airlift reactors and used to predict the liquid circulation velocity.
산재근로자의 원직장 복귀 후 지속적인 고용유지를 위한 데이터 마이닝 기반의 주요 요인 및 패턴 도출 연구
최근호,유동희 한국직업재활학회 2016 職業再活硏究 Vol.26 No.3
본 연구에서는 제3차 산재보험패널 데이터에 다차원 분석이 용이한 데이터 마이닝 기법 중 하나인 의사결정나무 알고리즘을 적용하여 원직장 복귀 후 고용유지에 영향을 주는 요인들과 요인들 간의 관계를 분석하였다. 이러한 직장 복귀 이후의 안정적인 고용유지는 산재근로자의 성공적인 직장복귀에 필수적인 요소임에도 불구하고 직장 복귀에 비해 현재 고용유지를 위한 노력과 관심은 부족한 실정이며, 직장 복귀 측면에서 산재로 인한 요양 종결 이후 산재이전에 근무했던 원직장으로 복귀하는 것은 타직장으로 복귀하는 것에 비해 산재근로자에게 양질의 근로조건을 제공해 줄 수 있다고 판단된다. 분석결과, 최종 11개 변수들이 원직장 복귀 후 고용유지에 영향을 미치는 중요한 요인들인 것으로 나타났으며, 최종 12개의 고용유지 관련 패턴이 도출되었다. 본 연구는 원직장 복귀 후고용유지에 영향을 주는 요인들과 요인들 간 관계를 파악하기 위해 고용유지에 영향을 줄 것으로여겨지는 다양한 변수들을 고려하였다는 점과 고용유지에 도움을 주는 패턴들을 도출하였다는 점에서 의의를 찾을 수 있다. 향후 도출된 패턴들은 원직장에 복귀한 산재근로자의 고용을 지속적으로유지하기 위한 방안 수립에 도움을 줄 것으로 기대된다. This study aims to identify factors influencing the stable sustenance of employment after returning to the previous job and the relationships between the factors based on the data mining technique using the third injured workers’ compensation insurance panel data. Although a stable sustenance of employment after returning to a pre-injury job is essential for the successful return to a job, less attention has been paid to this factor. Moreover, returning to a pre-injury job after completing medical treatment can create better work conditions for industrial disaster workers than starting a new job. Eleven input variables were selected as influential factors on the stable sustenance of employment, and 12 patterns related to the sustenance of employment were derived. This study provides implications in that it considered various important factors that could influence the sustenance of employment and identified their relationships as patterns. We hope that the results of our study will help establish a policy for the sustenance of employment after returning to a previous job.
구강악안면영역의 낭종에 대한 6년간의 후향적 임상 연구
최근호,장정록,박영준,문혜원,김영준,유민기,국민석,박홍주,유신열,오희균,Choi, Guen-Ho,Jang, Jung-Rok,Park, Young-Jun,Moon, Hyea-Won,Kim, Young-Joon,Yu, Min-Gi,Kook, Min-Suk,Park, Hong-Ju,Ryu, Sun-Youl,Oh, Hee-Kyun 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.5
Purpose : This study was designed to evaluate the clinical aspect of cysts which arised in the oral and maxillofacial region. Patients and Methods : We reviewed clinical record, radiograph, histopathologic and operative report of 155 patients who had been diagnosed as cysts and treated at the department of oral and maxillofacial surgery in Chonnam National University Hospital from January 2003 to December 2008. Gender, age, classifiaction, anatomic distribution, clinical sign and symptoms, treatment, complications and recurrence rate were studied. Results : 1. Among 155 patients, the male patients(64.5%) were more than the female(35.5%). 2. The average age ofthe patients was 37.2 years(ranging from 5 to 79 years). 3. In pathologic classification, radicular cyst and dentigerous cyst were most common cysts, irrespective of 73 cases(48.3%) and 35 cases(23.2%). 4. The frequently involved cystic regions were followed as mandibular molars(38.1%), and maxillary incisors(30.2%). 5. The frequent sequence of clinical symptoms was edema(29.9%), no symptom(18.9%), tenderness(13.9%), pain(11.5%) and abscess(9.4%). 6. The most prevalent treatment was the combination operation, such as cyst enucleation with extraction or endodontic treatment of the causative tooth(76.8%) 7. Among 155 cases, 2 cases that were treated using enucleation method were recurred(1.3%).
캐나다 산학협력(Co-op)교육의 산실 워털루대학교 : University of Waterloo
최근호 한밭대학교 산업과학기술연구소 1994 논문집 Vol.2 No.-
나는 지난 1년간 한국과학재단의 지원으로 캐나다에 있는 워털루대학교에서 방문연구보좌교수의 자격으로 연수를 받은 바 있어, 몇 일전에 평소 가깝게 지내던 교수님으로 부터 본지의 외국대학 소개란을 위한 원고 청탁을 받고는 차마 뿌리치지 못하고, 미흡한 글재주로 그리 잘 알지도 못하는 외국의 한 대학을 소개하려니 부끄러운 마음 금할 길 없으나, 미흡하나마 연구기간동안 수집한 신문자료와 그 대학의 소개책자 그리고 강의 시간표등을 바탕으로 워털루대학교를 소개하고자 한다.