Discordance in Spirometric Interpretations Based on Korean and Non-Korean Reference Equations

Nami Kim,Mi-Hee Park,Se-yeong Kim,Chunhui Suh,Sangyoon Lee,Kun-Hyung Kim,Chae-Kwan Lee,Dae-Hwan Kim,Jong-Tae Lee 대한직업환경의학회 2013 대한직업환경의학회지 Vol.25 No.-

Objectives: Korean regression models for spirometric reference values are different from those of other ethnic groups. The purpose of this study was to evaluate discordance in spirometric interpretations based on using Korean reference equations versus non-Korean reference equations. Methods: Spirometry was performed on 825 Korean male workers from April 2009 to November 2011. The spirometric patterns and disease severity were evaluated using two Korean equations (Choi’s and Lee’s) and three equations for Caucasians (NHANES III, Morris’s, and Knudson’s), and the results of Choi’s equation were compared with the non-Korean equations. The spirometric patterns were defined as normal, restrictive, and mild and moderate obstructive. Results: The mean differences in the FEV1% and FVC% between the two Korean equations were 2.0 ± 1.3% and 3.5 ± 2.2%, respectively. Morris’s equation had the greatest difference in the FEV1% from Choi’s equation: 32.9 ± 8.5%. Knudson’s equation had the greatest difference in the FVC% from Choi’s equation: 10.5 ± 6.5%. Conclusions: The two Korean equations shared similar characteristics of spirometric interpretation. The spirometric interpretations of Choi’s equation were significantly different from those of Morris’s equation and Knudson’s equation.

수도의 生育과 數量構成要素에 관한 硏究 : 徵生物製劑 施用을 中心으로

이진갑,김종세,노영복 조선대학교 기초과학연구소 1986 自然科學硏究 Vol.9 No.1

관행 N.P.K.와 유기물 자원인 볏짚시용과 유기물 부숙촉진제인 미생물제제 첨가시용에 따른 수도작의 생육상황, 수량구성요소 및 수량조사와 토양 미생물상의 소장관계등에 미치는 영향을 규명코자 야외 포장시험을 수행하여 다음과 같은 몇가지 결론을 얻었다. 1. 생육상황은 성숙기에 간장, 수장의 성적이 plot5와 plot6에서 가장 높게 나타났다. 유효경 비율은 plot2인 볏짚 단용시용구에서 높게 나타났으나 수수와 엽면적율은 볏짚, 미생물제재 단용시용구인 plot2와 plot3에서 가장 높았다. 2. 수량은 일반적으로 수행되는 N.P.K. 볏짚처리구인 plot4에 비하여 단일시 용구들은 28% 정도의 수량감소를 나타냈고, 볏짚 및 미생물제재 복합시용구인 plot5와 plot6에서 7%가 증수되었으나 통계적인 유의성은 인정되지 않았으며, 본 연구결과는 1년 성적이기 때문에 계속 검토가 요청된다. 3. 토양 미생물상의 소장조사는 시험전 공시토양의 미생물수 보다도 시험 기간중의 모든 처리구에서 미생물수의 증가를 보였고 N.P.K. 단용구인 plot2보다 유기물 및 미생물제재 첨가구인 다른 시험구들에서 좀 더 많은 미생물수를 나타냈으며 수확후에는 미생물수가 다소 감소되는 경향을 보였다. This experiment was conducted to find out the growth phase, the yield component, and the yield trial of the paddy rice, and the population of the soil microorganisms in the field test area. For this experiment, the author used the conventional N.P.K., the rice straw for source of organic matter, and the microorganism agents for rotting organic matter. Results abtained are summarized as follows; 1. The growth phase of the trunk length and panicle length was the highest in both the plot 5 and 6 at the ripening period. The percentage of effective tiller was high in the plot 2 and that of the panicle number and leaf area highest in the plot 2 and 3. the dry weight was the highest in the plot 2 and 3. 2. In the plot 1, 2 and 3, the yield was as much as 28% less than that of the plot 1. On the other hand, in the plot 5 and 6, it was as much as 7% more than that of the plot 4. As the signification with L.S.D. of the above experiment was ignorable. It will be necessary to continue further study. 3. The population of soil microorganisms was increased in all plot during the period and that it was sparser in the plot 1 than any other ones, ones decreased in all after harvest.

不良 갯수의 分布에 대한 檢査過誤의 영향

李鍾盛,安世熙 강원대학교 산업기술연구소 1984 産業技術硏究 Vol.4 No.-

This paper presents a proof that b(r;n, ppd) is the appropriate distribution of the number of observed defects When inspector errors are present. And the effect of inspector errors on the probability of type 1 and type 2 errors is discussed.

소독액의 B형 간염바이러스 표면항원에 대한 억제효과

이세종,임미경 大韓齒科保存學會 1994 Restorative Dentistry & Endodontics Vol.19 No.1

협업 여과 기반의 교육용 컨텐츠 추천 시스템 설계

이용준,이세훈,왕창종 한국컴퓨터교육학회 2003 컴퓨터교육학회 논문지 Vol.6 No.2

협업여과는 흥미 있어하는 제품이나 개인화된 자료, 항목을 제공하기 의해 전체 집단의 의견을 반영하는 전자상거래에서 일반적으로 이용되는 기술이다. 협업여과는 정확하고 신뢰할 수 있는 도구로 입증되어 여러 분야의 전자상거래 영역에서 활용되고 있으나 아직까지 교육분야에는 한정적으로 적용되고 있다. 본 논문에서는 교육용 컨텐츠 추천에 사용자의 평가 점수를 이용하는 협업여과 방식의 추천시스템을 설계하였으며, 사용자 정보를 이용하여 추천의 정확도를 향상시키기 위한 유사도 보정기법을 도입하였다. 평균절대오차(MAE)와 반응자작용특성(ROC)값을 이용하여 제안한 시스템이 기존의 협업여과방식보다 추천 효율이 우수함을 검증하였다. Collaborative Filtering is a popular technology in electronic commerce, which adapt the opinions of entire communities to provide interesting products or personalized resources and items. It has been applied to many kinds of electronic commerce domain since Collaborative Filtering has proven an accurate and reliable tool. But educational application remain limited yet. We design collaborative filtering recommendation system using user's ratings in educational contents recommendation. Also We propose a method of similarity compensation using user's information for improvement of recommendation accuracy. The proposed method is more efficient than the traditional collaborative filtering method by experimental comparisons of mean absolute error(MAE) and reciever operating characteristics(ROC) values.

관상동맥 시술 도중 발생한 좌주간부 관상동맥 박리에 대한 스텐트 삽입 치료의 단장기 임상 결과 : acute and long-term results

이세환,이승환,홍명기,김영학,이철환,한기훈,송종민,강덕현,송재관,김재중,박성욱,박승정 대한내과학회 2004 대한내과학회지 Vol.66 No.6

목적 : 심도자 사용 시술과 관련된 좌주간부 관상동맥박리에 대한 적절한 치료는 아직 확실히 정립되지 않은 상태이다. 이에 본 연구는 좌주간부 관상동맥 박리에 대한 스텐트 삽입술의 단장기 임상결과를 후향적으로 분석하였다. 방법 : 좌주간부 관상동맥 박리에 대한 치료로 즉각적인 스텐트 삽입술을 시행하는 것이 안전하고 효과적인 방법임을 가설하였고, 이러한 즉각적인 스텐트 삽입을 시행한 10명의 환자를 대상으로 단장기적 임상경과를 의무기록 고찰과 전화 면담을 통해서 평가하였다. 결과 : 전체 환자 모두 처음부터 좌주간부 관상동맥에 유의한 협착을 가진 환자는 없었으며, 8명의 환자는 심도자의 조작으로 인한 박리가 발생한 경우였고(진단적 혈관 조영술 중에 3명, 유도 도자 조작 중에 5명), 나머지 2명은 다른 병변에 스텐트 삽입시술을 하는 중에 박리가 발생하였다. 이 10명의 환자에서 모두 즉각적인 스텐트 삽입술이 시행되었고, 4명의 환자에서 시술 도중 혈압 저하로 Intra-aortic Ballon Pump (IABP)를 장착하였다. 모든 환자에서 성공적으로 스텐트가 삽입되었고, 병원내 사망은 1명도 없었다. 6개월 추적 관상동맥 조영술은 8명의 환자에서 시행되었다. 혈관 조영상의 재협착(직경 협착 50% 이상)은 8명 모두에게서 관찰되지 않았으며, 퇴원 후 평균 31±25개월의 추적관찰 결과 주요 심장사건은 1건도 발생하지 않았다. 결론 : 비록 대상 환자가 적은 연구였지만 좌주간부 관상동맥 박리에 대한 스텐트 삽입술은 기술적으로 안전하고 빠르게 시행 할 수 있으며, 훌륭한 단장기적인 치료 효과를 보여준다. Background : The optimal treatment of patients with left main coronary artery (LMCA) dissection during catheter-based procedure remains uncertain. We retrospectively analyzed the acute and long-term results of bail-out stenting for LMCA dissection. Methods : In cases with significant LMCA dissection occurring during catheter-based procedure, prompt stent implantation may be safe and associated with favorable clinical outcome. We evaluated the acute and long-term results of bail-out stenting for LMCA dissection occurring during catheter-bases procedure in 1- patients. Results : Initially, there was significant stenosis of LMCA segment in these patients. Catheter-induced dissection occurred in 8 patients (during diagnostic angiography in 3 patients and guiding catheter manipulation in 5 patients). Two patients suffered dissection in the setting of stent deployment in other vessels. Therefore, bail-out stenting LMCA dissection was performed in a total of 10 patients. In 4 patients, hypotension developed and intra-aortic balloon pump was placed during procedure. Stents were successfully deployed in all patients. There was no in-hospital mortality. Six-month angiographic follow-up was performed in 8 patients. Angiographic restenosis(diameter stenosis 50%) was not observed in all patients at follow-up study. During a mean follow-up of 31±25 months after hospital discharge, there was no major adverse cardiac event (death, myocardial infarction, and target lesion revascularization). Conclusion : Bail-out LMCA stenting is technically feasible, and showed good acute and long-term results in a small series of patients.

Jones Jig를 이용한 하악 제 1 대구치 원심이동의 치험례

이상민,한세현,김종범 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3

The first permanent molar takes important place in the occlusion. Malposition of the lower first molar is frequently due to mesial migration, which is occurred by early exfoliation of the second deciduous molar or proximal caries of deciduous teeth. Above things happen without any consideration of space maintainer, prompt measures for space regaining have to be started. Especially in the case with early loss of the second deciduous molar, it has been said that there is no suitable appliance for maintaining the space before the eruption of the permanet first molar. In distalizing the upper first molar, headgears have been routinely used, which its resrlt was definitely depended on cooperation of the patients. Nowadays, appliances such as pendulum appliances, K-loop, magnets, which can be used without cooperation of the patients, are introduced. Jones Jig, one of the molar distalizing appliances, was used on the patients who visited department of pediatric dentistry in Seoul National University Dental Hospital complaining of no eruption space for the lower second bicuspid. Either removable splint or lingal arch was used as the anchorage. Jones Jig was favorably used in the lower molar, where vestibule is shallow, and this is a case report on the satisfactory result thereof.

Bi계 고온 초전도체의 Flux Pinning Cener의 연구

이세종 慶星大學校 1998 論文集 Vol.19 No.1

It has been investigated the effect of excess amount of Ca and Cu on the formation of Bi-2223 superconducting phases. MgO particles are also added as flux pinning sites in the Bi based material and observe their effect on the superconducting properties. Heat treatment are varied to see the influence of the experimental factors in terms of temperature and duration time. Results are analyzed by the X-ray diffraction, SEM and measurements of superconducting properties including critical current density.

이집트 사상가 '리파아 알따흐따위'의 생애와 사상연구

李鍾澤,張世元 명지대학교 리서치아카데미 2001 리서치 아카데미 논총 Vol.4 No.-

하치조신경 및 설신경 손상 평가를 위한 한국인 정상 성인의 하순-이부 및 혀의 감각 조사

이종호,이세영,송승일,이은진,안강민,김성민,명훈,황순정,서병무,최진영,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

In the head and neck area, there are so many sensory nerves, which are sometimes injuried iatrogenically or inadvertently so that involved patients complained of the loss of sensations. In such cases, it is important to judge the degree of injuries and regeneration of nerve for better diagnosis and treatment. Seddon and Sunderland's classification, which is commomly used, is focused on histological change and nerve conduction. As times goes by, it is difficult to access patient's sensory disturbance by this method. Until now, so many methods such as contract threshold, direction, two-point discrimination, pin prick, thermal discrimination and current perception threshold have been introduced for sensory evaluation. However, there hasn't been enough information regarding each methodology nor integrated standard methodology for the measurement. the purpose of this study is to get Korean adult normative sensory values of lower lip,chin and tongue using modified methods of contact thershold, ditection, two point discrimination, pin prick, thermal discrimination and assess degree of regeneration of sensory nerve damage.