연제 및 초록 : 일반연제 ; 과민성 기도질환에서의 Methacholine 검사 성적

박필원,홍천수,이현철,이상용,김원호,하성규 대한천식 및 알레르기학회 ( 구 대한알레르기학회 ) 1982 대한알레르기학회학술대회 Vol.2 No.2

알레르기성 비염환자에 있어서의 Methacholine 검사에 관한 연구

박필원,정영,홍천수,허갑범,이원영,이상용 대한천식알레르기학회 1981 천식 및 알레르기 Vol.1 No.2

We studied methacholine challenge response in 29 patients with allergic rhinitis. Fourteen wer males and 15 females with ages from 16 to 52(mea n 32. 5) years. The perennial symptom was noted I n 14 and season a l symptom I n 3. The symptom ur st ion was less than 1 year in 12, 1 to 5 years in I and more than 5 years in 5. Using CPI 5, 000 II Pulmol ab System, the FEV, and FEF:, were measured 5 minutes after 5 inh a lations cf saline and methacholine solution(25mg/ml) with nebulizer Devilbiss No. 14 after initi al baseline Pulmonary function tests. The challenges of methacholi ae were repeated 4 times more (Total 25 inhalatio ns) in maximum except for the patiente resulting severe respiratory distress. The results obt aine d were as follow: The patient s of methacholine response(% fall of FEV,>15 %) could be divided into 4 gro ups. (Fig. 2) a) Group I (9 pstients): No response b) Group II (10 paitents): Response to large does (20 - 25 inhalations) c) Group g ( 5 pstients): Response to medium dose (5- 1 5 inhalations) with plsteau slope on further challenges. D) Group III (5 patients): Response to small dose with severe pulmonary distress on further challenges 2. In genersl the % fall of FEF,In methacholine challenge was more marked than that of FEV,. The 7 fall of FEF In Group II was earlier and more marked than that of FEV,. (Fig. 3) 3 , There was not significant difference in the age of onset, symptom dur ation, total eosinophil counts, serum IgE(PRIST) and the findi ngs af sputum eosin ephils between groups. 4. Response to rnethacholine challenge was more significantly remarkable in pati ents with chest symptoms. All patients I n Group IV had dyspnea cf some degree but none in Group I.

항생제에 대한 세균학적 감수성시험방법에 관한 비교실험 : Tetracycline , Neomycin 및 Colistin

박필원,김영자 대한미생물학회 1974 大韓微生物學會誌 Vol.9 No.1

A comparative study was performed with 176 cultures of Salmonella organisms on tetracyline, neomycin and colistin in order to find out the re1ationship between the results obtaiaed from the Ericssons single disk method and the tube dilution method of antibiotie sensitivity tests which may be carried out in many hospital laboratories. With tetracycline, thirty-three out of 163 cultures of Salmonella typhi were found to be either sensitive or moderate sensitive by meaas of the disk method and thirty one (ca 94%) out of the thirty three cultures showed less than I. 0㎍ of the Minimal Iahibitory Concentretions (MIC) in the tubedilution tesis, which mean that there were a quite good agreement between the two methods. With neomycin, a hundred and five out of 163 S.typhi werc appeared to be either sensitive or moderate sensitive by means of Ericssons single disk method, among which 103 cultures showed less than 10. 0 ㎍ MIC in the tubedilution method. And also there was a quite correlative pet- terns observed in theesult of testing with 13 salmoaella cultures other than S. typhi. With colistin, it was hard to observe any particular tendency in the distribution of plotting for 148 cultures showing less the 18 mm is the inhibiting zone diameters between MIC and disk sensitivity patterns except the fifteen, cultures out of 176 salmanella, which appeared to be sensitive in the single disk method and showed less than 1. 0㎍ MIC in the tube dilution method.

Proposal of Collective Handover Processing Method Utilizing Network Mobility(NEMO) in SDN environment

박필원,민성기 아이씨티플랫폼학회 2016 JOURNAL OF PLATFORM TECHNOLOGY Vol.4 No.2

NEMO is a mobility management theory for processing large scale handovers. It was proposed on the basis of Mobile IP but various research was done to make it possible to utilize in various environments. SDN is a network in which the program with the control plane and data plane separated is possible, and it is a network structure that conducts centralized management. OMM, a variation of the PMIPv6 to suit the SDN environment, was made to operate over the controller after regarding management functions as one application. This paper proposes a large scale handover processing theory that applies the NEMO technique in an OMM environment. WThrough this, we propose processing collective handovers by processing MN’s collective handovers as network topology changes in SDN environments. Furthermore, the proposed theory reduced overheads. Also, the fundamental SDN structure was kept and more efficient data forwarding was made possible by utilizing the technique used in OMM.

韓國型出血熱의 死因분석과 그 치료대책

全鍾暉,朴弼遠 대한감염학회 1970 감염 Vol.2 No.1

유행성출혈열 중에서도 한국형은 극동형출혈옆에 속하여 있고 현시에 있어서도 환자발생수가 많고 치명율이 높은 점에서 또 더욱이 병원체나 그 전염경로, 또는 매개충들이 아직 구명되지못한 사실들로서 의학계의 주목을 끌고 있다.

컬러 이미지 분석을 통한 블랙 아이스 검출 방법 연구

박필원,한성수 아이씨티플랫폼학회 2021 JOURNAL OF PLATFORM TECHNOLOGY Vol.9 No.4

현재 개발중인 그리고 운행중인 대부분의 자동차에는 다양한 IoT 센서들이 탑재되어 있지만, 자동차 사고를 일으키는 요인 중 몇몇 요인들은 상대적으로 탐지하기 힘들다. 이러한 요소 중 대표적인 위험 요인 중 하나가 블랙 아이스이다. 블랙 아이스는 블랙 아이스가 깔린 부분을 지나가는 모든 차량에 영향을 줄 수 있어 대형 사고를 유발할 가능성이 가장 높은 요인 중 하나이다. 따라서 대형 사고를 막기 위해 블랙 아이스 검출 기법은 꼭 필요하다. 이를 위해 몇몇 연구가 과거 진행되었으나 몇몇 부분에서 현실적이지 않는 요소들이 반영된 경우가 있어, 이를 보충하기 위한 연구가 필요하다. 본 논문에서는 CNN 기법으로 컬러 이미지를 분석하여 블랙 아이스를 탐지하고자 하였으며, 일정 수준의 블랙 아이스 탐지에 성공하였다. 다만 기존 연구 와 차이가 있어 그 이유를 분석하였다.

무선 센서 네트워크에서 멀티 홉 커뮤니케이션을 이용한 자가배치

박필원(Park Pill-Won),한연희(Youn Hee Han),민성기(Sung-Gi Min) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.11

챗봇의 의도 예문 자동 입력을 위한 Text-CNN 기반 의도 분류 방법

박필원(Pill-Won Park) 한국정보기술학회 2020 한국정보기술학회논문지 Vol.18 No.1

In this paper, we propose how to automatically categorize and generate examples of given intents using Text-CNN in order to increase the inference rate of the existing chatbot framework. The Intent Classification System uses Text-CNN to learn data consisting of word vectors and position vectors for each prepared sentence through the preprocessing process. The proposed Text-CNN structure has a construction layer, a max pooling layer, and a fully connected soft max layer as its output. In addition, dropout is applied to perform regularization. For the experiment, a total of 9,000 sentences were collected using webscraping. An experiment showed that the accuracy obtained from Text-CNN’s learning of kitchen intents was about 94%. The rest of the sentences, not labeled with the model produced by Text-CNN, were grouped and 63 cases of cooking were extracted in total and the sentences were input in Chatbot.

German Credit Risk 데이터를 사용한 머신러닝 모델의 단계별 요소들이 AI 모델의 성능에 미치는 영향 분석

박필원(Pill-Won Park) 한국정보기술학회 2022 한국정보기술학회논문지 Vol.20 No.11

Machine learning is used in various fields, and various algorithms have been developed according to the type and purpose of data. The performance of the machine learning model is affected by the step-by-step setting even if the same algorithm is used, and research on this is needed. However, studies on the effects of specific procedures or specific parameters on the model have been conducted, but studies that comprehensively analyze them have been insufficient. In this paper, after summarizing the processing steps required to develop the machine learning model, the effect of each step on the performance of the machine learning model was analyzed. Processing steps were divided into steps of data purification, algorithm selection, hyper-parameter adjustment, and verification ratio adjustment, which were measured using Kaggles German credit risk data and machine learning automation tools.

나노/마이크로 디그리를 제공하기 위한 네트워크 기반 교육 플랫폼 설계

박필원 ( Pill-won Park ) 한국정보처리학회 2021 한국정보처리학회 학술대회논문집 Vol.28 No.2

최근 대학교는 코로나로 인하여 교육에 언택트를 접목시킬 것과, 학생들에게 필요한 전문지식을 단기간에 효율적으로 습득시킬 것을 요구받고 있다. 이를 위해 학교들은 온라인 교육 플랫폼을 구성함과 동시에, 고효율 교육방법으로서 모듈형 교육과정을 개발하고 있다. 하지만 모듈형 교육과정은 기존 교육과정과 다른 부분이 있어 기존에 활용하던 온라인 교육 플랫폼으로는 모듈형 교육과정을 온전히 제공하기 힘들다. 따라서 본 논문에서는 다양한 국내외 온라인 교육 플랫폼을 조사하여 교육에 필요한 기능들을 정리하였다. 또한 다수의 동영상, 퀴즈, 실습, 과제, 그리고 프로젝트로 구성된 모듈형 교육과정을 가정하고 이를 활용하기 위한 기능들을 도출하였다. 이를 기반으로 모듈형 교육과정용 플랫폼의 기능별 구성, 구성요소별 연결 방식, 활용 시나리오를 제안하고, 온라인 기반 모듈형 교육과정 플랫폼을 보다 효율적으로 활용할 수 있을 것으로 생각되며, 향후 모듈형 교육과정을 제공하기 위한 기반을 구성할 수 있을 것으로 생각된다.