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박준수(Joon Soo Park),편복양(Bok Yang Pyun),김영통(Young Tong Kim) 대한소아알레르기호흡기학회 1997 소아알레르기 및 호흡기학회지 Vol.7 No.2
Asthma is a common disease in children. However, CT findings in childhood asthma are rarely reported. Several authors reported CT findings in adult: bronchial wall thickening, bronchiectasis, mucoid impaction, acinar pattern, lobar or subsegmental collapse, air-trapping, or emphysema. We have studied three cases of HRCT findings in childhood asthma, and HRCT findings included bronchial wall thickening, bronchial dilatation, patchy air-space consolidation, ill-defined acinar nodules, centrilobular nodule, subsegmental atelectasis, and multiple focal areas of lobular air-trapping or mosaic perfusion pattern. These above findings are similar to those of adult. A Brief review of related literature was presented.
박준수(Joon-Soo Park) 한국해양공학회 2013 韓國海洋工學會誌 Vol.27 No.6
This paper presents a sea surface reconstruction method that uses measured radar images by applying filtering techniques and identifying wave characteristics of the surrounding the Ieodo ocean research station using WaveFinder (X-band wave measurement radar), which is installed in the station. In addition, the results obtained from real radar images are used to verify the reconstructed sea surface. WaveFinder is a marine system that was developed to measure wave information in real time. The WaveFinder in the station could acquire sequent images for the sea surface at constant time intervals to obtain real time information (Wave height, mean wave period, wave directionality, etc.) for the wave by getting a three-dimensional spectrum by applying an FFT algorithm to the acquired sequent images and wave dispersion relation. In particular, we found the wave height using the SNR (Signal to noise ratio) of the acquired images. The wave information measured by WaveFinder could be verified by comparing and analyzing the results measured using the wave measurement instrument (Sea level monitor) in the station, Additionally, the wave field around the station could be reconstructed through the three-dimensional spectrum and the inverse FFT filtering from the analyzed results for the measured radar images. We verified the applicability of the sea surface reconstruction method by comparing the measured and simulated sea surfaces.
Shrunk-on Type 저압 터빈 로터의 가동중검사를 위한 초음파검사 시스템 개발
박준수(Joon-Soo Park),성운학(Un-Hak Seong),유승우(Sung-Woo Ryu) 한국비파괴검사학회 2009 한국비파괴검사학회지 Vol.29 No.2
터빈은 원자력발전소의 주요기기로서 고온ㆍ고압하에서 고속회전으로 인해 신뢰성 있는 검사가 요구된다. 터빈의 가동중검사의 경우 블레이드가 조립된 상태에서 검사가 수행되며 구조적 복잡성으로 인하여 탐촉자의 접근이 제한되며, 신호 해석이 매우 어렵다. 본 연구에서는 신뢰성 높은 신호해석을 위하여 실제 터빈과 크기 및 형상이 동일한 mock-up을 제작하였다. 터빈의 key와 내표면부의 결함탐상을 위해 pulse-echo 및 TOFD 기법을 개발하였고, dovetail 검사를 위하여 위상배열 초음파탐상기법을 개발하였다. 개발된 기법들을 가동중 터빈 검사에 효율적으로 적용하기 위해 자동화 검사 scanner를 제작하였으며, 현장적용을 통하여 신뢰성을 검증하였다. Turbine, which is one of major components in nuclear power plants, requires reliable nondestructive inspections. But, accessibility of transducers is limited and interpretation of acquired signals is not easy at all due to the complication. So, in this study, we have fabricated mock-up specimens of real size and shape. we applied pulse-echo method and time-of-flight diffraction(TOFD) method for precise inspection of turbine key and wheel bore. And phased array ultrasonic testing method was adopted for wheel dovetail of turbines by using mock-up. Furthermore, an automatic scanner system was developed for in-service inspection of the developed methods.
토출관 접합계면의 비파괴 검사를 위한 초음파 기법 개발
박준수(Joon Soo Park),송성진(Sung-Jin Song),김영환(Young H. Kim),석창성(Chang-Sung Seok) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.8
In the present work, ultrasonic testing method has been developed to evaluate adhesive layers in rocket motor case assembly for the reliability of the rocket. The main objective of the present work was to find debonding and uncharged state between steel and FRP layers, We distinguish the debonding and uncharged state using the resonance method in the adhesive layers, It was found that the higher magnitude of ultrasound is reflected for the uncharged area in frequency domain, and shown good agreements with experimental results, The traditional ultrasonic pulse-echo method offers good implements for the distinction debonding area, The nondestructive testing results were compared with the micrography of destruective testing, As results, ultrasonic testing could be utilized for the evaluation of adhesive layer in the rocket motor case assembly
박준수(Joon-Soo Park) 한국엔터테인먼트산업학회 2014 한국엔터테인먼트산업학회 학술대회 논문집 Vol.2014 No.11
본 연구는 교육시설 복합화를 통해 학교가 학생들뿐만 아니라 지역주민이 같이 공유할 수 있는 열린 공간으로 인식되어지고 있는 시점에서 평생교육을 위한 학교시설 복합화의 문제점과 앞으로 개선되어야 되는 사항들을 파악하였다. 본 연구는 학교시설 복합화의 현 상황과 개선사항들을 검토하는데 큰 무리가 없을 것이라고 판단된다. 또한, 지역주민을 대상으로 평생교육시설의 활용 방안의 기초 자료제공에는 수월하지만, 학교시설 복합화의 전체적 개선방향을 제시하는 데는 한계를 느낀다. 하지만 학교시설의 복합화에서 평생교육시설을 보다 적극적으로 활용함에 있어서 지역주민들에게 기존의 타 교육시설에서 행해지는 활동들을 학교에서 대신함으로 앞으로 프로그램과 실의 이용을 대상으로 연구가 이루어져 학교의 공공성을 좀 더 높일 수 있다는 점에서 볼 때 타 연구와 차별성을 가질 것으로 사료된다. This study grasps problems of mixed-use of school facilities for lifelong education and matters that shall be solved at a point in time a school is recognized as an open place that can be shared by local residents besides students through the mixed-use of educational facilities. We think that it is not quite impossible to examine the current situation and improvements of the mixed-use of school facilities. Besides, it is easy to provide baseline data on a plan of utilizing the lifelong educational facilities for local residents, but, we judge that this study has a limit in showing the overall improvement direction of mixed-use of school facilities. However, it is thought that this study is differentiated from other studies, considering that a study on the use of room and program will be carried out and the public service of school can be more increased in the future because activities having been performed in other conventional educational facilities for local residents will be performed in a school instead of those in more actively utilizing the lifelong educational facilities in the mixed-use of school facilities.
일측성 신장 무발생(Unilateral Renal Agenesis)을 동반한 과다유두(Supernumerary Nipple)
박준수 ( Joon Soo Park ),정현 ( Hyun Chung ),장효찬 ( Hyo Chan Jang ),정기훈 ( Ki Hun Chung ),이민중 ( Min Jung Lee ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.11
Supernumerary nipple is a developmental anomaly that occurs along the course of the embryological milk lines. The prevalence appears to be higher in women and a wide range of congenital and hereditary anomalies have been described in association with supernumerary nipple, including cardiovascular, gastrointestinal, skeletal and neurologic anomalies, and especially renal and urinary tract anomalies. However, there has been no report of supernumerary nipple with renal anomalies in the Korean dermatologic literature. Herein, we report on an interesting case of a supernumerary nipple with unilateral renal agenesis in a 15-year old man. (Korean J Dermatol 2010;48(11):1008∼1011)