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박현건,성낙창,김형갑,서주수,이상용 진주산업대학교 1991 論文集 Vol.29 No.-
1. 單獨處理에 비해 倂合處理가 汚染負荷量으로 볼때 평균 약 31.1%의 더 높은 제거 효율을 얻을 수 있었다. 2. 下水道 流入 BOD 평균농도는 單獨處理時에 BOD 147.5㎎/l~160㎎/l정도인데 비해 倂合處理는 BOD 91㎎/l~100.8㎎/l을 나타내었다. 3. 家庭汚水를 무단방류하는 것보다 倂合處理를 하므로서 水系의 水質改善을 기여하였다. 4. 가능한 淨化槽는 실제 住居人口數보다 容量이 큰 것을 設置토록 하는 것이 좋다. This sutdy was performed in order to evalulate the purification of domestic sewage through single(nightsoil) and combined(nightsoil+domestic sewage) treament. The result of single and combined treatment are as follows: 1. The removal efficiency of BOD loading in Combined treatment was 31.1% more than that of single treatment. 2. The average concentratron of effluent BOD was 147.5㎎/l~160㎎/l in single treatment but 91㎎/l~100.8㎎/l in combined treatment. 3. Combined treatment contributes to improving the quality of water than direct discharging domestic sewage does. 4. It is desirable that, if possible, we should install a bigger septic tank than the volume which the actual residents need.
이수형,이철목,박상배,이평기 위덕대학교 산업기술연구소 2000 산업기술연구소 논문집 Vol.4 No.1
최근 능동 소나에서는 표적의 탐지 성능을 향상시키기 위하여 "높은 시간-대역폭곱"의 파형들을 사용한다. 표적까지의 거리와 표적의 속도를 추정하는 방법으로 FFT-기반 상관관계 기법이 많이 사용되고 있으나, 다중경로 환경에서는 운용자의 요구를 만족하기에 충분한 결과를 나타내지 못하고 있다. 본 논문에서는 다중경로 환경에서 직접경로 신호의 도플러 변이와 도달시간의 탐지 정확도를 높이기 위한 새로운 기법을 제안하였다. In modern active sonar, so-called "high time-bandwidth product" waveforms are used to obtain processing gain for improved detection performance. FFT-based correlation processing is used to detect doppler shift for velocity of target and arrival time, but obtained results are not enough to satisfy the operational needs in multipath environment. In this paper, the new algorithm is proposed in order to improve detection accuracy of doppler shift and arriving time of direct path in multipath environment. It is achieved since the replica is made with considering multipath.
안형수,장안수,이준혁,박성우,고은석,백상현,박재성,허균,신화균,박춘식 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
We report a case of a sclerosing hemangioma of the lung with increased size during follow up, a rare benign neoplasm of the lung. A 32-year-old woman had round increased opacity in right upper lobe on posteroanterior chest radiograph. That lesion has grown slowly over four years. Computed tomographic scan showed a well circumscribed lung mass in medial aspect of right upper lobe. Radiological differential diagnosis for the lesion included inflammatory pseudotumor, atypical carcinoid, lung cancer and localized fibrous tumor of pleura. Nonspecific findings were shown by the bronchoscopy and percutaneous transthoracic needle aspiration. Anterior and apical segmentectomy was carried out and the lesion was pathologically diagnosed as sclerosing hemangioma of lung.
경기도 일부 중학생의 체질량지수 및 성별에 따른 식생활 습관 및 영양소 섭취상태에 관한 연구
전형수;박용순 한양대학교 2007 韓國 生活 科學 硏究 Vol.27 No.1
Aim of this study was to investigate whether middle school students with different body mass index (BMI) and sex were different in their lifestyles and nutrient intake. Middle school students (n=408) in Gyenggi-do were participated in this stsudy. Height, weight and BMI of female students were 159.6㎝, 50.4㎏, and 19.7 ㎏/㎡, and those of male students were 165.5㎝, 57.7㎏ and 20.9㎏/㎡, respectively. Classified by BMI, there were 30% underweight, 51% normal, and 18.9% overweight. Reading time of underweight group was significantly shorter than those of overweight. More underweight students thought themselves healthier and had more appetite than overweight subjects. Male students used computer significantly longer and ate more on time, but had more unbalanced diet than females. Male students consumed more calorie, protein, vegetable protein, vegetable fat, carbohydrate, sodium, vitamin B1. Intakes of fiber and calcium were lower than the Dietary Reference Intakes for Koreans for that age group. Our results suggested that students had meal not on time, unbalanced diet, and meal too fast. Intakes of protein, fat, and sodium were higher, but intakes of calcium and fiber were too low. Those may cause serious health problem. Thus, students and health care providers should recognize the problems and develop education programs to help students to keep proper life style and eating habits.
잔향 환경에서 표적탐지 성능향상을 위한 능동소나 음원 형성기법 연구
이철목,박도현,이수형 위덕대학교 산업기술연구소 2001 산업기술연구소 논문집 Vol.5 No.1
천해에서 능동소나 운용시 잔향에 의해 표적탐지 성능이 심각한 영향을 받게 되므로 잔향의 영향을 최소화하기 위한 음원 형성기법에 대한 연구가 활발히 진행되고 있다. PTFM(Pulse Train Frequency Modulation) 신호는 CW 신호의 도플러 제거 특성과 LFM 신호의 넓은 대역폭 특성을 이용하여 잔향의 영향을 최소화하기 위해 고안된 펄스이다. 본 논문에서는 펄스의 종류에 따른 탐지성능을 분석할 수 있는 음향모델을 이용한 성능분석모데를 이용한 성능분석모델을 구현하였으며, 이를 이용하여 일반적인 능동소나의 송신신호와 PTFM 신호의 잔향제한 환경에서의 탐지성능을 분석하였다.
농부가 아닌 환자에서 발생한 긴털가루진드기(Tyrophagus Putrescentiae)에 의한 기관지천식 1례
최대로,김형수,고창옥,김희선,윤호성,박용범,김상훈,이재영 대한천식 및 알레르기학회 2004 천식 및 알레르기 Vol.24 No.1
Storage mites are believed one of the most important allergens in farmers and rural regions. Tyrophagus putrescenitiae, belonging to storage mites, is found not only within storehouses but also in the house dust, and the third most common mites following Dematophagoides farinae and Dermatophagoides pteronyssnus in house dust in Korea. The sensitization rate to Trophagus putrescentiae was reported as high as that of house dust mite in patients visiting the allergy clinic in large cities in Korea. We experienced a 69-year-old man who had suffered from dyspnea, wheezing, and coughing for 10 years. He retired from the teaching profession, and had lived in a large city. Deajeon. The skin prick test showed a positive reaction to Tyrophagus putrescentiae and negative reactions to house dust mites. The bronchial challenge test with Tyrophagus putrescentiae showed late asthmatic reaction. We confirmed a Tyrophagus putrescentiae induced asthma in non occupational setting. (J Asthma Allergy Clin Immunol 24 : 141-5, 2004)
이철목,이수형,박상배 위덕대학교 산업기술연구소 2000 산업기술연구소 논문집 Vol.4 No.1
본 논문에서는 다중 3차원 근거리표적의 위치를 효과적으로 추정하는 기법을 제안하였다. 제안한 기법은 세 개의 부분센서배열을 이용하여 기존의 3D MUSIC에서의 3차원 탐색을 3번의 1차원 탐색으로 대치함으로써 연 산량을 감소시켰다. 각각의 부분센서배열에서 얻은 센서신호로부터 표적이 원거리에 있다고 가정하고 원거리 입체각을 추정하면 추정된 입체각은 실제 근거리 표적의 위치인 방위각, 고각, 거리의 함수로 주어진다. 그러므로 세 개의 부분센서배열로부터 얻은 세 개의 함수를 연립하여 풀면 실제 근거리표적의 위치를 추정할 수 있다. 또 한 다중 표적의 경우, 추정치에 대하여 3차원 MUSIC 스펙트럼값을 비교함으로써 연관 문제를 해결하였다. In this paper, we are proposing an efficient 3D source localization algorithm using 3 uniform linear subarrays. The proposed algorithm replaces 3D search required in conventional 3D MUSIC algorithm with 3 1D searches, and thus reduces computational burden. The estimate of the 1D conic angle obtained from a subarray under the far-field assumption satisfies a nonlinear algebraic equation of the true source bearing angle, elevation angle, and range. The proposed algorithm estimates source location by solving 3 algebraic equations obtained from 3 subarrays. Comparing 3D MUSIC spectrums of the estimated source locations, the proposed algorithm solves pairing problem for multiple sources localization.