Clustered 데이타 흐름 그래프의 성능평가에 관한 연구

유관종,변승환 충남대학교 1991 忠南科學硏究誌 Vol.18 No.1

This paper is to evaluate the performance for the Partitioning Data Flow Graph. For the simulation, the input is a Partitioned Data Flow Graph and the target machine is a modified MIT Data Flow System. The goal of the performance evaluation is to compare between clustering data flow graph and no clustering data flow graph and to see the throughput between one PE and n PE in clustered data flow graph.

NaOH 수용액상에서 주석의 침출에 관한 연구

안종관,박인수 대진대학교 첨단소재연구소 1999 첨단소재연구소논문집 Vol.2 No.-

The leaching removal of tin in ferrous scrap by hydrometallurgical processes was performed using rotating disc geometry in NaOH solution. Leaching behaviors of tin were studied by varying the factors : concentration of ammonia, ammonium sulfate and NaOH, temperature, oxygen pressure and rotation speed. The leaching rate of tin disc in the NaOH solutions were proportion to rpm which indicated that the rate would be controlled by mass transfer through diffusion boundary layer.

양성 백악아세포종의 치험례

김종배,박효상,최봉주,이용규,남동석,박관수 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.2

Benign cementoblastoma is uncommon odontogenic tumor of the jaw of mesenchymal origin. It is common in male below 25 years of age, commonly occurs in mandibular molar and premolar area. Principal symptom is painless swelling. Radiologically, radiopaque mass is fused with a root or roots of teeth, surrounded, and limited peripherally by a radiolucent halo. Histologically, the tumor is composed of sheets of an osteocementum like material with basophilic reversal line. Because of unlimited growth potential, the usual treatment is complete surgical excision with extraction of the associated teeth. The patient, 16-year old male, was admitted to our hospital with chief complaint of painless swelling on right mandible body area. Surgical excision of lesion and extraction of associated tooth was performed. On follow up check, we obtained good result without any signs of recurrence of the lesion.

SnO₂/Si 移種接合 太陽電池 特性에 관한 硏究

朴鏞寬,李載亨,金正浩,兪榮植 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.1

In this study, the SnO_2/(n)Si solar cell was fabricated by electron beam evaporation method, and their properties were investigated. Also the resistivity and optical transmission of SnO_2 thin film were measured, and the relations between this results and solar cell characteristics were considered, and the following conclusions were obtained. (1) In proportion to increase of substrate and annealing temperature, the conductivity of SnO_2 thin film becomes increasing, but its optical transmission decreases because of increasing optical absorption of free electrons in the thin film. (2) Solar cell characteristics were improved by annealing. But the SnO_2/Si solar cell was deteriorted by heat treatment above 500℃. (3) The optimal outputs of SnO_2/Si solar cell through above investigation were V_sc: 350mV, I_∝: mA/㎠, FF : 0.41, η=4.74%

工作機械 主軸의 振動모우드 特性을 考慮한 加工精密度 豫側을 爲한 實驗的 硏究

김종관,김상복 조선대학교 생산기술연구소 1995 生産技術硏究 Vol.17 No.2

This study is for the purpose of contributing to improvement of the spindle speed and machine tool precision through an experimental evaluation of the relation between bending vibration mode characteristics of spindle and machining precision by measuring natural frequencies and bending vibration modes of spindle through FFT analyzer, and by analyzing these characteristics by means of computer program under the rotational and irrotational condition, and precision cutting test. From this, it is possible to predict and improve the spindle speed and the precision of machine tool.

정중운동신경과 척골운동신경의 전기생리학적 연구

김종순,이현옥,안소윤,구봉오,남건우,김영직,김호봉,류재관,류재문 대한정형도수치료학회 2005 대한정형도수물리치료학회지 Vol.11 No.2

The determination of peripheral nerve conduction velocity is and important part to electrodiagnosis. Its value as neurophysiologic investigative procedure has been known for many years but normal value of median and ulnar motor nerve was poorly reported in Korea. To evaluate of median and ulnar motor nerve terminal latency, amplitude of CMAP(compound muscle action potential), conduction velocity and F-wave latency for obtain clinically useful reference value. 71 normal volunteers(age,19-65 years;142 hands) examined who has no history of peripheral neuropathy, diabetic mellitus, chronic renal failure, endocrine disorders, anti-cancer medicine, anti-tubercle medicine, alcoholism, trauma, radiculopathy. Nicolet Viking Ⅱ was use for detected terminal latency, amplitude of CMAP, conduction velocity and F-wave latency of median and ulnar motor nerve. Data analysis was performed using SPSS. Descriptive analysis was used for obtain mean and standard deviation, independent t-test was used to compare between Rt and Lt side also compare between different in genders. The results are summarized as follows: 1. Median motor nerve terminal latency was right 3.00ms, left 2.99ms and there was no significantly difference between right and left side and genders. 2. Median motor nerve amplitude of CMAP was right 17.26mV, left 17.50mV and there was no significantly differences between right and left side and genders. 3. Median motor nerve conduction velocity was right 57.89m/sec, left 58.03m/sec and there was no significantly difference between right and left side and genders. 4. Median motor nerve F-wave latency was right 25.74ms, left 25.59ms and there was significantly differences between genders. 5. Ulnar motor nerve terminal latency was right 2.38ms, left 2.45ms and there was significantly differences between right and left side. 6. Ulnar motor nerve amplitude of CMAP was right 15.99mV, left 16.02mV and there was no significantly differences between right and left side and genders. 7. Ulnar motor nerve conduction velocity was right 60.35m/sec, left 59.73/sec and there was no significantly differences between right and left side and genders. 8. Ulnar motor nerve F-wave latency was right 25.53ms, left 25.57ms and there was significantly differences between genders.

변이형 협심증 환자의 진단에 있어 Iodine-123Metaiodobenzylguanidine 심근 스캔의 유용성

하종원,이종두,장양수,정남식,권준,임세중,이영준,심원흠,조승연,김성순 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.2

척골 지단 신경의 전기생리학적 연구

김종순,이현옥,안소윤,구봉오,남건우,김호봉,류재관,류재문 대한정형도수치료학회 2005 대한정형도수물리치료학회지 Vol.11 No.2

The ulnar nerve extends down the arm, across the elbow, and into the hand. It provides sensation to the little and ring fingers and activates many of the small muscles in the hand. The determination of peripheral nerve conduction velocity is an important part of ulnar nerve evaluation. The electrodiagnostic value as neurophysiologic investigative procedure has been known for many years but normal value of digital nerve was not reported in korea. The purpose of this investigation was to measure the digital nerve conduction velocity of ulnar nerve for obtain clinically useful reference value and compare difference in each fingers and then compare with the other countries. 71 normal Korean volunteers (age, 19-65 years; 142 hands) examined who has no history of peripheral neuropathy, diabetic mellitus, chronic renal failure, endocrinedisorders, anti-cancer medicine, anti-tubercle medicine, alcoholism, trauma, radiculopathy. Nicolet Viking Ⅱ(EMG machine) was use for detected conduction velocity and amplitude of digital nerve in ulnar nerve. Data analysis was performed using SPSS. Descriptive analysis was used for obtain mean and standard deviation and independent t-test was used to compare with ring and little finger. Conduction velocity of the right ring finger was 57.44m/sec and little finger was 55.32msec. The left ring finger was 55.55msec and little finger was 54.11msec. Amplitude of the right ring finger was 30.28µV and little finger was 48.36µV. The left ring finger was 30.67µV and little finger was 57.76µV. There were significantly difference between ring and little in amplitude (p<.05) but there were no statistically difference between conduction velocity of ring and little finger (p>.05). The amplitude of little finger are greater than ring finger. The present results revealed that electodiagnosis can easily perform in little finger for digital nerve of ulnar nerve study.

건설공사의 안전투자비에 대한 효과 분석

박종근,노민래,이관형 한국안전학회 2004 한국안전학회지 Vol.19 No.4

This study delivers the actual condition of investment for industrial accident prevention based on survey of 500 construction sites from "reports for industry safety and health" published by Korea Occupational Safety & Health Agency (KOSHA). The various research techniques were used such as technical statistic analysis for construction industry, cost comparison of industrial accident prevention and accident loss. A formula was deduced to calculate accident loss and accident frequency by accident prevention cost through regression analysis.

반월형 공기음영(air-meniscus sign)을 보인 폐 경화성 혈관종 1례 : A Case Report

정선관,노지영,노병석,원종진 圓光大學校 醫科學硏究所 1998 圓光醫科學 Vol.14 No.1

Sclerosing hemangiomas which uncommonly occur in the pulmonary parenchyma rarely have the air-meniscus sign on the radiologic examinations. We report a case of histopathologically proven sclerosing hemangioma with the air-meniscus sign of the lung on both chest radiograph and CT.