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문인호,박선주,이명신,정옥철,정대원 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.4
본 논문은 다목적실용위성의 임무수행 가시화 툴 개발을 위한 사례조사 및 개념설계에 대해 기술하였다. 위성 가시화 툴은 운영자가 복잡한 위성 임무를 효율적으로 모니터링하기 위한 지상시스템의 한 부분을 담당하고 있다. 위성 운용을 위해 임무계획 및 명령생성을 수행하며, 생성된 명령을 위성에 전송한다. 위성은 전송받은 명령을 기반으로 임무를 수행하게 되며 임무수행 결과 및 위성의 상태정보는 지상국과의 교신을 통해 지상에 전송되어 진다. 위성 운영자는 전달받은 데이터를 후처리하여 위성상태 및 임무수행여부를 파악하게 된다. 본 논문에서 소개하는 위성 가시화 툴은 위성에 전송하기 위해 생성된 명령을 기반으로 하여 지상국 교신구간 외에 위성상태를 예측하여 운영자의 실시간 임무수행상태 모니터링을 위해 위성상태를 Text와 2D/3D Graphic으로 디스플레이 할 계획이다. This paper describes a case study and conceptual design for the KOMPSAT visualization tool. That is an important part of the satellite ground system makes complex missions more efficient for monitoring. It conducts scheduling and commading satellite"s operations, and then those are sent to satellite. After that, It accomplishes the uploaded command. That result for performing tasks and status of satellite are delievered with telemetry. An operator can get those only after telemetry. KOVT predicts satellite status-based on accepted command- on the rest time of ground contact. It is planned to display the satellite status for texts and 2D/3D graphics for monitoring.
문인호,이종재,박철,조병완 한국구조물진단유지관리학회 2012 한국구조물진단학회 학술발표회논문집 Vol.2012 No.1
Damages due to typhoon and floods are increasing as a result of global warming and abnormal climate phenomenon over the world. Flood and scour is one of the major causes for bridge collapse. However, maintenance and inspection techniques still need improvements especially for underwater structures like bridge piers in rivers. Conventionally, manual inspection by divers has been carried out for underwater structures of bridges. This has difficulties in gathering accurate and reliable field data under severe environmental conditions. Therefore, in this study, underwater inspection of bridges has been carried out using the side scan sonar (SSS), one of unmanned underwater inspection equipment. Compared to the conventional manual inspection, it has been found that the SSS can be efficiently utilized to underwater inspection of bridges especially with bad visibility or large-scale inspection area.
문인호,황영규 대한설비공학회 2004 설비공학 논문집 Vol.16 No.9
The propulsion force acting on a wafer in an air levitation system was measured accurately and then, the corresponding force coefficient was determined. The theoretical propulsion force on the wafer bottom surface were obtained by CFD simulations and from these results the propulsion force coefficient was deduced. The transportation velocity of a wafer was estimated by using both experimental and numerical force coefficients, for various air velocity of nozzle injection. When the numerical results are compared to the experimental data, the numerical results agree well quantitatively.
온도변화에 따른 이질바퀴(Periplaneta americana L.) 자충의 과립혈구에 관한 형태학적 연구
문인호,백광민,노용태 한국곤충학회 1988 Korean journal of entomology Vol.18 No.2
28$^{\circ}C$에서 사육한 이질바퀴 (Periplaneta americana) 자충을 2$0^{\circ}C$부터 $0^{\circ}C$까지 5$^{\circ}C$간격 (2$0^{\circ}C$, 15$^{\circ}C$, 1$0^{\circ}C$, 5$^{\circ}C$, $0^{\circ}C$)으로 처리하여, 각 온도마다 12시간, 24시간, 36시간, 48시간별로 광학현미경과 주사전자현미경을 사용하여, 과립혈구의 형태변화를 관찰한 결과는 다음과 같다. 1. 온도변화에 따른 총혈구수와 각 혈구별 구성 비율의 변화는 거의 없었다. 2. 15$^{\circ}C$ 12시간부터 아메바형 과립혈구가 증가하여, 1$0^{\circ}C$ 12시간에서는 대부분의 과립혈구가 아메바형이었다. 3. 1$0^{\circ}C$ 24시간부터 방추형 과립혈구가 나타나기 시작하여, 5$^{\circ}C$ 36시간에서 과립혈구 대부분이 방추형이었다. 4. 5$^{\circ}C$ 48시간에서부터 세포질이 현저히 줄어들고, 핵이 막대형인 과립혈구가 나타나기 시작했으며, 죽기 전인 $0^{\circ}C$ 24시간에서는 이와 같은 과립혈구가 더욱 증가되었다. This study was undertaken to examine the influence of temperature on granulocytes in the nymph of american cockroach, P. americana, using light microscope and scanning electron microscope. The nymph of american cockroach, P. americana, which was bred at 28$^{\circ}C$, was treated at temperatures ranging from 20$^{\circ}C$ to 0$^{\circ}C$, with the interval of 5 degrees between the temperatures 20$^{\circ}C$, 15$^{\circ}C$, 10$^{\circ}C$, 5$^{\circ}C$ and 0$^{\circ}C$, and it was examined in 12hrs, 24hrs, 36hrs and 48hrs at each temperature. Haemolymph was always taken from antennae. Shapes of the granulocytes turned out to be oval or round at 20$^{\circ}C$, which are almost identical with the shapes at 28$^{\circ}C$, The number of amoeboid granulocytes began to increase at 15$^{\circ}C$ in 12hrs, and at 10$^{\circ}C$ in 12hrs most of the granulocytes became amoeboid. Beginning fusiform granulocytes appeared at 10$^{\circ}C$ in 24hrs and most of granulocytes were fusiform at 5$^{\circ}C$ in 36hrs. Cytoplasm decreased markedly and granulocytes with elongate nuclei appeared at 5$^{\circ}C$ in 48hrs. The granulocytes with elongate nuclei were observed easily at 0$^{\circ}C$ in 24hrs. These observations demonstrated that haemocytes in the nymph of american cockroach, P. americana, are markedly influenced by low temperature (15$^{\circ}C$∼0$^{\circ}C$); that is, the size of haemocyte decreases and the shape of the granulocytes changes.