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수치사진영상을 이용한 자동 변위계측시스템의 개발과 적용
한중근,홍기권,김영석,조삼덕,곽기석 한국지반공학회 2007 한국지반공학회논문집 Vol.23 No.5
Recently, for the stabilization estimation of structures, many automatic measuring instruments with expensiveness and high accuracy have been developed and utilized. However, the existing manual measuring systems are almost impossible to measure the real-time for the whole surface of large-scale structures and an automatic measuring system has disadvantages with demanding enormous expense. In this study, 3D digital visual monitoring system was developed by using digital photogrammetry technique. To confirm application of developed system, it was applied to the measurement of the wall displacement of concrete surface and displacement measurement of reinforced-soil wall block. Then, the result of the test was compared with measuring value of total station. Based on the results of the comparison, the application of visual monitoring system was evaluated. The results show that the developed visual monitoring system could be available in displacement measure of structures.
한중근,송영석 중앙대학교 기술과학연구소 2003 기술과학연구소 논문집 Vol.33 No.-
블록식옹벽은 다양한 토목 및 건축공사에서 적용되고 있으나, 옹벽시공시 환경친화적 요소의 유무가 점 차 문제화 되면서 공공공사에서는 특히 설계요소로서 인간생활과 친밀해질 수 있는 특징으로 친환경적 요소가 필요하게 되었다. 이러한 관점에 주안을 두고 친환경적 요소를 갖는, 즉 식생이 가능한 보강토블록으로서 그린스톤이 개발되었다. 그린스톤블록은 조경용 블록으로서 도심지등에서 많이 적용되며, 식생 조건에 맞는 자동화된 배수체계를 도입하였다. 그러나, 그린스톤은 직립옹벽의 형상으로 제한된 높이와 국부파괴의 위험이 상존함을 시공사례 고찰을 통해 확인하였다. 이를 만족하기 위해, 뒤처짐경사를 갖는 친환경적 블록으로서 중력식블록세트(그린스톤플로, 연결축 및 고정축)가 개발되었고 개발된 시스템의 시공사례를 이용하여 문제점을 고찰하여 시공 및 설계기준을 마련하였다. 중력식블록옹벽의 설계 및 시공시 주의할 점은 부등침하의 원인이 되는 기초지반의 지지력, 옹벽배면에서의 배수무네가 가장 큰 문제이었으므로 본 연구에서는 블록식옹벽 시공시 적합한 관리 및 설계기준으로 기하수위, 기초지지력 및 배수조건에 대하여 제시하였다. 특히, 도심지내에서는 친환경적요소의 특징이 더욱 발휘될 수 있음을 확인할 수 있었다. The SRW(segmental retaining wall) including soil-reinforcement retaining wall has been used for various construction works in Civil and Architectures works. But the non-environmental factors in this system are one of significant problems. Then, the environmental factors within familiarity in field were become to the design factor in the public works. The Green Stone was developed. which can be planting and can be make a possible to construction of closed environmental structures. This landscape block can be automatically management of lowers and plants at spaces between blocks in all seasons using the drop water system. The existing systems have got usually the possibility of local failure. Through case studies, the shapes of block were improved to gravity Green Stone FLO. That is composed to three parts as follows; Green Stone FLO, Trunk-Bar and Anchor-Joint. This system was satisfied for the problem of structure stability with setback. The significantly considering problems at design and construction of soil-reinforcement retaining wall are he bearing capacity of foundation to the control of non-uniformed settlement and drainage system in retaining wall backside. In study, therefore, the design criteria and its control conditions were suggested to on the groundwater level, foundation bearing capacity and drainage conditions. The feature of gravity block including environmental factors could be defined, especially, the advantages of improved block appeared and shown in downtown.
韓重根 우석대학교 의과대학 1967 우석의대잡지 Vol.4 No.2
The emptying time of normal adult stomach is said to be influenced by various factors such as chemical composition, volume, viscosity, size of the particles, osmotic pressure, pH and temperature of the foods as well as posture, exercise and emotional status of the individual. Numerous articles dealing with the gastric emptying time in animals and western people are available, and it has long been known that the normal adult stomach usually empties barium meal in 2 hours, carbohydrate meal in 3 to 4 hours, protein meal in 4 to 5 hours, fatty meal in 6 to 9 hours and ordinary mixed meal in 3 to 4.5 hours. However, there has been no work on the gastric emptying time of healthy Korean adults. Employing serial radiological study author attempted to observe the gastric emptying time of barium meal in 84 healthy Korean adults and three kinds of ordinary mixed meals usually eaten by koreans in 3 groups which consisted of 10 normal adults each. The results obtained are summarized as follows: 1. The average gastric emptying time of barium meal (300 ㎖. in volume) in 84 normal adults was 2.17 hours. The extreme ranged from 1 to 5 hours. 2. The average grastric emptying times of ordinary mixed meals (1,000 ㎖. in volume) were 5.6 hours for high carbohydrate meal, 7.97 hours for high protein meal and 8.97 hours for high fat meal. 3. The mean gastric emptying time of each of 3 types of ordinary mixed meals in women was about an hour longer than in men, while no remarkable sexual difference was observed when 300㎖. of barium meal was given. The longer gastric retention time of the ordinary mix in women is due most likely to the greater distension of the stomach in female whose body and stomach are usually smaller in size than those of male. 4. The rate of gastric evacuation of the ordinary mixed Korean foods was about linear in all types of the meals until 3 hours after ingestion of the food, after which it changed according to the chemical composition of the food. The carbohydrate meal was evacuated at constant rate till the stomach was empty, on the other hand the evacuation rate of high protein meal and high fat meal decreased progressively as the time went on from 2 hours after ingestion of the food.