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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.
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.
절토사면 보강기법 선정에 있어서 AHP기법 적용에 관한 사례연구
한중근,이종영 한국지반공학회 2008 한국지반공학회논문집 Vol.24 No.8
In this study, to determine the priority of the effect factors and the preferences of commonly used reinforcing methods for the cut-slope, the reasonable analysis using AHP technique was performed. Analytic Hierarchy Process (AHP) technique is the most widely used method out of all existing decision making methods. On choosing the methods, the most important factor is analyzed to be the stability and durability. Stability, durability and environmental compatibility took up over 50% of the total contributing factors. Cut-slope reinforced method preference with increasing stability method confirmed that concrete retaining wall, reinforced-soil wall and cutting method showed the highest preference rate. Also, in practical field conditions, the cutting method out of four methods was chosen to be the most effective method. This reflected that the methods that are equally superior in all aspects of evaluation factors are more important than the methods with superiority in highly prioritized evaluation factors.