• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.29 no.3
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• pp.275-281
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• 2011

To acquire an underwater topographic information is necessary for the design and construction of structures in marine and inland water. It consists of water depth information by bathymetric survey and underwater bottom topography image information can be obtained by side scan sonar in different ways. For the purpose of providing high quality data by means of engineering site survey, it is necessary to apply simultaneous acquisition of two information and carry out the integrated interpretation to each other. The present research aims to obtain information of the underwater topography and water depth at the same time using interferometer technique, and to validate interferometer technique with accuracy estimation.

• Journal of Food Hygiene and Safety
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• v.17 no.3
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• pp.166-172
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• 2002

This study has been carried out to estimate the average daily intakes of preservatives commonly used in Korea. The survey method, which is specific approach that can be applicable for Koreans has been proposed to estimate the daily intakes. The ADIS of sorbates, benzoates, and esters of p-hydroxybenzoic acid were less than 1% and judged to be safe. The EDIs of sorbates, benzoates, and esters of p-hydroxybenzoic acid were 0.39, 0.29, and 0.04 mg/kg bw/day respectively. And these data were compared with existing data. In case with sorbates, the EDI of survey data was higher than that of analytical data but much lower than that of maximum permitted level data. Also, the EDIs of benzoates and esters of p-hydroxybenzoic acid showed to be the same results. In conclusion, the EDIs of survey data lie between maximum Permitted level data and analytical data of Preservatives. The survey method could be considered as the possible alternative of refined method.