• Proceedings of the Korean Geotechical Society Conference
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• 2003.03a
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• pp.265-272
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• 2003

In this study, the rock mass classification results from the face mapping and the resistivity inversion data are compared and analyzed for the reliability investigation of the determination of the rock support type based on the surface electrical survey. To get the quantitative correlation, rock engineering indices such as RCR(rock condition rating), N(Rock mass number), Q-system based on RMR(rock mass rating) are calculated. Kriging method as a post processing technique for global optimization is used to improve its resolution. The result of correlation analysis shows that the geological condition estimated from 2D electrical resistivity survey is coincident globally with the trend of rock type except for a few local areas. The correlation between the results of 3D electrical resistivity survey and the rock mass classification turns out to be very high. It can be concluded that 3D electrical resistivity survey is powerful to set up the reliable rock support type.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2004.06a
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• pp.24-31
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• 2004

In order to decommission safely nuclear power plant, it is necessary for the procedure of residual radioactivity investigation in site to provide detailed guidance for planning, implementing, and evaluating environmental and facility radiological surveys conducted to demonstrate compliance with a dose or risk-based regulation. This study presents the procedure of residual radioactivity investigation in decommissioning site - Historical Site Assessment, Scoping Survey, characterization Survey, Remedial Action Support Survey, Final Status Survey - on the basis of MARSSIM(Multi-Agency Radiation Survey and Site Investigation Manual) and investigation cases of decommissioned or decommissioning nuclear power plant.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2006.04a
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• pp.15-20
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• 2006

For grouping the direction of improvement in the classification of surveying jobs, watching for internal surveying jobs, it has a purpose to present the direction of improvement. KSCO based on ISCO-88 was identifed with having independent special surveyors differing from foreign surveying jobs classification. Strandard Industry Classification of foreign survey is classifying KSCO of survey detailed. thus, the improvement of survey jobs classification of KSCO is urgent to produce, analyze and process the data about the same field for classifying survey information industry efficiently and systematically. It is changing from analog survey to digital survey applying a new technology such as GPS, GIS, RS. thus, the field of geoinformation is needed to classify and improve newly.

• Journal of Korean Society for Quality Management
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• v.42 no.3
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• pp.339-360
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• 2014

Purpose: The objective of this paper was to analyze the requirements of the end-users by class after carrying out a survey on the user requirements for sleeping bags and utilize the result for effective product development. Methods: The test for difference in means by class was conducted through one sample analysis and one-way ANOVA after the survey result has gone through a reliability verification, and an LSD (Least Significant Difference) test was conducted as a post-mortem method. Results: A significant result was derived from the survey on the user requirements for sleeping bags by method of use, use of combination of sleeping bag components or a sleeping bag alone. Conclusion: The significant result derived from the survey of this paper on the user requirements for sleeping bags can be utilized for effective development of sleeping bags.

• Proceedings of the Korean Association for Survey Research Conference
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• 2003.06a
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• pp.59-68
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• 2003

Transport survey has been conducted annually by the Korea National Statistical Office (KNSO) in order to acquire information on business activities of the transport industry such as the number of employees, remuneration, revenue, expenses and tangible fixed assets, etc. The results of this survey are widely used for formulating economic policies of government and management plans of business and also for research activities. In this thesis, we provide the sampling design of the transport survey, and describe the management of sample in KNSO.

• Journal of Korea Technology Innovation Society
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• v.5 no.2
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• pp.228-244
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• 2002

The survey of research and development (R&D) in science and technology (S&T) covers the current status of R&D activities in S&T in Korea, and provides a basis for decision making regarding S&T policy. Continuous improvement of the survey is widely needed to present reliable national basic statistics. Therefore, the purpose of the study is two-fold: to introduce sampling survey method in industrial sector and to make statistical technique to deal with non-response data from industrial sector. To these ends, first, case studies of the United States and Japan are illustrated. A new sampling design for the R&D survey is proposed and implementing stratified random sampling scheme is suggested. Moreover, statistical analysis of the non-response data is dealt with. Based on several screening criteria, we develop a new imputation method suitable for the R&D survey and also provide more detailed implementation plan. Various solutions to a problem arising from non-response item are also presented. Finally, some implications of the results are discussed.

• Proceedings of the Korean Association for Survey Research Conference
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• 2001.04a
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• pp.1.1-16
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• 2001

This paper intends to provide some guidelines for the articles to be published in Survey Research. For that purpose, we review the research articles published in Public Opinion Quarterly in 1991, 1995, and 2000, and identify the characteristics and the analytical methods and data used in these researches. Articles in Public Opinion Quarterly have some implications to the Korean survey research community in such a way that the types of researches to improve survey qualities and meta analyses of previously conducted survey researches seem to be the most useful and necessary at present.

• Survey Research
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• v.2 no.2
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• pp.1-16
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• 2001

This paper intends to provide some guidelines for the articles to be published in Survey Research. For that purpose, we review the research articles published in Public Opinion Quarterly in 1991, 1995, and 2000. and identify the characteristics and the analytical methods and data used in these researches. Articles in Public Opinion Quarterly have some implications to the Korean survey research community in such a way that the types of researches to improve survey qualities and meta analyses of previously conducted survey researches seem to be the most useful and necessary at present.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.10
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• pp.1787-1791
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• 2010

This paper presents the survey results of the interruption on domestic customer, especially commercial, with primary focus on the cost are presented. General method utilized in quantifying the benefit of reliability on power system is to estimate the Customer Interruption Cost(CIC) associated with the electric service interruption. According to change the circumstance of electricity market by the deregulation and the introduction of new technology, reliable and accurate CIC is required for estimate the applied plan and technology under the circumstance. This paper presents the commercial customer interruption cost is estimated by the survey conducted by KEPCO in 2009. To collect the customer interruption data for calculation of CIC, the survey is conducted. The survey targeting commercial customer around the branch-offices under twelve regional headquarters of KEPCO was carried out.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.10
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• pp.1792-1796
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• 2010

In this paper, the survey results of the interruption on domestic residential customer with primary focus on the cost are presented. General method utilized in quantifying the benefit of reliability on power system is to estimate the Customer Interruption Cost(CIC) associated with the electric service interruption. According to change the circumstance of electricity market by the deregulation and the introduction of new technology, reliable and accurate CIC is required for estimate the applied plan and technology under the circumstance. This paper presents the residential customer interruption cost is estimated by the survey conducted by KEPCO in 2009. To collect the customer interruption data for calculation of CIC, the survey is conducted. The survey targeting residential customer around the branch-offices under twelve regional headquarters of KEPCO was carried out.