• Survey Research
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• v.2 no.2
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• pp.27-59
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• 2001

The population enumeration data from the decennial U.S. census are used in the apportionment of the U.S. House of Representatives and federal revenue sharing. The primary purpose of this study is to examine the various issues about the U.S. Census 2000. More specifically, this paper analyzes the sociopolitical implications of the racial and ethnic variations in net undercount rate in the census. In addition. we investigate the politics of race and ethnicity centering the census questions on race and use of sampling for adjustment of the enumeration data.

• Communications for Statistical Applications and Methods
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• v.9 no.2
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• pp.565-576
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• 2002

We propose a new sampling design for the 2001 Health Index Survey at Seoul. In this stratified two-stage sampling design, the ED(enumeration district) of 2000 Population and Housing Census is used as primary sampling unit and the Gu is used as stratification variable in order to obtain the sub-domain estimate for 25 Gu's as well as population estimate for Seoul. The sample ED's are systematically selected after the Ed's are ordered by location and property to obtain a representative sample. And also, the imputation methods for item nonresponses are suggested.

• The Korean Journal of Applied Statistics
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• v.25 no.5
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• pp.733-741
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• 2012

The successful launch of Arirang satellites allow the acquisition of high resolution satellite imagery of Korean territory and enables the transition from the conventional cultivation area survey method to new image based methods adopted in advanced nations. In this study, we suggested reasonable sizes of the primary sampling unit and the secondary sampling unit for the satellite imagery based sampling design in 8 provinces preselected for this research. The PSU size was determined mainly in consideration of intracorrelation that shows the degree of homogeneity within each cluster and the efficiency of the image process. For the SSU size, we considered the relative standard error and the differences between the land cover maps produced by the Ministry of Environment and the satellite imagery processed by the National Statistical Office.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.5 no.1
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• pp.51-58
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• 2002

Since planning of green-network is deeply being discussed, natural environmental disruption from an enlarged civilization is causing serious problems for urban communities. The purpose of this research is to support green-network infrastructure of Gangnam-gu, Seoul, considering ecological environmental planning for urban parks. The Methodologies for this study are landcover classification, NDVI and subjective analysis, and residents' survey. Findings of this research are as follows : 1) Based on the results, the area adjacent to Daemo mountain shows significant differences between 1985 and 1999. These results imply that the green space has been decreasing and deeply destroying. 2) Residents' survey shows that people want to live with wild animals and plants in the natural park. Future development planning of urban park should consider primary factors : ecosystem, increasing inhabitants' participation.

• Journal of the Korean Home Economics Association
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• v.19 no.2
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• pp.165-174
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• 1981

The survey was conducted through circulating questionares to three hundred sampled college students in Seoul. the findings are as follows. 1. 52% of MS (Male Students) and 25% of FS(Female Students) brought home-made lunches with them, while 39.2% of MS and 51.6% of FS used food services in campus. 2. Contents of home-made lunches were steamed rice(57%) or steamed ricebarley mix(24%) as a major diet, and Kimchi (Korean style pickled vegetable), fried eggs, soy-sauced sardins as side-dish. The favorite eating places for the students with home-made lunches were found to be campus dining hall for MS, classrooms for FS. 3. The primary reason for not having home-made lunches are the difficulties for handing. 4. The preference for the food served in campus dining hall was the traditional Korean food for MS and western style Snack (bakery and soft drinks) for the FS. 5. Costs spent for lunches were in the range of 200~600 won. 6. Followings are the comparison table for each ingredient compared with recommended daily requirement (RDR).

• The Bulletin of The Korean Astronomical Society
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• v.37 no.2
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• pp.235-235
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• 2012

The "Widefield ASKAP L-band Legacy All-sky Blind surveY" (WALLABY) is an extragalactic HI survey which aims to examine HI properties and large-scale distribution of ~500,000 galaxies out to z ~ 0.27, covering a wide range of science goals associated with galaxy formation and evolution (P.I.: B. Koribalski & L. Staveley-Smith). The combination of ASKAP's exquisite column density sensitivity and a large primary beam will make it possible to systematically investigate the rarely explored low column-density HI in the universe. Ultimately, the largest and most homogeneous data set from WALLABY will drastically improve and broaden our knowledge on galaxy formation and evolution. ASKAP will be on-line in 2013, so to ensure timely and efficient reduction and analysis of the large WALLABY data set, we have been developing and testing reliable source finding tools and data analysis pipelines. In this talk I present recent progress of WALLABY, especially on the kinematic parameterisation pipeline for the spatially resolved galaxies detected by WALLABY.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.11 no.18
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• pp.41-57
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• 1988

This study was carried out to furnish information for the appropriate standard work time measure and applicate system development that help for korean manufacturers. As a research methodology of the study, the questionnaire survey by sampling nine hundreds registerd corporation, was conducted to find the scientific management technique level (for especially standard work time). By crossectionally analyzing the survey results, placed primary emphasis on the study to comparison with employee scale and types of industry classify. The contents of subjective study art as follows; (1) Establish state of standard time(S. T) (2) Mainly technique for establish S. T (3) Institute level and correctness of S. T (4) Practical use of S. T (5) Performance rating and Allowance rate (6) Advantage and disadvantage to application results.

• Journal of the Korean Data and Information Science Society
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• v.16 no.1
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• pp.59-69
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• 2005

Data mining is the method to find useful information for large amounts of data in database It is used to find hidden knowledge by massive data, unexpectedly pattern, relation to new rule. The methods of data mining are decision tree, association rules, clustering, neural network and so on. We analyze Gyeongnam social indicator survey data by 2001 using association rule technique for environment information. Association rule mining searches for interesting relationships among items in a given large data set. Association rules are frequently used by retail stores to assist in marketing, advertising, floor placement, and inventory control. There are three primary quality measures for association rule, support and confidence and lift. We can use to environmental preservation and environmental improvement by association rule outputs

• Journal of the Korean Society of Safety
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• v.16 no.2
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• pp.36-43
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• 2001

This study is intended to estimate influences upon life cycle of ESPE(Electro Sensitive Protective Equipment) which is kinds of commonly used in press in domestic industry. First the field survey is executed to workers and safety managers at work places. In the survey, the main primary factors influenced the lift cycle of ESPE were vibration due to overload work in workplace. Second, int results showed that 37$m/s^2$ acceleration in press work would lead to the life of 132 for 8 hours work per day. Therefore, the vibration of press inflicted significant effect on the lift of ESPE.

• Journal of Information Management
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• v.38 no.4
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• pp.181-199
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• 2007

This paper aims at projecting the structure and functions of District Central Libraries in Tamil Nadu based upon primary records collected from the Directorate of Public Libraries and survey of District Library officers who are the authorities of District Central Libraries. This paper reveals the State of Art the District Central Libraries and their functions. Based on outputs a number of suggestions have been provided. This paper represents an empirical research study.