• The Transactions of the Korea Information Processing Society
• /
• v.2 no.2
• /
• pp.168-175
• /
• 1995

It has been commonly accepted for a while that a successful tool environment must provide for smooth interfaces between its tools. Recent integrated CASE environment must be-based on well-integrated data repository which supports a tightly coupled, consistent environment. For the maintenance tool, it requires a careful design of the maintenance chest's database. Information about a program exists in many different forms after analyses have been performed. It must be possible to associate and select objects for data repository from this information as necessary. This paper suggests a new integrated scheme for the data repository in building software maintenancec environment. The scheme provides many basic services, including storage and management of objects/entities and links/ relations; version and configuration control, query service, data interchange service.

• Journal of the Korean housing association
• /
• v.23 no.2
• /
• pp.125-133
• /
• 2012

The purpose of this study was to explore characteristics and housing satisfaction of multifamily renter households in metropolitan areas using 2009 American Housing Survey public-use microdata. A total of 8,139 multifamily renter household residing in metropolitan statistical areas were selected for data analysis. The findings are as follows: (1) In comparison with other types of households in the metropolitan areas, multifamily renter households tended to show a smaller household size, younger householders, a greater proportion of households with householders who have never married, or have been widowed, divorced or separated; (2) housing cost related variables such as monthly rent or rent per square footage were found not to have significant influence on housing satisfaction of multifamily renter households in metropolitan areas; (3) factors influencing housing satisfaction of multifamily renter households with householder's age 34 years or younger were neighborhood satisfaction, householder's race, structure age and per-person unit size; and (4) neighborhood satisfaction was found to have the strongest influence on housing satisfaction of multifamily renter households in metropolitan areas.

• Journal of the Korean housing association
• /
• v.23 no.2
• /
• pp.69-77
• /
• 2012

The purpose of this study was to explore housing cost burden of young single- or two-person households in the United States who have recently moved for job-related reasons. Total 580 households were selected from 2009 American Housing Survey public-use microdata for data analysis. The findings are as follows: (1) Targeted single-person households were characterized as younger households with higher educational attainment, lower household income, and greater proportion of renters, multifamily housing residents and households with housing cost burden than other households; (2) two-person households showed a higher income level and lower housing cost burden; (3) characteristics that showed significant influences on housing cost burden were household size, householder's age, gender, race and educational attainment, household income level and tenure type; and (4) a linear combination of household size, household income, whether or not a low-income household, residency in metropolitan area, and home structural type were found to be most efficient to predict a single- or two-person household's housing cost burden regardless of the household size.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2006.04a
• /
• pp.469-473
• /
• 2006

In general, a classification process between ground data and non-ground data, which include building objects, is required prior to producing a DEM for a certain surface reconstruction from LiDAR data in which the DEM can be produced from the ground data, and certain objects like buildings can be reconstructed using non-ground data. Thus, an exact classification between ground and non-ground data from LiDAR data is the most important factor in the ground reconstruction process using LiDAR data. In particular, building objects can be largely used as digital maps, orthophotos, and urban planning regarding the object in the ground and become an essential to providing three dimensional information for certain urban areas. In this study, an entropy theory, which has been used as a standard of disorder or uncertainty for data used in the information theory, is used to apply a more objective and generalized method in the recognition and segmentation of buildings from raw LiDAR data. In particular, a method that directly uses the raw LiDAR data, which is a type of point shape vector data, without any changes, to a type of normal lattices was proposed, and the existing algorithm that segments LiDAR data into ground and non-ground data as a binarization manner was improved. In addition, this study proposes a generalized building extraction method that excludes precedent information for buildings and topographies and subsidiary materials, which have different data sources.

• Journal of Convergence for Information Technology
• /
• v.10 no.10
• /
• pp.273-278
• /
• 2020

The aim of this study was to confirm the relationship between asthma and dental caries in Korean children. Using the data of the 2017 The Panel Study of Korean Children (PSKC), logistic regression analysis was performed to investigate the association between asthma and dental caries in 331,457 9-year-old children. As a result of this study, asthma was associated with dental caries(unadjusted odds ratio [OR]: 2.75, 95% confidence interval [CI]: 2.63-2.88). In addition, after all confounders were controled, their association became stronger(adjusted odds ratio [aOR]: 2.78, 95% confidence interval [CI]: 2.65-2.91). Further studies are needed to clearly confirm the relationship between respiratory disease and dental caries and their causal relationship in children.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.2
• /
• pp.233-239
• /
• 2016

This study compared and analyzed the tooth brushing time per day and dental caries in 1-13-year-old children in the stage of the completion of their permanent teeth based on the 6th primitive at data of objective National Health Nutrition Survey. The results show a meaningful difference between the DMFT and dental caries experience. In particular, the group with a lower toothbrushing rate after lunch generally have a higher incidence of dental caries.

• Journal of Labour Economics
• /
• v.42 no.3
• /
• pp.1-38
• /
• 2019

This paper investigates the relationship between the occupational gender wage gap and the proportion of high wage earning female workers in Korea. The main idea is that an increase in the number of high wage earning female workers in the workplace could lead to a decrease in the gender wage gap by eradicating the prejudice or reducing the statistical discrimination on female workers. We constructed a panel dataset by using the raw data from the Korean Survey Report on Labor Conditions by Employment between 2009 and 2016. The result shows that greater presences of high wage earning female workers in male dominant occupations have statistically significant negative impacts on residual gender earning dispersion.

• Journal of the Korea Convergence Society
• /
• v.10 no.7
• /
• pp.295-301
• /
• 2019

This study evaluated the relationship between drinking and smoking and periodontal disease in Korean elderly people using 2013-2015 National Health and Nutrition Survey. (OR) 1.50; 95% confidence interval [CI], 1.00-2.24) than the non - alcoholic and non - smoking groups. The odds ratios were significantly higher. The odds ratios of periodontal disease were significantly higher in the elderly who were drinking and smoking at the same time than those who did not drink or smoke at all. This study confirms that drinking and smoking are significantly related to periodontal disease. Therefore, it is necessary to strengthen drinking and smoking cessation education to maintain oral health of the elderly.

• The Journal of Korean Society for School & Community Health Education
• /
• v.20 no.1
• /
• pp.97-111
• /
• 2019

목적: 최근 이명의 발생률이 증가하고 있으나 이명에 대한 정확한 원인 발견이 어려운 실정이다. 한국의 경우도 예외는 아니며, 사회경제적 상태에 따른 이명여부를 분석하고자 한다. 방법: 국민건강영양조사 제 5기(2010-2012)의 원시자료를 이용하였으며, 연구 대상자인 40세 이상 12,041명을 다중 로지스틱 회귀분석을 실시하였다(95% CI). 결과: 40세 이상 중년인구의 사회경제적 상태에 따른 이명여부는 통계학적으로 유의한 차이가 있는 것으로 나타났다. 이명의 발생여부는 연령이 높을수록(p<.0001), 직업군에 따라서(p<.0001), 대사증후군이 있는 자(p<.0001), 교육수준이 낮을수록(p<.0001), 기초생활수급자(p<.0001), 배우자가 없는 자(p<.0001), 스트레스가 많을수록(p<.0001), 우울증이 높을수록(p=.0034) 이명이 발생하였다. 회귀분석 결과 여성의 경우 대상자의 학력이 초등학교 이하인 그룹에서 교차비가 높았으며(OR:1.784, 1.322-2.408) 소득이 하위계층인 그룹에서 교차비가 높았다(OR:1.591, 1.293-19.58). 하지만 남성의 경우에는 유의한 결과가 나오지 않았다. 결론: 본 연구는 40세 이상 중년인구의 사회 경제적 상태에 따른 이명여부를 파악함으로써 남성보다 여성에서 사회경제적 수준에 따라 이명여부에 영향을 많이 받는 것을 밝혀낸 것에 연구의 의의가 있다.

• Journal of Korean society of Dental Hygiene
• /
• v.22 no.5
• /
• pp.355-363
• /
• 2022

Objectives: This study aimed to assess the relationship between oral symptoms and changes in daily life after coronavirus disease (COVID-19) in middle and high school students. Methods: Data were obtained from the 17th Korea Youth Risk Behavior Survey (2021). The subjects comprised 53,868 people who responded to survey questions related to this study. Multiple logistic regression analysis with complex samples was performed to identify the correlation between daily life changes and oral symptoms. Results: The analysis showed that compared to the group without changes in daily life after COVID-19, changes in daily life, such as skipping breakfast, drinking, and smoking, either decreased or increased. Furthermore, increase in depression and decreased physical activity and family economic status were related to oral symptoms. Conclusions: It is necessary to develop oral health programs for adolescents suitable for changing situations after COVID-19.