• Journal of Korean Society of Forest Science
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• v.95 no.5
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• pp.591-594
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• 2006

To have better urban forests in future we are focusing on two major issues like other countries. How we could have more urban forest-quantitative approach-against the expanding of urbanization, and how we could produce better urban forest-qualitative approach-to give a chance in contact with better nature for urban people. Prime surveys on urban forests have been carried out in 6 major cities since 1991, and the city of Daegu which is located on the east southern area of Korea have been case studied for qualitative approaches during last 3 years. Major species of the remnant forests were Pinus densiflora, Pinus rigida, Pinus thunbergii and Robinia pseudoacacia. Approximately 20% of the surveyed forests were lost their structure as forests caused by illegal farming, facilities and as the bare ground by excessive visitors. Generally speaking the condition of forests for biotope was very poor in overall. From two years data of monitoring of birds, we found that wooded parkways and woodland squares had more species than street tree areas. Nests were found mainly on the branch of Zelkova serrata, Pinus densiflora and Quercus myrsinaefolia. The size of urban forests mainly determined the species richness of birds. According to the oxygen output and carbon input by photosynthesis measurement, the capability was in order of Platanus occidentalis, Zelkova serrata and Ginko biloba. Air conditioning effects of trees through transpiration measurement was found and the quality of forests also related to the reducing of urban heat-island.

• Coupled systems mechanics
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• v.4 no.4
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• pp.297-316
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• 2015

The use of fragility curves in the design of bridges is becoming common these days. In this study, experimental data have been used to develop fragility curves for the potential of girder unseating of a three-segment bridge and a bridge-abutment system including the influence of spatially varying ground motions, pounding, and abutment movement. The ground excitations were simulated based on the design spectra for different soil conditions. The Newmarket Viaduct replacement bridge in Auckland was used as the prototype bridge. These fragility curves were also applied to the 2010 Darfield and 2011 Christchurch earthquakes. The study showed that for bridges with similar characteristics as the chosen prototype and with similar fundamental frequencies, pounding could increase the probability of girder unseating by up to 35% and 30% based on the AASHTO and NZTA seating length requirements, respectively. The assumption of uniform ground excitations in many design practices, such as the NZTA requirements, could potentially be disastrous as girders might have a very good chance of unseating (as much as 53% higher chances when considering spatial variation of ground motions) even when they are designed not to. In the case of superstructures with dissimilar frequencies, the assumption of fixed abutments could significantly overestimate the girder unseating potential when pounding was ignored and underestimate the chances when pounding was considered. Bridges subjected to spatially varying ground excitations simulated based on the New Zealand design spectra for soft soil conditions with weak correlation shows the highest chances of girders falling off, of up to 65% greater than for shallow soil excitations.

• Journal of the Korea Society of Computer and Information
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• v.18 no.11
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• pp.201-212
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• 2013

This study divides and traces experience courses of families' disorganization and reorganization of North Korean refugees in North Korea, China, and South Korea after settlement respectively, from the course of their escaping North Korea to entering South Korea. Through these results, the study is to propose political implications. Main data for the study were analyzed through a case study as a qualitative study method, targeting eight people from July in 2012 to March in 2013. From the study result, though North Korean refugees seemed to disorganize and leave family relations in the course of escaping North Korea, it was found out that this is not disorganization but a preparatory stage which saves families standing at the crossroads of life and death and makes a chance to live with them someday. In these courses, in order for them to overcome their situations and survive, while repeating disorganization and reorganization of families, they used them as a way of saving themselves and their families. It was discovered that these phenomena always occurred simultaneously.

• Health Policy and Management
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• v.28 no.4
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• pp.369-377
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• 2018

Background: Catastrophic health expenditure (CHE) occurs when medical expenditure of a household passes over a certain ratio of household income. This research studied the effect of gender on CHE based on Korea Health Panel data. Methods: This study implemented binary logistic regression model to figure out whether gender affects CHE and how different gender groups show pattern of CHE process. With gender, age, marital status, income level, economic activity, membership of private insurance, existence of chronic disease, and self-rated health were included in the model. Results: Results showed that females faced CHE 1.5 times more than males (odds ratio, 1.241). Also, main determinants of CHE in female groups were marital status, while age and economic activity status were significant in male groups. Subgroup analysis displayed that married female under 35 years old are located in intersectionality of CHE including pregnancy and delivery, multiple health risk behaviors, mental stress, and relatively vulnerable social status due to lower income. Meanwhile, both gender above 50 years old faced remarkably high chance of CHE, which seems to be caused by complex health risk behaviors and chronic diseases. Conclusion: Such results implied not only that gender is an important determinant of CHE, but also other determinants of CHE differ according to gender, which suggests a necessity of gender-based CHE support and rescue policy.

• Journal of Gifted/Talented Education
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• v.26 no.2
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• pp.389-404
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• 2016

This research aims to build a concept map reflecting gifted elementary students' perception on fun factors of the classes for the gifted. Data for this research was gathered through brainstorming of 80 students currently attending classes for the gifted. 10 of them were selected as focus group for classification and evaluation, and 140 gifted-class students were asked of the fun factors for level of agreement after concept map analysis. Results of the research were, first, 46 final statements about fun factors which are categorized into 6 sub-categories ('the gifted class teacher's encouragement and feedback', 'confidence and chance', 'teamwork and intimacy with gifted friends', 'fulfilling, beneficial, and rewarding feeling', 'new and special experiments', 'qualitatively different class level and learning environment'). Second, the gifted students showed highest level of agreement on 'new and special experiments' category among the 6 sub-categories. Implication of this research on the field has been discussed.

• Journal of Environmental Health Sciences
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• v.46 no.2
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• pp.128-135
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• 2020

Objective: The objectives of this study are to report the number of humidifier disinfectant (HD) associated health problems, including HD associated lung injury (HDLI), by year. This data was analyzed by the type of HD and HD brand. Methods: A total of 530 patients registered with the national program on HD through its third round were distributed based on the year when they developed their first health problem including HDLI (N=221). The distribution of health problems at diagnosis was clinically evaluated in order to examine the association between their lung injury and the use of HD. Results: The number of HD associated victims and HDLI patients was found to rise sharply from 2008 to 2011, with a peak in 2011. This trend was found not only for HD brands containing polyhexamethylene guanidine phosphate (PHMG), but also chloromethylisothiazolinone/methylisothiazolinone (CMIT/MIT). The number of patients who responded as developing health problems in the specific year was 35 for 2008, 51 for 2009, 108 for 2010 and 182 for 2011. Other types of HD brands and HD chemicals did not follow the trend of abrupt increase in HD associated patients since 2008. Conclusion: This study found the number of HD associated victims and HDLI patients who used HD brands containing PHMG sharply increased starting in 2008. A significant change in the process of manufacturing PHMG can be suspected with the abrupt rise in HD associated patients in specific years.

• Korean Journal of Construction Engineering and Management
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• v.11 no.6
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• pp.65-77
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• 2010

Our nation's housing construction is given much weight over 32% in 2007 and especially apartment is taking over 67%. If we put into construction environment consideration, we are having a trouble with price cap policy and the realestate recession due to the global economic crisis. So in order to get competitive power and supply of cheap apartment, the necessity of cost saving is increasing. This research collected the past constructed apartment project's cost saving examples which were influencing on the construction cost, quality and time. We analyzed collected cost saving datum and assorted these in compliance with classification system. By analysis of correlation among datum with exclusion and integration, we make a propose cost saving Checklist that will be a base data to give a chance to use in working level and other research.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.8
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• pp.3829-3833
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• 2012

Objective: The objective of this study was to examine the practice and associated factors of breast self-examination (BSE) among Malaysian women. Methods: For this cross-sectional study 250 women were selected by a simple random sampling technique. The questionnaire was consisted of three parts: socio-demographic characteristics, knowledge about BSE, and practice of BSE. Obtained data was analyzed using SPSS version 13. T-test and ANOVA test were used to explore the relation between socio-demographic characteristics and the practice of BSE. Results: About 32% of the participants reported that they have had family history of cancer and about 20% of the participants reported that they have had family history of breast cancer. The majority of the participants (88.8%) have heard about breast cancer and 78.4% of the participants have heard about BSE. Race, marital status, residency, regular exercise, awareness about breast cancer, belief that breast cancer can be detected early, belief that early detection improves the chance of survival, family history of cancer, family history of breast cancer, awareness about BSE, and belief that BSE is necessary, significantly influenced the practice of BSE among women. Practice of BSE on monthly basis was found to be 47.2% among the study participants. Conclusions: The socio-demographic characteristics significantly influence the practice of BSA among women in Malaysia. The findings of this study might not only influence the planning of specific screening interventions and strategies in Malaysia but might also be important for the relevant international communities, interested in the peculiarities of BSE incidence in different countries.

• The Journal of Korean Medicine
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• v.25 no.1
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• pp.1-20
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• 2004

Objectives : Based on the analysis of Yin-Yang[음양] characteristics and symptoms, each person is classified into Yin-Yang. Also the validity of the result is statistically analized. Methods : From Feb. to May. 2003, the data were collected through a questionnaire given to 690 patients. The questionnaire was composed of 34 items which were about personality, habit, sweat, response to coldness, thirst, bowel, urine, physical shape, and menstruation for women only. SD(Semantic Differential Technique) used for each item, each item is measured as a contrast of two opposite symptoms. Reliability analysis was used to select items and categories. Based on means of items in each category the Yin-Yang index was developed. The validity of Yin-Yang index was investigated using classification and clustering analysis. In statistical analysis, SPSS V10.0.7 PC was used. Results : The obtained results are summarized as follows: 1) We constructed Yin-Yang index based on the middle point of the sum of categorical means. Then we classified each person into Yin or Yang. 2) To investigate the validity of the distribution of personal Yin-Yang degree, the crosstabulation of results from clustering and classification was used. The hit ratio for classification was much higher than Maximum Chance Criterion($C_{max}$), and concurrence in crosstabulation was successful. Therefore we can infer that the distribution of Yin-Yang was valid. Conclusions : Based on Yin-Yang characteristics and symptoms, we was analyzed personal degree of Yin-Yang, and confirmed the validity of its distribution. Therefore this index can be used further for Bian-Zheng [변증] and classification of the constitution.

• Journal of Korean society of Dental Hygiene
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• v.13 no.1
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• pp.1-12
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• 2013

Objectives : In order to make a proposal of a Korean standard dental hygiene curriculum, the job description of the National Health Personnel Licensing Examination Board was analyzed to prepare a job analysis matrix of dental hygienist to select required core competency. Methods : Data were analyzed to test the job validity of dental hygienist and categorize the duties of dental hygienist. A proposal of a standard dental hygiene curriculum was mapped out by making a comparative analysis of the courses necessary for American authorization of dental hygiene curriculum, existing proposals of Korean standard dental hygiene curriculum and the courses of the departments of dental hygiene offered by domestic three-year colleges and four-year universities. Results : Basic medicine courses were reinforced or newly offered to provide an opportunity for students to transfer to a domestic four-year university or to a foreign university. In the field of clinical dental hygiene and practice, preventive dentistry, prophylaxis and practice were integrated, and the names of the related courses were unified to give a chance for students to engage in comprehensive dental hygiene practice. There were different courses for dental clinical science at present. In this proposal, students should earn 125 credits in total. Conclusions : Standard dental hygiene curriculum proposal was required by three-year and four-year colleges across the nation. To make it happen, the original names of dental hygiene courses should be used, and the dental hygiene certification and evaluation institute that is under the umbrella of the Korean Dental Hygienists Association should lay out the standard of the KSDHEP to facilitate the utilization of the standard dental hygiene curriculum proposal.