• Journal of Engineering Education Research
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• v.24 no.2
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• pp.29-40
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• 2021

This research aims to examine the relationship between major satisfaction and psychological well-being of female engineering students. To achieve this goal, first, differences in major satisfaction and psychological well-being among engineering students were examined. Second, differences in major satisfaction and psychological well-being among female undergraduate students were investigated. In addition, the effects of psychological well-being, as perceived by undergraduate students by gender and major, on major satisfaction were explored. A total of three hundred and forty-nine (349) undergraduate students from two universities in Korea responded to survey based on a two-variables scale. The findings were that, firstly, male engineering students scored higher in two variables including their most sub-factors, and that gender differences in relation satisfaction as well as positive relationship with others, autonomy, and environmental mastery were statistically significant. Secondly, female engineering students scored higher in major satisfaction and several sub-factors of two variables, and that major differences in major satisfaction (total), social perception satisfaction, and autonomy - a sub-factor of psychological well-being - were statistically significant. Thirdly, a positive correlation among major satisfaction and psychological well-being was identified. Finally, psychological well-being could explain about 19% of major satisfaction. The practical implications of these findings are discussed herein, with attention on education for promotion of major satisfaction.

• Journal of Korean Society of Forest Science
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• v.86 no.4
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• pp.476-488
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• 1997

The purpose of this study was to figure out the suitable field standards for revegetation measures on cut-slopes in consideration of the environmental factors. The field survey was conducted from 1995 to 1996 on highway cut-slopes. The results obtained could be summarized as follows; The major revegetation measures surveyed were 5 major measures as a whole in descending order of seed-spraying measures, block-sod pitching measures, latticed block pitching measures, hydro-seeding measures with seed-fertilizer-soil materials, and several netting measures on highway cut-slopes. According to the analysis of the environmental factors, the plant coverage was affected several major environmental factors which were soil factors(soil hardness, soil texture, soil and rock condition), and site factors(slope gradient, slope length). From a viewpoint of optimum selection, the major 3 factors(soil factors, slope gradient factors, slope length factors) should be considered for selection of revegetation measures on highway cut-slopes.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.11 no.4
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• pp.103-118
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• 2008

University campuses, in Korea, experienced expansion during the 1970's and exceeded its capacity in the 1980's. On the other hand, universities needed to deal with increasing capacity and expansion of its facilities. This study is carried out in three steps : developing the factors of environmental friendly assessment, designing an assessment table based on specific categories, and applying the categories to the campus of Seoul National University. The assessment factors and assessment table were designed through a survey of experts in landscaping, architecture, and urban planning. The elements of major categories were classified as follows; 1) Management of land and accessibility, 2) Pollution and waste matter, 3) Energy, 4) Natural resources, 5) Operation, maintenance and management of environmental friendly campus. And, this study classified five major categories into twenty subcategories on the evaluation of the environmental friendly campus. The twenty subcategories include various fields such as architecture, landscape architecture, environment, urban design, and social sciences etc., profound studies at this line should make more precise assesment guidelines.

• Environmental Engineering Research
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• v.23 no.4
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• pp.406-419
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• 2018

In planning public service systems such as waterworks, the design population is very important factor. Owing to the limitations of the indirect method, two new models, which take into consideration urban characteristics, were developed to accurately predict external migration rate (EMR), which is an essential component in estimating reliably the design population. The root mean square error (RMSE) between the model values and observed values were 10.12 and 15.58 for the metropolitan cities and counties respectively and were lower compared to RMSE values of 27.31 and 28.79 obtained by the indirect method. Thus, the developed models provide a more accurate estimate of EMR than the indirect method. In addition, the major influencing factors for external migration in counties were development type, ageing index, number of businesses. On the other hand, the major influencing migration factors for cities were project scale, distance to city center, manufacturing size, population growth rate and residential environment. Future medium and long-term studies would be done to identify emerging trends to appropriately inform policy making.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.23 no.1
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• pp.89-96
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• 2020

Adverse impact of Particulate Matters(PM10, PM2.5; PMs) significantly affects daily lives. Major countermeasures for reducing concentration of PMs were focused on emission source without considering spatial difference of PMs concentration. Thus, this study analyzed spatial·temporal distribution of PMs with observation data as well as potential contributing factors on PMs concentration. The annual average concentration of PMs have been decreased while the particulate matter warnings and alerts were significantly increased in 2018. The average concentration of PMs in spring and winter was higher than the other seasons. Also, the spatial distribution of PMs were also showed seasonality while concentration of PMs were higher in Seoul-metropolitan areas in all seasons. Climate variables, emission source, spatial structure and potential PM sinks were selected major factors which could affects on ambient concentrations of PMs. This paper suggest that countermeasures for mitigating PM concentration should consider characteristics of area. Climatic variables(temperature, pressure, wind speed etc.) affects concentrations of PMs. The effects of spatial structure of cities(terrain, ventilation corridor) and biological sinks(green infrastructure, urban forests) on concentration of PMs should be analyzed in further studies. Also, seasonality of PMs concentration should be considered for establishing effective countermeasures to reduce ambient PMs concentration.

• Journal of Environmental Health Sciences
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• v.22 no.1
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• pp.65-81
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• 1996

This study was conducted from march 20 through April 20, 1992, jn order to figure out the factors affecting behavior of the people on environmental health. 1, 261 people were selected by sampling from Seoul, Pusan, Taegu, Taejon and Kwangju. Questionnaire forms were prepared and the persons selected were-interviewed by trained interviewers. The data collected were analyzed in order to determine factors affecting kowledge, attitude and practice on environmental health in major cities in Korea. The major results are as follows: 1. The people who got high KAP score were found not to practice what they know. The people who got lower scores were found to use their knowledge in practical life. 2. Correlation between knowledge, attitude, and practice (KAP) on environmental health was statistically significant (p < 0.001). 3. The levels of KAP on environmental health affected by variables of gender and marital status were statistically significant (p < 0.01). 4. Variables of education, occupation, religion and economic status affected the levels of KAP significantly (p < 0.01). 5. The levels of KAP on environmental health by variables of health education on environmental health were statistically significant (p < 0.001). 6. The levels of KAP of the people on environmental health by demographic variables showed a reverse relation statistically (p < 0.001). 7. The levels of KAP of the people on environmental health had correlation with education level and the KAP level had correlation with knowledge (p < 0.001). 8. The KAP levels of the people on environmental health had correlation with environmental health education (p < 0.001). 9. The total variables affecting KAP of the people on environmental health had 14% variance and environmental health education was the highest($\beta$=0.23827), education level was the next($\beta$=0.12442), and economic status was ($\beta$=-0.06970), age ($\beta$=-0.06710) and print media ($\beta$=0.06539). 10. The variables most affecting KAP of the people on environmental health were environmental health education(r=0.2980) and education(r=0.2419) and the next were age, marital status, religion, electronic media, print media, place of birth and gender. 11. The most important variable affecting KAP level of the people on environmental health was education level.

• Journal of Family Resource Management and Policy Review
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• v.14 no.2
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• pp.91-108
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• 2010

The purpose of this study is to examine the level and major influencing factors of pro-environmental consumer consciousness and resource-saving behavior of adolescents. The research was conducted in 2007 using a written questionnaire completed by 545 male and female high-school students who reside in Seoul and Kyunggi Province. The data was analyzed using statistical methods such as frequencies, percent, means, standard deviations, Crobach's ${\alpha}$ coefficient, one-way ANOVA and multiple regression analysis using the SPSS statistics program. Major findings were as follows. The higher level background parameters for pro-environmental consumption consciousness were students who were: male in higher grades; given a higher allowance of pocket money. Likewise, a higher degree of mutual communication within their family, mass communications' contact and environmental information also showed a higher level of pro-environmental consumer consciousness.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• v.4 no.2
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• pp.71-78
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• 2000

The chlorination of municipal drinking water supplies leads to the formation of so-called disinfection by-products(DBPs), many of which have been reported to cause harmful health effects based on animal studies. This study was conducted: 1) to observe seasonal changes in the major DBPs at four sampling sites on a drinking water distribution system located in Chunchon, Kangwon Do; and 2) to examine the effects of major water quality parameters on the formation of DBPs. During the field sampling, the water temperature, pH, and total and free chlorine residuals were all measured. The water samples were then analyzed for total organic carbon(TOC) and eight disinfection by-products in the laboratory. Chloroform, dichloroacetic acid, and trichloroacetic acid were the major constituents of the measured DBPs. The concentrations of the total DBPs were highest in fall, particularly in October, and lowest in summer. The concentrations of the total DBPs increased with increasing TOC concentrations. Multiple regression analyses showed that the concentrations of chloroform, bromodichloromethane, and chloral hydrate were linearly correlated with the pH. Other water parameters were not included in the regression equations. Accordingly, these results suggest that TOC and pH are both important factors in the formation of DBPs.

• Journal of Korean Society of Environmental Engineers
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• v.31 no.9
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• pp.811-816
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• 2009

Along with research into the latest preservation treatments for items of cultural heritage, studies of the preservation environment and the effect of damage are also increasing. This study conducted comprehensive research into the temperature, humidity, acids, ammonia, reduced sulfur compounds, aldehydes with various ingredients in the exhibition hall, show case, and storage of three type museum. As a result, temperature, humidity, TVOCs, acetaldehyde frequently exceeded the domestic and international standards for a museum preservation environment and indoor air quality. Also, formaldehyde, chloride, and ammonia exceeded the standards intermittently. Temperature, humidity, TVOCs, acetaldehyde were evaluated to be the major influential factors. In order to control the major factors, apart from temperature and humidity, that cause damage in the museum environment, it is deemed necessary to complement this system with an effective air filter or remover.

• International conference on construction engineering and project management
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• 2022.06a
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• pp.458-464
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• 2022

Hazard recognition is considered as one of the pre-requisites for effective hazard management and injury prevention. However, in complex and changing environments, construction workers are often unable to identify all possible hazards that can occur in the jobsite. Therefore, identification of factors that impact hazard recognition in the work environment is necessary to reduce safety incidents as well as to develop strategies that can improve worker's hazard recognition performance. This study identified factors/problems that impact worker's hazard recognition abilities and suggested some potential technologies that can mitigate such problems. Literature reviews of journal articles and published reports related to hazard recognition studies were conducted to identify the factors. The study found out that the major factor responsible for affecting worker's hazard recognition abilities were human-related. Industry factors, Organizational factors and Physical factors of the site were the other factors identified from the study that impact worker's hazard recognition performances. The findings from the study can help site personnel recognize areas where effective measures can be directed towards worksite safety of workers while working in complex construction environments.