• The Journal of the Korea Contents Association
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• v.12 no.10
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• pp.453-465
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• 2012

The major purpose of this study is to examine the effects of customers' perceptions toward service quality of mobile music service on customer loyalty and switching intention. For this purpose, this study posited three service quality characteristics including interface, service, price quality as key determinants of customer loyalty and switching intention based on relevant literature reviews. A research model and hypotheses concerning the relationship between these variables were constructed. Moreover, this study explored the moderating effects of attractiveness of alternative and switching costs on the relationship between customer loyalty and switching intention. An online survey was administrated on 433 mobile music service users and a simple, multiple, and hierarchical regression analysis were employed. The results indicated that all of interface, service, price quality have significant positive influences on customer loyalty, and both of service quality and attractiveness of alternatives have influences on the switching intention in a positive way. On the other way, it was shown that switching costs have a negative influence on the switching intention. The moderating effect of attractiveness of alternatives on the relationship between customer loyalty and switching intention was also found. The implications of these results are discussed.

• Korea journal of population studies
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• v.19 no.1
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• pp.5-44
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• 1996

Wornen's lahor market participation as well as the policy concern for wider utilization of married women, have continuously grown up. However, research efforts on the determinants of women's labor market participation, in the context of the relationship hetween life courses and active entry into lahor market, has been far behind the growing interest in this field. This study has conducted an event histoiry analysis of women's labor market transition utilizing personal occupational history data collected by the Korea Institute for Women's Development in 1991. The analysis is divided into tow parts: First part introduces logit regression to analyze the determinants of women's labor market participation and exit. The second part employs Cox regression to see the variation of transition rate between employment and non-employment. The result shows that there is a wide variation in women's labor market participation according to age, cohort, and family formation. Special note is needed for the significantly negative effect of marriage and child birth on labor market participation. The transition pattern of lower class women with less education fits well to the prediction of neo-classical economics; but the tendency of highly educated women's regression to non-employment reveals the strong influence of the unfavorable labor market structure, which can be better explained by the neo-structuralist perspective. There is a strong trade-off between productive and reproductive labor of women, which can only be corrected by strong policy implementation, such as extended child care facilities, abolition of discriminatory employment practices, and expansion of flexible part-time employment.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.246-246
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• 2020

최근 우리나라에서 농업용수의 다원적 기능에 대한 공감대가 형성되고 작물생육에 필요한 관개용수로만 인식되던 농업용수의 개념이 농촌생활환경개선을 포함하는 다양한 지역용수로의 포괄적 개념으로 전환되고 있다. 농업용수는 식량생산 이외의 효용을 위한 다원적 기능을 가지며 농촌지역의 각종 생산활동과 생활조건의 유지개선을 위한 농업용수의 다원적 기능에 관한 관심이 증가하는 추세이다. 농업용수에서 발생하는 회귀수는 유역의 용수공급계획, 하천 유황의 예측, 관개용수 사용량 결정, 하천 건전화 방지, 수생생태계 보호 및 생물 다양성 확보 등 농업용수의 효율적 사용 및 환경생태유지를 위해 매우 중요한 역할을 하고 있다. 농업용수 회귀수량은 농업용수 중 하천으로 회귀하는 수량을 의미한다. 본류의 생태 유량 확보에 농업용수 회귀 수량이 기여하고 있으며 본류 하천의 환경 보전 기능을 하고 있다. 또한, 수생태계 보호 및 생물 다양성 확보 등 환경 생태 유지에 매우 중요한 역할을 하고 있다. 하지만 농업용수 회귀수량이 하천 수생태에 미치는 영향 분석 연구는 미흡한 실정이다. 따라서 본 연구의 목적은 대사 저수지 유역을 대상으로 농업용수 회귀 수량이 하류 하천 수생태에 미치는 영향을 정량적으로 평가하고자 한다. 본 연구에서는 회귀 수량은 관개용수량, 배수량, 침투량, 담수심 등 물수지 항목을 논물수지 모형에 적용하여 산정하였으며, 하류 하천의 생태유량 산정을 위해 대사저수지 하류에 위치한 생물측정망 자료를 통해 대표 어종을 선정하였다. PHABSIM 모형을 이용해 모의 대상 지역 특성 자료 및 인근 소하천 생물측정망 자료를 바탕으로 HSI 기반 대표 어종 서식처 환경에서 최적 생태유량을 산정하였다. 이를 통해 추정된 농업용수 회귀 수량에 따른 필요 유량이 어류 서식환경에 미치는 영향을 평가하였다. 본 연구 결과 대사저수지 하류 하천에서 농업용수 회귀수량이 차지하고 있는 기여도 큰 것으로 분석되었으며, 최적 생태유량과 비교한 결과 농업용수 회귀수량이 수생태(어류)에 미치는 영향이 큰 것으로 나타났다. 따라서 농업용수 회귀수량은 하류 하천의 하천유지수량뿐만 아니라 하천 환경생태유지에도 매우 중요한 역할을 하고 있음을 알 수 있다.

• International Journal of Highway Engineering
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• v.9 no.2 s.32
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• pp.1-11
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• 2007

The rapid growths of economy and automobiles since the 1970's have caused serious traffic jams and environmental disruption in urban areas. To relieve these problems caused by urbanization, there should be considered alternative means of transportation modes. Many developed countries have accepted bicycles as a so called "Green Mode" for environmentally oriented strategies to increase the qualities of urban lives. Korea have also attempted various means to raise bicycle usages. In this research, significant factors affecting bicycle crashes at signalized intersections in urban areas were studied. The model results showed that Poisson regression is the best fit methodology for data modeling and revealed that traffic volume, a number of driveways, configuration of the ground, presence of bicycle path, school, and bus stop, residential area, size of intersection are significant factors affecting the bicycle crashes.

• Journal of Environmental Health Sciences
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• v.26 no.2
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• pp.1-5
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• 2000

연속형 혐기성처리 반응조에서 배양된 수소발생 슬러지를 이용하여 증온 조건에서 회분식 혐기성 처리방법으로 유기성 폐수로부터 전환되는 수소가스 및 대사산물들에 대한 연구를 수행하였다. 수소발생에 대한 기질로는 sucrose를 이용하였다. 처리과정에서 발생된 누적수소가스, 휘발성지방산(VFAs) 및 solvents는 Gompertz equation을 이용한 비선형회귀분석을 통하여 계산하였다. 처리과정 중 수소가스는 반응초기에 발생하였고, 발생된 가스내 수소가스가 차지하는 비율은 약 20%이었다. 반응 전과정에서 메탄가스는 발생하지 않았다. 비수소가스발생율은 sucrose 농도가 40 g/l일 때 0.956 ml/g VSs/h이었으며, sucrose 농도가 300g/l의 경우는 0.011 ml/g VSS/h이었다. 수소가 발생하는 기간 동안 VFAs의 생성은 acetate, butyrate의 순으로 높게 생성되었으나, propionate로의 전환은 발견되지 않았다. solvents의 경우 butanol이 가장 높게 발생하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.44 no.2
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• pp.245-256
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• 2024

Since 2020, quantitative easing and easy money policies have been implemented for the purpose of economic stimulus. As a result, real estate prices have skyrocketed. In this study, the relationship between sales and rental prices by housing type during the period of soaring real estate prices in Busan was analyzed spatio-temporally. Based on the actual transaction price data, housing type, transaction type, and monthly data of district units were constructed. Among the spatio-temporal analysis models, the SpVAR, which is used to understand the temporal and spatial effects of variables, and the GSTAR, which is used to understand the effects of each region on those variables, were used. As a result, the sales price of apartment had positive effect on the sale price of apartment, row house, and detached house in the surrounding area, including the target area. On the other hand, it was confirmed that demand was converted to apartment rental due to an increase in apartment sales prices, and the sale price fell again over time. The spatio-temporal spillover effect of apartments was positive, but the positive effect of row house and detached house were concentrated in the original downtown area.

• Korean Journal of Social Welfare
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• v.64 no.4
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• pp.337-357
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• 2012

This study explores a changing social expenditure structure of welfare states on new social risks, using logistic regression analysis with Panel Corrected Standard Errors Model on panel data of 1997-2007 years from 27 OECD nations. The result of this study presents that social expenditure structures have been adjusted with new social risk structure due to trade openness, female employment rates, and child population rates. Greater trade openness, higher women's employment rates, and lower child population rates are, more social investment expenditures are than income security expenditures. Rates of employment in service industries and elderly population rates are not statistically significant on the change of social expenditure structure. This result does not imply a complete switch from demand-based to supply-based social policy, but somewhat reflects transitions of a social welfare system for changing economic and social environments in order to sustain welfare state economically.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.207-220
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• 2016

Paradigm for supporting housing for low-middle income class has been changing from public rental housing to Housing Voucher. Housing Voucher started first in Seoul since 2010, and it has been expended to other areas in 2014. Given the dearth of previous research data, this study aims to analyze options determinants that the beneficiaries could consider in choosing their residential area. In this study, the researcher used for the research methods, a quantitative analysis by Geographically Weighted Regression (GWR) and Ordinary Least Square (OLS) has been conducted. As a result, the accessibility to social welfare centers, public transportation and job opportunities emerged main factors to for the Housing Voucher recipients in Seoul to choose their residential area. This is different results from previous research, which has two implications. First, reexamination of Housing Voucher is necessary. Second, Housing Voucher beneficiaries should include not only the housing but also support for family and welfare system access.

• Tribology and Lubricants
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• v.23 no.4
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• pp.156-161
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• 2007

The friction test using disk-on-pad type was carried out and regression analysis with friction parameters was applied fur wear loss presumption of motorcycle break disk. The wear loss has an effect on the frictional factor such as applied load, sliding speed, and number of ventilated disk hole. However, it is difficult to know the mutual relation of these factors on wear loss of motorcycle break disk. From this study, the result was shown that the regression analysis equation containing 4 elements were constructed and this equation had a trust of 95% in wear loss presumption of motorcycle break disk. It is possible to apply for another automobile parts.

• Journal of Digital Convergence
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• v.22 no.2
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• pp.11-20
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• 2024

The aim of this study was to develop a group counseling program as an integrative psychotherapy program to alleviate depression and physical symptoms of 22 women in 60s who experience depression as a symptom of conversion disorder and also tried to prove the effectivity of the program by using comparative analyze of pre-post changes. The Korean-style Elderly Depression Test(K-GDS), Symptom Interpretation Questionnaire(SIQ), Hamilton Depression Assessment Scale Questionnaire, PHQ-9 and interpersonal relationship scale (RCS) were conducted and pre-post-corresponding sample t-test, correlation analysis and multiple regression analysis were performed. The results showed depression reduction, physical symptoms alleviation, decreases in negative emotions and beliefs, and positive changes in interpersonal relationships. The implications and limitations of this study were discussed.