• Proceedings of the Membrane Society of Korea Conference
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• 1992.10a
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• pp.74-75
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• 1992

침출수를 처리하는 방법은 여러가지가 있으나 주로 생물학적 처리방법과 물리화학적 처리 방법으로 구분할수 있다. 특히 침출수는 매립물의 종류에 따라 침출수 수질이 상당히 차이가 나는데 도시쓰레기 매립에 의한 일반폐기물 침출수는 그 처리 및 관리가 용이하나 특정 폐기물 침출수는 염의 농도가 높고 중금속을 다량 함유하고 있어 1차 처리후에도 방류가 곤란하다. 이 경우는 특정 폐기물 매립지인 H매립장의 침출수에 대하여 Pilot Test를 통한 적정 Process 경제성을 검토한 것이다.

• Journal of the Economic Geographical Society of Korea
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• v.21 no.4
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• pp.393-408
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• 2018

This study aims to raise our understanding of how memory of a social group is transnationally appropriated and utilized by other subjects. A collective sense of justice for comfort women has been handed to many Koreans either in Korea or in overseas countries since the early 1990s. In the U.S., the first comfort women monument was established in Palisades Park, New Jersey by Korean-Americans and local politicians as they wanted to strengthen the common sense of Korean ethnicity with the symbolic power of the memoryscape. Exploring the diffusion of comfort women memorials in the U.S., this study examines the complexity and multilayered structure of memory politics and its transnational mobility, which are connected to Korean-Americans' struggle for belonging.

• Journal of the Economic Geographical Society of Korea
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• v.15 no.4
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• pp.660-675
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• 2012

This paper aims at, analyzing the characteristics of immigration path, residential status and residential location preference of Korean immigrants in Washington State of United State. The main results of this study are as follows. Firstly, according to the questionnaire survey results, respondents tend to prefer own housing as their incomes are higher. Secondly, Location factors which respondents most prefer are safety, natural environment and school district. Thirdly, household income influences the housing ownership rate of respondents, according to the result of binomial logistic regression analysis on the impact of individual characteristics of the respondents on the housing ownership structure. Finally, according to the results of logistic regression analysis on the impact of individual characteristics and housing ownership structure of the respondents on the residential location preferences, (1) respondents who own housings more prefer school district as residential location factor, (2) respondents their age are over 40 years old prefer safety/amenity as residential location factor, (3) respondents their immigration period are more than 10 years prefer safety/amenity as residential location factor, (4) respondents their initial immigration region are not Washington state prefer safety/amenity as residential location factor.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38B no.3
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• pp.180-189
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• 2013

The objective of this paper is to analyze the profitability of expanding the high-speed internet network and provide the strategy and policy for the government and telecommunication providers to fill the information gaps in rural areas. First, we analyzed the situation where the accessibility of high-speed internet networks is deficient and reasons why it is slow to build the communication network infrastructure in the remote agricultural and fishing areas. Then economic analysis was performed to find out how much it cost to make it possible for every village of rural areas to access the high-speed internet network as well as sensitivity analysis.

• Korean Journal of Comparative Education
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• v.24 no.3
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• pp.199-226
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• 2014

The aim of this study was to determine key experiences of homestay guardians of unaccompanied minor Korean adolescents studying abroad in the United States through qualitative research method of grounded theory methodology. This study identified guardianship experiences and the process of adjustment to life with homestay students through in-depth interviews with 12 subjects who are Korean guardians in the United States. The results of this study classified "started with concern" as a category that leads guardians to start providing homestay accommodation, and "other's recommendation," "need for financial support," and "unexpectedly" as subcategories. This study identified "act as a mediator to resolve differences" as a key experience of guardians, and classified subcategories are "parental role" and "calculation of gains and losses" on a personal level; and "feel sorry for own children," "limited leeway of the family," and "formation of relationship between own children and homestay students" on a family level. Developed subcategories are "thirsty for attention," "vulnerability," "task on freedom and control," and "regrettable feeling in the absence of communication" with respect to relationship with students; "grade expectations," "one-way communication," "trapped between parents' and students' demands" in regard to relationship with parents; and "advice from school" in the aspect of school. "Cultural difference," "preparedness of students and parents," "age differences between guardian's children and students," "family support," "similar personalities," "guardian's motivation," and "parent's attitude" are subcategories that affect central phenomenon of guardians.

• Korea journal of population studies
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• v.10 no.2
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• pp.17-45
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• 1987

This study contributes to understanding women's labor market behavior by focusing on a particular set of labor force transitions - labor force withdrawal and entry during the period surrounding the first birth of a child. In particular, this study provides a dynamic analyses, using longitudinal data and event history analysis, to conceptualize labor force behaviors in a straightforward way. The main research question addresses which factors increase or decrease the hazard rates of leaving and entering the labor market. This study used piecewise Gompertz model, following the guide of the non-parametric analysis on the hazard rates, which allowed relatively detailed description on the distribution of timing of leave and entry to the labor market as parameters of interest. The results show that preferences and structural variables, as well as economic considerations, are very important factors to explain the labor market behavior of women in the period surrounding childbirth.

• Korean Journal of Culture and Social Issue
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• v.12 no.5_spc
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• pp.169-203
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• 2006

The purpose of this study is to compare happiness between Korean elderly residing in South Korea and those residing in New York City area in United States (Korean American elderly), and to investigate important factors determining their happiness. We collected data from 1,988 elderly residing in Chuncheon and Seoul in South Korea and 173 elderly residing in New York City area. All samples were over 65 years old in 2005. In general, Korean American elderly seemed happier than Korean elderly. Our specific data analysis showed that Korean American elderly had higher scores in non-agitation, satisfaction for aging, and satisfaction for life than Korean elderly. And they showed secure attachment more and insecure attachment less than Korean elderly. Social support network, satisfaction in psychological need, health, daily routines, and social background predicted happiness significantly for both Korean American elderly and Korean elderly. For American Korean elderly, satisfaction in psychological need predicted satisfaction for aging, satisfaction for life, and secure attachment significantly when social background, health, and daily routine were controlled. For Korean elderly, satisfaction in psychological need predicted all sub-factors of happiness significantly, and social support network also predicted happiness significantly when social background, health, and daily routine were controlled. Additional data analysis compared social support network, satisfaction in psychological need, health, daily routine, and social background between Korean American elderly and Korean elderly. Korean American elderly seemed to have more solid social support network and to have higher satisfaction in psychological needs than Korean elderly. Korean American elderly perceived themselves as healthier, and their life style related health was much healthier than Korean elderly. In social background, Korean American elderly had higher education and economic level than Korean elderly. Roles of social support network and satisfaction in psychological need for happy aging were discussed in terms of previous theoretical explanation of successful aging.

• Korean Journal of Social Welfare
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• v.65 no.4
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• pp.245-269
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• 2013

Self-sufficiency has been recognized as one of the most important welfare goals for women in the domestic violence field since the welfare reform in the U.S. A qualitative research design was conducted to explore the self-sufficiency experience of Korean-American single mothers with the history of domestic violence in poverty. The meaning of 'self-sufficiency' to participants is that a continuing task or process in life to move toward being independent mentally as well as economically. Their challenges toward self-sufficiency include the period of restoration of their potentials for self-sufficiency destroyed by domestic violence victimization and divorce, and the period of developing their sustainability for self-sufficiency. Their needs for 'help and support similar to care from the woman's parents' home', 'welfare service of select and concentration', 'mature dependency and self-sufficiency', and 'self-sufficiency from survival to dream come true' to cope with the challenges formentioned are reported. Concrete strategies for the development of self-sufficiency polices and services sensitive to immigrant single mothers with the history of domestic violence are suggested.

• Journal of Technology Innovation
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• v.6 no.1
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• pp.163-186
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• 1998

The psychological work environments which facilitate technology innovations in organizations are divided into two dimensions of supportive work environments and uncertain work environments. The measurement variables have significant reliability. And the confirmatory factor analysis confirm the construct validity of two dimensional work environments. Two work environments have the significant effects on motivations to the technology innovations. So, simple and hierarchical regression analyses confirm criterion-related validity. Therefore, Both of the uncertain work environments(uncertainty of external-organizational environments and tasks) and the two important work environments(supporting idea, resource supply, job autonomy) are the two important psychological work environments which indicate technology innovations in organizations. Measures for innovative psychological work environments are provided.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.270-272
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• 2019

택배 배달 서비스는 전국적 물류의 중요 부분이다. 노선이 잘못되면 시간과 비용 면에서 경제적 불이익이 발생할 수 있다. 이러한 위험을 최소화하기 위해 물류 회사나 IoT 기기 등에서 실제 배송 데이터 10만 개를 수집하여 최소 거리와 최소 시간의 관점에서 최적의 허브 후보 위치를 분석하였다. 택배의 공통 경로 데이터는 실제 택배의 경로 데이터에 Longest Common Route Sequence 알고리즘을 사용하여 계산하였다. 계산한 택배의 공통 경로 데이터를 기반으로, 최적의 허브 후보 위치를 설정하고, 이로부터 최적의 거리와 시간을 계산할 수 있다.