• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2001.09a
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• pp.172-175
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• 2001

이 연구에서는 5개의 시추공에 대한 양수시험을 실시하여 대수층의 수리학적 이방성과 지하수의 주 유동방향을 규명하고자 하였다. 코아검층 및 초음파주사검층을 통해 각각의 공에 대한 균열방향을 결정하고 이를 토대로 통합해본 결과 크게 세 방향의 균열군이 집중성을 보였다. 가장 빈도가 높은 균열의 방향은 N0$^{\circ}$~40$^{\circ}$E/30$^{\circ}$~50$^{\circ}$SE 그리고 N30$^{\circ}$~ 80 $^{\circ}$W/20$^{\circ}$~50$^{\circ}$ NE이 방향이 함께 나타났으며 두 번째 균열의 방향은 N0$^{\circ}$ ~50$^{\circ}$E/60$^{\circ}$ ~80$^{\circ}$NW로 나타났다. 세 번째 방향은 N30$^{\circ}$~50 $^{\circ}$W/70$^{\circ}$~80$^{\circ}$SW방향의 균열로 구성된다. 이처럼 지표하에서는 크게 세 방향의 균열이 다른 방향을 보이는 균열에 비해 상대적으로 큰 빈도를 가지며 발달하고 있음을 알 수 있다. 대수층이 이방성이고 균질하다는 가정하에 양수시험을 실시하여 각각의 공에 대한 최대 투수량계수 ( $T_{{\varepsilon}{\varepsilon}}$)와 최소 투수량계수 ( $T_{ηη}$)값을 산출하고 주 텐서방향 ($\theta$)을 결정하였다. 그 결과 BH-1, BH-4, BH=5공을 제외한 BH-2, BH-3호공에서의 이방성 투수량계수텐서값은 이 논문의 가정인 대수층이 이방성이고 균질하다는 가정에 일치하지 않았다. 따라서 원형좌표계에 도시하였을 때 다른 공에 비해서 비균질성이 심한 결과로 인해 이방성타원체 에서 많이 벗어남을 보였다. 이로인해 3개의 공 BH-1, BH-4, BH-5호공을 사용하여 대수층의 이방성을 분석하여 보았다. BH-1호공에서의 $T_{{\varepsilon}{\varepsilon}}$는 171.90 $m^2$/day, $T_{ηη}$는 71.0l $m^2$/day이고 주 텐서방향은 Nl5.39$^{\circ}$ E로 나타났다. BH-4호공의 $T_{{\varepsilon}{\varepsilon}}$는 268.20 $m^2$/day, $T_{ηη}$는 28.75 $m^2$/day이고 주 텐서방향은 N7.55$^{\circ}$E이며 BH-5호공에서의 $T_{{\varepsilon}{\varepsilon}}$는 168.40 $m^2$/day, $T_{ηη}$는 66.80 $m^2$/day이고 주 텐서방향은 N76.59$^{\circ}$E로 나타났다. 이처럼 연구지역에서의 각각의 공에 대한 투수량계수텐서는 서로 다르게 나타났으며 이에 따른 주 텐서방향도 서로 다름을 알 수 있다.

• Korean Journal of Social Welfare
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• v.59 no.3
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• pp.5-32
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• 2007

Using a national survey data conducted by the Beautiful Foundation, this study attempts to examine the bilateral relationships between philanthropic effort and social trust and between volunteering effort and social trust by using simultaneous equation model. This study also attempts to examine the socialization effect and intergenerational effect of philanthropy and volunteering in family, school, and community. This study found that both philanthropic effort and volunteering effort have a bilateral relationship with social trust. The bilateral relationship between giving and volunteering and social trust suggests that not only can social trust affect the increase of giving and volunteering but giving and volunteering can also influence social trust. Thus, by strengthening trust and facilitating giving and volunteering, we can construct and promote culture of sharing in our society. On the other hand, in the analysis on individual's educational experience in giving and volunteering during school years and individual's family experience (parental practice) in giving and volunteering during school years, it was found that family experience was statistically significant on philanthropic effort and volunteering effort. The result suggests that considering the validity of intergenerational effect in giving and volunteering, it is strategically vital for our society to facilitate and promote family practice in giving and volunteering throughout diverse programs and social marketing. Although this study has a limitation due to the limitedness of the original data, it made a significant contribution to advancing knowledge on the relationship between giving and volunteering and social trust by using elaborate analysis methods. This study emphasizes the necessity of continuous research; more advanced and systematic study based on a more elaborate model and solid data such panel data should be continued for a better understanding of philanthropic and volunteering behavior that can be an important soil for the development of nonprofit human service organizations. Finally, based on the results of the study, this study discusses research directions and practical implications to deepen and broaden the culture of sharing in Korea.

• Korean Journal of Social Welfare
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• v.68 no.4
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• pp.53-74
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• 2016

In this study, to verify influence that economic situations of a household unit have on donation behavior, after economic situations of a household unit were measured with income and assets by type and income to assets, effect which each variable has on secular giving was verified. This study used 3-year panel data of a total of 4,938 households based on the fifth to seventh year data as investigation data from 2012 to 2014 among data of financial panel investigation of Korea Institute of Public Finance of National Survey of Tax and Benefit. As an analysis method, a random effect tobit model was used. At the analysis result, it appeared that as scales of financial assets, earned income, property income, and transfer income become larger, the amount of donation increased. Also, it was represented that rates of income to assets had negative influence on secular giving. In case of demographic variables, education levels of householders and sizes of houses had relation of a positive direction. In case of ages, it appeared that they had inverted U-type relation. This study has meanings in that understanding of donation behavior of a household unit can be increased and expanded more and also implications related to intervention strategies of a household unit to expand sharing culture can be extracted by verifying influence which economic factors of a household unit have on donation behavior based on panel data.

• Korean Journal of Social Welfare
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• v.37
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• pp.1-31
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• 1999

In Korea, little is known about unemployment duration and exit rate from unemployment. This paper empirically examines the duration of unemployment using data for the years 1996 and 1997 on unemployed individuals who are eligible for unemployment insurance benefits in Korea. A parametric survival model (log-normal model) is adopted to identify factors predicting transitions to reemployment. Factors that affect unemployment duration are sex, age, employment duration (year), prior salary, region, prior employment industry, cause of unemployment, officially determined unemployment benefit duration, degree of benefit exhaustion, and amount of benefits for early reemployment. However, education is not statistically significant In degree of benefit exhaustion, the exit rate from unemployment decreases as benefit exhaustion is approached. In amount of benefits for early reemployment, the exit rate from unemployment increases as amount of benefits increases. Hazards for reemployment gradually increase until 80 days after unemployment and gradually decrease in the following period. Thus, we find that distribution of hazards for reemployment has log-normal shapes between inverted U and inverted L This paper takes advantage of a unique analysis about unemployment duration and exit rate from unemployment in the Korean Unemployment Insurance system which functions as the most valuable social safely-net mechanism in the recent national economic crisis. Indeed, this paper provides a basic knowledge about realities of unemployed individuals in the Unemployment Insurance system and identifies research areas that require further study.

• Korean Journal of Social Welfare
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• v.67 no.4
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• pp.51-77
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• 2015

This study attempts to examine the relationship between human resource management & financial resource management and service quality in social service organizations in Korea. This study utilizes '2012 Central Government Social Welfare Facilities Evaluation (CGSWFE)' data and employs multiple regression method to examine research model. The key findings of this study are as follows: (1) after controlling extraneous variables (organizational characteristics), among human resource management related variables, performance appraisal, fringe benefits, supervision, formal grievance procedure, the percentage of employees with certified professional license, and salary have statistically significant relationships with service quality in a positive direction; (2) among financial resource management related variables, the percentage of additional governmental funding beyond basic government subsidies, accounting management, and transparent use and management of donations have statistically significant relationships with service quality in a positive direction; and (3) human resource management related variables are stronger than financial resource management related variables in explaining service quality. The findings imply that more systematic human resource management and financial resource management would be very important in strengthening service quality in social service organizations. This study provides new knowledge foundation regarding the effect of human resource management and financial resource management on service quality in social service organizations.

• Korean Journal of Ecology and Environment
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• v.38 no.2 s.112
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• pp.137-145
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• 2005

Traditional screening techniques have missed up to 99% of microbial resources existing in the nature. Strategies of direct cloning of environmental DNAs comprising tine genetic blueprints of entire microbial metagenomes provide vastly more genetic information than is contained in the culturable. Therefore, one way to screening the useful gene in a variety of environments is the construction of metagenomic DNA library. In this study, the water samples were collected from Daecheong Reservoir in the mid Korea, and analyzed by T-RFLP to examine the diversity of the microbial communities. The crude DNAs were extracted by SDS-based freezing-thawing method and then further purified using an $UltraClean^{TM}kit$ (MoBio, USA). The metagenomic libraries were constructed with the DNAs partially digested with EcoRI, BamHI, and SacII in Escherichia coli DH10B using the pBACe3.6 vector. About 14.0 Mb of metagenomic libraries were obtained with average inserts 13 ${\sim}$ 15 kb in size. The genes responsible for degradation of 1, 2-dichloroethane (1, 2-DCE) via hydrolytic dehalogenation were identified from the metagenomic libraries by colony hybridization. The 1, 2-dichloroethane dehalogenase gene (dhlA) was cloned and its nucleotide sequence was analyzed. The activity of the 1, 2-DCE dehalogenase was highly expressed to the substrate. These results indicated that the dhlA gene identified from the metagenomes derived from Deacheong Reservoir might be useful to develop a potent strain for degradation of 1, 2-DCE.

• Korean Journal of Social Welfare
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• v.35
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• pp.1-30
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• 1998

The primary objectives of this research is to identify (1) demographic and behavioral characteristics of donors for social welfare organizations in Korea and (2) factors that predicts the degrees of donors' philanthropic effort measured by the fraction of personal income given to these organizations. This study uses the data based on the responses of 191 participants among 500 donors selected randomly from the donor population of 5 major social welfare organizations. In the demographic aspect, this study showed that donors have higher frequencies in college education, Christianity, married status, age of 30s & 40s, and middle class. In the behavioral aspect, this study showed that donors have higher frequencies in inner motivation for philanthropic participation ("joy of giving"), satisfaction about the activities of social welfare organizations, trust toward funds administration of social welfare organizations, and active participation ("solicitation to others") about donation. This study also showed that donor's duration is distributed around 3 years (median) and donors' donation amount is distributed around 20,000 Won (median). This study found that the median value of donors' philanthropic effort is 1.2 percent and the distribution of philanthropic effort by income has the U shape. Finally, using polynomial regression analysis, this study found that the first power and second power of donor's income, age, continuation motivation of donation, and degree of active participation are statistically significant in predicting the degree of donors' philanthropic effort. This study will contribute to expanding knowledge about donors' characteristics and provide a practical implication for financial resource mobilization strategies in nonprofit nongovernmental sector.

• Korean Journal of Social Welfare
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• v.52
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• pp.5-32
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• 2003

This paper examines the labor entry of conditional welfare recipients. This paper focuses on two questions. First, what is the percentage of conditional welfare recipients who have labor entry? Second, what are the predictors in the labor entry and the duration to the entry? Using Data about 917 welfare recipients who participated in the self-sufficiency programs of the Offices for Secure Employment in Seoul, this paper attempts to answer the above questions. Logistic regression analysis and survival analysis are adopted to identify variables predicting labor entry of conditional welfare recipients. This paper also utilizes a multiple imputation method to deal with the limitation of data by the missing values in some variables. The major findings are as follows: about 43.8% of the conditional welfare recipients have successful labor entry; and in the labor entry and the duration to the entry, gender, household, information and referral services for employment, health and willingness for self-sufficiency are the predictors that are statistically significant. Among these variables, health and willingness for self-sufficiency are more noticeable; it is recognized that programs to care for health of welfare recipients who want to have the labor entry and counseling programs to strengthen welfare recipients' willingness for labor entry are very important for them to be successful in the labor entry. This paper provides a basic knowledge about realities of the conditional welfare recipients' labor entry, identifies research areas for further research, and develops policy implications for their self-sufficiency.

• Korean Journal of Social Welfare
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• v.53
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• pp.257-283
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• 2003

The main objective of this study is to examine antecedents and outcome of organizational cynicism. This paper focuses on organizational commitment of social worker as outcome variable. Thus, this study attempts to examine structural relation of variables of organizational level(personnel management), job level(job characteristics), and individual level(level of self-control) on the level of organizational commitment, with special concern about the mediating effect of organizational cynicism. The study conducted mail survey and collected information for data analysis from 330 social workers working at 173 social welfare organizations in Seoul and Kyong-gi area, The study used structural equation modeling(SEM) method for analyzing the constructed model. Main results are as follows: (1) evaluation about personnel management is negatively related to organizational cynicism; (2) evaluation about job characteristics is negatively related to organizational cynicism; (3) evaluation about self-control is negatively related to organizational cynicism; (4) organizational cynicism exerts negative effect on the level of organizational commitment; and (5) evaluation about personnel management, evaluation about job characteristics, and evaluation about self-control exerts positive effect on the level of organizational commitment. Among the results of this study, this paper focuses on the function of personnel management system on organizational cynicism. This paper emphasizes that social welfare organizations must make a lot of efforts for making fair personnel system in order to reduce social workers' organizational cynicism and ultimately promote their organizational commitment.

• Korean Journal of Social Welfare
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• v.59 no.1
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• pp.171-197
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• 2007

This study attempts to explore and describe the public's image on social welfare professionals in the comparison with other helping professionals. Using a sample (n=1,156) collected from high school students, college students, and citizens, this study comparatively examines the public's image on five helping professionals such as social welfare professionals, psychiatrists, clinical psychologists, nurses, and pastoral counselors. In measuring the public's image, this study uses a semantic differential scale that is composed of 16 pairs of adjective words. In overall, among five helping professionals, social welfare professionals is the most positively recognized; thus, its total score is the highest. By using correspondence analysis, social welfare professionals belong to the second quadrant that includes "practical" and "comfortable". As have discussed in the previous research, however, the analysis reveals that social welfare professionals' expertise is not highly evaluated. On the other hand, ANOVA shows that unlike statistically significant differences between social welfare professionals and other helping professionals, there is no statistically significant difference between social welfare professionals and clinical psychologists. Finally, MANOVA shows that except for gender social demographic variables do not make any differences in the public's image on social welfare professionals. In conclusion, this study discusses diverse directions and measures to strengthen social welfare professionals' competencies including expertise and promote the public's image social welfare professionals.