• Journal of the Korean Society for Library and Information Science
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• v.50 no.1
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• pp.71-99
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• 2016

This study investigated users' information seeking behaviors associated with their perceptions of uncertainty. For this study, the data was collected from an user group, who conducted information searches in the field of history, using the KERIS Edunet system and it was analyzed through the comparative analysis of the grounded theory. The results presented users' uncertainty in the following stages: the identification of information needs, the selection of an information system, the selection of search terms, the actual use of the system, and the evaluation of search results. Major implications pertain to the enhancement of the Edunet system and related services. The former includes the improvement of the retrieval mechanisms related to the search and display interfaces. The latter emphasizes the consideration of the origin of uncertainty in the process of the services. In other words, the study suggested to consider the inadequacy of the system functions, the insufficiency of search experiences and the lack of such abilities of particular users.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.4
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• pp.975-985
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• 2018

ICN architecture, one of future Internet technologies, proposes that content request packets toward a content source can be responded by several distributed nodes. So, ICN can solve network congestion which is happened around content sources and provide a seamless content distribution service regardless of the network and system statuses of content sources. Especially, CCN implements content caching functionality in network nodes so that such intermediated network nodes can themselves respond to content requests. However, when receiving content from distributed nodes, users receiving content cannot authenticate the nodes providing the content. So CCN is vulnerable to various attacks such as an impersonation attack, a data pollution attack, and so on. This paper first describes CCN content authentication and its weakness. Then it proposes an improved content authentication scheme based on a blockchain and evaluates the performance of the proposed scheme.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.5 no.5
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• pp.1-10
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• 2002

우리나라의 기후변화연구에서 삼림생태계의 영향과 적응은 가장 중요한 관심사중 하나이다. 지리적 위치와 통일문제 등을 고려할 때, 한반도는 역동적인 개발이 이루어질 지역이며 인구와 경제적 상황의 변화로 삼림 생태계에 급격한 변화가 예상된다. 기후변화의 영향은 이러한 상황을 더욱 복잡하게 만들게 될 것이다. 본 연구에서는 이런 영향을 평가하기 위해, IS92a 시나리오의 GCMs(General Circulation Models)결과들을 이용하여 가능한 기온 증가 범위내에서 삼림생태계의 변화를 예측하였다. 변화를 추정하기 위해 AIM/Impact[Korea](the Asian-Pacific Integrated Model) 모형을 이용하여 시기별 Holdridge 생물기후대를 예측하고 목본식물의 이동속도를 고려한 지역삼림의 영향 및 적응 패턴을 분석하여 생태계 변화로 인한 경제적 가치 손실액을 추정하였다. 분석 결과는 다음과 같이 요약된다. 1) 목본식물의 추정 평균이동속도 0.25km/년의 경우, 한반도에서 삼림소실지역은 발생하지 않는 것으로 예측되었다. 그러나 인위적 개입이 없는 경우 고사의 위험이 높은 지역은 남한의 경우 남한 총면적의 14%를 차지하였고, 북한은 18%정도의 면적이 고사 위험이 있는 것으로 나타났다. 남한 고사위험지역의 80%는 난온대림 지역으로 주로 남해일원과 전라도 서해안에서 발생하며, 북한은 고사위험지역의 대부분이 냉온대림지역으로 주로 평안도 내륙지역과 중국 접경지경, 함경남도의 영흥만 북부에서 나타났다. 2) 목본식물의 이동속도 변화에 따라 남한은 매년 0~976백만불, 북한은 0~2,492백만불 범위의 경제적 가치손실이 발생하는 것으로 예측되었다. 또한 목본식물의 추정 평균이동속도가 0.25km/년일 경우, 한반도 전체의 가치손실액은 매년 3,471백만불에 달했으며, 남한의 경우 목본식물의 이동속도가 0.5km/년 이상인 경우 삼림의 경제적 가치 손실은 발생하지 않았다.

• Journal of Korean Home Economics Education Association
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• v.29 no.3
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• pp.1-14
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• 2017

The purpose of this study was to investigate the relationship between parental psychological control and adolescent school adjustment mediated by hope of adolescents. Four hundred three middle and high school students participated in this study. The data were analyzed using descriptive statistics, t-tests, Pearson's correlations, structural equation modeling(SEM), and multi group analysis. The average level of school adjustment was significantly higher in male adolescent group compared to female adolescent group. Adolescents' hope partially mediated the relationship between parental psychological control and adolescents' school adjustment. The proposed model was not significantly different as a function of gender. These results suggest that adolescents' school adjustment could be improved by reducing levels of parental psychological control and enhancing adolescents' hope.

• Korean Journal of Family Social Work
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• no.58
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• pp.123-150
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• 2017

The purpose of this study is to examine the mediated moderating effect of resilience in the relationships among job stress, work-family conflict, and depression of female low-wage workers. For this purpose, a total of 190 female workers with monthly wage of less than two million won were analyzed. The results showed that the mediated effect of work-family conflict in the relationships between job stress and depression, and the mediated moderating effect of resilience. Thus, policy makers and practitioners should develop mental health program alleviating job stress and depression among female low-wage workers, enhance family-friendly policy and program necessary for work family balance, furthermore, develop occupational welfare program to promote resilience.

• Korean Journal of Social Welfare Studies
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• v.45 no.2
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• pp.375-402
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• 2014

The purpose of this study is to investigate the longitudinal change pattern of life satisfaction and the effect of social capital of people with disabilities. For this study, data were drawn from the panel data employment for the disabled from the second to the fifth. It includes 3,206 person with disabilities. The methodology adopted in this study is the latent growth curve modeling. The findings of this study are as follows: First, Life satisfaction has been decreased over years and the difference between individuals of life satisfaction of people with disabilities were statistically significant. Second, The intercept of life satisfaction in the disabled was positively associated with network, and slope of life satisfaction was negatively related to network. Third, social participation positively influences the intercept of life satisfaction but, no significant affect to the slope. Based on results of the study, practical implication and the political-approach to interventions for the better life satisfaction of the disabled are being discussed.

• Journal of the Korean Society of Child Welfare
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• no.59
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• pp.59-86
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• 2017

The purpose of this study was to investigate the effects of childhood obesity on school adjustment and whether the effects were mediated by withdrawal. Using the 2015 Korea Welfare Panel Study data, this study conducted a hierarchical regression analysis to examine the mediating effects of withdrawal on the relationship between childhood obesity and school adjustment. In addition, a Sobel test was used to consider the statistical significance of the mediating effects. Findings were as follows: First, childhood obesity had a negative influence on school adjustment. Second, childhood obesity affected withdrawal positively. Third. withdrawal had a negative impact on school adjustment. Fourth, withdrawal was found to partially mediate the relationship between childhood obesity and school adjustment. Based on the results, implications were discussed to intervene in preventing childhood obesity and to reduce the negative effects of childhood obesity.

• Korean Journal of Social Welfare Studies
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• v.48 no.4
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• pp.121-156
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• 2017

The purpose of this study is to examine the recovering gambling addicts' overcoming process on their hardships of life which hamper their recovery. For this study, we had one to one depth interview with 10 participants who had overcome their hardships of life after stopping gambling. The data gathered from the interviews were analysed following the grounded theory process suggested by Strauss and Corbin. As a result, 131 concepts were constructed, and they were classified into 32 subcategories and 14 category. We presented "overcoming of the hardships of life through the acceptance of reality and re-determination" as a core subject which connects the whole concepts. Based on the research outcomes, we proposed some policy and practice intervention methods such as economic self-support program, social security service, and triangle support system by counselor-family-peer recovering addicts.

• Korean Journal of Social Welfare Studies
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• no.36
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• pp.227-252
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• 2008

This study investigated the relation between social worker's beliefs on the nature of scientific knowledge which has been classified objectivism and constructivism and social work practice. As an epistemological position, constructivism is based on a view of knowledge that differs from that of objectivism, which holds that knowledge exists "out there" as objective truth. The focus of this paper is a examination on epistemological beliefs of social worker and social work practice. This paper proves that social work's epistemological beliefs have an effect on the practice modes. This research indicates that social works have a higher constructivist veiws than objectivist veiws on the nature of scientific knowledge. And social worker who have a high level of objectivism show a positive determinative mode. It has suggested that the constructive theory offers useful epistemology to the social worker who should deal with the clients in uncertain situations. In conclusion, a social worker with a high level of constructivism use an approach that creats a more equitable relationship between social worker and client. This perspective will allows cliens to participate in the formulation of theories in practice.

• Journal of the Korean Society of Child Welfare
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• no.60
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• pp.1-24
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• 2017

This study aimed to examine whether neglect influences sense of community and whether such a relationship is moderated by peer attachment. For this purpose, this study employed multi variate regression analyses using the sixth-panel data (2015) of fourth-grade elementary-school children from the Korean Children and Youth Panel Survey. Key findings were as follows: First, neglect was found to have negative impacts on sense of community. In addition, we found that peer attachment moderated the relationship between neglect and sense of community. This finding suggests that peer relationship and attachment protects some portion of negative impacts of neglect on sense of community. This study concludes with policy and practice implications to improve the well-being of adolescents.