• Korean Journal of Social Welfare Studies
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• v.47 no.1
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• pp.261-290
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• 2016

The purpose of this study was to examine how previous grandmaternal child care affects contacts between older mothers and their adult children. This study especially focused on intergenerational long-term reciprocity relationships. In this study, data from the first wave (in 2006) to the forth wave (in 2012) of Korean Longitudinal Study of Ageing yielded a sample of 1,925 elderly mothers and 7,460 adult children. This study employed multi-level analyses considering hierarchical structures between the mothers and their adult children. In this study, past grandmaternal child care was measured by providing care behavior and unit of time for care. Intergenerational contacts was measured by frequency of face-to-face and non-face-to-face contacts. The results showed that adult children who previously received child care from their mothers were more likely to contact to their mothers. Additionally, the increasing amount of time for elderly mothers to provide care to their grandchildren led to more frequent contacts between elderly mothers and their adult children. The findings proved that grandmaternal child care was in important position in reciprocal relationships between elderly mothers and their adult children. Through these results, this study suggested theoretical, policy, and practical implications.

• The Journal of the Korea Contents Association
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• v.21 no.8
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• pp.150-162
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• 2021

Companies have recently become increasingly interested in corporate entrepreneurship to establish a core employment policy in order to secure and maintain core employees and to foster an innovation-oriented organizational culture. Therefore, The purpose of this study is to empirically analyze the causal relationship between core employment policies and the team leader's the perceived internal process organizational competency and job satisfaction, and to investigate whether corporate entrepreneurship has a moderation effect. Non-financial service industries including ICT companies were subject of the study and human capital corporate panel(HCCP) was utilized. The samples were 367 team leaders from 79 domestic companies. This study also applied Multi-Level Analysis(HLM), which simultaneously analyzes variables at both the individual level and the organizational level in order to improve the accuracy of the study. According to the result of the study analysis, core employment policies have a positive(+) impact on the perceived internal process organizational competency and job satisfaction. In addition, the moderation effect of corporate entrepreneurship was verified during the process when core employment policies influence the two outcome variables. corporate entrepreneurship was found to have a moderation effect that strengthens the influence on job satisfaction, but the moderation effect on the perceived internal process organizational competency was not statistically significant. These results confirm that organizational cultural factors such as corporate entrepreneurship are important influence variables in the process of influencing individual-level variables such as core employment policies. Academically, It suggests that in order to enhance the effectiveness of company strategies in respect of human resource management such as core employment policies, it is important to foster a cultural environment that suits the industry and characteristics of the organization. In addition, it suggested that companies in need of new innovation need to utilize corporate entrepreneurship.

• Journal of the Earthquake Engineering Society of Korea
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• v.5 no.3
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• pp.29-36
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• 2001

Same as-built drawings in national roadway bridges in Korea were examined. As a result, many bridge piers were found whose aspect ratios are in the vicinity of 2.5. These columns are expected to do shear-flexure behaviour, but the previous research works considered flexure behaviour columns only. In the study, therefore, a shear-flexure behaviour column was selected as the model pier, and quasi static test on the full and 1/2 scale models was carried out. From the test results, the scale effect on the seismic performance evaluation was analyzed, and the seismic performance of the model bridge pier without seismic details was evaluated by the capacity spectrum method.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10b
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• pp.442-447
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• 2006

디지털 카메라의 대중화와 고용량 저장매체의 보편화로 인해 대중들은 손쉽게 디지털 사진 촬영이 가능하게 되었다. 디지털 사진은 필름 사진과 달리 촬영을 하는데 있어 비용이 들지 않을 뿐만 아니라 플래쉬 메모리의 증가로 인해 다수의 사진들을 촬영할 수 있게 되었으나 그만큼 많은 사진들을 관리하고 분류하는 것은 쉽지 않은 일이 되었다. 따라서 디지털 사진을 자동으로 분류하고 관리하는 기능은 중요한 과제가 되었지만, 현재까지 나온 방법들은 사진 내의 객체가 확대, 축소 및 이동하거나 배경이 바뀌는 영상에 있어서 정확한 유사도를 측정하여 분류하는데 어려움이 있었다. 본 논문에서는 이와 같은 어려움을 보완한 디지털 사진의 클러스터링 알고리즘을 제안한다. 입력영상을 그리드 형태로 나누어 각 블록별로 측정한 유사도 값을 바탕으로 클러스터링하며, 이때 디지털 사진 내에 포함되어 있는 촬영정보인 EXIF를 이용하여 입력 영상에 따라 적응적(adaptive)으로 그리드를 나누어 비교한다. 또한, 영상에 따라 각기 다른 색상의 분포 정도를 고려해 색상 가중치를 고려하여 사진을 비교함으로써, 영상의 고수준(high-level) 분석에서처럼 객체와 배경을 추출하여 따로 분리하지 않고도 객체의 배경이 다른 사진들을 저수준(low-level) 에서 분석이 가능토록 하였다. 제안한 방법으로 실험한 결과 객체의 크기 및 이동이나 배경에 큰 영향을 받지 않으면서 입력영상들을 클러스터링 할 수 있었다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.203-215
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• 2019

This study was conducted to identify the utilization of public health centers, as well as the individual characteristics and regional characteristics that affect their utilization based on data from the 2016 Community Health Survey, National Statistical Portal, and National Institute of Environmental Research. Independent samples t-tests, variance analysis, and multiple logistic regression analysis were used for analysis. Hierarchical multiple regression was used to analyze individual and regional characteristics. The results of hierarchical multiple regressions revealed that aged regions, women, older age individuals, respondents with lower education level and income level, walking practitioners, nutrition label readers, individuals experiencing depression, those who have received health checkups, those who are not covered by essential care, those who have spouses, and basic livelihood beneficiaries have increased use of public health centers. However, the use of public health centers decreased in stressors, and regions in which the population per 1,000, number of health care workers, health and welfare budget, fiscal independence, and unemployment rate were above the national average. As above, the central government and local governments need to analyze not only individual characteristics such as health behavior and psychological factors, but also regional characteristics, when establishing local health care policy.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.9
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• pp.2055-2062
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• 2013

Digital evidence which is the new form of evidence to crime makes little difference in value and function with existing evidences. As time goes on, digital evidence will be the important part of the collection and the admissibility of evidence. Usually a digital forensic investigator has to spend a lot of time in order to find clues related to the investigation among the huge amount of data extracted from one or more potential containers of evidence such as computer systems, storage media and devices. Therefore, these evidences need to be ranked and prioritized based on the importance of potential relevant evidence to decrease the investigate time. In this paper we propose a methodology which prioritizes order in which evidences are to be examined in order to help in selecting the right evidence for investigation. The proposed scheme is based on Fuzzy Multi-Criteria Decision Making, in which uncertain parameters such as evidence investigation duration, value of evidence and relation between evidence, and relation between the case and time are used in the decision process using the aggregation function in fuzzy set theory.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.7
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• pp.3237-3243
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• 2012

The purpose of this study is to analyze city's built environment that have influence on residents' health in the 40 small and medium-sized cities. In the study, landuse, urban form and facility accessibility of cities and other socio-demographic variables were used as explanatory variables, and a statistical analysis was carried out by applying multi-level analysis. Analysis shows that a high level of population density lower the obesity, and a high level of landuse-mix have a positive effect on EQ-5D & hypertension. In terms of urban form and facility accessibility, residents show a high level of obesity in an environment where roads are closely connected and access to bus service is bad. Finally, as more access to open space have a positive effect on EQ-5D. Therefore, landuse-mix, access to public transportation and open space should be used for planning factors to make a health improvement plan in cities.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.8
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• pp.4019-4027
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• 2013

The purpose of this study is to analyze neighborhood environment that have influence on residents' subjective health in Changwon. In the study, neighborhood's socio-economic environment, landuse, bicycle use environment and other personal socio-demographic variables were used as explanatory variables, and a statistical analysis was carried out by applying multi-level analysis. Analysis shows that a high level of business density lowers the residents' health, and a high level of quality of bicycle facilities, safety of bicycle use and accessibility to main facilities have a positive effect on residents' health. Therefore, bicycle-friendly neighborhood will improve the residents' health, quality of bicycle facilities, safety of bicycle use and accessibility to main facilities should be used for planning factors to make a healthy neighborhood.

• Electronics and Telecommunications Trends
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• v.29 no.1
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• pp.83-92
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• 2014

다양한 장르 및 형태를 가진 온라인게임이 여가활동의 하나로 자리를 잡으면서 온라인게임 시장이 성장하고 있다. 이를 틈 타 온라인게임 내에서 허가되지 않은 형태의 프로그램을 운용하면서 정당한 플레이어에게 피해를 입히고 나아가 게임사에 막대한 손실을 입히는 오토/봇 프로그램 사용자가 등장하였다. 오토/봇 프로그램은 그 형태가 다양하고 사용자 역시 국내뿐 아니라 해외에도 다수 존재하다 보니 추적이 쉽지 않다. 또한, 온라인게임과 최근 각광받고 있는 스마트 기기용 게임 사용자가 늘면서 로그의 양이 폭발적으로 증가하고 있으며 로그정보로부터 봇에 대한 정보뿐 아니라 게임 운영계획에 필요한 통계정보에 대한 분석 요구가 커지고 있다. 본고에서는 온라인게임에서의 봇/오토 프로그램과 이에 대한 탐지기법 및 로그관리 기술동향에 대해서 살펴본다.

• Proceedings of the Korean Reliability Society Conference
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• 2001.06a
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• pp.489-496
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• 2001

컴퓨터 키보드의 시장 불량품을 분석한 결과 여러 키가 동시에 입력되는 현상이 다수 발생되는 것을 알 수 있었다. 정밀분석결과 이의 원인이 키보드 membrane의 패턴을 구성하는 은(Ag) paste의 ion migration발생에 의한 것임을 알 수 있었다. 재현실험을 통해 고온 고습한 환경에서 장시간 사용하다보면 membrane내부로 수분이 침투하여 패턴간에 Ag ion migration이 발생되어 키 동작 오류를 유발시킴을 알 수 있었다. 이에 대한 대책안으로 제조 원가에 크게 영향을 주지 않으면서 migration을 크게 억제할 수 있는 준방수 방식의 membrane을 채택하여 4$0^{\circ}C$, 90%RH 환경에서 최소 5년을 보증할 수 있는 키보드를 제작하였다. 또한, 키보드 membrane의 ion migration 시험시 정상사용 조건을 가속시킬 수 있는 재현 및 검증시험법(85$^{\circ}C$, 85%RH, 가속계수 17배)을 개발하였다.