• 융합보안논문지
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• 제18권2호
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• pp.77-88
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• 2018

본 연구의 목적은 기상조절기술의 군사적 활용방안을 연구하고, 한반도 환경 및 기술수준 등을 고려하여 연구의 우선순위를 과학적인 기법으로 도출하는데 있다. 이를 위해 각 기술들을 군사적으로 이용할 경우 장점과 단점을 살펴보고, 전문가 집단을 구성하여 델파이 기법을 통해 우선순위 평가를 위한 지표를 도출하였으며, 분석적계층분석 기법을 통해 평가지표의 가중치와 각 평가지표 내에서의 기술들의 가중치를 유도하여 최종적인 연구 우선순위를 정하였다. 분석결과 전리층 변조 기술이 무기체계로서의 효과성과 한반도 환경에서의 적합성 측면에서 가장 큰 우선순위가 있는 것으로 나타났다. 현재 북한의 전자전 및 미사일 위협 등을 고려할 때 전리층 변조 기술은 기상전의 일부로써 우선적인 확보가 필요하며, 통일 이후의 잠재적 주변국 위협에 대응하기 위해서는 전리층 변조뿐만 아니라 군사 과학기술 선진국들과의 기술적 격차가 있는 인공강우(설), 낙뢰유도, 안개 소산 기술도 민간기술의 적극적인 활용(Spin-On)을 통해 기반을 구축해야 할 시기이다.

• 한국병원경영학회지
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• 제25권4호
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• pp.1-12
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• 2020

During the COVID-19 pandemic, most of the western countries with advanced medical technology failed to contain coronavirus. This fact triggered our research question of what factors influence the clinical outcomes like infection rates and case mortality rates. This study aims to identify the determinants of COVID-19 related infection rates and case mortality rates. We considered three sets of independent variables: 1) socio-demographic characteristics; 2) cultural characteristics; 3) healthcare system characteristics. For the analysis, we created an international dataset from diverse sources like World Bank, Worldometers, Hofstede Insight, GHS index etc. The COVID-19 related statistics were retrieved from Aug. 1. Total cases are from 95 countries. We used hierarchical regression method to examine the linear relationship among variables. We found that obesity, uncertainty avoidance, hospital beds per 1,000 made a significant influence on the standardized COVID-19 infection rates. The countries with higher BMI score or higher uncertainty avoidance showed higher infection rates. The standardized COVID-19 infection rates were inversely related to hospital beds per 1,000. In the analysis on the standardized COVID-19 case mortality rates, we found that two cultural characteristics(e.g., individualism, uncertainty avoidance) showed statistically significant influence on the case mortality rates. The healthcare system characteristics did not show any statistically significant relationship with the case mortality rates. The cultural characteristics turn out to be significant factors influencing the clinical outcomes during COVID-19 pandemic. The results imply that the persuasive communication is important to trigger the public commitment to follow preventive measures. The strategy to keep the hospital surge capacity needs to be developed.

• 치위생과학회지
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• 제22권2호
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• pp.67-74
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• 2022

Background: Depression and cognitive function have a positive effect on the improvement of quality of life and extension of lifespan in the elderly. In addition, it appears as a major factor influencing oral health status. Therefore, this study looked at the relationship between the Geriatric Oral Health Assessment Index (GOHAI), depression, and cognitive function in the elderly using the Korea Longitudinal Study of Aging. Methods: In this study, 4,535 elderly people aged 65 years and over were targeted using the 7th data of the 2018 Korea Longitudinal Study of Aging. A t-test and ANOVA analysis were performed to compare GOHAI, depression, and cognitive function by group. In addition, hierarchical multiple linear regression was performed to understand the effect of the elderly's perceived depression scale and cognitive ability on GOHAI. Results: As a result of adding the depression scale and cognitive function variables to Model 2, the explanatory power was 22%. Educational level, marital status, private health insurance subscription, average monthly allowance, subjective health status, use of dentures, smoking status, economic activity, depression scale, and cognitive function were found to have significant influence (p<0.05). In addition, when controlled and viewed with all factors, depression and cognitive function were found to have an effect on oral health-related quality of life. Conclusion: The findings indicate that depression and cognitive function are associated with oral health-related quality of life in the Korean elderly. As the age increases, the quality of life declines due to depression and cognitive function problems, in addition to oral discomfort, eating disorders, and physical discomfort.

• 한국산학기술학회논문지
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• 제18권2호
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• pp.158-167
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• 2017

본 논문에서는 국방 R&D기술 평가에 적용 가능한 기술등급평가 방법론을 제시하였다. 국방 R&D기술 등급평가를 위해서 첫째, 다중회귀분석을 활용한 기술료수입 예측 모델을 설계하여 기술수익지수가 도출되도록 하였다. 모델을 통해 예측된 기술료수입이 커질수록 기술수익지수도 커진다. 둘째, 계층분석방법을 이용하여 기술에 대한 전문가 의견을 다각적으로 반영하는 기술력평가지수가 산출되도록 하였다. 기술력평가지수 평가항목 개발을 위해 델파이기법을 사용하여 전문가 의견을 종합하였고, 요인분석 및 AHP를 사용하여 평가항목을 구조화하였다. 마지막으로 기술수익지수와 기술력평가지수의 가중평균의 크기에 따라 적절한 기술 등급이 도출되도록 하였다. 각 지수별 가중치는 전문가 의견을 종합하여 설정하였다. 본 연구를 통해 개발된 국방 R&D기술 등급평가 방법론은 국방기술을 등급으로 평가가능하게 한 최초의 방법론이다. 다른 분야와 마찬가지로 국방 분야에서도 기술의 연구개발 초기단계에는 불확실성이 크기 때문에 화폐단위로 표시되는 가치평가결과의 정확성이 매우 떨어진다. 따라서 특히 실무적인 관점에서 볼 때 R&D기술 부문에서는 기술등급평가 기법이 긴요할 것으로 판단된다. 본 방법론을 실무에 적용하게 되면, 국방 연구개발 관련 정책담당자에게 과학적이고 정량적인 기술의 가치 판단 기준을 제공하여 효율적인 R&D예산 배분에 기여할 수 있으며, 국방 R&D분야의 기술이전 활성화 업무에도 활용할 수 있을 것이라 판단된다.

• 한국도서관정보학회지
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• 제35권4호
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• pp.451-467
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• 2004

본 연구에서는 시소러스 브라우저를 자동으로 구성하기 위한 방법에 대한 이론적인 연구와 함께 시소러스 브라우저 구성과정의 핵심인 자동색인과 용어 간 계층을 자동으로 형성하는 클러스터링 알고리즘에 대한 선행 연구결과를 제시하였다. 그리고 웹 문헌에서 전통적인 종이 형태 문헌의 서지사항에 해당하는 메타데이터를 분석하고 이를 처리하는 방안을 조사함에 의해 웹 문헌에서 색인어를 자동으로 추출할 수 있는 방안에 대하여 연구하였다. 또한 대부분의 웹 문헌에 메타데이터가 수록되어 있지 않음에 착안하여 기존의 웹 문헌에 메타데이터 자동 편집기를 이용하여 메타데이터를 수록하는 방안에 대한 연구결과를 제시하였다.

• 지역사회간호학회지
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• 제18권2호
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• pp.232-241
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• 2007

Purpose: The aim of this study was to explore the health-related quality of life of caregivers for demented elders. Method: The subjects of this study were 170 pairs of demented elders and their caregivers. Socio-demographic characteristics of the demented elders and the caregivers, Barthel index and SF-36 were used in this study. Data analysis procedure included t-test, ANOVA, Pearson correlation coefficient, and hierarchical multiple regression. Results: The score of overall health-related quality of life (HRQoL) was 288.62 in norm-based scoring. The major factors that affect HRQoL of the demented elders' caregivers were burden, the age of the caregiver, ADL and gender of the demented elder, and these factors explained 34.5% of HRQoL. Conclusion: The factors significantly affecting the caregivers' HRQoL were burden, the age of the caregiver and ADL. The effective social support system should be considered in respective nursing interventions to decrease the level of burden and to increase HRQoL in demented elders' caregivers. Further studies and efforts will be needed to investigate preceding factors of burden and HRQoL.

• Parasites, Hosts and Diseases
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• 제56권2호
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• pp.175-181
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• 2018

The giant roundworm Ascaris infects pigs and people worldwide and causes serious diseases. The taxonomic relationship between Ascaris suum and Ascaris lumbricoides is still unclear. The purpose of the present study was to investigate the genetic diversity and population genetic structure of 258 Ascaris specimens from humans and pigs from 6 sympatric regions in Ascaris-endemic regions of China using existing simple sequence repeat data. The microsatellite markers showed a high level of allelic richness and genetic diversity in the samples. Each of the populations demonstrated excess homozygosity (Ho0). According to a genetic differentiation index (Fst=0.0593), there was a high-level of gene flow in the Ascaris populations. A hierarchical analysis on molecular variance revealed remarkably high levels of variation within the populations. Moreover, a population structure analysis indicated that Ascaris populations fell into 3 main genetic clusters, interpreted as A. suum, A. lumbricoides, and a hybrid of the species. We speculated that humans can be infected with A. lumbricoides, A. suum, and the hybrid, but pigs were mainly infected with A. suum. This study provided new information on the genetic diversity and population structure of Ascaris from human and pigs in China, which can be used for designing Ascaris control strategies. It can also be beneficial to understand the introgression of host affiliation.

• 한국콘텐츠학회논문지
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• 제8권1호
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• pp.169-176
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• 2008

본 논문에서는 접속 (connection)과 패킷의 두 레벨 (level)을 함께 고려하는 IEEE 802.16 망에서의 무선 자원 관리 큐잉 모델을 개발한다. 상위 레벨인 접속 레벨에서는 대역폭 가용여부와 서비스 클래스별 우선순위 큐를 사용하여 접속 수락제어를 모델링하고 하위 레벨인 패킷 전송은 서비스 클래스별 임계치와 현재 가용한 대역폭의 두 항목을 동시에 고려한 동적 대역폭 할당 방법을 모델링 한다. 계층 모델은 페트리 네트의 확장형인 SRN (Stochastic Reward Nets)을 이용하여 개발되며 802.16서비스 클래스별 트래픽에 대한 대역폭 활용률과 처리율을 성능지표로 모델에 대한 수치결과를 구한다.

• Journal of Korean Biological Nursing Science
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• 제17권4호
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• pp.287-296
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• 2015

Purpose: The purpose of this study was to identify the influence of physical activity and depression on sleep quality among the young-old and old-old community-dwelling elderly. Methods: Participants were 216 community-dwelling older adults in Korea aged 65 or above. Data were collected using structured questionnaires with face-to-face interviews that included demographic and health-related characteristics, International Physical Activity Questionnaires (IPAQ), the Short Form Geriatric Depression Scale (SGDS) and the Pittsburgh Sleep Quality Index (PSQI). A hierarchical multiple regression was conducted to examine whether physical activity and depression would predict sleep quality under other controlled factors. Results: There were differences in demographic and health-related characteristics, physical activity, and depression by age groups, but not in sleep quality. In the young-old elderly, physical activity (${\beta}=-0.22$, p=.043) and depression (${\beta}=0.31$, p=.002) were significantly associated with sleep quality (F=4.46, p=.001, Adjusted $R^2=.16$). In the old-old elderly, physical activity (${\beta}=-0.29$, p=.001) and depression (${\beta}=0.41$, p<.001) were significantly associated with sleep quality (F=10.79, p<.001, Adjusted $R^2=.29$). Conclusion: These finding highlight physical activity and depression as important contributors to sleep quality in both young-old and old-old elderly.

• 가정과삶의질연구
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• 제24권2호
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• pp.165-175
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• 2006

The purpose of this study was to examine the effects of ego?identity and rare teacher's emotional support on the value of sexuality of institutionalized adolescents. The subjects were 102 middle school adolescents in Daegu and Cyeongsangbuk Province, Korea. Ego-identity of the institutional youth, perceived emotional support of care teacher and sexual values reported by the institutionalized adolescents. The data were analyzed with an AMOS 5.5 Program by comparative fit index and a SPSS Win program 12.0 using cronbach's $\alpha$, simple regression, hierarchical multiple regression and path analysis. The findings showed that both the degree of ego-identity and perceived emotional support of care teacher exerted a significant effect on the sexual values of institutional youth. Furthermore, it is important to note that the care teacher's emotional support influenced sexual values of the youth, and was mediated by the ego-identity of the institutional youth.