• 한국통신학회논문지
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• 제40권12호
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• pp.2392-2400
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• 2015

무선 저전력 통신과 매쉬 네트워크 기술로 대표되는 Zigbee 표준 기술은 스마트 홈과 스마트 빌딩, 대규모 센서 네트워크 등의 환경에서 Ad hoc 방식에 의하여 통신거리 확장을 목표로 개발되어왔다. 또한 Zigbee 표준 기술은 기본적으로 IEEE 802.15.4 표준 기술을 기반으로 개발되었으며, 네트워크를 구성하는 전체 노드는 IEEE에서 정의하는 48bit의 Unique한 노드 주소를 사용하여 매쉬 통신을 구성한다. 하지만 스마트 라이팅이나 넓은 지역의 센서 네트워크와 같이 광범위한 지역을 대상으로 동작하는 Zigbee 환경에서는 매우 많은 수의 노드가 필요하고 경우에 따라 설치를 담당하는 시공사가 다를 수 있으며, 이 경우 많은 수의 노드에 대하여 Unique한 노드 ID를 제공하기 힘들 수 있다. 이러한 문제를 해결하기 위하여 본 고에서는 넓은 지역에 대규모로 설치되는 많은 노드들에 대하여 각각의 Personal Coordinator 들이 해쉬 기반으로 동적 PANID를 설정하고, 이에 따라 발생될 수 있는 PANID 충돌 문제를 해결하는 기법을 제안하며 이에 대한 성능을 검증한다.

• Human Ecology Research
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• 제52권4호
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• pp.371-382
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• 2014

This study investigated the relationships among individual factors, family factors, peer relationships and the internalizing and externalizing behaviors of adolescents. The data were obtained from a sample of 417 7th and 8th grade students. These data were collected with questionnaires and analyzed by using a t-test, Pearson's correlation, and a multiple regression analysis with SPSS ver. 18.0. The results can be summarized as follows. There is a significant difference in an adolescent's self-control, their father's rejective rearing, peer pressure, and the peer relationship between boys and girls. The results showed that boys had higher self-esteem and father's rejective rearing than girls. On the other hand, girls had higher peer pressure and more intimate peer relationships than boys. The results revealed that the 7th grade students had higher self-esteem and mother's warmth rearing than the 8th graders. Furthermore, the 8th grade students showed higher shame, mother's rejective rearing, marital conflict, internalizing behavior, and externalizing behavior than the 7th graders. The internalizing behavior in boys was influenced by shame, marital conflict, and peer pressure. In the case of girls, the internalizing behavior was affected by shame, mother's warmth rearing, and peer pressure. The externalizing behavior in boys was influenced by self-control and shame. In the case of girls, the externalizing behavior was affected by self-control, shame, marital conflict, and peer pressure. Adolescents who exhibited higher levels of shame than others and higher peer pressure showed internalizing problem behaviors. Adolescents who had less self-control and more shame, experienced more externalizing behavior problems.

• 한국임상보건과학회지
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• 제1권3호
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• pp.39-48
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• 2013

Purpose. This study was performed on survey related dental hygienist job stress and job satisfaction, to improve the work efficiency of the dental hygienist and for dental hygienist to eliminate the cause of stress for health promotion and for management to be able to help to finding ways to provide basic data. Method. This survey is based on 235 people who are dental hygienists working in Changwon city from November 1 to November 30 2012, by statistical analysis of collected data using SPSS Win Program 20.0 version t-test, univariate analysis of variance (one-way ANOVA), correlation analysis that performed to determine statistical significance with a significance level of 0.05 was considered. Results. For correlation of job satisfaction and job stress, the job demands, job insecurity, and workplace culture shows a negative correlation. For Correlation of the physical environment, insufficient job control, interpersonal conflict, and organizational system is, lack of reward shows a positive correlation. The less job stress due to Insufficient job control, interpersonal conflict, organizational system, is, the higher job satisfaction due to job demands and workplace culture is.(p <0.05), The higher job stress is, the higher the job satisfaction is(p <0.05). Conclusions. Job satisfaction and job stress may be relevant each other, there fore several measures should be sought to solve insufficient job control, interpersonal conflict, organizational system and the lack of reward, consequently to increase the job satisfaction of dental hygienists.

• Strategy21
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• 통권43호
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• pp.175-199
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• 2018

Recent marine territorial disputes in the East China Sea and the South China Sea have come to us as a great threat. China, which has recently established the China Coast Guard and has rapidly developed maritime security forces, is trying to overcome the various conflict countries with its power. Japan is also strengthening intensively its maritime security forces. Since Korea, China, and Japan are geographically neighboring and sharing maritime space in Northeast Asia, there is no conflict between maritime jurisdiction and territorial rights among the countries. The struggle for initiative in the ocean is fierce among the three coastal nations in Northeast Asia. therefore, Korea needs more thorough preparation and response to protect the marine sovereignty. As the superpowers of China and Japan are confronted and the United States is involved in the balance of power in strategic purposes, the East Asian sea area is a place where tension and conflict environment exist. China's illegal fishing boats are constantly invading our waters, and they even threaten the lives of our police officers. The issue of delimiting maritime boundaries between Korea and China has yet to be solved, and is underway in both countries, and there is a possibility that the exploration activities of the continental shelf resources may collide as the agreement on the continental shelf will expire between Korea and Japan. On the other hand, conflicts in the maritime jurisdictions of the three countries in Korea, China and Japan are leading to the enhancement of maritime security forces to secure deterrence rather than military confrontation. In the situation where the unresolved sovereignty and jurisdiction conflicts of Korea, China and Japan continue, and the competition for the strengthening of the maritime powers of China and Japan becomes fierce, there is a urgent need for stabilization and enhancement of the maritime forces in our country. It is necessary to establish a new long-term strategy for enhancing the maritime security force and to carry out it. It is expected that the Korean Coast Guard, which once said that it was a model for the establishment of China's Coast Guard as a powerful force for the enforcement of the maritime law, firmly establishes itself as a key force to protect our oceans with the Navy and keeps our maritime sovereignty firmly.

• 한국가정과교육학회지
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• 제23권2호
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• pp.149-159
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• 2011

본 연구는 중학생을 대상으로 성별에 따른 우울의 차이를 살펴보고, 가족 환경과 또래 환경이 청소년의 우울에 어떠한 영향을 미치는지 파악하는 것을 목적으로 하였다. 이러한 연구목적을 위해 우울, 부모와의 관계, 부부 갈등, 또래 관계, 또래괴롭힘을 측정하는 설문지를 구성하여, 경기도 부천 시내 5개의 중학교에서 2학년 학생 667명을 대상으로 설문조사를 실시하였으며, 최종 분석에 633부의 자료를 사용하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 청소년의 우울은 낮은 편이며, 성별에 따라 유의한 차이가 있었다. 남자 청소년보다 여자 청소년이 우울을 더 많이 경험한 것으로 나타났다. 둘째, 청소년의 우울에 미치는 가족 환경과 또래 환경의 상대적 영향력을 살펴보면, 남녀 청소년의 우울에는 또래괴롭힘, 부모와의 관계, 부부 갈등이 영향을 미치는 것으로 나타났다. 남녀 청소년 모두 또래괴롭힘 수준을 높게 인식할수록, 부모와의 관계 수준이 낮을수록, 부부 갈등이 심할수록 우울을 더 많이 경험하였다.

• 한국습지학회지
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• 제8권1호
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• pp.97-106
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• 2006

This study discusses two canceled dam projects, Youngwol Dam in South Korea and Two Forks Dam in Colorado of the United States. Both of them illustrate how the new paradigm applies to regional water projects because they became victims of environmental opposition in the new paradigm. While the cases have no apparent close relationships and they occurred in different decades, they offer interesting comparisons. They were basically struggles between water development coalitions and environmental protection coalitions on regional water conflicts. The two proposed projects brought about fierce debates on large dam as they embraced a wide-range of environmental, social, and political issues rather than construction of dams themselves. Huge anti-dam oppositions scrapped them at the cost of nearly ten years for decision-makings and enormous financial resources for feasibility studies respectively. It identifies who the policy actors were, what the policy strategies were, and how the water policies evolved in both countries. The decision-makings on the two projects appeared at first glance to be made under formal institutional frameworks, but in actuality, they relied significantly on decisions of the two important political actors. The Korean society began to learn negotiation and cooperation approaches to solve the water conflict by establishing the Joint Task Force Team on Youngwol project in 1999. The team is recognized as a new conflict resolution method in South Korea because a diverse of stakeholder interests voluntarily participated in the decision-making process and discussed water issues directly. Even though the projects resulted in futile fruits in each country, they illustrate the images of the new paradigm that significantly affected in formulating regional water policies in South Korea and the United States.

• Human Ecology Research
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• 제51권3호
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• pp.293-306
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• 2013

The aim of this study is to examine the effects of the story sharing activity on-conflicting situations by the use of children's story on the theory of mind and peer competences of preschoolers so that appropriate teaching materials can be allocated for the actual preschool education site. The subjects of this study were 46 preschoolers under the age 4 at the attached kindergarten of P University in Pohang City, Gyeongbuk and in which 23 children among them were assigned to a test group and the other 23 to a control group. The collected data was analyzed by SPSS ver. 15.0 program and Cronbach's ${\alpha}$ coefficient was yielded to verify the reliability for each scale. The multivariate analysis of covariance (MANCOVA) was conducted. The analysis results are as follows. First, the story sharing activity on conflict situations by using children's story had a significant effect on the preschoolers' general appearance and actual task as sub-factors of the theory of mind, whereas no significant effects were found regarding the content change task and position change task. Second, the story sharing activity on conflict situations by using children's story had significant effect on the preschoolers' overall sensitivity, insecurity and pro-sociability as sub-factors of the peer competences, whereas no significant effects were found regarding the aggression, exclusivity and anti-sociability.

• 한국정보통신학회논문지
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• 제18권3호
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• pp.526-534
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• 2014

본 논문에서는 UWB 기술 기반 WiMedia Distributed Medium Access Control (D-MAC) 프로토콜에서, 디바이스들의 이동성으로 인해 발생하는 Distributed Reservation Protocol (DRP) 예약 충돌 현상을 분석한다. 그리고 DRP 예약 충돌 시 발생하는 성능 저하를 감소시키기 위해 Conflict Resolution (CR) 방식과 DRP 릴레이 기술을 제안한다. 본 논문에서 제안하는 DRP 릴레이 프로토콜은 충돌대상 디바이스에게 예약된 자원을 유지할 수 있도록, DRP 예약 충돌 시 릴레이 노드를 경유하여 다른 Indirect Link 링크를 빠르게 예약할 수 있는 분산적인 자원 예약 프로토콜을 제안한다. 이동성 환경을 고려한 시뮬레이션 결과는 CR 기술과 함께 DRP 릴레이 기술을 적용하여, 디바이스들의 이동성이 증가하더라도 수율 감소를 방지할 수 있음을 나타내었다.

• 국제지역연구
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• 제15권2호
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• pp.25-47
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• 2011

본 논문은 로버트 하조의 1993년 논문을 바탕으로 중동지역에서의 평화와 갈등의 과정을 분석 하였다. 중동지역에서는 이스라엘과 연관된 수많은 무력적 충돌 가능성이 상존하고 있는 지역이다. 특히 로버트 하조의 분석처럼 팔레스타인과 시리아, 그리고 이스라엘 간의 관계는 중동 문제의 핵심이라고 볼 수 있다. 그가 지적한 이 두가지 문제는 우리가 그간 간과해왔던, 혹은 전체적으로 중동문제를 일괄적으로 다루어왔던 결과이다. 아랍 이스라엘 분쟁은 역사상 가장 다루기 힘든 분쟁 중 하나이다. 이에 관련하여 로버트 하조의 분석은 여러면에서 시사하는 바가 크다고 볼 수 있다. 먼저 1993년 로버트 하조는 '이 분쟁은 끝나지 않는 투쟁이다.' 라고 결론 내렸다. 본 논문에서는 진전, 혹은 개입 기간 부족이라는 관점에서, 그리고 현 시대의 전략적 환경에 대항하는 방식으로서 그의 분석을 살펴보고자 한다. 이를 위해 여러 가지 실증적 문헌연구를 통해 하조의 평가가 유효하다는 것을 증빙해 보려고 한다. 1993년부터 미국, 이스라엘, 그리고 시리아가 희망적인 합의를 이끌어 낼 수 있다는 잠재적인 시각이 다양한 논의들과 결합되어 진행된 가운데, 난민들에 대한 귀환의 권리, 국경문제, 그리고 예루살렘에 대한 논쟁은 가까운 미래에는 제기되지 않을 것으로 보인다.

• 대한간호학회지
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• 제49권4호
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• pp.386-397
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• 2019

Purpose: This study examined the effect of hospitals' family-friendly management on married female nurses' retention intention. The focus was the mediating effects of the work-family interface (work-family conflict, work-family enrichment and work-family balance). Methods: This study was a cross-sectional study. The participants were 307 nurses working at five public and five private hospitals with more than 200 beds in Seoul. Data were collected using structured questionnaires from September 10 to September 17, 2018 and analyzed with SPSS 24.0. Data were analyzed using an independent t-test, a one-way ANOVA, Pearson's correlation coefficients, and multiple regression following the Baron and Kenny method and Sobel test for mediation. Results: There were significant correlations among family-friendly management, the work-family interface, and retention intention. Work-family conflict showed a partial mediating effect on the relationship between family-friendly management and retention intention. Work-family enrichment showed a partial mediating effect on the relationship between family-friendly management and retention intention. Work-family balance showed a partial mediating effect on the relationship between family-friendly management and retention intention. Conclusion: These findings indicate that both hospitals' family-friendly management and nurses' work-family interface are important factors associated with nurses' retention intention. Therefore, hospitals should actively implement family-friendly management for nurses and establish strategies to enhance nurses' work-family interface for effective human resource management.