• Journal of the Korean earth science society
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• v.26 no.1
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• pp.1-8
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• 2005

The purpose of this study is to identify the effect of Problem-Based Learning on Student's Creativity Ability in Middle School Science Class. The experimental group had Problem-Based Learning classes for six weeks and control group had traditional inquiry instruction for the same period. The results of this study presents that Problem-Based Learning is significantly effective for the improvement of creative skills test and creative tendencies. And PBL group student's had positive thinking for PBL. It's not easy to generalize these results because of many different variables. but the results suggests that teachers should make an effort to improve student's creativity applying Problem-Based Learning. And it's necessary to develop many kinds of problems and teacher's instruction method to enrich creativity in the process of Problem-Based Learning.

• Maritime Security
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• v.4 no.1
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• pp.57-82
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• 2022

The objective of this treatise is to explore the limitations of the current navy manpower utilization system and the ways to improve it from the perspective of Generation Z. As Generation Z, following Millennials, has finally come of age, this new group is constituting a gradually greater proportion of military personnel. Due to the typical characteristics of naval operations, the harmony between Millennials and Generation Z, which is differentiated from Generation X in view of dispositions and traits, is one of the essential issues to be discussed. Generally, in a naval vessel, there are numerous pieces of equipment necessary to carry out a wide range of missions and a large number of crew members who operate them with consistent levels of fighting power. This is all while members are living together within the narrow space throughout the 24 hours of each day. Under such particular circumstances, any inter-generational conflicts may have a disruptive effect on the successful accomplishment of naval missions. Currently, new generations of military personnel are facing social difficulties in different aspects compared with the previous generations, and also have different viewpoints on the military. In this regard, in order to foster true harmony between generations, it is considered necessary to take a closer look at the inter-generational differences from their respective standpoints and to examine whether the military organization has taken adequate steps to respond to such changes. Accordingly, Chapters 1 and 2 cover the environments in which Millennials and Generation Z were raised during their childhood to young adulthood, which are distinct from those of older generations, their viewpoints formed based on such backgrounds, and the need to resolve various conflicts between generations. In Chapter 3, the current actions taken by overseas military powers to enhance the coexistence with Generation MZ are analyzed to find the significant implications they had. Chapter 4 examines the operation environments specific to the navy; identifies the potential barriers to achieving harmony between generations by assessing the current status of personnel utilization in the Korean navy in terms of the seaman, petty officer, and the officer, as well as policy; and outlines the solutions to drive harmony. Finally, Chapter 5 emphasizes the need to establish a genuine empathy between generations based on the understanding of unique inter-generational characteristics. This section also discusses the importance of addressing difficulties in utilizing technology-centered naval manpower, and forecasts a scenario of a naval organization that resolves the problem of utilizing naval personnel and the inter-generational conflicts in the future.

• Journal of KIISE
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• v.44 no.1
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• pp.51-56
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• 2017

The research area for solving question answering (QA) problems using artificial intelligence models is in a methodological transition period, and one such architecture, the dynamic memory network (DMN), is drawing attention for two key attributes: its attention mechanism defined by neural network operations and its modular architecture imitating cognition processes during QA of human. In this paper, we increased accuracy of the inferred answers, by adapting an automatic data augmentation method for lacking amount of training data, and by improving the ability of time perception. The experimental results showed that in the 1K-bAbI tasks, the modified DMN achieves 89.21% accuracy and passes twelve tasks which is 13.58% higher with passing four more tasks, as compared with one implementation of DMN. Additionally, DMN's word embedding vectors form strong clusters after training. Moreover, the number of episodic passes and that of supporting facts shows direct correlation, which affects the performance significantly.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.399-409
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• 2016

Gyeongsangbuk-do moved its provincial office in October, 2015 and has been building a new town with a goal to construct a truly self-sufficient city with the population of 100,000 people before 2027. However, a new town tends to be dualized in terms of its administrative districts, so it is raising a lot of problems regarding from city construction up to operation. In order to solve those problems, this author has selected Si Gun Gu integration that was chosen as a major task to do in 2012 among the basic plans to revise the local administration system announced by the promotional committee to reorganize administrative districts as the range of this research and analyzed how it is going on in Andong-si and Yecheon-gun where a provincial office new town is being constructed. The main contents of this study regard the theoretical model to reform the local administration system, basic plans to revise the local administration system, and necessity and directions for reorganizing administrative districts in Andong-si and Yecheon-gun. Based on that, this author suggests integration of administrative districts as a way for a provincial office new town to establish its identity and grow as a sustainable, new growth focus city in Gyeongsangbuk-do.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.628-637
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• 2020

Recently, discussions on strengthening publicness have emerged to solve social service problems. Its importance is also emerging, but there is not enough discussion about the significance and importance of publicness. Therefore, in this study, the concept of social service publicness, which was presented in previous studies, was categorized and examined, and the future tasks were sought by restructuring the concept of social service publicness. Social service publicness can be variously understood as the concept of organic union in terms of the publicness of the subject, the publicness of the process, and the publicness of the content. Therefore, it is necessary to discuss it from an overall and broader perspective than the existing concept of publicness. In addition, empirical verification and typological studies of publicness can be a useful way to understand the current publicness. Furthermore, social service publicness needs to materialize realistic meaning through a process of discourse rather than a simple conception. It is meaningful in that it attempts to define the elements of social service publicness from a new point of view and suggests future research directions in previous studies in the field of social welfare.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.347-354
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• 2010

Rapidly increasing aged population provides an ample market opportunity for the Korean travel industry, and from national policy perspective, it poses an fortified demands for welfare tourism. In the fierce competition, this emerging market can serve as a lucrative target market for tourism & travel industry in Korea. In addition, using tourism for the aged as a social welfare policy can be a potentially viable means to mitigate the increase social pressure due to rapid population aging. This rationale is based on the assumption that tourism contributes to higher level of perceived life satisfaction compared to other leisure activities among the aged. In this study, using empirical data collected from 185 respondents aged 55 and above in Cheong Ju area, the effect of demographic factors and trip-related behaviors on life satisfaction was tested. The results indicate that economic and health conditions affect life satisfaction positively, while trip-related behaviors did not exert any significant effect on life satisfaction. In light of the results, practical implications for marketing and policy-making were presented in detail.

• Proceedings of the KAIS Fall Conference
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• 2011.12b
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• pp.697-700
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• 2011

무선센서네트워크 (WSN, Wireless Sensor Network) 시스템의 활용분야가 다양해짐에 따라 기존 WSN의 문제점을 개선하기 위한 연구가 활발히 이루어지고 있으며, 한정된 배터리 자원 문제는 반드시 해결해야하는 주요한 과제이다. 이러한 문제점을 해결하기 위하여 원격에서 무선 전송 기술을 통하여 에너지를 전송하는 자기유지 지원 기술이 주목받고 있다. 자기유지 지원 기술은 센서 노드의 배터리 교체 및 에너지가 열악한 환경에서 동작 가능한 에너지를 전송하는 기술로서 건물상태 모니터링, 전장 감시 등과 같은 다양한 분야에서 활용되고 있다. 이러한 자기유지 지원 기술은 WSN을 구성하는 센서 노드들 전원 상태를 확인하는 것이 매우 중요하며, 이에 따라 에너지를 공급해야 한다. 따라서 본 논문에서는 자기유지지원을 위한 노드 전원 관리 모니터링 시스템을 설계 한다.

• Journal of Science and Technology Studies
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• v.16 no.1
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• pp.63-89
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• 2016

The purpose of this article is to re-interpretate 'Post Catch-up Studies' on the Korean innovation system with the framework of 'Transition Studies'. The viewpoints of the vision, research area and system innovation process of Post Catch-up studies are reviewed and reconfigurated. The Transition Studies concepts of Sustainability, Coevolution of industry and society, and transition management are introduced into the Post-catch up Studies and discussed. It is suggested that Post catch-up studies should support sustainability system transition and make use of transition management tools for the sustainable post catch-up innovation and policy.

• Journal of the KSME
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• v.35 no.7
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• pp.593-602
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• 1995

수출주도형 산업구조를 가지고 있는 우리 나라의 경제여건은 1960년대 초 경제개발 5개년 계획을 수립한 이래 지속적인 성장을 기록하여 왔다. 그러나 1986년도에 3저라는 국제경제여건을 호기로 삼아 국제무역수지 흑자를 기록한 이후 선진국의 보호장벽 강화, 세계적인 BLOCK 경제화, WTO 출범에 따른 국내시장 개방압력, 국내임금의 급속한 상승 등 수많은 대내외적 여건으로 인하여 우리경제의 성장에 큰 부담으로 작용하고 있다. 1994년의 경우 전체무역적자가 63억 3천만 달 러를 기록함으로써 한국경제의 계속적인 무역역조현상이 큰 문제점으로 대두되고 있고 1994년 기준으로 전체무역적자의 188%이상에 해당하는 118억 7천만 달러가 대일무역에서 발생한 대일 역조라는 사실과 최근 몇년간 대일무역적자는 다소 개선되고 있으나 전체 무역적자에서 차지하는 비중이 더욱더 높아가고 있는 것에 대한 대책이 시급한 실정이다. 이같은 대일무역적자 문제는 1960년대 이후 급속한 경제성장만을 추구하여 노동집약형 사업이 주가된 경제성장의 결과이며, 산업재, 특히 기계분야에 대한 기술축적의 부족으로 대부분의 자본재 및 중간재와 기술력에 대한 대일의존도의 심화 등에 그 원인이 있다고 할 수 있다. 이러한 점에서 수출 주도형의 한국경제 하에서는 대일무역역조 특히 기계공업분야의 역조현상은 반드시 해결해야 할 중요한 정책과제 임을 인식해야 하며, 이 글에서는 이에 대한 다각적인 대책을 검토하여 해결방안을 제시해 보 고자 한다.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.166-166
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• 2011

연료전지 핵심 부품 가운데 하나인 분리판(Bipolar plate)는 막전극체(MEA), 기체확산층(GDL)과 함께 발생한 전류의 수집 및 전달, 반응 가스의 수송, 반응/생성물의 수송 및 제거, 반응열 제거 등을 위한 냉각수 전달 등의 다양한 역할을 담당한다. 이러한 역할을 위하여 분리판은 우수한 전기전도성, 열전도성, 화학적 안정성이 요구되어 진다. 기존의 연료전지용 분리판은 흑연계 소재 및 수지와 흑연을 혼합한 복합 흑연 재료를 통해 제조하여 요구 되어지는 물성을 만족시켜 왔으나 흑연계 분리판의 경우 강도 및 가스 밀폐성 측면에서 낮은 특성을 보이며 특히 고가의 제조 공정 비용과 낮은 양산성으로 인하여 자동차 연료전지 상용화에 수많은 해결 과제를 안고 있었다. 흑연계 분리판의 이러한 문제점을 대체하기 위한 연구로 최근 금속계 분리판의 적용 및 개발이 활발하게 진행되고 있다. 특히 금속계 분리판은 양산 제조 공정이 적용 가능하여 대량생산이 가능하며 자동차 연료전지 스택의 경량화 및 박판화가 가능하다는 장점을 가지고 있다. 그러나, 박판의 스테인리스강을 소재로 적용한 금속분리판의 양산을 위하여 반드시 선행되어야 할 연구가 바로 금형 코팅 연구이다. 일반 자동차 생산 금형을 평균 약 50만타로 예측한다면 연료전지 금속계 분리판 성형 금형의 현재 수명은 약 10만타로 추정 가능하다. 이러한 원인은 고하중의 프레스 사용과 정밀 금형으로 인한 극한 공정 조건으로 야기된 결과이며 문제 해결을 위하여 성형 금형에 PVD 코팅 적용 연구를 진행하였다. 성형 금형의 PVD 코팅 적용을 통하여 금형 교체 주기 감소를 통한 생산 원가 절감 및 이형성 개선을 통한 성형성 확보를 목표로 본 연구를 진행하였다.