• Journal of Engineering Education Research
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• v.11 no.2
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• pp.90-101
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• 2008

This study was conducted to develop pre-engineering educational program model based on STEM integration approach. To accomplish this purpose literature review and content validity ratio survey were carried out. The main results of this study were as follows: First, the conceptual model of STEM integration approach was constituted. Second, the conceptual model of pre-engineering educational program model based on STEM integration approach was proposed. Third, the formation steps of inquiry project activity, problem solving activity, and creative engineering design activity were developed to structure the educational program.

• Journal of Information Management
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• v.32 no.2
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• pp.26-39
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• 2001

Various controlled vocabularies such as thesaurus and classification used for effective information retrieval contain different terms in expressing the same concept or meaning. National Library of Medicine has developed the Unified Medical Language System(UMLS) to solve the problems of information retrieval and integration resulted from the difference of concepts between different sources. The UMLS development was initiated in 1982 as a long-term project, and the 2001 edition of the UMLS consists of three parts : Metathesaurus, Semantic Network, and SPECIALIST Lexicon. This paper reviews background and structure of the UMLS including applications in PubMed, NLM Gateway.

• The Journal of Society for e-Business Studies
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• v.22 no.2
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• pp.79-98
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• 2017

Understanding the consumer-brand relationship in the IT market from the "emotional" or "love" perspective requires an urgent research effort to fully comprehend IT consumers beyond brand loyalty. This study introduces and attempts to empirically validate the concept and measurement of "Lovemarks," which capture the emotional relationship between consumers and IT brands, especially smartphone brands. Having a second-order confirmatory factor analysis for three different smartphone brands, this study extracted 18 final items with six constructs of mysteriousness, sensuality, intimacy, performance, trust, and reputation. The results indicate that the Lovemarks are psychometrically valid and reliably measure the emotional interaction of consumers and IT brands beyondbrand loyalty.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.396-396
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• 2011

본 연구에서는 레이더 강수량 자료를 대상으로 예측모형을 구축하기에 앞서서 강수장이 가지는 특징을 활용한 Tracking 기법을 개발하고자 한다. Tracking 기법이라 함은 시간에 따라 움직이는 강수장을 추적하는 개념이다. 최근에 태풍, Hurricane 등의 경로를 추정하기 위한 방법으로 국외를 중심으로 연구가 시작되고 있다. 본 연구에서 제안하는 방법론은 모멘트 개념을 중심으로 강수장으로부터 1차모멘트와 2차모멘트를 추정함으로써 강수장의 중심, 강수장의 이동 방향, 강수장의 폭 등 다양한 정보를 유도할 수 있다. 일단 이러한 정보들이 유도되면 이를 통해 강수장의 특성을 범주화 시킬 수 있으며 이를 예측 모델과 연결시킬 수 있을 것으로 판단된다. 격자형태의 레이더강수량으로부터 1, 2차모멘트를 추정하기 위한 식은 다음과 같다. 모멘트 추정을 통해 총 5 개의 속성을 추출할 수 있다. 즉, 위경도상의 도심과 방향의 공분산, y방향의 공분산, xy의 공분산 등을 이용하여 다음 그림과 같이 강수의 중심과 강수장의 형태를 수치적으로 추정할 수 있다. 강수장의 형태는 공분산으로부터 추정하여 타원체로 나타내었다. 이러한 과정을 통해 강수장의 중심과 모양의 Tracking이 가능하며 이를 활용한 예측모형의 개발이 가능할 것으로 판단된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.180-180
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• 2017

최근 기후변화에 따른 기상이변으로 전 세계적으로 가뭄피해가 증가하고 있다. 기존의 가뭄지수들은 자연현상만을 분석하여 가뭄의 심화정도를 나타내고 있다. 하지만 도시개발에 따른 도시화가 진행됨에 따라 인문 사회적 요소들이 서로 얽혀서 결합되어 단순히 자연현상만으로는 가뭄재해를 표현하기 어려워지고 있다. 본 연구에서는 복원력개념을 고려한 사회경제적 가뭄지수를 개발하고자 하였다. 복원력개념을 도입하기 위해서 가뭄위험지수, 가뭄대응능력 지수, 가뭄취약성 지수를 산정하였다. 가뭄위험지수로는 SDI(Streamflow Drought Index)를 사용하였으며, 사회 경제적 가뭄을 판단하기 위해서 적합 가뭄지속기간을 고려하였다. 대응능력 지표로는 인문, 사회적 요소와 생활, 농업, 공업용수 공급량, 지하수 함양량을 고려하였다. 취약성 지표로는 인문 사회적 요소와 생활, 농업용수 부족량, 기상요소를 고려하였다. 각 요소의 가중치는 AHP분석을 통해 산정하였다. 산정된 SDI(Streamflow Drought Index), 가뭄대응능력지수, 가뭄취약성지수를 표준화하여 잠재가뭄피해지수 PDDI(Potential Drought Damage Index)를 산정하였으며, 실제 가뭄 기간을 참고하여 등급화를 실시하였다. 그 후, 단순강우를 고려한 SPI(Standardized Precipitation Index)와 강우와 증발산량을을 고려한 RDI(Recommaissamce Drought Index)와의 비교를 통하여 복원력 개념을 고려한 잠재가뭄피해지수의 필요성을 확인하였다.

• Journal of the Korean Society of Earth Science Education
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• v.11 no.1
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• pp.38-54
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• 2018

The purpose of this study is to compare the concepts and inquiry activities of textbooks in Korea and Singapore textbooks focused on the field of geology, and to provide implications for the future development of Korean curriculum and textbooks. For the study, it was selected as the 2015 revised science textbook in Korea and 'My pals are here' that is the most used textbook in Singapore. The results of this study are as follows: First, Korea had a lower level of concept than Singapore. Second, we could confirm that Korea is composed of 'inquiry' centered compared to Singapore. Third, Korea deal with only one concept in one grade, however Singapore is structured so that concepts are divided hierarchically into several grades. Fourth, Singapore has been instructing students to learn how the learned concept interact with the Earth, which is different from Korea. These results may give implications for the curriculum composition and textbook development in Korea.

• Journal of the Korea Convergence Society
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• v.11 no.1
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• pp.327-335
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• 2020

The purpose of this study was to investigate conception of children's hospitalization stress and to make clear concepts, and to use Walker & Avant's concept analysis method. Children's hospitalization stress attributes were derived from physiological changes, individual-environmental interactions, cognitive and psychosocial developmental stage responses, and intrinsic and outward changes due to coping styles. The prerequisites for hospitalization stress of children were disease severity, biological factors, and support system, and the results were hospitalization adaptation, disease and health recovery, improvement of child development, and acquisition of coping skills. In order to solve the prerequisites for Hospitalization stress of children, it is necessary to be aware of the disease and to establish a support system of parent-family. Afterwards, we suggest more qualitative research on the hospitalization stress of children, the development of tools that reflect the characteristics of the hospitalization stress of children, and the development of programs to solve the Hospitalization stress.

• Ecology and Resilient Infrastructure
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• v.7 no.1
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• pp.15-25
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• 2020

We've compared and conceptually evaluated the newly emerging concept of nature-based solutions (NbS's), in the aspect of water management, and existing similar solutions of different naming, all of which are based on ecosystem functions. In this study, it is found that NbS's seem significant and meaningful both educationally and understandably in the aspect that it can comprehensively cover and include the existing methodologies and solutions using the functions of natural ecosystem to socio-environmental challenges. It, however, seems not quite different from the broad-meaning of green infra, including Eco-DRR, in terms of the approaching methodologies in water management. The conceptual and spatial hierarchy of each practice in water management considered in this study can be expressed in the narrowing order of NbS-(EE)-BGI-(CRT)-GI-LID. Last, the term LID, which is the best management practice for storm water management in the development project, can be replaced with the term GI for clarification and less confusion both in academia and practice.

• Journal of Science Education
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• v.38 no.3
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• pp.703-717
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• 2014

In physics, metal simulation is an important mechanism to understand and create concepts. If students have difficulty in mental simulation, understanding the concept of physics also gets difficult. By providing guide for spatial manipulation to students, 3D simulation contents can help them understand the concept of physics. In this study, the 3D simulation contents developed to help understanding the concept of light going straight and shadow is applied to 20 college students. The results, Hake gain is 0.93, showing high level of understanding about the class. In addition, through mental simulation, students predict the phenomenon well about the new context. This is shown that students' understanding of concept through 3D simulation contents are carried out well.

• The Journal of Korean Association of Computer Education
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• v.18 no.3
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• pp.37-47
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• 2015

The purpose of this study is to review the concept mapping tools and provide implications for designing tools that support collaborative learning activities. For this purpose, representative concept mapping tools - Convince Me, Knowledge Forum, Cmaptools, Mindmeister, Belvedere - was analyzed by using the 3C(Communication, Coordination, Cooperation) framework. We have applied three research methods; 1) literature review on design principles of tools, 2) heuristic evaluation, 3) focus group interview. As a result, most of comcept mapping tools supported communication functions but partialy supported coordication and cooperation features.