• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.06a
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• pp.19-20
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• 2009

International Maritime Organization(IMO) recommends the installation of an Automatic Identification System(AIS) according to requirements by SOLAS Chapter 5 to avoid maritime collision. AIS provides traffic information of other ships that may be used for maritime traffic control, SAR(Search and Rescue) and collision avoidance to apply safety management. In this paper, preliminary results to implement an aeronautical surveillance transceiver using AIS transceiver based on ADS-B concepts are described. Although altitude information is not required for AIS since the AIS is operated at MSL(Mean Sea Level), altitude information can be extracted by a GPS chip-set in the ALS transceiver. ADS-B transceiver is implemented by defining a surveillance message format including the altitude information and modifying SOTDMA protocol. Ground tests and flight tests are performed to validate the implementation results.

• The Journal of Korean Association of Computer Education
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• v.10 no.2
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• pp.115-123
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• 2007

Collaborative knowledge is continuously producted and modified by group individuals during collaboration and it is also fostered in a radical trust environment like Wiki. The example is Wikipedia. However I found out a big problem as difficulties of exploring when the knowledge space is extended more and more widely. To solve this problem, collaborative knowledge management systems are implemented based on wiki. The one is navigation map that supports the efficient exploring and the another is knowledge map that supports a convergent thinking in a group. In this study, we examined the effectiveness of navigation map and knowledge map.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.196-198
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• 2014

Wireless Sensor Networks(WSN) 기반의 Border Surveillance Networks(BSN)는 다양한 제한조건을 동반하며 침입 혹은 환경 등을 감시함을 목적으로 하고 있기 때문에 이벤트 발생시 신뢰적인 데이터 전송은 매우 중요한 부분을 차치하게 된다. 본 논문에서 적용한 대표적인 요구기반 라우팅 방법인 Ad hoc On-demand Distance Vector Routing(AODV)는 BSN 에 적용하였을 경우 홉 수(Hop Count)를 메트릭으로 최적의 경로를 계산하고 선택하여 Uni-Path 로 데이터를 전송하게 된다. 이때 AODV 는 Uni-path 로 데이터 전송을 진행하게 되며 링크의 단절이 빈번히 발생하는 BSN 의 환경적 요인으로 데이터 전송의 신뢰성이 감소하게 될 것이며 이는 비효과적인 데이터 전송을 야기하게 된다. 따라서 본 논문에서는 Multi-path 개념을 도입하여 데이터 전송 시 링크단절에 의해 발생하는 시간의 지연을 줄이고 더욱 신뢰성 있게 데이터를 전송할 수 있는 방법을 제안한다. 제안하는 방법은 송, 수신하는 두 노드의 전송범위에 공통으로 속한 노드들이 전송되는 데이터를 중복 전송하게 된다. 그리하여 링크의 단절이 일어날 경우 발생하는 경로 재 탐색 및 경로복구의 발생 빈도를 줄이고 동시에 데이터 전송률을 증가시켜 신뢰적인 데이터 전송을 하게 된다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.175-176
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• 2020

본 논문에서는 가상 현실 기기를 이용하여 스택, 큐, 트리 등과 같은 복잡한 자료구조에 대한 학습을 도와주는 학습 지원 시스템을 제안한다. 컴퓨터 프로그래밍에서 적절한 자료구조를 선택함으로써 보다 효율적인 알고리즘을 구현할 수 있으며 프로그램 실행시간, 메모리 용량과 같은 컴퓨팅 자원을 효율적으로 사용할 수 있다. 본 논문에서 제안하는 EZ 학습 시스템은 비전공자의 자료구조 학습에 도움을 주며 특히, 스마트 폰 기반의 가상 현실 기기를 사용하여 학습자의 흥미를 유발하고자 한다. 학습자는 가상공간을 통해 정보를 보다 쉽게 받아들이고, 게임적인 요소를 통해 학습에 대한 집중도를 높일 수 있을 것으로 기대된다. EZ 학습 시스템은 스택 자료형에 대한 개념 설명, 스택 연산자 학습, 미로 탐색을 통한 스택 응용 사례를 제공한다.

• Journal of The Korean Association For Science Education
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• v.40 no.3
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• pp.271-289
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• 2020

This study investigates the types of teacher feedback in the process-centered assessment for scientific argumentation. The process-centered assessment visualizes the process of developing scientific argumentation at a group level. Four teachers and 353 high school students participated in this study. We analyzed video recordings, the collaborative modeling-argumentation papers, and teachers' interviews. The findings indicate that the teachers provided feedback on scientific concepts and the development of small group argumentation. We presented a representative case for each category in detail. The study suggests that teachers' efficient use of feedback leads to improvement in students' self-regulation. This study contributes to providing specific and useful guidelines on the use of process-centered assessment for enhancing students' scientific argumentation.

• Cross-Cultural Studies
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• v.52
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• pp.253-275
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• 2018

The concept of 'utopia' in Korea was formed in the early 20th century. 'There isn't in this world but good world' could be found using science and it was an ideal place for science to realize in the 1900s of Korea. Utopia was emphasized as an ideal world of fantasy in the 1920s. It was an ideological world wherein socialism was realized by a purposeful science. Utopia, conversely, was the history of scientific socialism defined as past example of communism that could not be implemented but was fancied. There were works suggesting that it was a dark dystopia such as Society after 800,000 years written by H.G. Wells or Artificial Worker by Young-hee Pak, but there were implied at the will of utopia.

• Journal of Korean Philosophical Society
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• v.123
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• pp.189-208
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• 2012

"관자(管子)" 사편(四篇)은 전국 말 직하황노도가(稷下黃老道家)의 문헌으로 중국철학사에 있어 매우 중요한 위치를 점하고 있다. 하지만 "관자(管子)" 사편(四篇)은 문헌과 저자에 대한 기록이 불확실하고 제자백가의 사상을 포괄적으로 수용 복잡한 사상체계를 형성하고 있기 때문에 오랜시간 사람들의 주목을 받지 못했다. 1940년대 학자들은 중국철학 사료를 다시 정리하였고 이때 곽말약(郭沫若)에 의해 "관자(管子)" 사편(四篇)의 명칭이 처음으로 등장하게 된다. 1994년 "직하황노학파적비판(稷下黃老學派的批判)"과 "송견윤문유저고"에서 곽말약(郭沫若)이 "관자(管子)" 가운데 "심술(心術)" 상하(上下), "백심(白心)", "내업(內業)"의 사편(四篇)를 송견(宋?)과 윤문(尹文)의 저작이라고 주장한 이래 고문헌의 출토와 더불어 "관자(管子)" 사편(四篇)는 다시 학계의 관심을 받기 시작한다. "관자(管子)" 사편(四篇)의 저작 시기는 전국말로 추정된다. 이 시기는 사상의 르네상스라고 불릴 만큼 많은 학자들이 저마다의 독특한 논리들로서 당시의 사회의 문제점을 직시하고 그 해결방안을 모색하였던 시대였다. 농업생산력의 향상과 교통의 발달로 많은 지식인은 제(齊)나라의 직하(稷下)에 모여 전대의 역사적, 철학적 유산을 기반으로 심(心)과 도(道)에 관한 논의를 벌였고, 그 통합적 저작물이 "관자(管子)" 사편(四篇)이다. 때문에 "관자(管子)" 사편(四篇)는 전국시대 제자학(諸子學)을 총정리하는 종합서의 성격을 가진다. 본 연구의 목적은 "관자(管子)" 사편(四篇)에 나타나는 심(心)개념의 연구를 통해 전국말 직하황노도가(稷下黃老道家)의 심(心)에 대한 이해를 살펴보는데 있다. 이를 위해 먼저, "관자(管子)" 사편(四篇)의 중심철학범주인 도(道), 기(氣), 정기(精氣)와 심(心)의 관계에 대하여 살펴보고, 다음으로 "관자(管子)" 사편(四篇)에 보이는 심(心)의 개념분석을 통하여 구체적인 심(心)의 구조와 기능에 대하여 탐색할 것이다. 그리고 마지막으로 심(心)과 그 수양론(修養論)에 대하여 검토할 것이다.

• Journal of the Korea Convergence Society
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• v.13 no.4
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• pp.89-101
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• 2022

This study attempted to develop a scale that Interpersonal Caring Behavior Measurement Tool, based on Kim's Interpersonal caring theory, and confirmed its reliability and validity. The items were used as 50 items of 10 concepts based on the Su-ji Kim's interpersonal care theory in Korea developed by Seon-hee Yun. Subjects were nurses working at a general hospital or higher, who agreed to participate in this study. As a result of the study, 50 questions in 10 concepts of the first were derived from active listening, accepting, complimenting, noticing, and companioning through exploratory and confirmatory factor analysis, and criterion validity and reliability were verified. This tool is meaningful in that it can measure Caring Behavior from the perspective of the subject and family, and can be used as an index to visualize the quality improvement of nursing care by quantifying it.

• Journal of the Korean Institute of Intelligent Systems
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• v.25 no.6
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• pp.529-535
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• 2015

Biological networks have been handled with the static concept. However, life phenomena in cells occur depending on the cellular state and the external environment, and only a few proteins and their interactions are selectively activated. Therefore, we should adopt the dynamic network concept that the structure of a biological network varies along the flow of time. This concept is effective to analyze the progressive transition of the disease. In this paper, we applied the proposed method to Alzheimer's disease to analyze the structural and functional characteristics of the disease network. Using gene expression data and protein-protein interaction data, we constructed the sub-networks in accordance with the progress of disease (normal, early, middle and late). Based on this, we analyzed structural properties of the network. Furthermore, we found module structures in the network to analyze the functional properties of the sub-networks using the gene ontology analysis (GO). As a result, it was shown that the functional characteristics of the dynamics network is well compatible with the stage of the disease which shows that it can be used to describe important biological events of the disease. Via the proposed approach, it is possible to observe the molecular network change involved in the disease progression which is not generally investigated, and to understand the pathogenesis and progression mechanism of the disease at a molecular level.

• Journal of the Korean School Mathematics Society
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• v.16 no.2
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• pp.337-362
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• 2013

The purposes of the study were to develop STEM instructional materials for teaching and learning mathematics and to investigate how the STEM based approach affects on students' learning of mathematics in cognitive and affective domain and career choice. STEM instructional materials were designed for learning of mathematical concepts in the contexts of science, technology, and engineering as well as real world. According to the results of the study, STEM instructional materials for teaching and learning mathematics were effective for improving students' problem solving ability and affective achievement such as self-regulation, self-efficacy, and value of mathematics. In addition, STEM program played a positive role in tempting students' career choice into science and engineering fields including mathematics.