• Proceedings of the Korean Information Science Society Conference
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• 2011.06a
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• pp.150-153
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• 2011

연구자들의 연구 주제 선정 및 연구동향 분석하기 위해서 이미 발간된 수많은 논문, 특허, 보고서에서 정보를 수집 및 분석해야 하는 어려움이 있다. 이를 극복하기 위해서 정보추출 연구와 더불어 추출된 정보의 다양한 검색 방법 연구는 필요하다. 그러나 정보추출연구는 활발히 이루어지는 반면 정보의 검색 방법 연구는 상대적으로 주목받지 못하고 있다. 본 연구에서는 고급 정보들을 다양한 방법을 통해 분석된 결과를 제시하여 사용자들이 새로운 연구 성과를 도출할 수 있는 획기적인 서비스를 소개한다.

• Journal of the Korean Society for information Management
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• v.17 no.3
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• pp.147-170
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• 2000

RDF treats all resources independently, that's integrated description model for internet resources description, that provides the model to connect resources that related with the specific resources. This article performs theoretical review of RDF model and syntax specification and RDF schema specification that's a common rule of semanics, structure and syntax those provides search and access in the area of dispersed information environment of internet and Dublin Core that's description element for build metadata. And with this way it's materialized metadata design, schema, DTD of Dublin Core element for building RDF-based metadata that is XML application.

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.06a
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• pp.79-79
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• 2011

The oceans are an untapped resource, capable of making a major contribution to our future energy needs. In the search for a non polluting renewable energy source, there is a push to find an economical way to harness energy from the ocean. Tidal stream is one of ocean energy form that is being investigated as potential source for power generation. Tidal current turbines are therefore designed as conversion machinery to generate power from tidal currents. A study on energy extraction from tidal currents is presented in this paper.

• Journal of Korea Society of Industrial Information Systems
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• v.17 no.5
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• pp.53-59
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• 2012

Each year, the Forest Service performs measurements to gather statistics regarding on the forest resources and forest character. However, this is not easily obtainable information due to the lack of human accessibility to the survey sample. I proposed a new method to gather data which utilizes the technology of digital imaging. This new method allows over 50% of the sample to be viewable.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.7
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• pp.3307-3321
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• 2018

With the ever-increasing queries related to temporal (or time-related) information, such as the product launching time, in search engine, most web pages will be augmented with such information in the future. Meanwhile, the gradual emergence of the use of electronic textbooks (or e-Textbooks), which enrich the traditional paper-based textbooks with multimedia contents such as interactive quizzes and multimedia-based simulations, has led us to infer that e-Textbooks will be blended with temporal information to support learning. The use of temporal information helps teachers and students to understand the level of prior knowledge required to study a topic, as well as the sequence of learning activities and related sub-topics, that best attains the educational goals. This paper presents a simple yet efficient tool called TimeMap, which is based on mind mapping, to create an e-Textbook called TimeBook that takes account of time-related curriculum and the ability of students to learn via collaboration.

• Journal of Korean Elementary Science Education
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• v.37 no.1
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• pp.66-79
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• 2018

The purpose of this study is to explore how pre-service elementary teachers perceive and use smart learning environments. For this purpose, 23 pre-service elementary teachers who took theory and practice in a science education course were asked to develop lesson materials using smart tools and make a self-report questionnaire. These data were categorized in an instructional, exploratory, and interactive approach, depending on how they guided students to access knowledge and information. As a result of the study, pre-service teachers perceived the smart tools as the exploratory and interactive learning tools to be used for students to actively search for and interact with data and knowledge. But in developing lesson materials, they usually used the smart tools for resource sharing and communication in the instructional manner. In conclusion, the gap between their perception of smart tools and lesson materials, and the educational implications will be discussed.

• Korean System Dynamics Review
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• v.17 no.2
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• pp.57-79
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• 2016

This study aims to examine the dynamics of the variables related to the program management of Community Child Centers in Daegu metropolitan area and further search for the measures to activate its development based on the Systems Thinking. For these purposes, the study deals with the followings. Firstly, it overviews the legal bases of the Community Child Centers and its present condition and further reviews the relevant studies. Secondly, it summarizes its methodologies. Thirdly, based on the results of the questionnaire and interviews, it draws the major variables to understand its program management and analyzes its causal feedback structure and dynamics. Lastly, it concludes with the measures to activate its program management. This study is expected to make a useful resource to dynamically understand the program management issue of the Community Child Centers in Korea.

• 한국신재생에너지학회:학술대회논문집
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• 2009.11a
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• pp.409-412
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• 2009

In this research, the intensity of solar energy, which was injected to the different angle plane every hour day by day, was technically documented and quantitatively analyzed through actual observations. In order to group every days into days with similar intensity, graph was drawn with respect to time for every day and each area value under the curve was calculated. Then, the search for grouped days having similar intensity curve patterns was carried out and the optimum incident angle of absorber plate was derived to maximize the efficiency of solar energy systems.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.706-708
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• 2005

시맨틱 웹의 등장으로 시맨틱 검색에 대한 관심이 높아졌다. 이에 본 논문에서는 시맨틱 웹 환경의 자원들을 이용하여 시맨틱 검색을 수행하는 검색방법을 제안한다. 기존의 SPARQL(Simple Protocol and RDF Query Language) 시맨틱 질의언어는 추론의 기능 없이 RDF(Resource Description Framework)에서 제공하는 SPO(subiect, predicate, object) 형태의 트리플 패턴 매치만을 제공한다. 본 논문의 시스템은 기존의 SPARQL질의 시스템에 시맨틱 추론기능을 추가하여 검색 결과에 효율성을 증가 시키는 것을 목적으로 한다. 본 논문에서의 시스템은 다음과 같은 특징을 갖는다. 첫째, 시맨틱 웹 환경의 온톨로지 구축을 위해서 W3C에서 온톨로지 언어로 표준화된 OWL(Web Ontology Language)를 사용하여 검색 환경을 구축한다. 둘째, 온톨로지와 메타데이터를 추론하여 시맨틱 검색을 유도하는 OWL추론기를 사용한다. 시맨틱 추론은 온롤로지의 공리(Axiom)을 충분히 활용하는 온톨로지기반 시맨틱 추론과 검색 도메인에 맞는 규칙을 활용하는 사용자 컨텍스트 기반의 시맨틱 추론으로 이루어진다. 셋째, 다양한 시맨틱 검색을 위해 W3C에서 제안되어 차세대 시맨틱 검색 질의언어로 연구중인 SPARQL을 사용한다. 이와 같은 특징은 시맨틱 검색 시스템이 시맨틱 웹 환경의 자원을 충분히 활용하는 결과를 가져온다.

• Journal of Information Science Theory and Practice
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• v.2 no.2
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• pp.59-68
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• 2014

This paper depicts a study conducted on the behavior of physical education students towards Internet usage at Kurukshetra University, Kurukshetra. Specially, the study aims to know the purposes for use of Internet resources and services, frequency of use, places and means of use, student's satisfaction level toward the Internet, and problems faced while using the Internet. A survey was carried out with a sample of 100 physical education students of Kurukshetra University and the response rate was 88%. A well-designed questionnaire was distributed to the students' sample. Amazingly, the results of the study reveal that usage of the Internet in research and education was not favored, whereas email, chatting, and sports websites were commonly used among students. The study also found that too much information on the Internet, slow access speeds, and finding relevant information were the main problems in using the Internet.