• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.539-542
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• 2009

해군에서는 소나를 이용하여 수중 표적을 효과적으로 탐색하기 위한 소나운용전술을 개발하기 위해 노력하고 있다. 효율적인 소나운용전술 개발을 위해서는 먼저 다양한 운영전술에 대한 효과도를 분석할 수 있는 시뮬레이션 시스템이 필요하다. 시뮬레이션 시스템은 해양환경 정보, 자함 정보, 소나 정보, 그리고 수중표적의 정보를 매개변수로 입력받아 운용전술에 대한 시뮬레이션을 수행하며, 시뮬레이션의 진행에 따른 다양한 정보를 제공할 수 있어야 한다. 본 연구에서는 다양한 환경에서 수중표적에 대한 함정의 최적 탐색 전략을 평가할 수 있는 탐색효과도 분석용 시뮬레이션 시스템을 설계 개발하였다. 시뮬레이션 시스템은 다양한 형태의 해양상태를 반영할 수 있도록 소나방정식 및 탐지확률곡선을 이용하여 개발되었으며, 표적의 실제적인 행동패턴을 고려하여 여러 가지 형태의 기동 패턴을 시스템에 묘사하였다. 개발된 시스템은 앞으로 수중표적에 대한 효율적인 소나운용전술을 개발하고 발전시키는데 유용하게 사용될 수 있을 것으로 판단된다.

• Proceedings of the Korea Database Society Conference
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• 2001.06a
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• pp.392-406
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• 2001

오늘날 기업에서의 인터넷 비즈니스는 매우 중요하다. 현재 대부분의 기업에서 e-Business를 추구하거나 준비중이고, 또한 많은 기업에서 인터넷 전담팀을 구성하는 등 e-Business에 매진하고 있다. 하지만, 수익모델의 부재와 체계적인 e-Business 전략의 부족으로 노력과 투자한 만큼의 성과를 올리지 못하고 있는 실정이다. 따라서 본 연구에서는 체계적인 e-Business 전략수립을 위한 방법론을 개발함으로써 효과적인 전략수립과 e-Business 활성화에 기여하고자 한다. 본 연구의 내용으로는 첫째, 놀란의 정보시스템 성장단계론에 근거하여 인터넷 비즈니스 역시 비즈니스 기능차원에서 성장한다는 차원에서 인터넷 비즈니스 성장단계 모델을 탐색적으로 분석하였다. 둘째, 인터넷 비즈니스 성장단계 모델에 근거하여 단계별 인터넷 비즈니스 수준을 기능 중심으로 평가할 수 있는 모델을 개발하였다. 마지막으로, 분석결과를 종합하여 인터넷 비즈니스 경영전략을 수립하기 위한 방법론을 제시하였다.

• Korean journal of communication and information
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• v.70
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• pp.246-276
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• 2015

From a historical perspective of risk communication, risks can be classified by their associated level of responsibility. In the case of technical risks such as hazardous chemical accidents, people perceive that risk-related organizations have a high level of responsibility; however, they do not in traditional risks such as natural disasters. This study aims to examine risk information seeking and processing, as seen in two types of risk, based on the Risk Information Seeking and Processing(RISP) model. For this purpose, hypotheses and a research question are developed with current domestic risk issues, and the results show significant differences in risk information seeking and processing between the two types of risk. Specifically, in the case of the chemical spill accident, negative emotion against relevant institutions makes different information seeking and processing compared to the natural disaster. The low level responsibility risk such as typhoon comparatively follows the flow of the original RISP model. However, the high level responsibility risk such as the hydrofluoric acid spill did not match with the RISP model. Based on the research results, theoretical implications were discussed.

• Journal of the Korean Society for Library and Information Science
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• v.32 no.2
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• pp.189-209
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• 1998

The purpose of this study is to verify the difference of behavioral characteristics between the primary and secondary search, the influence of the primary search results on Online databases. Data is collected by surveying the professional and end-user searchers in 33 online information service centers. 262 valid responses out of 308 questionaire are analyzed by the t-test, ANOVA, $\chi^2-test$ using SAS program. The major findings are as follows : (1) Preparatory searches(the levels of expectation, the degree of question comprehension), search results(the number of output documents, precision ratio, recall ratio, degree of satisfaction) are significantly different between the primary and secondary searches on Online Databases. But the number of search terms, Boolean logics, files, systems, relevant documents are not significantly different between the primary and secondary searches. (2) The results of the primary search affect the secondary searches. The number of output documents in the primary search affect the modification of search strategies and objects in the secondary searches. The number of relevant documents affect the variation of search scopes in the secondary searches. The precision ratio affect the change of search strategies and scopes in the secondary searches.

• 한국경영정보학회:학술대회논문집
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• 2008.06a
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• pp.647-651
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• 2008

본 연구는 ICT 기술 중심의 연구개발조직에서 기술혁신의 인프라로서 전략기술로드맵(STRM)의 추진에 있어 주요한 성공요인을 고찰하는 것을 목적으로 수행되었다. 이를 위하여 전략기술로드맵의 개념과 특성을 밝히고 실제 기술개발조직에서 추진되어지는 프로세스와 실제 추진 성공요인을 조직역량이론을 중심으로 고찰하였다. 이러한 이론적 연구를 통하여 전략기술로드맵 추진성공에 영향을 미치는 주요 명제들을 도출하였다. 이를 통해 기술혁신을 추구하는 연구개발조직에서는 전략기술로드맵 성공을 위한 상위경영층의 지원, 핵심기술도출 및 로드맵 추진의 적절성 및 기술정보활용을 위한 조직내 역량을 강화시켜야 함을 고찰할 수 있었다. 전략기술로드맵(STRM) 추진시 성공을 위한 제반 조직적 요인을 고찰한 본 연구는 향후 기술역량의 지속적 탐색과 활용 및 기술혁신의 인프라로서 기술로드맵을 추진하려는 연구개발 조직에게 큰 함의를 제공할 수 있을 것으로 기대된다.

• Journal of Korean Library and Information Science Society
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• v.54 no.1
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• pp.143-165
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• 2023

This study aims to propose a scaffolding strategy that can be applied to the information search process by using Kuhlthau's ISP model, which presented a design and implementation strategy for the mediation role in the learning process. To this end, the relevant literature was reviewed to categorize scaffolding strategies, and impressions were collected from the students surveys after providing 150 middle school students in the Daejeon area with the project class to which the scaffolding strategy based on the ISP model was applied. The collected data were processed into a form suitable for analysis through data preprocessing for word frequencies to be extracted, and topic analysis was performed using STM (Structural Topic Modeling). First, after determining the optimal number of topics and extracting topics for each stage of the ISP model, the extracted topics were classified into three types: cognitive domain-macro perspective, cognitive domain-micro perspective, and emotional domain perspective. In this process, we focused on cognitive verbs and emotional verbs among words extracted through text mining, and presented a scaffolding strategy model related to each topic by reviewing representative document cases. Based on the results of this study, if an appropriate scaffolding strategy is provided at the ISP model stage, a positive effect on learners' self-directed task solving can be expected.

• Proceedings of the Korea Association of Information Systems Conference
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• 2003.11a
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• pp.215-226
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• 2003

• The KIPS Transactions:PartB
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• v.16B no.4
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• pp.319-326
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• 2009

PSO(Particle Swarm Optimization) is an optimization algorithm in which simple particles search an optimal solution using shared information acquired through their own experiences. PSO applications are so numerous and diverse. Lots of researches have been made mainly on the parameter settings, topology, particle's movement in order to achieve fast convergence to proper regions of search space for optimization. In standard PSO, since each particle uses only information of its and best neighbor, swarm does not explore diverse regions and intended to premature to local optima. In this paper, we propose a new particle's movement strategy in order to explore diverse regions of search space. The strategy is that each particle moves according to relative weights of several better neighbors. The strategy of exploring diverse regions is effective and produces less local optimizations and accelerating of the optimization speed and higher success rates than standard PSO. Also, in order to raise success rates, we propose a strategy for checking whether swarm falls into local optimum. The new PSO algorithm with these two strategies shows the improvement in the search speed and success rate in the test of benchmark functions.

• Journal of Global Scholars of Marketing Science
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• v.14
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• pp.17-37
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• 2004

This research is speak that is tendencious in comprehension of external consumer information search behavior using on-line external information source to consumers who use on-line that is used as corporations' main strategic means. That is, classify consumer groups which was atomized according to type inflict consumer's information search knowledge level and shopping value study which use on-line, and decision factors of information search that these groups can influence a difference or each group which use information sources grasped what it is. Result that investigate information search knowledge level difference about study finding on-line information source utilization used mainly portal site, comparison site, auction site. And, utilization shopping pursuit value group used information source by portal site, auction site, niche shopping mall site and hedonic shopping pursuit value group used information source by portal site, auction site, shopping mall site. It confirmed that all variables(i.e. consumer-based variable and web site-based variable) are influencing variously in on-line external information search types. Finally, we proposed different way to erect strategic model about consumers that use on-line with study finding that see.

• Journal of the Korean Society for information Management
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• v.40 no.4
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• pp.95-121
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• 2023

This study aims to explore the combinations of services and technologies for academic libraries to use based on librarians' perception and establish effective service strategies accordingly. The literature review facilitated an understanding of Fourth Industrial Revolution technologies impacting the libraries. We discovered how technologies are transforming library services. We analyzed the academic library services to categorize their service structure. The survey revealed the necessity of introducing technology for each service category and the appropriate automation levels of services based on the perception of librarians. The survey results identified nine prioritized combinations of academic library services and technologies. Based on the analysis, we proposed the service-technology strategies for each category. This study has significance in exploring the potential for introducing and utilizing new technologies to enhance academic library services and exploring ways to combine services and technologies based on the common opinion of librarians.