• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.1
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• pp.12-18
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• 2009

In this paper, for reducing the assembly torque of subminiature plastic barrel and base which are the essential parts of mobile phone camera module, the high-precision system for inspecting the screw shape of core, electrode and injection molding products was developed. For realization of inspection process, the inspection parameters for evaluating the manufacturing quality were selected and the measurement methods of selected parameters were developed. Finally, the inspection system which is possible to be applied to the field were fabricated.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.702-704
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• 2016

1995년부터 2014년까지 약 20년간의 기상청의 대기오염 자료를 바탕으로 이를 3가지의 다른 방법으로 시각화 하였다. 첫 번째는 2014년 주요 광역시의 연중 월별로 대기 오염 물질들을 시각화 하였고, 두 번째는 1995년부터 2014년까지 주요 광역시의 연도별로 대기 오염 물질들을 시각화하였다. 마지막으로 대한민국 지도 위에 2014년 주요 광역시의 대기 오염 물질들을 점 모양으로 시각화하였다. 자료 시각화에는 R의 기본 내장 시각화 함수 plot()과 시각화 패키지 ggplot2, ggmap를 사용하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.6A
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• pp.989-997
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• 2001

인터넷 시장규모 확대 및 이용환경의 급속한 변화로 인하여 인터넷 이용자에 관한 통계와 인터넷 환경에 관한 통계정보 요구는 증대되고 있다. 그러나 인터넷 환경에 관한 통계 정보 중에서 국내 호스트개수, 홈페이지 개수, 국제도메인의 국내 보유 개수 산출 등은 인터넷에 연결하는 이용기관의 보안 강화의 문제점과 전문 지능형 로봇에이전트 시스템의 부재 및 국제도메인 등록기관의 통계 비공개 등으로 국내에서 주기적으로 산출하는데 문제점이 부각되고 있다. 본 논문에서는 인터넷 관련 주요 통계정보의 정확한 산출·제시로 민간의 인터넷 산업에 대한 효과적인 투자 유도를 가능케 하기 위해서 인터넷 주요 통계 산출이 가능한 로봇에이전트 설계 기법을 제안하고 구현한다. 모듈은 로봇에이전트 프로세스 모듈, 통계산출 모듈, 관리 모듈 등으로 구성되었으며, 국내의 호스트 개수, 홈페이지 개수, .com 등 국제도메인의 국내 보유 개수 등을 정기적으로 산출되기 위한 알고리즘과 그 구현결과를 제시한다.

• Journal of KIISE:Computing Practices and Letters
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• v.5 no.3
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• pp.366-374
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• 1999

본 논문에서는 사용자가 세계 주요도시 및 국가의 표준시각 서비스를 보다 손쉽게 이용하고 안내 음성 시간의 증대로 인한 서비스 사용시간의 증가를 최소한으로 줄이기 위하여 ARS 시스템의 절차를 간소화하였다. 그리고 사용자가 보다 빠른 시간 안에 편리하게 세계 주요 국가 및 도시의 표준시각 서비스를 제공하기 위한 방안으로서, 세계 주요도시 표준시각 안내를 위한 국내 시보 및 세계 시보 서비스로의 접근 시나리오 및 해당 안내 멘트를 개발하였다. 또한, 116 세계시보 서비스를 위한 망 구성 및 시스템의 구성요소들을 제시하고 , 통계처리 및 운용자 관리 등을 위한 화면을 구성하여 116 세계 시보 서비스시스템을 구현하였으며 시보에 대한 신뢰성을 평가하기 위하여 개발한 시보 장치의 표준시에 대한 시각차를 분석하여 시각의 정확성을 검증하였다.

• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.339-342
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• 2007

The checklist method is one of the oldest and traditional approaches to the evaluation of library collection. A list of items is checked against the library holdings as the percentage of items held is calculated. This paper reports an evaluation of the KISTI's SciTech journal collection with checklist method. The checklist of SciTech Collection has been made by major STM Databases in STN International.

• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.11-20
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• 2015

Recently, with the market of smart phones slowing down, more attention is paid to wearable devices. It was suggested that 2013 was the "year of the smart watch", due to that the majority of major consumer electronics manufacturers were undertaking work on a smart watch device. However there are still many issues on the interaction and interface design of smart watches. This study reviewed related literatures and evaluated the interaction methods, interface and content design of current smart watches. Based on that, future research directions were proposed. The research results have significant meanings for the guidance of future directions of smart watch.

• Journal of Korean Society of Archives and Records Management
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• v.18 no.3
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• pp.25-47
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• 2018

This study aims to analyze the research trends of oral history research in Korea from 1991 to the present, and to provide basic data on the future direction of oral history research. For these purposes, 439 research articles of domestic oral history researchers from 1991 to 2018 were retrieved by keyword search from Research Information Sharing System (RISS) in Korean Education and Research Information Service (KERIS). The research trends of domestic oral history were analyzed by the volume of periodical research papers, major journals, authors and research funds, research fields and research contents, and international cooperation. Finally, based on the results of the study, the implications were summarized, and direction for follow-up research was provided.

• Journal of Practical Engineering Education
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• v.15 no.1
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• pp.133-142
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• 2023

This study aims to examine how blockchain technology is currently being applied in various fields, as well as the methods and limitations involved in constructing blockchain, and to gauge the potential future of blockchain technology. The success or realization of the technology's applications will depend on how quickly certain technical challenges can be overcome. This paper emphasizes that with the advancement of blockchain technology, when transparency and reliability are improved, it will become a significant force in changing not only the industrial sector but also the economic and political domains. Even if the problem awareness demonstrated by blockchain technology cannot be the most effective solution for solving real-world problems, the framework it presents will provide a significant window for us to understand the problems we face in reality.

• Journal of Elementary Mathematics Education in Korea
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• v.20 no.4
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• pp.627-654
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• 2016

Despite the significance of the measurement strand in elementary mathematics education, it is not easy to teach it meaningfully. This study analyzed instructional methods related to capacity and weight in a series of mathematics textbooks of Korea, Japan, Singapore, and the US. The overall analysis was conducted in the following two aspects: (a) what and when to teach main learning content, and (b) how to teach the learning content tailored to the instructional components specific to the topics of measurement (i.e., the necessity of measurement unit, the meanings of measurement terms, appropriate choice of units, appropriate choice of measurement tools, and the necessity of calculation). The results of this study showed overall similarities in using real-life contexts to teach major topics on capacity and weight as well as emphasizing the relations among measurement units. However, noticeable differences were also analyzed in dealing with the meanings of measurement terms, appropriate choice of units, and appropriate choice of measurement tools. Based on these results, this study provides textbook writers with implications on what to further consider in dealing with capacity and weight.

• Environmental and Resource Economics Review
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• v.25 no.2
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• pp.199-228
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• 2016

This study investigates the effects of economic factors and forest environments on rural residential area development in seven north central states of the U.S. by focusing on the relative importance of not only economic factors but also forest environments by forest type as core drivers of residential development. An empirical model of locations and magnitudes of population changes since 1950 in the north central region is first constructed, and then a panel model with fixed effects for counties is used to explain population growth by age group over time at the county level. Then a set of three equations is estimated for three major age groups, and a cross-sectional model is estimated for the last time period that regresses county-level environmental amenity variables on fixed effects coefficients for counties. Finally, an equation explaining changes in rural housing density is estimated. The results imply that immigrant age is a key factor influencing the choice of the place of residence and that the effects of environmental amenity factors on population growth and subsequent housing development in a county vary according to the age group.