• Journal of Information Processing Systems
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• 제13권5호
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• pp.1243-1258
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• 2017

A new medical materials scheduling system and its modeling method for the complex rescue are presented. Different from other similar system, first both the BeiDou Satellite Communication System (BSCS) and the Special Fiber-optic Communication Network (SFCN) are used to collect the rescue requirements and the location information of disaster areas. Then all these messages will be displayed in a special medical software terminal. After that the bipartite graph models are utilized to compute the optimal scheduling of medical materials. Finally, all these results will be transmitted back by the BSCS and the SFCN again to implement a fast guidance of medical rescue. The sole drug scheduling issue, the multiple drugs scheduling issue, and the backup-scheme selection issue are all utilized: the Kuhn-Munkres algorithm is used to realize the optimal matching of sole drug scheduling issue, the spectral clustering-based method is employed to calculate the optimal distribution of multiple drugs scheduling issue, and the similarity metric of neighboring matrix is utilized to realize the estimation of backup-scheme selection issue of medical materials. Many simulation analysis experiments and applications have proved the correctness of proposed technique and system.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2014년도 춘계 종합학술대회 논문집
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• pp.195-196
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• 2014

This paper provides emerging technology issue and institutes of LED fusion industry based on the efficient quantitative analysis of a large amount of newspaper articles and papers for the decision-making of new business planning and core strategy. In addition, market opportunities and market entering strategies of main LED fusion industries are proposed. In the future, it is required to analyze and complement the quantitative analysis result by LED fusion industry experts and to build emerging issue database.

• 한국콘텐츠학회논문지
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• 제20권2호
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• pp.240-247
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• 2020

빠르게 변화하는 온라인상의 정보 흐름과 트랜드를 이해하고 IT기술 환경변화에 대응하기 위해서 필요한 선제적 제도 마련을 위한 한 가지 방안으로 빅데이터를 이용하고자 하는 노력이 최근 들어 더욱 가속화 되고 있다. 논문에서는 인공지능 기반의 빅데이터 처리를 통한 이슈 분석 시스템의 개발과 연구를 통해 빅데이터 처리를 위한 새로운 기술의 가능성을 확인하고자 한다. 이를 위해, 고속의 병렬처리가 가능해진 인공신경망을 사용, 의미 추론 및 패턴분석을 위한 처리 기법을 제안하고 구현을 통해 제안하는 방법에 대한 빅데이터 처리의 적합성을 알아본다. 정보보안의 중요성을 감안하여, 인공 신경망을 이용한 이슈 분석 시스템을 최근의 보안 이슈 분석에 활용해봄으로써 제안하는 방식이 실제 빅데이터 처리에 유용하게 활용 될 수 있음을 검증한다. 실험을 통해서 제안된 방식에 대한 다양한 목적의 빅데이터 처리를 위한 기반 기술로의 활용 가능성을 확인한다.

• 디지털산업정보학회논문지
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• 제11권2호
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• pp.11-22
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• 2015

The almost of Web page has been gathered the personal information(Korean resident registration number, name, cell-phone number, home telephone number, E-mail address, home address, etc.) using the membership and log-in. The all most user of Web page are concerned for gathering of the personal information. I-pin is the alternative means of resident registration number and has been used during the last ten-year period in the internet. The accident of I-pin mass illegal issue was happened by hacker at February, 2015. In this paper, we analysis the problems of I-pin system about I-pin mass illegal issue accident and propose a improvement method of it. First, I-pin issue must be processed by the off-line of face certification in spite of user's inconvenience. Second, I-pin use must be made up through second certification of password or OTP. The third, the notification of I-pin use must be sent to the user by the text messaging service of cell-phone or the E-mail. The forth, I-pin must be used an alternative means of Korean resident registration number in Internet. The methods can reduce the problems of I-pin system.

• 대한공간정보학회지
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• 제24권2호
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• pp.55-62
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• 2016

Economic and social damages are expected due to yellow dust, occurring every year in Korea and risk of citizens is getting higher accordingly. This study acquired tweet data for yellow dust, which had been the greatest since 2009 for 11 days before and after February 23, 2015. After that, it conducted an analysis on the issue words and association rule. Regarding acquired tweet data, the results of analyzing issue words by using open source R, statistics language shows that 'Mask' was ranked to be the highest, followed by health-related issue words. This indicates that people put the priority in the use of mask for keeping their health, as a result of the occurrence of yellow dust, and subsequently, they showed an interest in diseases, caused by yellow dust. In addition, yellow dust-related diseases, 'cold', 'rhinitis', 'flu', 'asthma', 'bronchitis' were found as issue words, revealing that people had a high concern on the disease occurrence of the respiratory system. The analytical results are judged to reflect the citizen's thought effectively in the process of establishing measures for the prevention of yellow dust.

• 지능정보연구
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• 제22권1호
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• pp.1-18
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• 2016

최근 가용한 텍스트 데이터 자원이 증가함에 따라 방대한 텍스트 분석을 통해 새로운 가치를 창출하고자 하는 수요가 증가하고 있다. 특히 뉴스, 민원, 블로그, SNS 등을 통해 유통되는 글로부터 다양한 이슈를 발굴해내고 이들 이슈의 추이를 분석하는 이슈 트래킹에 대한 연구가 활발하게 이루어지고 있다. 전통적인 이슈 트래킹은 토픽 모델링을 통해 오랜 기간에 걸쳐 지속된 주요 이슈를 발굴한 후, 각 이슈를 구성하는 문서 수의 세부 기간별 분포를 분석하는 방식으로 이루어진다. 하지만 전통적 이슈 트래킹은 각 이슈를 구성하는 내용이 전체 기간에 걸쳐 변화 없이 유지된다는 가정 하에 수행되기 때문에, 다양한 세부 이슈가 서로 영향을 주며 생성, 병합, 분화, 소멸하는 이슈의 동적 변이과정을 나타내지 못한다. 또한 전체 기간에 걸쳐 지속적으로 출현한 키워드만이 이슈 키워드로 도출되기 때문에, 핵실험, 이산가족 등 세부 기간의 분석에서는 매우 상이한 맥락으로 파악되는 구체적인 이슈가 오랜 기간의 분석에서는 북한이라는 큰 이슈에 함몰되어 가려지는 현상이 발생할 수 있다. 본 연구에서는 이러한 한계를 극복하기 위해 각 세부 기간의 문서에 대한 독립적인 분석을 통해 세부 기간별 주요 이슈를 도출한 후, 각 이슈의 유사도에 기반하여 이슈 흐름도를 도출하고자 한다. 또한 각 문서의 카테고리 정보를 활용하여 카테고리간의 이슈 전이 패턴을 분석하고자 한다. 본 논문에서는 총 53,739건의 신문 기사에 제안 방법론을 적용한 실험을 수행하였으며, 이를 통해 전통적인 이슈 트래킹을 통해 발굴한 주요 이슈의 세부 기간별 구성 내용을 살펴볼 수 있을 뿐 아니라, 특정 이슈의 선행 이슈와 후행 이슈를 파악할 수 있음을 확인하였다. 또한 카테고리간 분석을 통해 단방향 전이와 양방향 전이의 흥미로운 패턴을 발견하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.1070-1073
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• 2004

This paper is on the development of a system for removing membranes which is designed exclusively for aircraft components. Membrane removal solution is a most critical issue in aerospace industries since a method of manufacturing the components tends to be changed from fabrication of many parts to cutting into one body. The cutting method inevitably produces a huge amount of chips and then membranes remain in the body. The membrane removal process, as a result, becomes an important issue since it is directly related to productivity. We tried to develop a new machine which will replace the conventional method that uses a handy tool. The machine has been designed for a cutting tool set to follow the unique shape of the slot in the body by a cam follower and cut the membrane automatically. The design has been checked by structural analysis: stress and vibration analysis. A prototype test has been finished. This paper summarizes a series of development process of the deburring machine and some design issues are discussed.

• 교육녹색환경연구
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• 제16권2호
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• pp.1-9
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• 2017

Defect dispute in apartment building has become a debating social issue. The system of defect lawsuit and the conciliation process are applicable to solve defect problems in South Korea. Among various defects, painting work defect is a critical issue because it requires large area works and entails a lot of cost. Accordingly, disputes on work procedure and cost calculation are argued oftenly between residents and housing providers. This study reviewed detailed main issues of painting work and propose relevant systems and standards. In this analysis, the main issues are categorized into pre-works, main work, and others. The most recent cases are compared and analyzed for each issue. After the analysis, following conclusions are obtained, (1) In defect lawsuit system, even though surface treatment work in pre-work step is part of main work, it has been separated and regarded as a separate work. (2) Although the main painting work are not significantly different from two systems, it is still necessary to achieve a consensus to close the gap in the methodology of painting area calculation and determining whole painting or partial painting. (3) In addition, unlike the profit rate of general construction works, that of painting work remained the maximum rate and additional charge rate for works carried out in higher place are different among cases. Therefore, it is determined that establishing consistent standards is urgent.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.12-14
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• 2005

Security problem has been a fundamental issue in the operation and planning of power system. Voltage instability is widely recognized as an important issue of power system blackout. As far as real-time operation is concerned, there is a need for appropriate tools to identify dangerous contingencies, assess security margins and suggest corrective actions. In this paper, we propose the framework design of Voltage Security Assessment(VSA) using QSS(Quasi Steady-State) analysis method in order to implement fast time domain simulation engine as a major part of VSA.

• 대한전기학회논문지:시스템및제어부문D
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• 제53권10호
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• pp.678-689
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• 2004

The major concern of networked control system is network uncertainties such as time delay and data loss. Because these uncertainties may degrade the performance of networked control system and destabilize the entire system. Therefore, the performance and the stability variation of networked control system due to network uncertainties must be considered first in designing networked control system. In particular, the stability analysis of networked control system is most important issue since time delay and data loss can make the overall systems unstable. In this paper, we present a new stability analysis method of networked control system with time delay and data loss, which is impossible in previous works. The proposed method can determine maximum time delay and allowable transmission rate that preserve stability performance of networked control system. The results of the simulation validate effectiveness of our stability analysis method.