• Review of KIISC
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• v.31 no.5
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• pp.55-62
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• 2021

오픈소스 드론 펌웨어는 많은 민간 회사의 드론 OS의 기반이 되는 등 그 활용처가 매우 넓으며, 오픈소스 드론 커뮤니티가 활성화됨에 따라 드론 펌웨어에 대한 일반인들의 접근성 또한 높아졌다. 반면, 오픈소스 드론의 뛰어난 접근성에 반비례하여 취약점에 대한 분석이 미비하다. 이에 본 논문에서는 오픈소스 드론의 동적 분석을 위해 SITL과 HITL 시뮬레이션 환경을 구축하였으며, 구축된 환경을 활용하여 운용상 발생 가능한 제어권 획득 취약점을 연구하였다. 그 결과 드론의 펌웨어를 수정하여 다중 접속 및 제어권 획득을 성공하였으며, 모뎀으로 통신하는 드론의 경우 펌웨어 수정 없이도 다중 접속 및 제어권 탈취가 가능함을 확인하였다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.22 no.2
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• pp.201-220
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• 2011

The library is a social institution that should ensure all users' information access rights. In this study, the concept of universal design is analyzed as a theoretical basis that library Websites should be accessed equitably by all kinds of users, and an evaluation criteria is developed based on the principles of universal design. The Websites of 7 regional central libraries are evaluated with suggested criteria and the ratio of compliance of universal Web design is measured. In the result, the most of the Websites are showed not only high performances on the area of (1) Web accessibility and (2) usability, but low performances on the area of (1) equitable use and (2) flexibility in use.

• Journal of the Korean Geographical Society
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• v.32 no.1
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• pp.69-90
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• 1997

The purposes of this study are to analyze changes in land value and land use of the surrounding area of Konkuk subway station and to suggest the direction of development of that area, which is designated as the micro planning district. KonKuk subway station which is one of nodes in subway line 2 will be completely connected to subway line 7 in 1998. Therefore, as a transfer station, the accessibility for KonKuk station would be increased very much due to the expansion of subway network system. This study analyzes land use types and land values within 200m from the four exits of the station and examines how subway station influences land use types and land values at surrounding areas. Based on the result of the current land use pattern and questionaire related to the direction for the future development of KonKuk subway area, this study suggests the effective and desired direction of development strategies in creating cultural environment appropriate for a university neighborhood.

• Convergence Security Journal
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• v.15 no.5
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• pp.17-22
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• 2015

As financial deregulation policies implemented by the government, electronic financial service is improved but security concerns are increasing and ultimately weaken trust in the financial service. Electronic financial service becomes more and more dependant on the IT platform and the initiatives of access device is also gradually shift to that platform. As biometric sensor is mounted on the smartphone, structural change in the access device is coming. It must be a positive signs in terms of fintech development, in the other side, it can cause many problems such as weakness of regulation and ambiguity of principals of responsibility. So in this paper, by analysing this problem-the shift of service initiative-on the access device I'll propose the best way to the the legal amendments.

• Korean Journal of Logic
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• v.10 no.1
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• pp.65-98
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• 2007

정인교는 그의 최근 논문에서 논리적 귀결 관계에 의해 논리 상항의 의미를 정의함에 있어 통상적인 도입 규칙과 제거 규칙에 의거하는 포퍼의 접근법과, 도입 규칙에만 의존하는 정당화주의적 접근법, 그리고 제거 규칙에만 의존하는 실용주의적 접근법을 구분한 바 있다. 이 글에서는 연언과 선언의 연결어의 경우에는 그 세 가지가 동등하다는 것을, 그리고 조건과 부정의 연결어의 경우에는 제거 규칙에 의거하는 실용주의적 접근법과 포퍼의 접근법이 대등하다는 것을, 타르스키가 처음 확립한 논리적 귀결에 관한 공리적 체계에 의존하여 보일 것이다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.36 no.6
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• pp.1093-1099
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• 2016

Currently, there are 499 metropolitan subway stations in Korea, but there are not many studies on the influence zone of linkage between railway station and public transport. Existing studies have been studied almost in terms of accessibility.. In addition, the existing research on the influence zone of linkage using survey data and statistics, there is a limit to the theoretical basis and analysis techniques. In this paper, we propose a new method to select on the influence zone of linkage, It is a GIS analysis technique using the spatial data of the railway station user as the large data of the traffic card. We applied the GIS analysis technique for select the influence zone of linkage based on the travel time of the network for each public transportation system. As a result, it was confirmed that the influence of the link of 15 minutes on the local bus, 20 minutes on the city bus and 25 minutes on the intercity bus were clearly distinguished according to the difference in network access time.

• Railway Journal
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• v.18 no.6
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• pp.20-22
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• 2015

• Journal of Korean Society of Transportation
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• v.23 no.8 s.86
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• pp.101-111
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• 2005

Various urban transport policies have an effect on urban transit riderships and accessibility. This study reports variations of metropolitan subway travel patterns affected by an enormous change in bus routes and transfer discount fare policy between subway and bus mode conducted by Seoul city in July 1st of 2004. In an effort to see the difference between the before and the after policies, two data sets are prepared. Firstly, on a daily bassis. an origin-destination trip table of May of 2004 is used. Secondly, on a daily bassis, an origin-destination trip table of August-September of 2004 is used as a counter measure. Even if seasonal variation was not considered, Seoul metropolitan area have experienced increasing riderships and accessibility. Finally, the effects of accessibility in spatial interaction model by rall service changes such as random shocks were scrutinized and interpreted in detail.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.5D
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• pp.519-525
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• 2012

This study suggests 3 different elements to develop a rail station-influenced area effectively. Above all, several typical models of TOD (Transit Oriented Development)are suggested. They consider the land use types around a rail station, characteristics of a rail station whether it serves a single line or multiple lines. a method of developing a rail station-influenced area. Secondly, the optimal level of service is suggested for connection facility and access modes. Finally, the allocation criteria of on-and-off facility to provide convenient transfer activity.

• The Journal of the Korea Contents Association
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• v.13 no.4
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• pp.389-398
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• 2013

This study aims to support rational security investment decision making through prioritizing on operational level of management measures strategically, in carrying out industrial security activities. For this, AHP survey is conducted against industrial security professionals and analyzed. Thereafter, the importance and the priority of industrial security management measures are determined. As a result, in a comparison evaluation among the criteria, 'ICT service management' represents the highest weight (0.54). And the sub-criteria could be divided into three groups (Group I, II, III), depending on their importance. The sensitivity analysis results show that if the weight of the criterion, 'ICT systems/networks access control' is doubled, the sub-criteria, 'O/S access control', 'application access control', and 'wired/wireless network access control' are enter into top rank group. In case of the criterion, 'physical/environmental security' is doubled, the sub-criteria, 'protection zoning/access control' and 'disaster prevention on business equipment/counter-terrorism' are enter into the top rank group, 'securing utilities' is enter into the mid rank group.