• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.477-487
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• 2015

The purposes of this study was to analyze the relative efficiency of nineteen Jeju Self-Governing Schools (JSGS) in elementary level by using DEA (Data Envelopment Analysis). Major results from the study are as follows: First, there were significant differences on the relative efficiency among JSGS, which might come from operation factors rather than from size factors of JSGS. Second, to improve the relative inefficiency of JSGS, it is quite suggestive that satisfaction of both students and parents would be developed, and that the quality of educational programs should be developed by analyzing especially parents characteristics and reflecting their needs. Lastly, the perspective of efficiency, which is a measure of the optimal usage of available school resources, should be adopted and used for school assessment in order to develop the relative efficiency of JSGS.

• Proceedings of the Korea Database Society Conference
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• 1999.06a
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• pp.347-350
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• 1999

자율무인잠수정은 자율운항을 위해서 자동화된 제어시스템이 필요하다. 제어시스템은 기능적 측면에서 임무계획단계(mission planning level), 임무제어단계(mission control level), 선체제어단계(vehicle control level)로 구분한다. 자율무인잠수정의 효과적인 임무 수행을 위해서는 임무제어단계의 운행 경로 설정과 제어가 중요하다. 자율무인잠수정은 잠수정의 주변환경을 추상화한 후 탐색기법을 이용하여 경로를 설정한다. 이때 검색기법의 효율적 적용을 위해서는 효과적으로 추상화된 탐색모형이 필요하다. 대표적인 탐색모형으로는 3차원 격자절대좌표 모형(3-dimensional grid unit coordinate model)(1)을 들 수 있다. 그러나 이 모형은 불필요한 동작의 반복, 이동 격자에 따른 비일관성과 같은 취약점이 존재한다. 본 연구에서는 이 모형의 취약점을 개선하기 위해서 자율무인잠수정의 위치 기반 상대적 격자좌표 모형(relative grid unit coordinate model based on AUV state)을 제안한다.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 1999.03a
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• pp.347-350
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• 1999

자율무인잠수정은 자율운항을 위해서 자동화된 제어시스템이 필요하다. 제어시스템은 기능적 측면에서 임무계획단계(mission planning level), 임무제어단계(mission control level), 선체제어단계(vehicle control level)로 구분한다. 자율무인잠수정의 효과적인 임무 수행을 위해서는 임무제어단계의 운행 경로 설정과 제어가 중요하다. 자율무인잠수정은 잠수정의 주변환경을 추상화한 후 탐색기법을 이용하여 경로를 설정한다. 이때 검색기법의 효율적 적용을 위해서는 효과적으로 추상화된 탐색모형이 필요하다. 대표적인 탐색모형으로는 3차원 격자절대좌표 모형(3-dimensional grid unit coordinate model)[1]을 들 수 있다. 그러나 이 모형은 불필요한 동작의 반복, 이동 격자에 따른 비일관성과 같은 취약점이 존재한다. 본 연구에서는 이 모형의 취약점을 개선하기 위해서 자유무인잠수정의 위치 기반 상대적 격자좌표 모형(relative grid unit coordinate model based on AUV state)을 제안한다.

• The Journal of Information Systems
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• v.6 no.2
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• pp.1-28
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• 1997

정보시스템 기능이 아웃소싱이 정보시스템 효율과 효과성을 향상시킬 수 있는 전 략으로 고려됨에 따라 소싱유형의 결정요인을 식별하는 것은 중요하다고 할 수 있다. 본 연 구는 은행 산업에 있어서 데이터 처리 서비스의 소싱결정에 영향을 주는 요인을 조사하였 다. 아웃소싱을 관리적 혁신으로 볼 때, 혁신특성으로서 상대적 이점과 위험성이 소싱 유형 의 중요한 결정요인으로 제시된다. 미국의 1,000개 은행을 대상으로 한 현장연구(field survey)의 결과는 상대적 이점과 보안위험이 소싱유형 및 아웃소싱 선호도와 유의한 관계가 있다는 것을 보여주었다. 또한 대규모 은행이 소규모 은행보다 아웃소싱에 대해 더 큰 자율 성 위험을 가지고 있는 것으로 나타났다. 그러나 자율성 위험과 두 종속 변수와의 관계에 대해서는 비일관적인 결과가 나타났고, 정보시스템 기능의 중요성과 소싱유형 및 선호도와 의 관계, 조직규모와 상대적 이점과의 관계를 연구결과가 충분히 지지하지 못하고 있다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2015.11a
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• pp.789-797
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• 2015

한국의 출연(연)은 과학기술 기반 창조경제 실현을 위한 선도적 탈추격 R&D 주체로서의 출연(연)의 역할모델 재정립을 요구받고 있으며, 이는 자율과 책무에 기반한 지속가능한 R&D 체제로의 패러다임 전환을 수반한다. 본 연구는 공공연구기관의 자율성을 정의하고, 자율성을 구성하는 요인을 기관장 선임 및 거버넌스, 연구전략 및 목표관리, 예산, 인력, 그리고 평가로 구분하고, Autonomy Regime on Wheel (ARoW) 모델을 통하여 제시하였다. 자율성을 구성하는 각 요인에 대한 핵심 질의를 정의하고, 한국과 선진공공연구기관의 현황을 파악하여 벤치마킹 분석을 수행하였다. 분석 대상 선진 공공연구기관은 독일, 영국, 미국의 기관들로 선정하였으며, 특히 연구회 구조의 유사성 및 각 연구회 간 연구분야 및 임무의 균형이 조화롭게 유지되고 있는 독일의 4대 연구회를 중심으로 연구를 진행하였다. 연구를 위하여 분석대상 기관의 홈페이지를 포함한 국내?외 문헌조사 및 독일, 영국, 미국의 현지조사 과정을 거쳤으며, 이와 함께 국내?외 관련 전문가들에 대한 인터뷰를 진행하였다. 한국 및 선진 공공연구기관의 자율성 현황을 분석한 결과, 자율성을 구성하는 요인들에 대하여 전반적으로 한국의 실질적 자율성이 상대적으로 약한 것으로 나타났다. 본 연구는 공공연구기관의 자율성을 정의 및 분석한 최초의 학술적 연구로서, 향후 자율과 책무에 기반한 지속가능한 출연(연) 발전을 위한 전략 수립에 기반자료로 활용이 가능하다는 점에 그 의의가 존재한다.

• Aerospace Engineering and Technology
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• v.13 no.1
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• pp.37-43
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• 2014

The ground station which operates the LEO satellite performs monitoring state of health of the satellite, sending the commands for the imaging mission of receiving the images during about 10 minutes of contact time. To finish the planned procedure in limited contact time, specific level of autonomy is applied in the satellite and the ground system. For example, the attitude and orbit control logic has high level of autonomy because it must be operated alone for long period without operator intervention. On the other hand, the fault management logic has relatively low level of autonomy because of that failure detection and safing operation are performed on-board, whereas failure identification and recovery are on-ground operation. The level of autonomy of the satellite affects also the ground operation. The command set for mission operation is generated by ground system. If the satellite has higher level of autonomy, some of operation currently done on-ground can be performed on-board, so the ground operation can be simplified. In this paper, we discuss the level of autonomy and propose a concept for improving the level of autonomy of an LEO satellite.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.51-56
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• 2020

This study examines the strategies employed by GM, who experienced bankruptcy in 2008. Specifically, we explore the autonomous driving-related technologies and execution, which GM began developing later than other car manufacturing companies. This study found that GM implemented aggressive M&A in search of vertical industrial integration for the development and production of autonomous vehicles. GM selected candidate firms to complement its technological gaps for the development and implementation of the autonomous vehicle. Secondly, GM achieved executive capacity by attempting to build a vertical integration in the wider scope of components, solution, service, and sales. Thirdly, the consistent governmental support and policies, such as the connected car project, M-City, and NCHRP Program expedited the development process. This study provides practical and policy implications for Korean companies and policymakers related to the automotive industry.

• Korean Educational Research Journal
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• v.40 no.1
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• pp.1-16
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• 2019

The purpose of this study is to explore the relationship between parental attitudes, teachers' autonomy support as perceived by high school students, and the self-directed learning abilities of high school students. A total of 341 high school students from South Korea participated in the study. A survey instrument was used to measure parental attitudes, teacher autonomy support, and students' self-directed learning ability. The results of the study are as follows. First, the rearing attitudes of parents were perceived by the participants as oriented more toward being attainable and relatively less self-directed. There were no significant differences between male and female students, though male students were more likely to perceive their parents' attitudes as more attainable-oriented. The results also show that, in terms of self-directed learning skills among high school students, the more goal-oriented, compassionate, and autonomous the parental attitudes are, the likelier are students to have developed self-directed learning skills. Second, the male students were more aware of the autonomy support of teachers than were the female students. This shows that the results have significant predictive power over the self-directed learning ability among high school students. Accordingly, the perception of autonomy support by teachers affects the development of self-directed learning among students. We can therefore conclude that self-directed learning skills develop most effectively in students who are supported by their teachers.

• Journal of Navigation and Port Research
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• v.45 no.1
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• pp.9-15
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• 2021

According to IMO, MASS is defined as a vessel operated at various levels independent of human interference. The safety navigation support service for MASS is designed to improve the safety and efficiency of MASS by developing public services on shore for ship arrivals/departures and for cargo handling. The safety navigation support service consists of a total of six types of services: autonomous operation, berthing/unberthing/mooring, cargo handling and ship arrival/departure service, PSC inspection, condition monitoring, and accident response support services. In order to support accident response service, the relative importance of a bridge navigational equipment was assessed by stratifying the navigation system to provide safe and efficient support services by objective judgment through specific and quantitative methods using AHP, one of decision-making methods used by an expert group. The survey was conducted by dividing the bridge navigational equipment into depth, location, and speed information. As a result of applying the AHP method, the importance of depth, location, and speed information was assessed. The relative importance of each equipment for providing location information was also assessed in order of Radar, DGPS, ECDIS, Gyro compass, Autopilot, and AIS. This was similar to survey results on the utilization of each operator's preference and its impact on marine accidents.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.20 no.6
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• pp.299-312
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• 2021

Autonomous vehicles using V2X can drive safely information on areas outside the sensor coverage of autonomous vehicles conventional autonomous vehicles. As V2X technology has emerged as a key component of autonomous vehicles, research on V2X security is actively underway research on risk analysis due to failure of V2X communication is insufficient. In this paper, the service scenario and function of autonomous driving system V2X were derived by presenting the intersection scenario of the autonomous vehicle, the malfunction was defined by analyzing the hazard of V2X. he ISO26262 Part3 process was used to analyze the risk of malfunction of autonomous vehicle V2X. In addition, a fault injection scenario was presented to verify the fail-safe of the simulation-based intersection scenario.