• 산업경영시스템학회지
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• 제46권4호
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• pp.238-245
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• 2023

As technologies have been more quickly developed in this 4th Industry Revolution era, their application to defense industry has been also growing. With these much advanced technologies, we attempt to use Manned-Unmanned Teaming systems in various military operations. In this study, we consider the Location-Routing Problem for reconnaissance surveillance missions of the maritime manned-unmanned surface vehicles. As a solution technique, the two-phase method is presented. In the first location phase, the p-median problem is solved to determine which nodes are used as the seeds for the manned vehicles using Lagrangian relaxation with the subgradient method. In the second routing phase, using the results obtained from the location phase, the Vehicle Routing Problems are solved to determine the search routes of the unmanned vehicles by applying the Location Based Heuristic. For three network data sets, computational experiments are conducted to show the performance of the proposed two-phase method.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.915-919
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• 2005

It is materialized an unmanned vehicle system as a part of Intelligent Transportation System (ITS) which is a fundamental constituent for unmanned vehicle. Remote control system, monitoring system and remote operating system which are consisted of unmanned vehicle system. Network program by TCP/IP socket, and real-time control & operating controlled by servo-motors from a remote place, those are used to verify safety and stability of the unmanned vehicle system in this research. This unmanned vehicle is divided into two major sections which are an unmanned vehicle part and control station part. The server PC is installed on the unmanned vehicle and a client PC is installed at a remote place, which can control the u manned vehicle. In this research work, main theme is that we experimented and tested to check the speed and utilization of the wireless LAN communication.

• 한국정보시스템학회지:정보시스템연구
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• 제31권1호
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• pp.91-113
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• 2022

Purpose In the era of the 4th industrial revolution, the introduction of unmanned stores is rapidly spreading throughout the entire distribution market. Unmanned stores are stores where consumers purchase products on their own through machines and not through contact with people. As there are no managers in unmanned stores, Servicescape is expected to have many effects on the purchasing behavior of consumers. Therefore, this study aims to observe the effect of Servicescape on consumer behavioral intentions. Design/methodology/approach This study wanted to look at the relationships among Servicescape in unmanned stores, utilitarian values, hedonic values, satisfaction, and continuous use intentions. The collected(n=211) from individuals who have experienced in using unmanned stores was analyzed with SmartPLS2.0 to test proposed hypotheses. Findings The research results are as follows. First, it was shown that the space, convenience, and comfortableness of Servicescape have positive effects on utilitarian value, and cleanliness did not have significant effects on utilitarian value. Second, it was shown that space and comfortableness had positive effects on hedonic value, and convenience and cleanliness did not have significant effects on hedonic value. Lastly, it was shown that utilitarian values and hedonic values have positive effects on satisfaction, and satisfaction was found to have positive effects on continuous use intentions.

• 한국산학기술학회논문지
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• 제20권6호
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• pp.350-361
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• 2019

지능화 혁명을 기반으로 한 4차 산업혁명은 사회 전반에 걸쳐 혁신을 이루고 있으며, 이는 국방 분야에도 그 영향을 미치고 있다. 기술의 발전에 따라 전쟁의 양상 또한 변화하고 있으며, 특히 4차 산업혁명 기술을 기반으로 국방 무인체계 분야와 관련된 핵심기술의 연구개발, 인프라 조성 등 다각적인 전략 수립이 이루어지고 있다. 이에 본 논문에서는 무기체계 개발에 앞서 확보되어야 할 핵심기술에 대해 미래 해양 무인체계를 중심으로 연구개발 소요제기시 우선적으로 고려될 수 있는 해양 무인체계 분야의 요구기술을 선정하는 연구를 수행하였다. 먼저 해양 무인체계 분야의 핵심기술 우선순위 결정모형을 수립하고, 국방기술 표준분류 등 관련 문헌에서 무인로봇 분야 기술을 재분류 및 통합하여 무인체계 개발시 중점 고려되어야 할 기술분야 9개를 식별하였다. 실증분석을 위해 무기체계 전력업무를 수행하는 전문가 12명을 대상으로 설문조사를 실시하여 해양 무인체계 개발시 우선적으로 개발이 요구되는 기술분야의 중요도를 분석하였다. 결과적으로 소요군 및 연구기관, 업체 등에서 제시한 핵심기술을 선정함에 있어 우선적으로 고려되어야 할 핵심기술 분야를 식별할 수 있었으며 이는 미래 관점에서 해양 무인체계를 발전시킬 수 있는 기술로드맵 구축에 기여할 수 있을 것으로 판단된다.

• 한국군사과학기술학회지
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• 제20권5호
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• pp.633-638
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• 2017

The small unmanned robot developed in this paper can perform tasks such as surveillance and reconnaissance in the battle field. The noise generated during the operation of the robot may expose the operation area. Therefore, in this study, we developed a method to quantitatively measure the noise of the developed small unmanned ground robot. The criteria for noise measurement in indoor and outdoor are presented. It was used for statistical verification method to verify the reliability of the developed noise measurement method. The noise was measured at different places, and the correlation was analyzed. Thus, we proposed a method to predict the noise level in the operation area where the robot is operated by the noise test data measured during the development process.

• 한국지능시스템학회논문지
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• 제22권5호
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• pp.597-602
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• 2012

본 논문에서는 유인과 무인주행이 가능한 전기자동차용 수동 및 자동 조향장치를 제안한다. 기존의 엔진방식의 자동차에 사용되는 자동 조향시스템인 EPS, MDPS는 주행 중에 과부하시엔 핸들 잠김 현상이 발생하는 문제점이 있어 유무인 전기자동차에 적용하는 것은 한계가 있다. 제안하는 수동 및 자동 조향장치는 전자클러치와 풀리를 이용함으로써 수동과 자동변환이 가능하도록 조향 메커니즘을 설계하였다. 제안한 조향장치의 성능을 실험하기 위해 실험용 전기자동차를 제작하고 조향성능을 실험하였다. 실험을 통해 제안하는 수동 및 자동 조향장치는 유무인 전기자동차에 유용함을 확인하였다.

• 항공우주시스템공학회지
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• 제15권4호
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• pp.64-74
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• 2021

Unmanned Aircraft Systems (UAS) are rapidly emerging not only as a key military power, such as surveillance and reconnaissance for military purposes but also as a new air transportation means in the form of Urban Air Mobility (UAM). Currently, airworthiness certification is carried out focused on the verification of technical standards for flight safety suitability of aircraft design in accordance with the Military Aircraft Flight Safety Certification Act and does not employ the model for operational risk assessment for mission areas and airspace. In this study, in order to evaluate the risk of the mission area from the perspective of the UAS operator, a risk assessment simulation has been conducted by applying the Specific Operations Risk Assessment (SORA) model to the operating environment of the Korean military UAS. Also, the validity of the SORA model has been verified through the analysis of simulation results, and a new application plan for airworthiness certification of the military unmanned aerial system has been presented.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.586-589
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• 2005

Recently, the applications of unmanned system are steadily increasing. Unmanned automatic system is suitable for routine mission such as reconnaissance, environment monitoring, resource conservation and investigation. Especially, for the ocean environmental probe mission, many ocean engineers had scoped with the routine and even risky works. The unmanned surface vessel designed for sea probes can replace the periodic and routine missions such as water sampling, temperature and salinity measuring, etc. In this paper, an unmanned surface vessel was designed for ocean environmental probe missions. A classical and an adaptive fuzzy control system were designed and tested for the unmanned surface vessel. The design methodologies and performance of the surface vessel and fuzzy control algorithm were illustrated and verified with this unmanned vessel system designed for sea probes.

• International Journal of Internet, Broadcasting and Communication
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• 제14권3호
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• pp.258-269
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• 2022

In these days, innovative functions are required to unmanned parcel delivery lockers. As non-face-to-face transactions become the center due to the recent COVID-19 pandemic, many problem occurs in society such as theft crimes and lack of loading space. Therefore, New concept storage device is developed in korea. It has the functions that minimizes empty spaces by using the internal transport device to enable efficient space loading and refrigerate goods such as foods. In order to systematically approach the system design of the unmanned parcel delivery lockers which is the new function is applied, We applied model-based system engineering to improve the development efficiency and use a system modeling language to express the system. We conducted interworking research of CAD data including system modeling and design data. it is expected that this method will increase the effective development efficiency such as maintenance traceability and reduction of development period and cost.

• 시스템엔지니어링학술지
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• 제18권1호
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• pp.58-65
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• 2022

An application case of systems engineering (SE) processes for the small unmanned aerial vehicle (UAV) development project, which was funded by the Korean government during June 2017 ~ August 2020, is briefly presented in this paper. From the beginning to the end of the project, SE processes had been applied and managed by simple and intuitive aspects for the small/medium business companies joined with insufficient experiences of SE. And the specific considerations of the processes were focused to the missions of disaster and public safety purposes required from the government, such as identification, patrol, fire, rescue, etc. As a result, the project applied by the tailored SE processes had been rated of a good and higher accomplishment on the final evaluation, and then the related several programs were prepared successively for the other opportunities.