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해외직접투자 동기, 글로벌 조정 및 진입유형을 설명하는 새로운 이론: 한국기업의 실증분석을 위한 불균형 접근법
문희창 서울대학교 국제학연구소 2002 국제지역연구 Vol.11 No.4
Traditional theories of foreign direct investment(FDI) start with a premise that a firm should have a significant ownership advantage for going abroad. Recently, we interviewed Korean firms overseas subsidiaries and found some interesting cases of FDI that cannot be explained by the traditional approach. This article introduces a new theory, an imbalance approach, which deals with both advantages and disadvantages of a firms asset portfolio, and demonstrates that this new approach is useful in explaining the new FDI motivations of Korean firms. This approach is also useful in explaining other related issues such as global coordination and entry modes. An empirical analysis generally supports this new approach. This article provides a theoretical background and empirical findings for the role of foreign subsidiary, not just as a profit center, but also as a strategic base for enhancing a firm's global competitiveness. 해외직접투자(FDI)에 대한 기존의 이론들은 기업들이 해외활동을 하기 위해서는 중요한 기업 특유의 우위요소를 보유해야 한다는 명제로부터 출발한다. 그런데 최근 한국 기업의 해외 자회사와 인터뷰를 통해 기존의 이론으로 설명할 수 없는 흥미로운 해외직접투자 사례들을 발견하였다. 본 논문은 기업의 자산 포트폴리오의 우위요소와 열위요소를 동시에 다루는 불균형 이론을 제시하고자 한다. 또한 이 새로운 이론이 한국 기업이 행하는 새로운 형태의 해외직접투자의 동기를 설명하는데 유용하다는 점을 보이고자 한다. 불균형 이론은 글로벌 조정이나 진입 방식과 같은 연관 주제를 설명하는데 있어서도 유용하다. 본 논문의 실증 연구결과는 전반적으로 이 이론을 뒷받침한다. 본 논문은 이익 센터로서 뿐만 아니라 기업의 국제 경쟁력을 향상시키기 위한 전략적 기반으로서의 해외자회사 역할에 대한 이론적 배경을 제시하고 이에 대한 실증적 사례를 보여준다.
JAUS를 따른 무인 시스템 제어를 위한 peer-to-peer 데이터 통신
문희창(Hee-Chang Moon),우훈제(Hoon-Je Woo),김정하(Jung-Ha Kim) 한국자동차공학회 2006 한국자동차공학회 Symposium Vol.- No.-
This paper deals with the peer-to-peer (P2P) data communication to connect each of distributed levels of developed unmanned ground vehicle (UGV) according to the JAUS protocol. Each of distributed levels of the JAUS protocol divides into a system, some of subsystems, nodes, and components/instances, each of which may be independent or interdependence. Each of levels must require high performance to process data with high speed. Therefore, each of distributed independent levels send data to another level and then it has to be able to process the received data in other levels, Then, P2P communication has to control data flow of distributed levels. In this research, we explain each of levels of the JAUS and P2P structure among the levels using our developed UGV.
무인자동차의 주행을 위한 국부지도 생성방법에 대한 연구
문희창(HeeChang Moon),이홍철(HongChul Lee),김정하(JungHa Kim) 한국자동차공학회 2006 한국자동차공학회 Symposium Vol.- No.-
This paper deals with local map building method using obstacle detecting sensors such as laser scanner, camera, and ultra sonic sensor for unmanned ground vehicle(UGV). The UGV is consists of several systems. For example navigation system, obstacle detecting system, vehicle control system and arbiter system. Among the systems, obstacle detecting system is to detect obstacles in front of the vehicle using obstacle detecting sensors. These sensors generate various types of output data. So fusing sensors data is vary important. The local map is good for adding the sensors data. In this paper, we introduce our UGV systems and local map building method for sensor data fusing.
레이저스캐너를 이용한 무인자동차의 장애물인식 시스템 설계
문희창(Hee Chang Moon),손영진(Young Jin Son),김정하(Jung Ha Kim) 제어로봇시스템학회 2008 제어·로봇·시스템학회 논문지 Vol.14 No.8
This paper describes an obstacle detecting system of an unmanned ground vehicle (DGV). The unmanned ground vehicle is consists of several systems such as vehicle control system, navigation system, obstacle detecting system and integration system. Among these systems, the obstacle detecting system is a driving assistance system of UGV. Through the UGV is driving, the system detects obstacles such as cars, human, tree, curb and hills and then send information of obstacles position to integration system for safety driving. In this research, the obstacle detecting system is composed of 5 laser scanners and develop algorithms of detecting obstacles, curb, uphill and downhill road.
무인자율주행차량의 시스템 아키텍처 및 통신 프로토콜 설계
문희창(Hee Chang Moon),우훈제(Hoon Je Woo),김정하(Jung Ha Kim) 제어로봇시스템학회 2008 제어·로봇·시스템학회 논문지 Vol.14 No.9
This paper deals with the peer-to-peer data communication to connect each of distributed levels of developed unmanned system according to the JAUS. The JAUS is to support the acquisition of unmanned system by providing a mechanism for reducing system life-cycle costs. Each of distributed levels of the JAUS protocol divides into a system, some of subsystems, nodes and components/instances, each of which may be independent or interdependence. We have to distribute each of the levels because high performance is supported in order to create several sub-processor computing data in one processor with high CPU speed performance. To complement such disadvantage, we must think the concept that a distributed processing agrees with separating each of levels from the JAUS protocol. Therefore, each of distributed independent levels send data to another level and then it has to be able to process the received data in other levels. So, peer-to-peer communication has to control a data flow of distributed levels. In this research, we explain each of levels of the JAUS and peer-to-peer communication structure among the levels using our developed unmanned ground vehicle.
문희창(Hee Chang Moon),손영진(Young Jin Son),김정하(Jung Ha Kim) 제어로봇시스템학회 2008 제어·로봇·시스템학회 논문지 Vol.14 No.8
This paper describes a vehicle low speed driving assistant (VLDA) system that is composed of laser scanner. This vehicle is designed for following lead vehicle (LV) without driver’s operation. The system is made up several component systems that are based on unmanned ground vehicle (UGV). Each component system is applied to use advanced safety vehicle developed to complete UGV system. VLDA system was divided into vehicle control system and obstacle detecting system. The obstacle detecting system calculate distance and angle of LV and transmit these data to vehicle control system using front, left and right laser scanners. Vehicle control system makes vehicle control values such as steering angle, acceleration and brake position and control vehicle’s movement with steering, acceleration and brake actuators. In this research, we designed VLDA system like as low speed cruise control system and test it on real road environments.
무인 자율 주행 차량 시스템 설계 및 제어에 관한 연구
문희창(Hee-Chang Moon),박명욱(Myung-Wook Park),김정하(Jung-Ha Kim) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.5
The research presented covers the design and control method of unmanned ground vehicle (UGV). An electric vehicle is used and is driven by DC motor. The power system on the UGV has been adjusted and actuators have been installed for steering and brake automation. A toggle switch is implemented to easily switch between manual and autonomous states. The UGV state is monitored by a velocity sensor, as well as steering and brake position sensors. An emergency stop device was designed and installed to quickly and safely stop the UGV. Different control methods, including the PID controller, were studied for improved steering responsiveness, and results were confirmed through experimentation. Satisfactory performance was achieved and several possible areas of future research have arisen.