• Journal of Fisheries and Marine Sciences Education
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• v.23 no.2
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• pp.221-233
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• 2011

The purpose of this research was made to suggest the improvement for problems of indication subject of Fisheries & Maritime High School teacher's certificate issued by the operation of the 7th national curriculum in 2000. After analyzing the integrated indication subjects related with fisheries & Maritime high school, among the middle school teacher's 24 subjects of industrial world, the problems and improvements can be arranged as followed. Firstly, the subjects of fisheries & Maritime high school teacher's certificates are fishing industry, aquiculture, sailing, engine and freezing and new subjects are ocean shipping and ocean logistics. Because the teacher's certificate was changed to integrated indication subjects, there were problems of teacher cultivation, teacher hiring, etc. So, in the actual field of school, teacher cultivating university and related department are necessary to strengthen high-quality majoring education/subjects and practical education as well as need to establish teacher cultivating system by teacher cultivating organization's evaluation system and teacher cultivating education program related by differentiation and easiness of majoring characterization. Secondly, teacher cultivating for new departments and new subjects can apply related major system, free major system, etc. Thirdly, if professional high schools find majoring areas whose content is same one another and introduce common indication subject system, it will be helpful to improve the quality of teachers, teacher certification examination, etc. of professional area.

• Transactions of the Korean Society of Automotive Engineers
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• v.21 no.1
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• pp.1-8
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• 2013

Recently, the automotive technology has developed with electronics and information technology as convergence technology while vehicles had been regarded as machines. Moreover, vehicles are becoming more intelligent and safer devices, assembly of advanced technologies by customers' demand. Even though all of installations of vehicle have attracted as diverting devices, it cause drivers' mistakes like delay of response on traffic condition. Here, we proposed the Field Operational Test (FOT) environment which could be used as driving and road conditions collector(Vehicle motion, Traffic condition, Driver input, Driver state, etc.) for researches about Driver Friendly Intelligent System(SCC, LDWS, etc.), Human Vehicle Interface(Driving Workload, etc.) and Economic Drive Model. Furthermore driving patten and fuel consumption patten of drivers were analyzed by measured data and direction of future research was suggested.

• Journal of Korea Society of Digital Industry and Information Management
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• v.4 no.2
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• pp.101-108
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• 2008

In this paper, we develop system to backup automatically personal data by real time based on ECA model. This system backups data that is changed in user PC using CDP technology based on ECA model. Proposed ECA model defines file's change such as file creation, update, remove etc. in user PC to event for synchronization between server and user PC. If event is detected about file, proposed system examines condition that is defined and backup the file to server. Backup data that is stored to server can recovery on point of time that user wants. The proposed system can be applied to data management system for business, personal data management system, high-capacity contents management system etc.

• Electronics and Telecommunications Trends
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• v.14 no.6 s.60
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• pp.162-171
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• 1999

국가적인 지능형 교통시스템(Intelligent Transport System: ITS) 체계에 있어서 단거리전용통신(Dedicated Short Range Communication: DSRC)은 중요한 부분이다. DSRC의 응용부분은 여러분야에 걸쳐 있으며 본 고에서는 자동통행요금징수(Electronic Toll Collection: ETC)의 표준화 동향에 대하여 기술하고자 한다. 그러나 많은 상반되는 자동통행요금징수의 개발로 인하여 에어 인터페이스의 표준화가 어려움에 있다. 본 고에서는 미국 교통부의 지원하에 IEEE(Institute of Electrical and Electronics Engineers)와 ASTM (American Society of Testing and Materials)에 의해 개발되어진 ETC 시스템의 에어 인터페이스 표준들의 현황에 대하여 기술하고 국내의 ETC 시스템의 에어 인터페이스 표준화 동향에 대하여도 기술하고자 한다.

• Electronics and Telecommunications Trends
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• v.15 no.1 s.61
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• pp.38-40
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• 2000

자동 요금 징수 시스템인 ETC(Electronic Toll Collection) 시스템에서 차량의 탑재장치와 비컨(Beacon) 간에 마이크로파가 전파되는 경로를 모델화하였으며 다중 경로에 따른 페이딩 효과를 분석하였다. 또한 환경 변화 즉 강우 시 마이크로파 전파도 고려하여 수치분석을 하였다. 분석결과 강우에 의한 반사면의 반사계수가 변하여 페이딩 효과가 크게 증가하였다. 이런 수치해석 결과를 탑재장치에서 수신된 전압의 크기와 비컨과 차량 사이의 거리로 도시하였다.

• Journal of Biosystems Engineering
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• v.22 no.3
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• pp.343-350
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• 1997

In farm management, many factors should be considered to select optimum farm machinery Some factors such as fm size can be quantified, but other factors such as working experience can not be. Futhermore, as several factors are missed and assumptions are made for the selection using conventional computer programs, the result is sometimes questionable. This problem can be solved using artificial intelligent techniques such as expert system. In this study, an expert system was developed to select optimum machinery by considering available working days, machinery to on, farming environments, labor cost, population, etc. It also took into account the characteristics of machinery, turning radius, easiness of operation, subsidy, loan to purchase, asset. farmers age, Rest Metabolic Rate, and working experience, etc. Expertise and experience of human experts were utilized to develop the expert system. The developed expert system was evaluated by the human experts and others, and it was proved to be practically useful fir farmers.

• Journal of the Korean Society of Systems Engineering
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• v.5 no.1
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• pp.21-32
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• 2009

The systems engineering (SE) process shall be applied to the project for successful development of ultra-high-speed (UHS) Maglev train system which is one of very large and complex systems. It is important to abolish technology differentials from the advanced developers such as Germany, Japan, etc. and to ensure discriminatory competitiveness of the application of systems engineering process for the development of the system based on appropriate concepts and requirements. General operation concept and stakeholder's requirements of UHS Maglev train system must be elicited with system concept for initiating the project. The management plan should be devised for all sorts of systems engineering activities of risk management, performance management, lifecycle cost management, etc. This paper would support to establish the systems engineering management plan (SEMP) for the program of UHS Maglev train system development with associated documents.

• Journal of Institute of Control, Robotics and Systems
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• v.9 no.12
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• pp.994-1000
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• 2003

A new relative motion control methodology for a following system to an independent leading system is proposed for controlling relative position, velocity, and tension etc. It is based on maintaining minimum relative error between two independent systems. The control command of the following system to a leading system is generated by adding the current command and the output of the relative error compensation. The proposed control method is implemented on the experimental equipment which is a wire winding-unwinding system to control the tension of the line. The results show the unwinding system(follower) following the independent motion of the winding system(leader) to control the constant tension of the line in order to keep the roller dancer in reference position. The relative motion control method proposed in this paper can be applied to high precision equipment for unwinding and winding fine wire, fine fiber, and tape etc.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.10a
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• pp.128-131
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• 2002

Three Dimensional measuring system using optical interference is greatly needed for semiconductor surface or optical surface. The application of this system are : MEMS product, semiconductor surfaces, optical components, precise machined surface, etc. In this paper, Interferometry based measurement system is introduced, which is nondestructive and noncontact inspection system. This system have relatively many advantage, compared with AFM/STM, SEM, Stylus, etc. The developed system can measure the surface topography with high precision and resolution, and with few seconds. And the associated software algorithm is also developed for the ultra precision 3D measuring surface. Various samples that is measured using this system is showed in the latter of this paper.

• Journal of Sensor Science and Technology
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• v.18 no.1
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• pp.1-21
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• 2009

There have been continued effects to develop various types of chemical sensors according to the demands in many application fields such as safety, pollution, environment, medical engineering and food industries etc. In this review, the author intended to cover the general aspects of chemical sensors, including the history of the development, the classification, the sensing properties, and the types and application examples. And the future outlook of the chemical sensor technology, focusing on the advanced materials, high technology fusion, miniaturized intelligent system and ubiquitous sensor networks etc., has been described.