• Journal of the Korea Society of Computer and Information
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• v.20 no.12
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• pp.181-188
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• 2015

In this paper, we propose a Science subject program based on programming learning to improve computational thinking ability in middle school. As the necessity of software education rises recently, the subject of information was designated as the mandatory subject in elementary, middle and high schools. In order to cultivate the ability that enables the leaners to search the knowledge in need by themselves and raise troubleshooting method, not the existing indoctrination, his thesis was willing to improve Computational Thinking ability and improve the ability of considering and thinking the matters by using scratch language. For that, this thesis developed and suggested science subject program that utilizes the programming learning.

• Journal of Powder Materials
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• v.9 no.4
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• pp.261-266
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• 2002

CAE technology is an integrated tool including all aspects such as powder, binder system, mixing, injection molding, debinding and sintering. Therefore, CAE technology is considered as one of core technologies for PIM industry in the future. Recently many researchers are developing not only CAE software itself but also application procedures of CAE software. In this study, the applications for CAE technology in PIM industry are presented including feedstock mixing effect, several cases of troubleshooting and optimization procedure.

• Journal of the Korea Society of Computer and Information
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• v.20 no.10
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• pp.45-51
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• 2015

In this paper, we propose a way to reduce the SW reliability test time and human errors by utilizing the Lean Six Sigma methodology as a troubleshooting tool. Recently, SW technology is rapidly changing and the importance of SW management has been recognized. Accordingly, the SW reliable test for the SW development outcomes in one of the methods for SW quality improvement is required. However, it consumes a lot of development costs, has the time constraints and human errors in SW reliable test, so, it is difficult to meet the requirements for SW test.

• Journal of Electrical Engineering and Technology
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• v.13 no.5
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• pp.2033-2044
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• 2018

This study presents states-of-the art overview of the system level electrostatic discharge (ESD) analysis and testing. After brief description of ESD compliance standards and ESD coupling mechanisms, the study provides an in-depth review and comparison of the various techniques for the system level ESD coupling analysis using time and frequency domain techniques, full wave electromagnetic modeling and hybrid modeling. The methods used for improving system level ESD testing using troubleshooting and determining the root causes of soft failures, the optimization of ESD testing and the countermeasures to mitigate ESD problems are also discussed.

• Journal of Intelligence and Information Systems
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• v.2 no.1
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• pp.1-9
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• 1996

사출 성형의 초보자도 이용할 수 있으며 사출 성형기의 이력 관리를 할 수 있는, 플라스틱 사출 성형의 진단과 불량대책을 위한 지식 기반 전문가 시스템을 ATR-IM 이라는 범용 전문가시스템 쉘을 이용하여 구현하였다. 지식베이스(knowledge base)는 수지 회사와 관련 서적, 전문가의 경험을 토대로 구축하였으며, 구현된 시스템은 크게 사출 공정 조건 설정 시스템, 사출기 ID에 따른 이력 관리 시스템, 사출성형 불량진단 시스템의 세부분으로 나누어 구성하였다. 본 연구를 통해 제안된 방법에 따라 업체별 사출기 성능에서 오는 공정 조건값의 차이를 사출공정 조건값의 저장에 의해 고려할 수 있으며, 불량 해결에 대한 전문가시스템이 추론 순서 결정을 경험적 확률에 따라 이루어지도록 함으로써 현장에서의 작업 환경을 고려한 전문가시스템이 되도록 하였다.

• Journal of the Korean institute of surface engineering
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• v.26 no.3
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• pp.121-126
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• 1993

In this study, a user-friendly expert system is developed for bright nickel plating processes which have a number of influence factors related to the plating quality. Because the mutual relations between these factors in the processes are not quantitatively identified, the expert system deals mainly with the troubleshooting process problems by using the production rule which is able to utilize effectively the qualitatives knowledge and the accumulated experience. Especially, to provide the system user with more timely and convenient informations about the cause of problem symptom and the corresponding countermeasure, it is introduced the interactive user interface using the Korean language. Also the knowledge base and inference engine of the expert system are completely separated, so that the substance of knowledge base can be easily updated and extended.

• Proceedings of the KIEE Conference
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• 2005.10c
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• pp.211-213
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• 2005

한국전력공사에서는 전압원 인버터형 FACTS 기기인 UPFC를 전남 강진군 강진변전소에 설치(2003. 5. 23준공) 운전하였다. 강진 UPFC는 한전과 (주)효성이 공동으로 투자하고, 지멘스와의 기술제휴를 통해 개발하였으며, 40MVA 병렬인버터, 40MVA 직렬인버터로 구성되어 총 80MVA 용량이다. 준공이후 2년여에 걸친 운전으로, 강진 UPFC의 고장정지는 현저히 줄었다. 본 논문에서는 강진 UPFC의 주요 이벤트, 고장해소 및 설비의 신뢰성 향상을 위한 대응 조치들에 대해 정리하였다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1997.10a
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• pp.314-318
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• 1997

The paper is an outline of development of vibration troubleshooting database on Web Browser which has been able to connect with the Internet. When the vibration trouble have occurred in industrial field, most important matter is that how to solve it. We expect it effective to solve the matter to develop a case base system. The System is expected that the access speed will be fast to connect with the Internet and the user will be free from to learn search queries to use graphical user interface(WWW) as a search interface.

• Clinical Endoscopy
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• v.55 no.5
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• pp.605-614
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• 2022

The double-guidewire method has been increasingly used in endoscopic procedures for biliary and pancreatic diseases in recent years, including endoscopic retrograde cholangiopancreatography and endoscopic ultrasonography-related procedures. In addition, double-lumen catheters with uneven distal and proximal lumen openings have been introduced, making it possible to easily create a double-guidewire situation, and the usefulness of the double-guidewire technique using uneven double-lumen cannulas has been widely reported. Although the advantages of using two guidewires depend on the particular situation and the appropriate use of the two guidewires, deepening the knowledge of the double-guidewire method will contribute greatly to troubleshooting in daily practice. In this review, the usefulness of the double-guidewire technique is discussed with respect to two main areas: selective insertion of guidewires and devices and biliary cannulation.

• Journal of the Korean Society of Earth Science Education
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• v.4 no.2
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• pp.102-107
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• 2011

In this study, elementary school science program, this category did not affect any troubleshooting analyzed. Thinking Science Program to buy for them in group activities by using one of the elements of a program of treatment and cognitive level effects were two kinds of research questions. 102, 5th grade four classes were involved, these two classes of the experimental group and the remaining two classes were divided into a control group. Pre-test between the two groups is compared to the level and classification problem-solving skills but the skills did not show a statistically significant difference. Thinking Science activity after application of classification and posttest the experimental group than in the control group problem solving abilities of students classified at the level of statistical significance was higher. Thinking Science program is a treatment effect for each level of analysis, tests, regardless of cognitive level was more effective. Through theses findings, Thinking Science activities 5th grade category classification problem-solving skills of students found to be effective in improving and these types of programs actively introduced in the field suggests that we need to see.