• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.46.1-46
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• 2002

$\textbullet$ Abstract $\textbullet$ Introduction $\textbullet$ Liquid Level Control System $\textbullet$ Flow Ratio Control System $\textbullet$ Application of Lookup Table Technique $\textbullet$ Experimental Results $\textbullet$ Conclusion

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.79.1-79
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• 2002

$\textbullet$ Contents 1 Abstract $\textbullet$ Contents 2 Introduction $\textbullet$ Contents 3 Design of the system $\textbullet$ Contents 4 Creating product database $\textbullet$ Contents 5 Functionality testing $\textbullet$ Contents 6 Conclusion $\textbullet$ Contents 7 References

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.97.1-97
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• 2002

$\textbullet$ Abstract $\textbullet$ Introduction $\textbullet$ Wire Rope Detecting System $\textbullet$ Signal Processing $\textbullet$ Experiment $\textbullet$ Conclusion $\textbullet$ Reference

• 전기의세계
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• 제28권6호
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• pp.47-51
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• 1979

An optimal problem in which the dynamics is nonlinear and the cost functional includes a discontinuous integrand is investigated. By using Neustadt's abstract maximum principle, a necessary conditions in the form of Pontryagin's maximum principle is derived and it is further shown that this necessary condition is also a sufficient condition for normal problems with linear-in-the-state systems.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 한국생물과학협회 학술발표대회
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• pp.294.1-294
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• 1999

No Abstract, See Full Text

• 대한인간공학회지
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• 제29권4호
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• pp.673-680
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• 2010

The effects of different auditory warnings on response time and accuracy were studied in a laboratory ship-bridge work environment. Subjective preference on the type of auditory warnings was also of a primary concern. Twenty five subjects were asked to select an appropriate button for the warning sound presented with three types of auditory warning (abstract sound, auditory icon, and voice alarm) and five levels of warning situation (fire, steering failure, collision, engine failure, and low power). Results showed that the response time and accuracy was significantly affected by the types of auditory warning. The voice alarm resulted in a higher accuracy and subjective preference, as compared to the auditory icon and abstract sound. Regarding the response time, auditory icons and voice alarms were equivalent and superior to abstract sounds. Actual or potential applications of this research include guidelines for the design of integrated ship bridge systems.

• 해양환경안전학회지
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• 제11권1호
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• pp.11-16
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• 2005

선박은 하나의 거대한 인간-기계시스템으로써 작업자와 시스템간의 상호 작용이 얼마나 잘 이루어지는가에 따라 수행하고자 하는 직무와 수행도에 영향을 미치게 된다. 선교 내에는 시각표시장치뿐만 아니라 청각표시장치로부터 나오는 많은 신호들이 존재한다. 그 중 장비의 알람에 대한 인간의 인지능력에 대한 연구는 미흡한 상태이다. 본 연구에서는 청각적 아이콘과 함축적 소리를 비교$\cdot$평가하여 알람에 대한 작업자의 인지에 대해 연구 하였다. 실험결과 청각적 아이콘이 함축적 소리를 사용한 경우 보다 더 빠르고 정확하게 인지 할 수 있는 것으로 나타났다. 본 연구의 결과는 선교 내 청각표시장치의 성능 기준 그리고 현재 논의 되고 있는 통합선교알람시스템을 위한 기초 자료로 이용될 수 있을 것이라 생각된다.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2005년도 춘계학술발표회
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• pp.7-12
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• 2005

선박은 하나의 거대한 인간-기계시스템으로써 작업자와 시스템간의 상호 작용이 얼마나 잘 이루어지는가에 따라 수행하고자 하는 직무와 수행도에 영항을 미치게 된다. 선교 내에는 시각 표시 장치뿐만 아니라 청각 표시 장치로부터 나오는 많은 신호들이 존재한다. 그 중 장비의 알람(alarm)에 대한 인간의 인지능력에 대한 연구는 부족한 상태이다. 본 연구에서는 auditory icons과 sounds의 비교 평가를 통하여 알람에 대한 작업자의 인지에 대한 연구를 하였다. 실험결과 auditory icons를 사용한 경우 sounds 보다 더 빠르고 정확하게 인지 할 수 있는 것으로 나타났다 선교 내 청각적 표시장치의 성능 기준 그리고 현재 논의 되고 있는 통합 선교 알람 시스템을 위한 기초 자료로 본 연구의 결과가 이용될 수 있을 것이라 생각된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 추계학술대회 논문집 전력기술부문
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• pp.111-113
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• 2006

Substation automation is one of the key issues for the enhancement of the power industrial foundation. IEC 60850 is an international standard specifying communication network and systems in substation. It supports interchangeability and interoperability of equipments from different vendors. ACSI(Abstract communication service interface) specifies basic communication structure for substation and IEDs. It supports communication as well as various services without proper protocols. For actual communication, MMS(Manufacturing Message Specification : ISO 9506) is used to map ACSI services. Solutions for the development of communication driver based don IEC 61850 are proposed in this paper.

• International journal of advanced smart convergence
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• 제13권2호
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• pp.48-60
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• 2024

With the exponential growth of satellite data utilization, machine learning has become pivotal in enhancing innovation and cybersecurity in satellite systems. This paper investigates the role of machine learning techniques in identifying and mitigating vulnerabilities and code smells within satellite software. We explore satellite system architecture and survey applications like vulnerability analysis, source code refactoring, and security flaw detection, emphasizing feature extraction methodologies such as Abstract Syntax Trees (AST) and Control Flow Graphs (CFG). We present practical examples of feature extraction and training models using machine learning techniques like Random Forests, Support Vector Machines, and Gradient Boosting. Additionally, we review open-access satellite datasets and address prevalent code smells through systematic refactoring solutions. By integrating continuous code review and refactoring into satellite software development, this research aims to improve maintainability, scalability, and cybersecurity, providing novel insights for the advancement of satellite software development and security. The value of this paper lies in its focus on addressing the identification of vulnerabilities and resolution of code smells in satellite software. In terms of the authors' contributions, we detail methods for applying machine learning to identify potential vulnerabilities and code smells in satellite software. Furthermore, the study presents techniques for feature extraction and model training, utilizing Abstract Syntax Trees (AST) and Control Flow Graphs (CFG) to extract relevant features for machine learning training. Regarding the results, we discuss the analysis of vulnerabilities, the identification of code smells, maintenance, and security enhancement through practical examples. This underscores the significant improvement in the maintainability and scalability of satellite software through continuous code review and refactoring.