• Electronics and Telecommunications Trends
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• v.35 no.7
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• pp.67-76
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• 2020

Because of the development and spread of artificial intelligence (AI) technology, new security threats and adverse AI functions have emerged as a real problem in the process of diversifying areas of use and introducing AI-based products and services to users. In response, it is necessary to develop new AI-based technologies in the field of information protection and security. This paper reviews topics such as domestic and international trends on false information detection technology, cyber security technology, and trust distribution platform technology, and it establishes the direction of the promotion of technology development. In addition, the development of international trends in ethical AI guidelines to ensure the human-centered ethical validity of AI development processes and final systems in parallel with technology development are analyzed and discussed. ETRI has developed AI policing technology, information protection, and security technologies as well as derived tasks and implementation strategies to prepare ethical AI development guidelines to ensure the reliability of AI based on its capabilities.

• Proceedings of the Korea Society for Simulation Conference
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• 1996.05a
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• pp.15-15
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• 1996

A shop floor control system (SFCS) is the central part of a CIM system used to control the activities of several pieces of manufacturing equipment (e.g., NC machines, robots, conveyors, AGVs, AS/RS). The SFCS receives orders and related process plans, and then performs selecting a specific process routing, allocating resources, scheduling the workpieces, downloading the processing instructions (e.g., RS-274 instructions for NC machines, VAL II programs for robot), monitoring the progress of activities, detecting and recovering from errors, and preparing reports on the status of the manufacturing system. Simulation has been utilized in discovering control policies used for resolving shop floor be control problems such as resource contentions, part dispatching, deadlock. The simulation model must be designed to respond to real-time data coming from a shop floor. However, to rapidly build a realtime simulation model of SFCS cannot be easily accomplished. This talk is to address an automatic program generator of discrete event simulation model for shop floor control from process plans and resource models. The program generator is capable of constructing complete discrete simulation models for multi-product and multi-stage flexible manufacturing systems.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1694-1695
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• 2007

DC-Motor is needed more and more sophisticated control to follow the highest precision of industrial automation and used in a number of control equipment or industrial fields. It is also useful to control single crystal(Al2O3) growth. It is possible to procure a quality crystal utilizing a DC-Motor, if you mix Hydrogen and Oxygen gas properly and keep proper temperature in accordance with time process. In this paper, we will study about electrical valve positioning system for the gas mixture to improve the quality of single crystal($Al_{2}O_{3}$) growth and we will design about realtime monitoring systems of the automatic gas contol DC- Motor for single crystal($Al_{2}O_{3}$) growth

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2678-2680
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• 2001

We develop a total solution system for applications, which is called a data processing module system(DPMS), based on ASP, PDF, JAVA, and MSSQL. The DPMS system provides a realtime telematic guidance in the fields of application, recruiting, and management. The user documents the PDF file on the Web browser and store the file in DB for correction. The DPMS discovered the difficulties in data input due to 2 byte problem of Korean language. This result leads to the usage of Korean language as well as others. Test results through free-charge access confirm that the DPMS outperforms the conventional systems based on ASP with HTML in view of simplicity and confidentiality.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10a
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• pp.454-458
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• 2006

응용프로그램은 특정 운영체제에 의존적으로 개발되기 때문에 다른 운영체제를 사용하는 시스템에 그대로 이식하는 것이 불가능하며, 운영체제가 변경될 경우 응용프로그램을 다시 개발하여야 하는 한계를 가지고 있다. 또한 응용프로그램의 시스템 종속성으로 인해 동일한 기능을 제공하는 응용프로그램을 중복 개발함으로써 개발 단계뿐 아니라 유지 및 관리에 많은 노력과 비용을 필요로 하게 된다. 응용프로그램의 운영체제에 대한 의존성을 줄이고 플랫폼이 변경되더라도 응용프로그램의 정상 동작을 지원하기 위해서는 미들웨어가 필요하다. 본 논문에서는 실시간 운영체제들의 대표적인 API 함수를 선택하여 기본 API 를 선정하고 대표적 실시간 운영체제인 QNX 위에서 POSIX 기반의 미들웨어를 설계 및 구현하였다.

• Journal of Korea Multimedia Society
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• v.5 no.1
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• pp.114-119
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• 2002

Realtime assignment of railways is an important component in the railway control systems. To solve this problem, we must exactly represent the track topology. Graph is a proper data structure for representing general network topologies, but not Proper for track topologies. In this paper, we define a new data structure, railway graph, which can exactly represent topologies of railway networks. And we describe a path search algorithm in the defined railway graph, and a top-down approach for designing railway network by the Proposed graph.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04b
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• pp.472-474
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• 2004

내장형 실시간 시스템은 점차 소형화, 다기능화 하여 그 복잡도가 증가하고 있다. 이로 인해 소프트웨어 아키텍처의 적용이 요구되고 있다. 아키텍처를 적용하기 위해서는 내장형 실시간 시스템에 적합한 아키텍처를 선정해야 하며, 선정한 아키텍처는 처리속도와 같은 비기능적 요구사항을 만족할 수 있어야 한다. 이에 본 논문에서는 내장형 실시간 시스템 개발 중 아키텍처 선정 시 처리속도에 기반하여 아키텍처를 선정할 수 있는 성능평가 절차와 고려사항을 제안한다. 이를 통해 사용자가 제시한 성능적 요구사항에 적합한 아키텍처를 선정 할 수 있다.

• Journal of Intelligence and Information Systems
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• v.6 no.1
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• pp.113-128
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• 2000

This paper presents a first year report of an ongoing multi-year project to develop a systolic parallel simulation system for dynamic traffic assignment. The fundamental approach to the simulation is systolic parallel processing based on autonomous agent modeling. Agents continuously act on their own initiatives and access to database to get the status of the simulation world. Various agents are defined in order to populate the simulation world. In particular existing modls and algorithm were incorporated in designing the behavior of relevant agents such as car-following model headway distribution Frank-Wolf algorithm and so on. Simulation is based on predetermined routes between centroids that are computed off-line by a conventional optimal path-finding algorithm. Iterating the cycles of optimization-then-simulation the proposed system will provide a realistic and valuable traffic assignment. Gangnum-Gu district in Seoul is selected for the target are for the modeling. It is expected that realtime traffic assignment services can be provided on the internet within 3 years.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.36.5-36
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• 2001

Localization is one of the key problems in the navigation of autonomous mobile robots. The probabilistic Markov localization approaches offer a good mathematical framework to deal with the uncertainty of environment and sensor readings but their use for realtime applications is limited by their computational complexity. This paper aims to reduce the high computational cost associated with the probabilistic Markov localization algorithm. We propose a hybrid landmark-based localization method combining triangulation and probabilistic approaches, which can efficiently update position probability grid, while the probabilistic framework allows to make use of any available sensor data to refine robot´s belief about its current location. The simulation results show the effectiveness and robustness of the method.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.1067-1070
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• 2009

It is important to control environment information such as temperature in distribution & logistics systems. To manage temperature and environment information in realtime, SCCM(Smart Cold Chain Management) system must manage and integrate tags and various types sensor information. But, it needs standard code system to manage and integrate various types tags and sonsors. In this paper, we propose standard code system to apply the SCCM system.