• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.10
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• pp.1767-1772
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• 2008

As the interest on healthcare area in pursuit of well-being, health etc is increasing, u-Healthcare service that can monitor the condition of oneself's health anytime & anywhere is getting an attention. The existing health information system is consist of structure supporting the storage of estimation value and just simple display. But this needs to get a harmonious interaction to provide the health information exactly and speedily for efficient condition confirmation and diagnosis in health information system, In relation to this, this study proposed the developmental contents about visualization engine providing the beuer information discrimination and more user-friendly in various service of u-Healthcare.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.04a
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• pp.852-855
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• 2010

Tree type of Rule Case will be processed by the method that provide practical Rule Case to Rule Engine that is made with procedural language beforehand, then the Rule Engine according to the condition of the special Rule Case to return result in current Rule-Based System. There are two disadvantages in the method; the first is according to specific business rule after construct the Rule Engine when the business rule changing the Rule Engine also must be changed. The second is when Rule have many conditions the Rule Engine will become very complex and the speed of processing Rule Case will become very slow. In this paper, we will propose a simplified algorithm that according to the theory of ID Tree to produce Rules which be used in Rule-Based System. The algorithm can not only produce Rules but also make sure of satisfying change of business rule by execute the algorithm. Because it is not necessary to make a Rule Engine, we will anticipate effect of increasing speed and reducing cost from Rule-Based System of applying the algorithm.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.2
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• pp.59-68
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• 2016

Context-aware services recognize the context of situation environments of users and provide useful services according to the context for users. Usual rule-based systems can be used for context-aware services with the specified rules that express context information and operations. This paper proposes a light-weight rule engine that minimizes memory consumption for resource-constrained smart things. The rule engine manages rules at the minimum condition level, removes memories for intermediate rule matching results, and uses hash tables to store rules and context information efficiently. The implemented engine is verified using a rule set of a mouse training system and experiment results shows the engines consumes very little memory compared to the existing Rete algorithm with some sacrifice of execution time.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.223-225
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• 2005

기존의 패킷 교환 네트워크는 해킹과 같은 보안 공격에 많은 취약점을 가지고 있다. 침입차단시스템 (Firewall system)과 침입탐지 시스템 (Intrusion Detection system)같은 보안 시스템이 개발되고 있지만 DOS나 Probe등을 비롯한 다양한 공격에 대해 적극적으로 대처 할 수 없다. 결과 DARPA를 비롯한 여러 기관에서 전송중인 액티브 패킷이 라우터에서 관리자의 정책을 담고 있는 코드를 실행할 수 있고 그 코드의 실행결과에 따라 라우터의 상태를 변경할 수 있는 액티브 네트워크 전반적인 구조를 제안하였다. 하지만 액티브 네트워크에서 중요한 것은 기존 네트워크와 달리 액티브 패킷이 액티브 노드의 자원에 접근함으로써 발생하게 되는 네트워크 보안이다. 따라서 액티브 노드의 NodeOs단에 Crypto engine, Integrity Engine, Authentication Engine, Authorization Engine등을 비롯한 액티브 노드 인증 및 액티브 패킷/코드 인증 보안 모듈을 둠으로써 액티브 노드 간 서로 안전한 협업적 관리를 통해 보안을 강화한다.

• Proceedings of the KSR Conference
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• 1999.11a
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• pp.73-80
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• 1999

Belief revision involves integrating new information with the current belief. It is a ubiquitous human activity. A critical feature of belief revision lies in its sequential nature. Railroad system can be described as organic. Engine drivers take a great role in this system. Recently, Hogarth and Einhorn(1992) have Posited a belief-adjustment model for updating beliefs. Based on a sequential anchoring and adjustment strategy, the model is important fro decision makers. The sequential nature of information processing is affected by some task variables. This will be mainly explained in this paper. The purpose of this study is to examine the engine drivers' belief revision process and factors which influence on the belief revision process. The factors are the order and the experience. Thereby, this will contribute to the study of engine drivers' behavior. The result of this study is summarized as follows. The order effect due to the order of presentation of the evidence exist. The difference of belief revision is due to The experience level.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.490-493
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• 2020

Using AR technology, which has recently emerged as an innovative technology, AR mobile application for infants was planned. In the form of combining play and education, children's interest is aroused and access to education to various fields is increased. Unity 3D Engine and Vuforia SDK were mainly used to design Android-based mobile applications.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2001.06a
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• pp.197-211
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• 2001

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.233-235
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• 2017

Forklift tend to work in place rather than moving due to work environment conditions, so they express only the engine operation time without expressing the moving distance unlike a general car's instrument panel. Therefore, various consumables constituting the forklift have a replacement cycle according to the operation time of the engine. However, it is very difficult to judge the exact replacement cycle only by the engine operation time because the working environment differs for each forklift. In this paper, we propose a system that provides position information and moving distance information of forklift to driver using GPS and IMU sensor. By using this system, it is expected that the forklift status information, which is difficult to judge by the existing instrument panel, is provided as easier information, and economic benefits for forklift management and maintenance are expected.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.61 no.6
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• pp.838-844
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• 2012

This paper proposes the effective monitoring method for marine engine system, which is implemented based upon Controller Area Network (CAN). As the marine engine monitoring system requires various kind of information, a lot of sensor nodes are distributed to several places. The CAN supports huge numbers of message IDs for the sensor nodes and provides a stable communication channel in a wide area such as a 12,000 TEU container ship. Since the CAN is priority-based communication system, some of hard real-time messages like alarm messages which are time-critical to the operation of the vessel cannot be communicated within the dead-time. Therefore it is desirable to distinguish the bandwidth of the CAN for static state messages and transition-state messages not to be harmful to the engine operations. Using the features of message arbitration ability of the CAN, it is proposed in this paper that the bandwidth allocation is dynamically adjusted to cope with the increment of input signal to improve the performance of monitoring system. Effectiveness and validity of the proposed scheme have been demonstrated through real experiments.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.4B
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• pp.412-421
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• 2011

An economic ship routing means to sail a ship with a goal of minimizing the fuel consumption by utilizing weather forecast information, and many such systems have been recently developed. Most of them assume that sailing is carried out with a constraint like a fixed output of engine-power or a fixed sailing speed. However, if the output of engine-power is controlled, it is possible to reduce the fuel consumption by sailing a ship under a relatively good weather condition. In this paper, we propose a novel economic ship routing system which can search optimal outputs of the engine-power for each part of a path by employing an evolutionary strategy. In addition, we develope an $A^*$ algorithm to find the shortest path and a method to enhance the degree of curve representation. These make the proposed system applicable to an arbitrary pair of departure and destination points. We compared our proposed system with another existing system not controlling output of the engine-power over 36 scenarios in total, and observed that the former reduced the estimated fuel consumption than the latter by 1.3% on average and the maximum 5.6% with little difference of estimated time of arrival.