• The Korean Publising Journal, Monthly
• /
• s.194
• /
• pp.10-11
• /
• 1996

• Journal of Internet Computing and Services
• /
• v.9 no.1
• /
• pp.137-143
• /
• 2008

In ubiquitous environment the multi-agent system is effective for providing intelligent services. In this paper we introduce a new scheduling service model for improving the communication performance in the multi-agent system. It is achieved by assigning a priority to the message according to the weight of formalized ACL message and the number of messages exchanged between the agents. An experiment reveals that the proposed approach allows smaller processing time per message and turnaround time than the scheduling with the existing JADE platform. Moreover, the proposed scheme allows a scalable messaging system.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2010.07a
• /
• pp.345-348
• /
• 2010

멀티 에이전트 시스템은 공통의 목표를 위해 함께 일하기로 합의한 협업 에이전트로 구성된다. 에이전트 시스템에서 메시지를 스케줄링 할 때, 동일한 우선순위가 역할의 중요도를 고려하지 않고 모든 에이전트에게 동일하게 할당된다면 성능은 극대화되지 않을 것이다. 본 논문에서 우리는 새로운 메시지 기반 우선순위 스케줄링 기법을 제안한다. 그것은 에이전트 시스템으로 하여금 에이전트와 메시지 작업 처리량의 중요도에 기반으로 메시지의 우선순위를 적절하게 모델링함으로써 환경 변화에 신속히 적응할 수 있게 한다. 에이전트 시스템의 성능은 저자들에 의해 개발된 에이전트 플랫폼을 통해 실행된 범죄 예방 시스템에 대한 사례 연구를 이용한 제안된 계획에 의해 상당히 개선된 것으로 보여준다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.04a
• /
• pp.175-177
• /
• 2001

본 논문에서는 ATM LAN Emulation에 있어서 연성 실시간 메시지들의 종료시한 만족도를 개선하기 위하여 하부 ATM 네트워크에 이중 혹은 다수의 연결을 설정하고 실시간 메시지들을 스케쥴하는 방식을 제안하고 성능을 평가한다. 대부분의 ATM 교환기들이 동일한 ATM 연결 내에서 우선순위에 따른 스케쥴링을 지원할 수 없다는 단점을 극복하기 위하여 각 연결의 부하를 다르게 유지하고 종료시한이 촉박한 메시지에 귀속된 셀들을 늦은 부하 연결을 통해 전송하도록 함으로써 여유시간에 따른 우선순위를 부여할 수 있으며 분할 기준치의 효율적인 선택에 의해 종료시한 만족도의 향상을 기할 수 있다. 주어진 네트워크 및 메시지들의 인자에 대해 SMPL을 기반으로 수행된 모의 실험 결과는 하나의 단일 연결에 모든 대역폭을 할당받는 기존의 방식에 비해 분할기준치 설정에 의해 최대 6% 까지의 종료 시한 만족도 향상을 보인다.

• 한국HCI학회:학술대회논문집
• /
• 2008.02b
• /
• pp.281-285
• /
• 2008

In the digital media era, coded and non-coded communication are used to convey the message. As the computer interface has been adopted human communication methods, non-coded communication has bee used in the computer interface as well. The changes of message structure in the computer interface have an effect on shifting the way of user's message acceptance from passive to active. The recently developed computer user interfaces are for user to experience diverse visual effect The communication conveyed with this visual effects could be vague but user can conceive strong impact. This experience is understood not only through the visual experience from a monitor screen but also with a sense of tactile. The meaning of sensual and spectacle motion image could be ambiguous. However in the experience of using an interface, it plentifully expands the human sense by giving a visual experience on a whim. The sensually extemporaneous and splendid visual effect that has vague meaning has been very common happening in digital media environment.

• KIPS Transactions on Software and Data Engineering
• /
• v.3 no.3
• /
• pp.125-134
• /
• 2014

This paper proposes a multi-agent message transport architecture to support application areas which need fast message communications for close collaboration among agents. In the FIPA(Foundation of Intelligent Physical Agents) agent platform, all message transfer services among agents are in charge of a conceptual entity named ACC(Agent Communication Channel). In our multi-agent message transport architecture, the ACC is represented as a set of system agents named MTSA(Message Transfer Service Agent). The MTSA enables close collaboration among agents by supporting asynchronous communication, by using Reactor pattern to handle agent input messages efficiently, and by selecting optimal message transfer protocols according to the relative positional relationships of sender agents and receiver agents. The multi-agent framework SMAF(Small Multi-Agent Framework), which is implemented on the proposed multi-agent message transport architecture, shows better performance on message transfer among agents than JADE(Java Agent Development Environment) which is a well-known FIPA-compliant multi-agent framework. The faster the speed of message transfer of a multi-agent architecture becomes, the wider application areas the architecture can support.

• Journal of Internet of Things and Convergence
• /
• v.10 no.2
• /
• pp.131-135
• /
• 2024

In the MQTT protocol, if the retained flag of a message published by a publisher is set, the message is stored in the broker as a retained message. When a new subscriber performs a subscribe, the broker immediately sends the retained message. This allows the new subscriber to perform updates on the current state via the retained message without waiting for new messages from the publisher. However, sending retained messages can become a traffic overhead if new messages are frequently published by the publisher. This situation could be considered an overhead when new subscribers frequently subscribe. Therefore, in this paper, we propose a retained message delivery scheme by considering the characteristics of the published messages. We model the delivery and waiting actions to new subscribers from the perspective of the broker using reinforcement learning, and determine the optimal policy through Q learning algorithm. Through performance analysis, we confirm that the proposed method shows improved performance compared to existing methods.

• Management & Information Systems Review
• /
• v.28 no.1
• /
• pp.99-124
• /
• 2009

This study has observed the influence of green advertisemen on the attitude of consumers in relation to its message effect. The analysis has been conducted in the perpective of awareness-emotion -behavior targeting housewives based on the message structure of the advertisement(conclusion omission type/ conclusion offer type). Results of the analysis are as follows : 1) Green advertisement was more effective for the attitude toward advertisement and products than non-green advertisement and in the case of high involvement the conclusion omission message was more effective than the conclusion offer message. 2) Green advertisement was more effective also for the emotion side than non-green advertisement and the conclusion omission message was found more effective than the conclusion offer message. 3) Green advertisement was found more effective for purchasing activities than non-green advertisement and the conclusion omission message was found more effective than the conclusion offer message in the case of high involvement. 4) In case of the conclusion offer type structure of green advertisement the awareness side influenced purchasing activities and in case of the conclusion omission type structure of green advertisement the emotion side influenced purchasing activities. Besides that in case of the conclusion offer type structure of non-green advertisement both the awareness and emotion sides were found to influence purchasing activities. No difference was found in the conclusion omission type structure of non-green advertisement.

• Proceedings of the Korea Contents Association Conference
• /
• 2009.05a
• /
• pp.362-367
• /
• 2009

온라인상의 쇼핑에서 사용후기에 관한 많은 연구가 진행 중이지만, 사용후기를 보는 원인에 관한 분석에 대해서는 아직 부족함으로 연구를 진행하였다. 온라인상이기 때문에 가지는 위험 중에서도 사용후기를 통해서 어떤 위험을 가장 많이 가지고 있는지에 대해 우선 알아볼 필요성이 있을 것 같다. 이의 연구결과 기능적 위험을 가장 크게 지각하고 있었기 때문에 사용후기를 보는 이유로서의 근거가 될 수 있을 것이다. 둘째, 의류에 관련된 논문들을 보면 온라인상에서 구매를 꺼려하는 이유가 직접 눈으로 보고 만질 수 없다는 기능적 위험을 가장 크게 가지고 있었다. 그렇기 때문에 대리 시용구매를 할 수 있는 사용후기를 이용하여 의류제품을 온라인상에서 구매하는 것이 영향을 미치는 것인지에 대해 알아보고자 한다. 본 연구 결과, 긍정적인 후기를 보고 구매하려는 의도가 나타났었고 부정적인 후기를 보고 구매하지 않으려하므로 사용후기가 구매함에 있어 영향을 미치고 있음을 알 수 있었다. 마지막으로 사용후기를 중심으로 메시지를 보고 메시지에 대한 태도와 제품에 대한 태도, 그리고 구매의도 뿐만 아니라 메시지의 유형에 따라서 구전 의도나 사이트 재방문 의도라는 구매 행동에도 차이가 날 것이라고 추측했다. 연구 결과를 보면 유형별로 각각 다르게 영향을 미치고 있었으며, 부정적인 메시지로 인해 제품에 대한 좋지 않은 태도를 가지게 됨으로써 제품을 구입하려는 사이트 재방문 의도는 나타나지 않았다.

• Journal of Advanced Navigation Technology
• /
• v.12 no.6
• /
• pp.627-633
• /
• 2008

In the case of traffic accidents, the broadcasting methods used in the mobile ad hoc network (MANET) cannot applied to transmit reliable message since moving high-speed in vehicular ad hoc networks (VANET) environments. In this paper, in order to guarantee transmitting reliable messages, we propose a collision avoidance method based-on directional antenna in VANET. In order to reduce interference from omni-broadcasting and to avoid hidden node problem from moving high-speed, we employed a forward-handed and backward directional antenna. The authors simulated the proposed method based on directional antenna and showed that the proposed method has been improved in respect to network utilization compared to existing VANET protocols.