• Journal of the Institute of Electronics Engineers of Korea TE
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• 제37권5호
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• pp.117-124
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• 2000

As network security is coming up with significant problem after the major Internet sites were hacked nowadays, IDS (Intrusion Detection System) is considered as a next generation security solution for more trusted network and system security We propose the new IDS model which can detect intrusion in the expanded distribute environment in host level, drawback of existing IDS, and implement prototype. We used pattern extraction agent so that we extract automatically audit file needed in intrusion detection even in other Platforms.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 한국해양정보통신학회 2001년도 추계종합학술대회
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• pp.89-92
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• 2001

In this paper, it is proposed that RSVP and WFQ must be a good way of a better service for the better quality for Mobile If Network. For the Performance Analysis of working it was composed of Mobile IP and VoIP Network model, and further more test of the postpone and QoS was implemented. The results of the test is as follows, Before the movement of mobile agent was 2ms, after that, 3ms, And before QoS was adapted the value was 30ms, after being adapted, analyzed as 10ms. This research that the problem of put off was improved by adaping QoS in the mobile IP Network.

• Journal of the Institute of Electronics Engineers of Korea CI
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• 제45권5호
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• pp.134-139
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• 2008

In this paper, we propose a story generation system using multi emotional agents. The proposed multi emotional agents are equipped with multiple emotional model so that it can be used as individually personalized agents that can generates unique storylines. Basically these kinds of multi emotional agents are easily employed as Avatar or NPC in computer games. In the proposed system, emotional agents are used as actor or actress whose characters and preferences are different each other. The storylines generated using the proposed system are realistic since the characters are emotional as humans.

• Proceedings of the Korea Water Resources Association Conference
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• 한국수자원학회 2010년도 학술발표회
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• pp.851-854
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• 2010

유역관리는 유역이라는 한정된 범위 내에서 물에 영향을 미치거나 물에 의하여 영향을 받는 모든 인간 활동과 자연현상을 통합적으로 고려하는 것이다. 이러한 관점에서 유역관리는 유역 차원에서 물을 경제적이고 공평하게 관리하고 분배하여 수자원에 대한 장기적이고 지속가능한 해결 방안을 마련하는 것이다. 여기에는 정부, 시민사회 및 기업 행위자가 사회경제적 개발목표와 정책 형성, 집행계획을 수립하는 것으로부터 시작된다. 유역관리를 위한 의사결정들은 행위자들과의 영향으로 수정되며, 이런 과정에서 토지와 수자원에서 분쟁이 발생하며, 수자원 관리자는 자연현상, 물 사용, 재정적, 인적자원 및 외부적인 요인으로 인해 목적을 달성하는데 부합하지 않을 수도 있다. 효과적인 유역관리를 위해서는 제약조건 하에서 수자원 관리자가 의사결정에 정보를 주고 주요 행위자들과 협력을 통해서 이루어 질 수 있다. 본 논문에서는 유역관리를 위한 의사결정을 행위자기반모형(Agent based Model, ABM)으로 이해하고자 하며, ABM은 유역관리의 이해당사자간의 정책과정을 도출하고 다양한 유역관리 대안을 평가하고 유역관리의 영향을 설명하는 모델이다. 본 모형은 관측자료를 통해 상향식 접근법으로 가능한 많은 세부사항을 모의할 수 있다. 분석과정은 자료의 수집, 모델 확립, 모델의 개발, 통계 자료 수집 및 모델의 결과와 실제 시스템의 보충된 관측자료를 비교하는 검증 순으로 진행되며, 본 모델에서의 행위자는 과거의 행동으로부터 주위 환경의 반응하는 패턴을 확인하고 개발하며, 이러한 패턴은 정책들을 구별하기 위해서 이용되며, 이러한 과정에서 강화학습이 이루어진다. 이를 통해 행위자의 익숙한 방식의 합리적인 행동과 정책들의 상관관계를 평가할 수 있으며, 강화학습을 통해 실제적인 통계적인 모델이 가능할 것이다.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제12권6호
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• pp.1022-1025
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• 2008

Session Initiation Protocol (SIP) has become the call control protocol of choice for Voice over IP (VoIP) networks because of its open and extensible nature. However, the integrity of call signaling between sites is of utmost importance, and SIP is vulnerable to attackers when left unprotected. Currently a herby-hop security model is prevalent, wherein intermediaries forward a request towards the destination user agent sewer (UAS) without a user agent client (UAC) knowing whether or not the intermediary behaved in a trusted manner. This paper presents an integrated security model for SIP-based VoIP network by combining hop-by-hop security and end-to-end security.

• Journal of the Korea Society of Computer and Information
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• 제26권11호
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• pp.93-99
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• 2021

The sensor networks should be appropriately designed by applied network purpose, so that they can support proper application functions. Based on the design of suitable network model, the network lifetime can be maximized than using other general strategies which have not the consideration of specific network environments. In this paper, we propose a non-deterministic agent scheme to the mobile sink in distributed wireless sensor networks. The sensor network area can be divided into several sensor regions. Hence, to these such networks, the specified suitable scheme is requested by the applied network model to implement satisfactory network management. In this paper, we theoretically represent the proposed scheme, and provide the evaluation with the simulation results.

• Proceedings of the SCSK Conference
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.698-699
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• 2003

DA-3711 is a novel, anti wrinkle agent containing growth factors derived from human skin culture. In this study, effect of topical application of DA-3711 on chronic ultraviolet B (UVB)-induced skin damage was evaluated in hairless mice model. Exposure to UVB for 8 weeks induced apparent wrinkles on the back skin of the mice. The dorsal surfaces were exposed to UVB for a further 8 weeks, during which the surfaces where treated daily by topically application of a lotion containing either 35％ or 70％ of DA-3711. For comparison, lotion base, lotion base containing Cylasphere Retinol(equation omitted) (2500 I.U., Coletica) and NouriCe $l^{(R)}$ (Biozhem) were applied topically once a day for 8 weeks.(omitted))

• International Journal of Computer Science & Network Security
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• 제24권9호
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• pp.150-156
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• 2024

With the advent of personalized search engines, a myriad of approaches came into practice. With social media emergence the personalization was extended to different level. The main reason for this preference of personalized engine over traditional search was need of accurate and precise results. Due to paucity of time and patience users didn't want to surf several pages to find the result that suits them most. Personalized search engines could solve this problem effectively by understanding user through profiles and histories and thus diminishing uncertainty and ambiguity. But since several layers of personalization were added to basic search, the response time and resource requirement (for profile storage) increased manifold. So it's time to focus on optimizing the layered architectures of personalization. The paper presents a layout of the multi agent based personalized search engine that works on histories and profiles. Further to store the huge amount of data, distributed database is used at its core, so high availability, scaling, and geographic distribution are built in and easy to use. Initially results are retrieved using traditional search engine, after applying layer of personalization the results are provided to user. MongoDB is used to store profiles in flexible form thus improving the performance of the engine. Further Weighted Sum model is used to rank the pages in personalization layer.

• The Transactions of the Korean Institute of Electrical Engineers D
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• 제50권12호
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• pp.597-603
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• 2001

In the mathematical model for the transmission dynamics of HIV infection described in previous papers, the population under consideration is assumed to be homogeneous community of homosexual males for which the parameter x represents the constant rate at which individual members of the population acquire new sexual partners. This is a gross oversimplification since it is well known that individuals vary widely in their levels of sexual activity and in this papers the heterogeneous model is modified to allow for this variation. The pattern on the epidemic character of HIV, the causative agent of AIDS, was analysed by heterogeneous-mixing model. The computer simulation was performed using real date.

• 한국컴퓨터산업교육학회:학술대회논문집
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• 한국컴퓨터산업교육학회 2003년도 제4회 종합학술대회 논문집
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• pp.127-133
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• 2003

The data models which express all types of video information physically and logically. and the definition of spatiotemporal relationship of video data objects In This paper, we classifies meta-model for efficient management on spatiotemporal relationship between two objects in video image data, suggests meta-models based on Rambaugh's OMT technique, and expanded user model to apply the adaptive model, established from hyper-media or web agent to VOD. The proposed meta-model uses data's special physical feature: the effects of camera's and editing effects of shot, and 17 spatial relations on Allen's 13 temporal relations, topology and direction to include logical presentation of spatiotemporal relation for possible spatiotemporal reference and having unspecified applied mediocrity.