• Title, Summary, Keyword: AclOs

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ACL based Mobile Agent Framework (ACL 기반 이동 에이전트 프레인워크)

  • 조정은;김원국;김상욱
    • Proceedings of the Korean Information Science Society Conference
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    • pp.580-582
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    • 1998
  • 본 논문에서는 ACL(Agent Communication Language)를 기반으로 한 에이전트 프레임워크 Mollet을 제안하고 코드와 데이터의 이동성을 중점을 두어 이를 OS 버그 패치 시스템에 적용하여 본다. Mollet의 메시지 전송과 에이전트 이동은 FIPA에서 표준안으로 정의한 ACL을 사용함으로 다른 에이전트와의 효율성을 높이고 있으며 전송 과정에서 노출을 막기 위하여 암호화 기법을 이용한다. 이동성, 협상, 보안, 인증, 등록 등의 에이전트가 가지는 공통적인 속성과 각 에이전트만이 가지는 속성을 모듈화함으로서 확정성을 높을 수 있으며 JDBC 사용으로 데이터베이스와의 투명성을 제공하고 있다. 또, Mollet은 하나의 호스트가 서버와 클라이언트의 속성을 동시에 가질 수 있다. Mollet을 OS 버그 패치 시스템에 적용하여 사용자의 공식 패치 서버 검색을 자동화하고 신속하고 간편한 패치를 제공함으로 시스템의 보안과 신뢰도를 유지할 수 있고 시스템 관리자의 부담과 관리 비용을 줄인다.

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Isolation and Characterization of a Ds-tagged liguleless Mutant in Rice (Oryza sativa. L)

  • Ahn, Byung-Ohg;Ji, Sang-Hye;Yun, Doh-Won;Ji, Hyeon-So;Park, Yong-Hwan;Park, Sung-Han;Lee, Gi-Hwan;Suh, Seok-Cheol;Lee, Myung-Chul
    • Journal of Crop Science and Biotechnology
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    • v.11 no.4
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    • pp.237-242
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    • 2008
  • A liguleless mutant, which showed complete loss of lamina joint region at the junction between leaf blade and leaf sheath, was isolated from a Ds insertional mutants derived from the source cultivar, Dongjin. This mutant could not affect other developmental patterns like phyllotaxis. Southern blot analysis, using GUS as a probe, revealed that the liguleless mutant contained three Ds copies transposed in the rice genome. Among the four genomic sequences flanking the Ds, one was mapped in the intergenic region (31661640 - 31661759), and the other two predicted a protein kinase domain (12098980 - 12098667) as an original insertion site within a starter line used for massive production of Ds insertional mutant lines. Another predicted and inserted in first exon of liguleless 1 protein (OsLG1) that was mapped in coding region (LOC_Os04g56170) of chromosome 4. RT-PCR revealed that the OsLG1 gene was not expressed liguleless mutants. Structure analysis of OsLG1 protein revealed that it predicted transcription factor with a highly conserved SBP domain consisting of 79 amino acids that overlapped a nuclear localization signal (NLS). RT-PCR revealed that OsLG1 is mainly expressed in vegetative organs.

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Design and implementation of shipping electronic commerce agent in distributed computing environment (분산환경하에서 해운 전자상거래 에이전트 설계 및 구현)

  • Jang, Il-Dong;Wee, Seung-Min;Kim, Si-Hwa
    • Journal of Navigation and Port Research
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    • v.26 no.1
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    • pp.78-84
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    • 2002
  • In this thesis a shipping broker agent system, which can be executed by a CORBA-based environment using the distributed object technique, CORBA is designed and implemented Nowadays, while the EC system is extensive on the web, legacy host systems have limitations and its capacity-upgrade os required. In order to solve these problems the method that distributes programs into several computer systems can reduce their loads, set low system capacity and minimize network bottleneck. In this thesis using Agent Communication Language(ACL), we propose an agent based prototype and implement an intelligent agent prototype for ships search using CORBA, which can exchange and shiare data between different systems.

Effect of Organic Acids Addition during Salting on the Fermentation of Kimchi (배추의 소금절임시 유기산 첨가가 김치 숙성에 미치는 영향)

  • 박인경;김순희;김순동
    • Journal of the East Asian Society of Dietary Life
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    • v.6 no.2
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    • pp.195-204
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    • 1996
  • This study was conducted to enhance the shelf-life of Kimchi and to make the unique taste of Kimchi by fermentation control. Kimchis, Prepared by win baechu soaked in 10% salt solutions containing 0.2-0.3% organic acids (OS-Kimchi), acetic acid, citric acid (CA-Kimchi), lactic acid, its mixtures and formic acid+acetic acid+fumalic acid+malic acid+citric acid(FAFMC), were examined for pH, titratable acidify, sensory evaluation, the number of total microbe and lactic acid bacteria, content of organic acids and texture during fermentation at 1$0^{\circ}C$. The decrease of pH and the increase in acidity, CA-Kimchi showed lower than those of control and various OS-Kimchi. Total microbe, lactic acid bacteria, content of lactic acid of CA-Kimchi were lower than those of control. The hardness of CA-Kimchi measured instrumentally was higher than that of control. Sensory scores of CA-Kimchi were also lower than those of control, so the Kimchi maintained good crispness and overall taste.

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A RBAC-based Access Control Framework in OSGi Service Platform (OSGi 서비스 플랫폼에서 RBAC 기반의 사용자 접근제어 프레임워크)

  • Cho, Eun-Ae;Moon, Chang-Joo;Baik, Doo-Kwon
    • Journal of KIISE:Information Networking
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    • v.34 no.5
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    • pp.405-422
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    • 2007
  • Recently, according to the network environment, there are many researches for home network. Nowadays, in home network, the method that access control policy is managed for each home device by using ACL is popular, and EAM (Extranet access management) is applied as a solution. In addition, the research about secure OS is ongoing based on open operating system and the research of user authentication mechanisms for home network using home server is also in progress. However, these researches have some problems as follows; First, the transmission scope of expected access technology in home network is wide, so unauthenticated outside terminal can access the home network. Second, user is inconvenient because user need to set the necessary information for each device. Third, user privacy and convenience are not considered. OSGi provides a service platform for heterogeneous technologies in home network environment. Here, user access control is one of the core parts which should have no problems such as above items, but there are no concrete researches yet. Thus in this paper, we propose an access control policy management framework and access control operation based on RBAC for user access control in home network environment in which OSGi service platform is operated. First, we list the consideration which is not clearly mentioned in OSGi standard, and then we solve these above problems through new framework. In addition, we propose the effective and economical operation method which reduces the policy change frequency for user access control by using RBAC concept though limited resource of home gateway. Besides, in this paper, these proposed policies are defined separately as user-role assignment policy and permission-role assignment policy, and user decide their own policies. In conclusion, we provide the scheme to enhance the user convenience and to solve the privacy problem.