• Title/Summary/Keyword: SLA

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아웃소싱의 서비스 수준 협약 : 개념적 모형과 성공 요인에 관한 연구

  • Kim Se Han;Nam Gi Chan;Kim Seung Yun
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.05a
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    • pp.312-319
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    • 2003
  • In late 90s, organizations recognized the information technology as an key enabler of the business strategic accomplishment which lead them heavy increment on IT investment. These organizations tried to hold the competitive advantage by focusing on their core competency. And these acts raise their interests on IT outsourcing. Recent trends of the organizations concern on evaluating the effectiveness of the previous IT investment and the reasonable selection on IT investment type. Also, the objective evaluation of the service level and continuous improvement are major concern of the outsourcer. Consequently, interests on Service Level Agreement (SLA), an immanence operating tool for managing the level of the information system service objectively and qualitatively, were raised among IT outsourcing service providers, outsourcers, and operating departments. Yet, only a few domestic conglomerates adopted the SLA, and exact usage of the SLA is currently unknown. Because of the importance of the SLA between a service provider and an outsourcer, the agreement is treated with high confidentiality. This raised the problems to both the private and public organizations, are considering the SLA, with absence of concrete guide line to internalize SLA management process. This study provides the organizational and environmental factors of the adopting and applying the Service Level Agreement (SLA) by conducting multiple case research. The sampled companies are currently implementing the SLA over 1 year of usage period. Factors were used to provide the operational contribution for implementing the SLA. The study also provides the effects on IT performance through the SLA. For this, in depth interview was conducted for each sampled company. As a result, if SLA between outsourcer and service provider can be used as an immanence operation tool and actively implemented, SLA will be an strategic tool for various decision making in IT management practice with long term relationship, better shared partnership, and continuous service improvement.

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Development of S-SLA's Grading Indicator based on the Analyses of IPS's Security Functions (침입차단서비스 보안기능 분석을 통한 보안SLA 등급화 지표 개발)

  • Yi, Wan-Suk;Go, Woong;Won, Dong-Ho;Kwak, Jin
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.20 no.6
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    • pp.221-235
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    • 2010
  • Internet service providers provide various security services, such as firewall, intrusion detection, intrusion prevention, anti-virus, along with their main Internet services. Those security service users have no idea what kind of quality services they are guaranteed. And therefore, Internet users interest in Security Service Level Agreement(SLA) increases as their interest in secure Internet service increases. However, there wasn't any researches in the S-SLA area domestically and there are only limited SLA indexes related to system or service maintenances at the moment. Therefore, this paper analyses security functions in IPS services and categorize them into common and independent security functions. Finally to improve quality of security services, this paper proposes S-SLA indexes depending on the different security levels. This will be subdivide into agreement on security service.

Analysis of Swine Leukocyte Antigen Haplotypes in Yucatan Miniature Pigs Used as Biomedical Model Animal

  • Choi, Nu-Ri;Seo, Dong-Won;Choi, Ki-Myung;Ko, Na-Young;Kim, Ji-Ho;Kim, Hyun-Il;Jung, Woo-Young;Lee, Jun-Heon
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.3
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    • pp.321-326
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    • 2016
  • The porcine major histocompatibility complex (MHC) is called swine leukocyte antigen (SLA), which controls immune responses and transplantation reactions. The SLA is mapped on pig chromosome 7 (SSC7) near the centromere. In this study, 3 class I (SLA-1, SLA-3, and SLA-2) and 3 class II (DRB1, DQB1, and DQA) genes were used for investigation of SLA haplotypes in Yucatan miniature pigs in Korea. This pig breed is a well-known model organism for biomedical research worldwide. The current study indicated that Korean Yucatan pig population had 3 Class I haplotypes (Lr-4.0, Lr-6.0, and Lr-25.0) and 3 class II haplotypes (Lr-0.5, Lr-0.7, and Lr-0.25). The combinations of SLA class I and II haplotype together, 2 homozygous (Lr-4.5/4.5 and Lr-6.7/6.7) and 3 heterozygous (Lr-4.5/6.7, Lr-4.5/25.25, and Lr-6.7/25.25) haplotypes were identified, including previously unidentified new heterozygous haplotypes (Lr-4.5/4.7). In addition, a new SLA allele typing method using Agilent 2100 bioanalyzer was developed that permitted more rapid identification of SLA haplotypes. These results will facilitate the breeding of SLA homozygous Yucatan pigs and will expedite the possible use of these pigs for the biomedical research, especially xenotransplantation research.

SLA Homozygous Korean Native Pigs and Their Inbreeding Status Deduced from the Microsatellite Marker Analysis

  • Jung, Woo-Young;Lim, Hyun-Tae;Lim, Jae-Sam;Kim, Sung-Bok;Jeon, Jin-Tae;Lee, Jun-Heon
    • Journal of Animal Science and Technology
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    • v.52 no.6
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    • pp.451-457
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    • 2010
  • The porcine MHC (Major Histocompatibility Complex), encoding the SLA (Swine Leukocyte Antigen) genes, is one of the most significant regions associated with immune rejection in relation to transplantation. In this study, three SLA class I (SLA-1, SLA-3, SLA-2) loci and three SLA class II (DRB1, DQB1, DQA) loci were investigated in the previously unidentified Korean native pig (KNP) population that was closely inbred in the Livestock Technology Research Station in Cheongyang, Korea. Total thirteen KNPs from four generations were genotyped for the SLA alleles and haplotypes were investigated using PCR-SSP (Sequence-Specific Primer) method. The results showed that all of these KNPs had Lr-56.30/56.30 homozygous haplotype, indicating high level of inbreeding in the SLA genes. The inbreeding status of these animals was also investigated using microsatellite (MS) markers. From the 50 MS markers investigated, 17 MS markers were fixed in all generations and the fixed alleles are increased as 26 loci for the fourth generation. Two MS markers, S0069 and SW173, were heterozygous for all the animals tested. Observed and expected heterozygosities were calculated and the average inbreeding coefficients for each generation were also calculated. In the fourth generation, the average inbreeding coefficients was 0.732 and this may increase with further inbreeding process. Analysis of the SLA haplotypes and MS alleles can give important information for breeding the pigs for xenotransplantation studies.

A Specification and Exchange Method for Supporting SLA in SaaS Environment (SaaS 환경에서 SLA 보장을 위한 명세 및 교환 방법)

  • Nam, Taewoo;Kang, Taejun;Jang, Moonsoo;An, Youngmin;Yeom, Keunhyuk
    • Journal of Software Engineering Society
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    • v.26 no.2
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    • pp.45-52
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    • 2013
  • A cloud computing service provider must assure Service Level Agreement (SLA) to provide reliable and consistent quality of service to a user. The SLA is a contract between the user and the service provider that connects to assure constant level such as availability to target provided service. The cloud computing is classified into IaaS, PaaS, and SaaS according to IT resources of the various cloud service. The existing SLA is difficult to reflect quality factors of service because it only considers factors about the physical Network environment. In this paper, we suggest the UDDI-based interchange process with the architecture and the specification language having a XML schema for the SLA specification. The quality requirements of SaaS are defined by a proposed specification language in the cloud environment. It is stored in the repository of a quality specification and exchanged on during the service binding time based on the exchange architecture.

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A SLS mapping to SLA service (SLA 서비스에 대한 SLS 매핑)

  • Park, Sangjoon;Lee, Jongchan;Shin, Sungyun;Park, Gihong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.593-594
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    • 2013
  • This paper proposes a scheme of SLS mapping on SLA. To consider the service quality for SLA construction SLS should be considered. Through the SLS the quality parameter of network service will be determined.

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Data Transforming Function of Communication Module in SLA System (SLA 시스템 통신 모듈의 데이터 변환 기능)

  • 고은진;이길행
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.10c
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    • pp.217-219
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    • 2003
  • 네트워크 사용자들의 다양한 요구를 수용하고 신뢰성이 있는 서비스를 제공하기 위하여 많은 통신 사업자들은 SLA(Service Level Agreement)를 제공하고자 하고 있다. 통신 사업자들은 다양한 네트워크 서비스를 제공하고 있으며 각 네트워크 서비스에 대한 SLA를 제공하기 위한 SLA 시스템은 유연한 구조를 가져야 한다. 이에 .NET 기반에서 SLA 서비스 제공에 필요한 기능들을 설계하고 내/외부 정보 송수신을 위하여 XML(extensible Markup Language) 문서를 사용한다. 이런 구조에서 내부 모듈간 혹은 외부 시스템과의 정보 송수신을 담당하는 IB(Information Broker)라는 모듈을 정의하였다. IB가 수신하는 다양한 형식의 XML 문서를 SLA 시스템 내부에서 사용하는 공통 형식으로 변환하여 사용해야 하며 이를 담당하는 XML 문서 변환 기능에 대하여 본 논문에서 논의하고자 한다.

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SLA Parameter Measurement Of Policy Routing Network (Policy Routing Network에서의 SLA 파라메터 측정)

  • Shim, Hoi-Jung;Nam, Ji-Seung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2001.10b
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    • pp.1597-1600
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    • 2001
  • In-Service-Monitoring을 통하여 네트웍 계층에서 성능저하와 전달되어지는 QOS의 영향을 감시하여 Pro-Active 매니지먼트가 가능하다. 그 결과로서 SLA 보증을 위반하기 전에 성능저하를 조기 발견하여 행동을 취한 수 있게 한다. 본 논문에서는 사용자의 요구조건을 만족하기 위한 네트웍의 구성과 SLA 측정의 제약조건들을 고려하고 Policy Based Routing이 적용되는 네트웍에서 Technology-Specific Parameter인 IP Packet Loss Ratio, IP 패킷전송지연, 패킷지터, 가용도등의 SLA Parameter를 측정하였다.

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Protection Scheme Guaranteeing the Recovery Time Defined in Service Level Agreement in WDM Mesh Networks (WDM Mesh 네트워크에서 SLA 복구시간을 만족시키는 보호기법)

  • Hong, Kiwon;Yim, Taihyong;Kyung, Yeonwoong;Park, Jinwoo
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.39B no.1
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    • pp.41-43
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    • 2014
  • In this paper, we proposed a new protection scheme of the WDM mesh networks that can utilize the network resources efficiently while satisfying with the recovery time defined in the SLA (service level agreement). The protection scheme and the backup path are selected based on the comparison of the expected protection time with the SLA recovery time. The superior performance of the proposed protection scheme was demonstrated by comparing with ones of the existing protection schemes.