• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권6호
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• pp.2050-2077
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• 2015

One of the major issues in emerging cloud management system needs the efficient service level agreement negotiation framework, with an optimal negotiation strategy. Most researchers focus mainly on the atomic service negotiation model, with the assistance of the Agent Controller in the broker part to reduce the total negotiation time, and communication overhead to some extent. This research focuses mainly on composite service negotiation, to further minimize both the total negotiation time and communication overhead through the pre-request optimization of broker strategy. The main objective of this research work is to introduce an Automated Dynamic Service Level Agreement Negotiation Framework (ADSLANF), which consists of an Intelligent Third-party Broker for composite service negotiation between the consumer and the service provider. A broker consists of an Intelligent Third-party Broker Agent, Agent Controller and Additional Agent Controller for managing and controlling its negotiation strategy. The Intelligent third-party broker agent manages the composite service by assigning its atomic services to multiple Agent Controllers. Using the Additional Agent Controllers, the Agent Controllers manage the concurrent negotiation with multiple service providers. In this process, the total negotiation time value is reduced partially. Further, the negotiation strategy is optimized in two stages, viz., Classified Similarity Matching (CSM) approach, and the Truncated Negotiation Group Gale Shapely Stable Matching (TNGGSSM) approach, to minimize the communication overhead.

• 산학경영연구
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• 제18권1호
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• pp.43-57
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• 2005

본 연구에서는 우리나라의 증권시장의 자료를 이용하여 브로커와 정보거래자가 동시에 거래하는 전략적 거래모형들의 기본적인 가정에 관한 타당성을 경험적으로 분석하였다. 이론적 연구를 간단히 요약한 뒤 관련되는 경험적 연구들을 외국의 연구와 국내의 연구로 나누어 정리하였다. 우리나라의 KOSPI 200 주가지수 선물시장에서 2001년부터 2003년까지 3년간 737일 간의 일별 거래현황 자료를 이용한 실증분석의 주요한 결론은 다음과 같다. 첫째, 동기간 동안의 평균적 거래로 보아 외국인과 증권회사 간의 거래는 김승탁(2000) 모형의 정보거래자와 브로커의 거래와 일치하는 반면에 증권회사와 개인의 거래결과는 김승탁 모형의 가정과 일치하지 않았다. 둘째, 각 유형별 투자자들의 비기대순매수량 증가율 간의 교차상관함수 분석을 통하여 2001년과 2003 기간 중 일별거래 전체에서는 외국인과 증권회사, 그리고 개인은 특별히 서로 상관된 거래를 수행한다는 증거를 찾을 수는 없었다. 셋째, 비기대순매수량의 변화가 가장 큰 30개 거래일과 가장 적은 30일 동안의 외국인투자가, 증권회사 및 개인투자가 등 각 유형별 투자자들의 거래 형태에 관한 적합도 검정을 통하여 각 당사자들의 거래는 서로 상관성이 있다는 것을 알 수가 있었다. 이를 통하여 김승탁 모형의 기본적 가정의 타당성을 간접적으로 지지하였다. 마지막으로 본 연구의 한계점과 앞으로의 연구방향을 제시하였다.

• 대한산업공학회지
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• 제39권1호
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• pp.20-29
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• 2013

Medical errors such as adverse drug event, improper transfusion, wrong-site surgery, mistaken patient identity and so on commonly occur at health care practice. Information technology, like Drug Utilization Review(DUR) system which reviews, analyzes, and interprets medication data when prescribing, can play a key role in reducing such medical errors and improving patient safety. Korean Government has guided all hospitals to implement concurrent DUR(cDUR) system, which is the first case worldwide in that all healthcare providers have to use cDUR system when prescribing. This paper introduced a case study that a tertiary hospital has integrated the cDUR system into its comprehensive Hospital Information System(HIS) and analyzed the whole prescription data during a week right after adoption of cDUR system. Considering technical strength and weakness, the cDUR system was integrated into the HIS, using Broker Servers for minimizing doctors' anxiety. As the quantitative analysis of the whole prescription data, DUR conflict events, which mainly included duplicate medications and contra-indicated drug interactions for outpatients, were 2.77%. Although only 0.7% is for the contra-indicated drug interactions, it will be greatly devoted to achieve the purpose of DUR such as improving patient safety.

• 한국전자거래학회지
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• 제4권1호
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• pp.145-157
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• 1999

The challenge is to maximize the time-to-market benefits of concurrent engineering while maintaining control of data and distributing it automatically to the people who need it when they need it. The way PDM systems cope with this challenge is that master data is held only once in a secure vault where its integrity can be assured and all changes to it monitored, controlled and recorded. The structure of PDM is various from vendor, but they have common module. That is PDM and it is most important. The goal is to design the workflow in PDM using object-oriented modeling method. The past methods have concentrated on the flow between workflow engine and agent, but this paper will focus on task. We will model task as individual object. This paper uses OMT(Object Modeling Technique) by James Rumbaugh for base modeling tool and uses DCOM(Distributed Component Object Model) for base ORB(Object Request Broker). Research object is to design the static object model, to design state change by dynamic model and to design data transition by functional model.