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계획수립단계에서의 개발비용 예측을 위한 상대적 비용모형 (pp.102-110)
이춘열(Choon Yeul Lee),송운호(Woon Ho Song) 한국정보과학회 1984 정보과학회논문지 Vol.11 No.2
본 논문은 상대적 비용모험을 제시함으로써 계획수립단계에서의 개발비용 예측을 위한 대안을 제시하고자 하였다. 절대적 개발비용 예측을 위한 일반적 비용모형이 계획수립단계 적용시 지니는 문제점을 해결하고, 계획의 진행결과에 따라 새로운 산출자료에 의한 계획수정 방안을 제시함으로써 범기업적 중장기 정보체계개발계획의 수립 및 통제를 위한 일 수단을 제공하였다. This paper analyses the structure of Single Factor Cost Model and proposes the way to expand its applicability. We propose the Relative Cost Model. It uses relative information system size as a independent variable and relative development costs as a dependent variable. The Relative Cost Model makes it possible to estimate the software development costs of information systems development project with the system survey results in planning phase and to refine them as a rolling plan by adjusting the estimated costs to intermediate results as the project progresses.
SaaS 비즈니스 모델별 서비스 기업 경쟁력 결정 요인분석: 그룹웨어, POS 시스템, CRM 및 ERP를 중심으로
김신표,이춘열,Kim, Shin-Pyo,Lee, Choon-Yeul 한국디지털정책학회 2008 디지털융복합연구 Vol.6 No.2
Recently, software distribution method, along with advent of era of Web 2.0, is rapidly evolving from ASP(Application Service Provider) method into SaaS(Soft as a Service) method due to development in concepts and technologies including SOA(Service Oriented Architecture) Web Service, On Demand and Component. Determining factor in market competitiveness of newly emerging SaaS business model will be analyzed by focusing on Group-Wares, POS(Point of Sale) System, CRM(Customer Relationship Management) and ERP(Enterprise Resource Planning), which are the most representative SaaS business models in Korea. It is anticipated that the outcome of analysis of determining factors for market competitiveness for each of the main SaaS Business Models acquired through questionnaire survey can be utilized as important benchmarking material in setting the direction of cultivating SaaS market by the government as well as new entries into SaaS market.
김정철(Jeong-Cheol Kim),이춘열(Choon Yeul Lee),이상호(Sangho Lee) 한국IT서비스학회 2012 한국IT서비스학회지 Vol.11 No.S
There is a belief that timely and precise data are important to decisions and the better decisions are related to better firm performance. However, empirical research investigating the effect of data quality on firm financial performance is still scarce up to recently. Current study empirically explores such an effect of data quality on firm accounting performance in the Korean manufacturing industry during 2008~2010 with secondary data. The results show that better data quality does not impact on sales and operating profit, but positively and significantly impacts on EVA(Economic Value Added). Raising the level of data quality management maturity by one level can increase EVA by about 34% in manufacturing firms.
마스터데이터관리 이해도가 국방 마스터데이터관리시스템 수용에 미치는 사용자 집단별 차이 분석
김정철(Jung-Cheol Kim),이춘열(Choon Yeul Lee),이인석(Lee In Seog),강희주(Hee Joo Kang) 한국데이타베이스학회 2013 Journal of information technology applications & m Vol.20 No.1
It has been found that users" characteristics are important variables that explain information systems adoption. These user groups, which are called COIs (Community Of Interests), might show different behaviors to each other to the same information system. We study differences in MDM (master data management) system adoption between military users and SI developers using TAM (Technology Acceptance Model). In case of military users, the perceived usefulness of an MDM system does not have impacts on intention to use an MDM system. Only the ease of use of an MDM system has impacts on intention to use an MDM system. However, in case of SI developers, both the perceived usefulness and the ease of use of an MDM system have impacts on intention to use an MDM system, which are similar to findings in previous studies. These results might be interpreted that users do not pay much attention to the usefulness in adopting a new information system in a centralized organization. They are obligated to use an information system whether it is useful or not. Thus the ease of use has more impacts on users than the usefulness.
신의섭(Euiseob Shin),민병권(Byoung Kwon Min),이춘열(Choon Yeul Lee) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.1
한국통신 소프트웨어연구소에서는 통합 프로그래밍 지원도구로써 LACE (Language Associated Common Editor)를 설계, 개발하였다. 본 논문에서는 LACE개발을 위하여 채택한 모형을 소개하고, 통합프로그래밍 지원도구인 LACE가 개별적 프로그래밍 도구들에 대하여 지니는 장점을 비교제시한다.
인터넷 쇼핑몰의 사이트 특성과 사용자의 특성이 지각된 위험과 구매의도에 미치는 영향
정승렬 ( Seung Ryul Jeong ),강영신 ( Young Shin Kang ),이춘열 ( Choon Yeul Lee ) 한국정보처리학회 2007 정보처리학회논문지D Vol.14 No.4
The purpose of this study is to examine the effects of the site characteristics and the customer characteristics of Internet shopping malls on perceived risk and purchase intention. In order to fulfill this objective, we employ the survey methodology to gain data and analyze them using a structural equation model. The results of this study show that both the site characteristics and the customer characteristics of Internet shopping malls did not have a direct effect on purchase intention. Instead, perceived risk has effects on purchase intention. This implies that perceived risk is playing an important role in e-commerce.