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장길상,송정수 경성대학교 산업개발연구소 2013 산업혁신연구 Vol.29 No.4
최근 많은 기업들은 경쟁력 향상을 위하여 경영혁신기법으로 꾸준히 6시그마를 추진하고 있다. 이러한 경영환경에서, 본 연구에서는 6시그마 성공요인(최고경영층의 지원, 교육 및 훈련, 성과보상, 고객 및 품질중심의 사고)이 흡수역량과 기업성과에 미치는 영향과 그 과정에서 흡수역량의 매개 작용에 관하여 연구하였다. 연구목적을 달성하기 위하여, 울산시에 소재하고 있는 ‘H’ 기업에 근무하는 종업원 221명의 응답을 표본으로 SPSS 18.0을 이용하여 검증하였다. 연구결과, 최고경영층의 지원을 제외한 나머지 다른 6시그마 성공요인의 모든 하위차원들은 흡수역량에 통계적으로 유의한 정(+)의 영향을 미치고 있는 것으로 나타났으며, 흡수역량은 기업성과에 통계적으로 유의한 정(+)의 영향을 미치고 있는 것으로 나타났다. 또한 최고경영층의 지원을 포함한 6시그마 성공요인의 모든 하위차원들은 기업성과에 통계적으로 유의한 정(+)의 영향을 미치고 있는 것으로 나타났다. 마지막으로, 최고경영층의 지원을 제외한 나머지 다른 6시그마 성공요인의 모든 하위차원들과 기업성과 사이의 관계에 있어서 흡수역량이 부분 매개 작용을 하는 것으로 나타났다. 이러한 결과는 기업의 경쟁력 우위확보를 위한 기업성과를 제고하기 위하여, 6시그마 성공요인의 기반 하에 조직구성원의 흡수역량을 강화해야 함을 시사하고 있다.
이벤트 중심의 시나리오 기반 정보시스템 개발 방법론의 적용에 관한 사례 연구
장길상,이원조 대한안전경영과학회 2018 대한안전경영과학회지 Vol.20 No.2
Recently, most of the information system use environment is changing to GUI environment based on windows and web. Most of the development tools for building such a GUI-based information system support object-oriented and event-driven programming concepts. However, there is still a lack of a development methodology that systematically supports event-based information system construction. From a business perspective, an information system is one that supports business processes efficiently and effectively to improve business performance. These business processes are composed of business activities which involve a series of business events. A business event is executed according to a business scenario. Therefore, it is necessary to grasp these events in the requirements analysis stage and to apply it on the system development methodology. However, information systems development methodology which systematically reflect the event processing concept still is insufficient. From this viewpoint, this paper proposes an event-driven scenario-based development methodology that can meet the recent development environment of information systems, and applies the proposed methodology to a small scale information system development case.
전자상거래 환경하에서 연관규칙과 이동경로를 발견하는 데이터마이닝 기법
장길상,이종섭 한국산업경영시스템학회 2003 한국산업경영시스템학회 학술대회 Vol.2003 No.춘계
We study data mining technique in an electronic commerce. Customers travel web pages in an shopping mall and they sometimes purchase products. It is important for a web master in a shopping mall to know customer"s purchasing patterns. We discover both association rules among customer"s purchasing products and customer"s traversal paths. We propose three phase mining technique to explore it. In the first phase, it find large items from sales database. In the second phase, it add to traversal paths. In the third phase, it discover associations rules from large items.
6시그마 성공요인이 변화관리활동과 경영성과에 미치는 영향
장길상,안완준 대한안전경영과학회 2017 대한안전경영과학회지 Vol.19 No.3
This study is an empirical study on the relationships among success factors of six sigma (support of top management, education and training, performance-based reward, customer and quality focused thought) on change management activity and business performance. In particular, mediating effect of change management activity on the relationship between success factors of six sigma and business performance is empirically analysed to find causes and impacts among these variables. The study results are as follows: First, there were positive relationships between critical success factors of six sigma(except support of top management) and change management activity. Second, there was also a positive relationship between change management activity and business performance. Third, there were also positive relationships between critical success factors of six sigma and business performance. Finally, change management activity was partial mediating effects on the relationship between critical success factors of six sigma(education and training, performance-based reward, customer and quality focused thought) and business performance. On the other hand, support of top management had no mediating effect on business performance.
장길상,박희현 대한안전경영과학회 2015 대한안전경영과학회지 Vol.17 No.1
This study is an empirical study on the relationships among success factors of six sigma(support of top management, education and training, performance-based reward, customer and quality focused thought), job satisfaction, and quality performance. In particular, mediating effect of job satisfaction on the relationship between success factors of six sigma and quality performance is empirically analysed to find causes and impacts among these variables. A survey was conducted on the employees working in ‘H’ company which is applying six sigma at Ulsan City. The survey questionnaires were sent to 300 people and 216 of them were returned. Data obtained was analyzed with SPSS 18.0. The study results are as follows: First, there were positive relationships between critical success factors of six sigma(except support of top management) and job satisfaction. Second, there was also a positive relationship between job satisfaction and quality performance. Third, there were also positive relationships between critical success factors of six sigma(except support of top management) and quality performance. Finally, job satisfaction were full mediating effects on the relationship between critical success factors of six sigma(education and training, performance-based reward) and quality performance. Critical success factors of six sigma(customer and quality focused thought) had a partial mediating effect on quality performance. On the other hand, support of top management had no mediating effect on quality performance.
층상 혼합금속산화물 촉매에 의한 N2O 분해에서 Ceria 첨가 및 CO 환원제의 영향
장길상,양기선 한국청정기술학회 2010 청정기술 Vol.16 No.4
온실가스로 알려진 N2O의 촉매 분해는 최소한 670 K 이상의 온도가 요구되는 난해한 공정으로 알려져 있다. 본 연구는 CO 환원제와 더불어 473 K의 저온에서도 N2O를 전량 분해될 정도로 높은 활성을 나타내는 혼합금속산화물(mixed metal oxide: MMO) 촉매에 Ce을 첨가함으로서 나타나는 N2O 분해활성에의 영향을 검토하기 위하여 수행되었다. MMO 촉매는 Co 및 Al 외에 Rh과 Pd을 사용하고, 여기에 Ce을 미량 첨가하여 공침전법으로 제조하였으며, 결과적으로 Ce 함량이 증가함에 따라 촉매 표면적은 감소하고 N2O의 직접분해 활성이 감소하는 현상이 나타났다. 그러나 CO 환원제의 분위기 하에서는 이러한 활성 감소를 상쇄하고도 남을 정도의 높은 N2O 분해활성을 나타냈으며 Ce 첨가비율에 따른 활성저하도 줄일 수 있어서 MMO 촉매의 물리적 안정성 증대를 위해 Ce을 첨가할 경우 CO 환원제에 의한 N2O 환원 반응계의 활성 안정성도 유지될 수 있는 것으로 확인되었다. Nitrous oxide (N2O) is a greenhouse material which is hard to remove. Even with a catalytic process it requires a reaction temperature, at least, higher than 670 K. This study has been performed to see the effects of Ce addition to the mixed oxide catalyst which shows the highest activity in decomposing N2O completely at temperature as low as 473 K when CO is used as a reducing agent. Mixed metal oxide(MMO) catalyst was made through co-precipitation process with small amount of Ce added to the base components of Co, Al and Rh or Pd. Consequently, the surface area of the catalyst decreased with the contents of Ce, and the catalytic activity of direct decomposition of N2O also decreased. However, in the presence of CO, the activity was found high enough to compensate the portion of activity decrease by Ce addition, so that it can be ascertained that the catalytic activity and stability can be maintained in the CO involved N2O reduction system when Ce is added for the physical stability of the catalyst.