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콘크리트용 잔골재로서 석탄가스화복합발전 슬래그의 활용성 검토 - 물리적 성질 및 유해물질 함유량 특성을 중심으로 -
현승용 ( Hyun Seong-yong ),한준희 ( Han Jun-hui ),이재진 ( Lee Jae-jin ),신용섭 ( Shin Yong-sub ),한민철 ( Han Min-cheol ),한천구 ( Han Cheon-goo ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
This study is a fundamental consideration for using CGS from the IGCC as a fine aggregate for concrete. For the review, the physical properties and hazardous materials content of KS F 2527 were considered. The results showed that KS F 2527 standard was generally satisfied, making it possible to confirm the possibility that it is a fine metal considering its physical properties and hazardous materials content characteristics.
현승용(Seung Yong Hyun),최민철(Min Cheol Choi),옌홍(Yan Hong) 한국무역연구원 2015 무역연구 Vol.11 No.2
This study investigates the operational efficiency between the major airlines of two countries: China and Korea. We consider three major Chinese airline companies, namely, Air China, China Southern Airlines, and China Eastern Airlines, and two major Korean companies, specifically, Korean Air and Asiana Airlines for this comparative study. In examining the relative operational efficiency of these airlines, we considered both passenger transport and freight shipment. In addition, among these five airline companies, we evaluated the output performance based on the operating input factors using Data Envelopment Analysis (DEA). Five input factors consisted of the human aspects (amount of labor and labor cost), physical capacity aspects (available seat kilometer and available ton kilometer), and operating expenses. The output factors include revenue passenger kilometer, revenue ton kilometer, and flight revenue. Output performance was analyzed according to the base of the three separate categories of operating input aspects using DEA, and each of the five airline companies was evaluated and compared in terms of relative operational efficiency, respectively. The comparative analysis showed which airline companies were relatively inefficient in terms of which categories of input aspects. At the end of this study, we suggested performance improvement directions in order to achieve higher operating efficiency for each of the five airline companies.
BPR을 통한 조선기자재업체의 ERP 시스템 설계와 구현에 관한 연구
현승용(Seung-Yong Hyun),노승수(Seung-Soo Noh) 한국생산관리학회 2012 한국생산관리학회지 Vol.23 No.4
본 연구는 중소 조선기자재업체를 대상으로 실제 ERP 시스템을 프로세스별로 설계하고 구축하는 전 과정을 제시하고, 시스템 구현 효과와 구현 과정에서 나타난 문제점에 대해 다루고 있다. 조선기자재업체의 업무특성에 맞는 고객맞춤 설계의 구체화에 주안점을 두고, BPR을 통하여 현행 업무프로세스(AS-IS)를 세분화하여 분석하고, GAP(문제점 및 요구사항)을 도출하여 대응방안을 모색하고, 이에 따른 개선 프로세스(TO-BE)를 확정하는 ERP 시스템 설계 및 구축 과정을 단계별로 구체화 하였다. 영업관리, 구매/자재관리, 그리고 생산관리의 업무프로세스를 중점적으로 연계한 ERP 시스템을 통하여 중소 조선기자재업체의 ERP 시스템 구현 효과를 측정하였고 더불어 시스템 구축과 구현 과정에서 발생한 애로점 및 해결 방안을 통해 실무적 가이드라인을 제공코자 하였다. This study deals with the details of designing and implementation processes of ERP system for the medium sized shipbuilding materials company. Focusing on the customization design for the shipbuilding material work process flows, the ERP system, which consists of sales, purchasing/ materials, and production modules, is introduced using the full range of BPR(Business Process Reengineering). Through the BPR phases, series of the AS-IS analysis, the GAP analysis, and the TO-BE process are conducted and the subsequent ERP systems is developed. For construction of ERP system, the entire processes of this shipbuilding materials company are redesigned and are fully integrated among the it's relevant departments. After the initial system development, the ERP system has been implemented for two years along with the system adjustment and tuning processes. At the end, the study shows the result of system performance, and also provides the trouble shooting issues which are found during the designing and implementation phases.
리젝트애시를 사전혼합골재로 활용시 AE제에 의한 공기량 확보방안
현승용 ( Hyun Seong-yong ),문병룡 ( Moon Byong-yong ),이제현 ( Lee Jea-hyeon ),장덕배 ( Jang Dik-bae ),한민철 ( Han Min-cheol ),한천구 ( Han Cheon-goo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
This paper is to provide a method to prevent air loss of the concrete using reject ash based ternary blended aggregate due to absorption of AE agents by reject ash by adding AE agents into reject ash before mixing concrete. Test results indicate that air loss due to presence of reject ash in ternary blended aggregate can be recovered by over use of AE agents into aggregate directly before mixing.
대형할인마트에서 서비스 품질과 지각된 서비스 가치, 이미지 그리고 만족도간의 상호영향에 관한 연구
현승용(Hyun, Seung Yong),이진수(Lee, Jin Su) 동아대학교 경영문제연구소 2009 經營論叢 Vol.30 No.-
This study deals with the effect of service quality on the relationship among the perceived service value, the related image, and service satisfaction in the discount store. Using SPSS and AMOS, the experiment is analyzed and the followings are shown. First, the service quality of major discount store has a positive effect on the related perceptual service value. Second, the service quality has a positive effect on the related image. Third, the service quality causes no effect on the related satisfaction. Fourth, the perceptual service value has no effect on the related satisfaction. Fifth, the perceptual service value has a positive effect on the related image. Finally, the image of major discount store has a positive effect on the related satisfaction.
화력발전부산물을 골재로 사전혼합한 혼합골재 고강도 모르타르의 공학적 특성
현승용 ( Hyun Seong Yong ),백철 ( Baek Cheol ),이제현 ( Lee Jea Hyeon ),박구병 ( Park Goo Byeong ),한민철 ( Han Min Cheol ),한천구 ( Han Cheon Goo ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
In this research, in order to improvement the performance of the two-component mixed aggregate mixed with fine granite fine aggregate and seawater, the examination of the effect of reject ash on the cement mortar according to the change of substitution rate was done. As a result, it was found that the effect of improving the compressive strength is more effective when the rejection ash is replaced by 5% in the mixed aggregate than in the case of using the high quality aggregate.