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활성슬러지 침전성 향상을 위한 활성탄 가중응집제 적용 연구
김용범,양혜지,최영균 대한상하수도학회 2021 상하수도학회지 Vol.35 No.2
The effects of activated carbon originated Ballasted Flocculant (BF) on the settleability of activated sludge and the recovery of BF by Hydro-cyclone (HC) were analyzed experimentally. Two kinds of BF (M-I: 125-250 μm, M-II: 250-425 μm in dia.) and three kinds of activated sludges with different SS concentration (2,300-7,100 mg/L) were applied for this study. With the dosage variation of BF from 0.14 to 1.3 g-BF/g-SS, we could obtain 24-31% improvement in SV30 (Sludge Volume after 30min sedimentation) for the lowest SS concentration sludge (2,300 mg/L). Whereas the SV30 improvement was much higher as 44-48% for the highest SS concentration sludge (7,100 mg/L). The settling characteristics of the sludge with BF followed Vesilind model the best among three models (Vesilind, Takacs and Cho model). HC could effectively separate BF with the separation efficiency of 70-90% and over 95% separation efficiency could be obtained when the HC was applied twice.
기업의 내부마케팅활동과 서비스품질이 종업원의 직무만족 및 고객지향성에 미치는 영향에 관한 연구 -D사 골프장을 대상으로
김용범,류인모 대한안전경영과학회 2013 대한안전경영과학회 학술대회논문집 Vol.2013 No.04
Competition to attract customers to the increase of the golf club, but the less people enjoying golf for a variety of issues, including the economic downturn, so golf is going deepened. Therefore, the local golf club is faced with the difficulty of management. In the case of the golf club human resource is the most important factor, because it has a high labor intensive nature of the industry as a type of facilities and services on the basis of intangible human resources. In this paper, to confirm the internal marketing activities and internal service quality, basic premise is that for an external customer satisfaction, internal customer satisfaction should be preceded, and try to analyze these execution factors on job satisfaction and customer orientation, either directly or indirectly affected. The empirical results, the management support in the internal marketing activities were the factors affecting the intrinsic job satisfaction, and the internal service quality were factors affecting employees of the intrinsic job satisfaction and extrinsic job satisfaction.
김용범 순천향대학교 순천향의학연구소 2016 Journal of Soonchunhyang Medical Science Vol.22 No.2
We report a case of double-layered lateral meniscus, where an accessory proximal hemimeniscus was overlying the body and posterior horn of the lateral meniscus. The double-layered meniscus arises proximal and parallel to the normal lateral meniscus with its periphery dissociated from the capsule and was significantly thinner and more mobile than its underlying true lateral meniscus. The accessory hemimeniscus was resected arthroscopically.
정보기술 e-서비스품질의 이용자 지각과 이용의도에 관한 연구
김용범,이미정 대한안전경영과학회 2009 대한안전경영과학회 학술대회논문집 Vol.2009 No.04
Recently the information system introduction and the application which use the computer are increasing. The efficient operation of information system helps corporations to improve productivity, customer service and corporate competitive power. SaaS(Software as a Service), which is the developed type of outsourcing in the area of information technology, is to use standardized and packaged application by hosting from the outside of enterprise. SaaS is not developed yet as much as people's interest about that in the initial stage, but its related technology and service capacity are accumulated after repeated trial and error, and it's ready to activate the industry. In the area of information system, studies on the measurement of service quality were followed. But there is little study on service quality measurement in the field of SaaS(Software as a Service). The purpose of this study was to divides the SaaS with e-SERVQUAL and it consider the relationship with the perceived recognition and the usage intention. According to this, variables of traditional research were rejected because SaaS is not developed yet in Korea. But information had a strong effect on perceived recognition. Therefore, business related with in SaaS must have provided a correct information about various applications.