http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
모바일서비스가 조직성과에 미치는 영향에 관한 실증적 연구
최성용,이교엽 한국서비스경영학회 2003 서비스경영학회지 Vol.4 No.3
Considering the rapid growth of mobile devices, such as mobil e phones, PDA, etc., this study aimed to find out a proper model for the influence of mobile service system on the organizational performance. Genera lly the implementation of mobile service systems requires multi-dimensi onal activities related with hardware, software (information system), orgaware, and so on. To accomplish research objectives effectively in this study, the f actors influencing organizational performance were classified as four categories ; c o r p o r a t e 최성용이교엽서비스경영학회지 제4권 제3호 2003년 12월 18operational environment, enterpr ise information infrastructure, b u s i n e s application systems, and mobile services. Top management support and sys tem infrastructure is essential t o b o t h online information and mobile service systems. And mobile servi ce systems must be designed and implemented to meet organizational strateg y. Online information systems have more influence on the organizational p erformance than mobile service systems right now and must be previously co nstructed to implement mobile service systems.
개방형 유양돌기절제술 후 조기에 발생한 미로 누공 1예
최성용,김이혁 대한평형의학회 2016 Research in Vestibular Science Vol.15 No.3
Labyrinthine fistula refers to a condition caused by an abnormal connection between the inner ear and surrounding structures. Most cases of that occur as a result of a complication brought about by cholesteatoma. It may also be generated by long repeated infections of a mastoid cavity that has been exposed to the outside after canal wall down mastoidectomy (CWDM). The infection is usually repeated for several years or decades after surgery. Therefore, labyrinthine fistula after CWDM is known as a late complication. In this case, labyrinthine fistula occurred in two months after surgery due to postoperative infection. Although cholesteatoma was removed after CWDM and the horizontal semicircular canal (HSCC) was not damaged during the operation, this labyrinthine fistula was thought to develop very early after surgery. Two months after surgery, the patient complained of dizziness, we identified the opened bony labyrinth and damaged endosteum of the HSCC in the patient.Res Vestib Sci 2016;15(3):89-93
최성용,윤경구,김진웅,김용빈 한국방재학회 2010 한국방재학회논문집 Vol.10 No.4
High performance shotcrete has been recently researched partly as a result of high consensus on high strength and durability. However, they are very initial step compared from the advanced countries. For instance, they has been mainly on high strength or durability without any consideration on pumpability and shootability which are very crucial on workability. The purpose of this dissertation was to make a high performance wet-mix shotcrete (high workability) which would solve the general problems of wet-mix process in Korea. For this, the main experimental variables were selected to be silica fume(0.0, 4.5, 9%), air entrained agent(0.0, 0.005%). Rheology with IBB rheometer was measured for evaluating pumpability and shootability as well as pump pressure, rebound rate and build-up thickness. The conclusions from a series of experiments were as follow:The results of analyzing the effects of AE agent and silica fume on rheology indicated that AE agent reduced both of flow resistance(G) and torque viscosity(H) and silica fume increased flow resistance (G) and reduced torque viscosity(H). An increase in the value of torque viscosity(H) produces an increase in the requried pumping pressure. These result indicated that the reduction of torque would work better at improving pumpability. And an increase flow resistance(G) improved shootability(increase build-up thickness and reduce rebound). 최근 고강도 및 고내구성에 대한 인식이 높아지면서 고성능 숏크리트에 대한 연구가 일부 진행되기도 하였으나, 국외 선진국에 비하면 아직 초보 단계에 그치고 있다. 즉 강도와 내구성 평가만 일부 이루어졌고, 시공성을 대변하는 펌핑성능(Pumpability)과 뿜칠성능(Shootability)에 대한 평가가 전혀 이루어지지 않았다. 따라서 본 논문의 목표는 국내 습식 숏크리트의 고성능화에서 고시공성에 대한 연구로, 이를 위해 실리카 흄(0.0, 4.5, 9%), AE제(0.0, 0.005%)를 주요 변수로 하여 시공성 평가를 위해서 레오미터를 사용한 레올로지를 측정하였을 뿐만 아니라, 펌프압, 리바운드율, 붙임두께 등을 측정하여 비교 고찰 하였다. AE제와 고성능 감수제가 레올로지 특성에 미치는 영향을 고찰한 결과 AE제는 흐름저항(Flow Resistance, G)과 토크점성(Torque Viscosity, H)이 모두 일정하게 감소되었고, 실리카 흄은 흐름저항(G)은 증가 토크점성(H)은 감소한 결과가 나타났다. 펌핑성능과 레올로지 관계에서 토크점도(H)가 증가함에 따라 필요 펌핑 압송력이 상승하는 결과를 얻었고, 뿜칠성능과 레올로지 관계에서는 흐름저항(G)가 증가할수록 최대 붙임두께는 증대 리바운드율은 감소하는 경향을 얻었다.