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RISS 인기검색어
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- 저자 : 송수영(Sooyoung Song) (검색결과 4 건)
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AMESim 해석을 통한 습식 DCT 유압제어시스템 신뢰성 검증
송수영(Sooyoung Song),이흥규(Heungkyu Lee),장인섭(Insub Jang),류완식(Wanshik Ryu) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
An analysis approach about new 8 speed wet dct hydraulic system is possible for understanding real hydraulic control system by AMESim. This method is useful to materialize hydraulic control concept and hydraulic circuit before trial & error . The AMESim models of hydraulic control system make engineer to search optimized system and to solve any problem. System analysis model by AMESim is enough to verify real wet DCT control system reliability before lab-test and real drive test.
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송수영 ( Sooyoung Song ) 한국금융공학회 2016 금융공학연구 Vol.15 No.4
이 논문에서는 금융소비자 이용자들의 경제적 환경 등의 변화로 인하여 금융소비자의 유보효용이 변동하면 금융소비자의 참여제약조건이 사후적으로 변하게 된다. 이때 최적 금융계약이 어떻게 변하는 지 연구하였다. 금융서비스의 이용가치가 높을수록 금융소비자의 비용지급은 높아지고 위험은 증가한다. 즉 이런 금융소비자는 금융기관에게 역선택 비용을 발생시키게 된다. 이 역선택 문제를 해결하기 위하여 금융기관은 스펜스 멀리스 기제에 따른 차별화 가격을 제시하여 분리 균형 가격을 소비자에게 제시할 수 있다. 경제가 상대적으로 안정적일 때 금융기관은 이런 다양한 계약 메뉴를 제공하여 성공적으로 차별화가 가능해 진다. 그러나 경제 전반에 걸친 충격이 발생하고 이에 대한 영향이 금융소비자에게 비대칭적으로 영향을 미치게 되면 소비자의 유보효용은 비대칭적으로 왜곡되면서 기존의 분리균형 계약은 더 이상 작동하기 어렵다. 이를 극복하는 방안으로 신용금지와 차별화된 금융비용계약을 제공하는 것이 될 수 있다. 그러나 분리 계약을 제공할 때 양질의 금융소비자가 차별화를 위해서 지불해야 되는 정보비용이 증가한다. 반면에, 단일 가격으로 통합 균형계약을 제시하고 사용 하면 정보비용이 감소하여 사회적 효용이 증가한다. This paper addresses the pricing of financial services particularly when the profiles of users are distorted due to the change of their reservation utility. The more valuable are the financial services, the higher price the investors are willing pay for them. However, the investors face incentive to mimic the lower type in order to save the cost. Facing this adverse selection problem, the financial intermediary is able to offer the separating price to the different types of agents in lieu of Spence-Mirrlees sorting condition. When the economy is relatively stable and steady, the financial intermediary is able to offer the investors different menu of contracts, with which they reveal their true types and pay the price for the financial service. This may not be the case when the agents are not symmetrically affected by the economy wide crisis. As the recess of economy continues since the onset of the financial crisis, the investor characteristic profiles change so that the investors` willingness to pay is modified. One way to overcome this problem is to maintain the separating price whereas not offering the service through credit rationing, as long as those investors are clearly identified. The current paper, however, shows that the pooling price is even beneficial to the financial intermediary rather than not offering the services because they can save the informational rents that will be paid out to the higher type investors otherwise.
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자동변속기용 유압제어시스템에서의 저유량설계를 통한 효율개선방안 연구
송수영(Sooyoung Song),이흥규(Heungkyu Lee),김영배(Youngbae Kim),김홍민(Hongmin Kim) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
An Hydraulic control system is very important for hydraulic and shift control performances in auto-transmission and vehicle. Specially, Designing hydraulic system in low flux optimization view point determine a transfer efficiency and a, low flux design is needed to optimize hydraulic system concept and use low volume capacity pump.
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이지호(JiHo Lee),양동욱(Donguk Yang),윤창현(ChangHyun Yoon),송수영(SooYoung Song) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
The product to be developed is a high-power intelligent agricultural machine steering knuckle of SSF cast iron for replacement of FCD500, a key component that supports the load and impact of the road surface on the agricultural machine axle while delivering the driving force and braking force of the wheel to the frame. As the demand for improved battery efficiency following the intelligentization of agricultural machinery and the development of electric drive-based tractors requires the compaction and high strength of current components, the application of SSF cast iron, which has improved properties than the existing FCD500 material, is necessary. In addition, research is being carried out globally for the commercialization of eco-friendly, high-efficiency tractors such as electric tractors and hybrid tractors, and these electric energy-based tractors have the advantage of securing high torque in a moment like electric vehicles, but this causes loads on the tractor"s steering axle system, requiring improved strength of parts materials. In order to improve these areas, the present study developed cast iron knuckle for agricultural machinery which shows superior mechanical properties compared to conventional cast iron steering knuckle and earlier verified the shrinkage of cast iron through fluid coagulation analysis of knuckle.
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