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박석희(Park Sukhee) 한국농어촌관광학회 2003 농어촌관광연구 Vol.10 No.1
Recently, there are many opinions to develop rural tourism. Especially, how to make rural objects for rural tourism resources. The contents of tourism products is very important in tourism market. The purpose of this paper are to make clear the concept of tourism products and to present the strategies to make rural tourism resources for rural tourism products. There are four basic strategies, three strategies in the respect to the organization and four strategies at the dimension of products. Before making tourism products, we must find something for rural tourists to make something to do at rural destinations. There are 7 ways to make something to do. Then we can choose and arrange them for rural tourist products.<br/> <br/>
박석희(Sukhee Park),정규원(Kyuwon Jeong) 한국생산제조학회 2015 한국생산제조학회지 Vol.24 No.1
The performance of a passenger vehicle has been greatly improved recently owing to the intensive use of electronic controllers. Many components of a vehicle, including the engine, are controlled by electronic systems installed in the vehicle. Therefore, the electrical power required for such electronics has increased significantly. However, the electrical power generated by the vehicle’s alternator, operated by the engine, is limited, and when the vehicle is started, a large instantaneous current is required. The voltage of the vehicle electrical system fluctuates to a very low level, then, it is gradually recovered. This case is very severe and can even cause damage to electronic systems. In this study, a voltage-stabilizing module comprising electric double layer supercapacitors, which could alleviate the voltage variation, was developed and tested.
플라즈마 표면처리 방법을 이용한 웨이퍼레벨 몰딩 공정용 기판의 최적 이형조건 도출
연시모,박진호,이낙규,박석희,이혜진,Yeon, Simo,Park, Jeonho,Lee, Nukkyu,Park, Sukhee,Lee, Hyejin 한국교통대학교 융복합기술연구소 2015 융ㆍ복합기술연구소 논문집 Vol.5 No.1
In wafer level molding progress, the thermal releasing failure phenomenon is shown up as the important problem. This phenomenon can cause the problem including the warpage, crack of the molded wafer. The thermal releasing failure is due to the insufficiency of adhesion strength degradation of the molding tape. To solve this problem, we studied experimental method increasing the release property of the molding tape through the plasma surface treatment on the wafer substrate. In this research, the vacuum plasma treatment system is used for release property improvement of the molding tape and controls the operating condition of the hydrophilic($O_2$, 100kW, 10min) and hydrophobic($C_2F_6$, 200kW, 10min). In order to perform the peeling test for measuring the releasing force precisely, we remodel the micro scale material property evaluation system developed by Korea institute of industrial technology. In case of hydrophilic surface treatment on the wafer substrate, we can figure out the releasing property of molding tape increase. In order to grasp the effect that it reaches to the release property increase when repeating the hydrophilic treatment, we make an experiment with twice treatment and get the result to increase about 12%. We find out the hydrophilic surface treatment method using plasma can improve releasing property of molding tape in the wafer level molding process.
3D Printing 공정을 이용한 PDMS Mold 제작
김광윤(KwangYoon Kim),박석희(SukHee Park),이한빛(HanBit Lee),이낙규(NakGyu Lee),윤종헌(JongHun Yoon) 대한기계학회 2017 大韓機械學會論文集A Vol.41 No.6
최근 신체 생물학적 인터페이스와 인체 유사 로봇 공학(Human-like robotics) 분야에서 요구하는 임의적인 형상 제작이 가능하다는 이유로 3D 프린팅 기술에 대한 그 관심이 높아지고 있다. 본 연구의 주된 고려사항은 PDMS로 제작한 탄성 중합체로 지지되는 3D 패키징 생물학적 센서(bio-sensor)의 제작이다. 3D 프린팅 공정을 이용한 PDMS 성형 몰드의 제작은 신체의 표면에 따라 달라지는 임의적인 형상에 적합한 bio-sensor의 제작 뿐만 아니라 고형화 과정 중 균일한 두께분포의 PDMS 성형이 가능하다는 점에서 기존 공정과는 차별화된 중요성을 갖는다. 이와 관련하여 본 연구에서는 몰드를 이용한 PDMS의 제작 과정 중 이형과정 에서의 유연성과 PDMS의 고형화 과정에서 제작 공정의 특성을 만족시키기 위한 PDMS 성형 몰드의 설계에 있어 여러 소재의 부분 별 선택적 배열과 관련한 유한요소해석과 실제 몰드 제작을 통한 실험을 진행하였다. 3D printing technology has been a great interest in human bio-interfaces and human-like robotics since they require arbitrary and adaptive manufacturing. This research mainly concerns the 3D fabrication of a packed biosensor using elastomeric sheets made of PDMS. It is essential to design the PDMS molding with 3D printing since, in the case of biosensors, it should not only produce a conformal shape depending on an arbitrary skin surface but also guarantee a uniform thickness distribution during solidification in the PDMS prepolymer solution. To satisfy the characteristics of the PDMS molding, such as flexibility in the de-molding and stiffness in the solidification processes, multi-materials have been selectively applied to the PDMS molding design, which has been validated with finite element analyses and compared with the 3D printed molding.
배열된 PCL 섬유 지지체의 근아세포 분화 촉진에 관한 연구
고웅현(Unghyun Ko),방현승(Hyunseung Bang),김미나(Mina Kim),박석희(Sukhee Park),양동열(Dongyol Yang),신현정(Jennifer H.) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Fibrous scaffold and physical stimuli are known to enhance muscle development. In this study, we fabricated polycaprolactone (PCL) fibers in aligned or random arrangements by electrospinning. PCL fibers were spun towards either spaced collector or flat plate collector. C2C12 muscle cells (mouse myoblasts) were seeded on scaffolds coated with fibronectin (10μg/ml) and let grow until cells became confluent. Cells were then cultured for a week under horse serum condition. Immunofluorescence for skeletal myosin heavy chain, an indicator for muscle differentiation, showed enhanced differentiation of muscle cells on aligned fibers when compared to ones on random condition.. Synergetic effects of fiber alignments and DC electric field were further investigated to propose an appropriate condition for muscle differentiation for tissue engineering.