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Venture Capitalists in the Entrepreneurial Ecosystem and Fitness-reducing Competition
Seungyoung Lee,배종훈 서울대학교 경영연구소 2022 Seoul Journal of Business Vol.28 No.1
Although the role of venture capital (VC) in entrepreneurship is undeniable, we address possible risks associated with the over-dependence of the ecosystem on VC firms. In particular, we examine whether the supply of VC promotes or undermines the creation of entrepreneurial value in a community even when VC firms serve as an effective selector of such value. With an agent-based model of entrepreneurship where entrepreneurs are uninformed of the capabilities of the potential business partners, we suggest that the local efficiency of VC firms in the matching process may lead to the information-cascade type of herding behavior among entrepreneurs, which undermines paradoxically the overall efficiency of the ecosystem. With this implication, we seek to contribute to the literature on entrepreneurship by highlighting the possibility that competition-promoting institutions may destabilize the market itself such that VC firms as the efficient selector of entrepreneurial opportunities may induce uninformed, non-VC-backed startups to imitate the investments of VC firms, thereby reducing the diversity of entrepreneurial activities and thus the stability of the entrepreneurial ecosystem.
Wireless Power Transfer Technology in On-Line Electric Vehicle
Seungyoung Ahn,Yangbae Chun,Dong-Ho Cho,Joungho Kim 한국전자파학회JEES 2011 Journal of Electromagnetic Engineering and Science Vol.11 No.3
The On-line Electric Vehicle (OLEV) is an electric transport system in which the vehicle’s power is transferred wirelessly from power lines underneath the surface of the road. Advantages of the OLEV include reducing battery size and cost to about 20 percent of that of conventional battery-powered electric vehicles, thereby minimizing the vehicle’s weight and price, as well as the cost of charging the system. In this paper, we introduce a wireless power transfer mechanism to maximize the electrical performance of the power transfer system. Power transfer capacity, power transfer efficiency, and magnitude of leakage in the electromagnetic field (EMF) are analyzed, and the optimization methodology of the design parameters is discussed.
Seungyoung Yang,Sung Won Ahn,Ah Reum Kang,이대웅,Sung Sik Lee,김주민,안경현,Seung Jong Lee 한국유변학회 2011 Korea-Australia rheology journal Vol.23 No.3
Dynamic self-assembly of droplets, regular structure formation of moving deformable objects in a confinement environment is a challenging problem in nonlinear dynamics and engineering patterned structure. In the current work, we investigated how the local kinematic history affects the dynamic self-assembly of picoliter-sized droplets near the expansion regions in microfluidic devices. The local kinematic history was controlled by the shape of the expansion region and characterized using computational fluid dynamics. Size-controlled aqueous droplets in light mineral oil were continuously generated at T-junction microchannel and transported toward the expansion region. The fast dynamics of the droplets was tracked using high-speed video microscopy. We found three types of dynamic droplet arrays: 1D, 2D zigzag, and irregular. The order-disorder transition was associated not only with the droplet size, but also with the controlled local kinematic history, which results in the transient deformation of droplet and droplet-droplet interactions. The present results provide us with insight into the dynamic self-assembly of droplets and could be a useful guide for practical applications of droplet-based microfluidics.
Hedge Fund Regulation in Major Jurisdictions: Comparative Analysis
( Seungyoung Yoon ) 홍익대학교 법학연구소 2011 동북아법 Vol.5 No.-
Korean financial market could develop as that of United Stated or that of the United Kingdom, if Korea would stand shoulder-to-shoulder with the major international competitors and establish successfully its position as the financial hub of Northeast Asia. To get the position of the financial, Korean market must strengthen the credibility and competiveness of the asset management industry and make and improve the role of hedge funds as allocating investment capital. Cooperation and improved processes may be the important approach to protecting investors and financial stability. In order to make Korea financial market more stable with protection of investors, the financial industry and regulatory authorities both continue their efforts to make further progress in the Korean financial market and improve their understanding of the implications of hedge fund developments in global financial markets.
ADHD 아동에 관한 국내 음악치료 연구 동향 2005-2020년
백승영 ( Seungyoung Baek ) 사단법인 아시아문화학술원 2020 인문사회 21 Vol.11 No.6
본 연구는 ADHD 아동에 관환 음악치료 연구동향을 알아보기 위해 2005년부터 2020년까지 국내에 발표된 ADHD 아동 관련 음악치료 논문을 분석하였다. 학술지 및 학위논문 총 82편 중 배제논문을 추출한 결과 최종논문 22개의 논문을 선정하여 분석한 결과는 다음과 같다. 첫째, 연도별 연구 동향에서는 석사논문이 가장 많았으며, 둘째, 연구대상자의 특성은 일반 초등학생이 가장 많았으며, 연구대상자는 초고보다 초저가 더 많았다. 셋째, 연구회기 및 연구방법에서는 2단계(12-14회기)가 가장 많았으며, 연구 방법은 양적 연구는 68.16%로 가장 높게 나타났다. 넷째, 음악치료 중재 프로그램에 사용된 내용을 분석한 결과 노래 부르기가 가장 많이 나타났다. 추후 ADHD 아동을 대상으로 효과적인 음악치료 프로그램을 마련하기 위해서는 프로그램을 보다 심화시키고 전문성을 확보하여 다양한 연구들이 지속적으로 이루어져야 할 것이다. This study analyzed music therapy papers related to ADHD children published in Korea from 2005 to 2020 to find out the trends in music therapy related to ADHD children. As a result of extracting excluded papers out of a total of 82 journals and dissertations, 22 final papers were selected and analyzed. The results are as follows. First, in the research trend by year, master’s thesis was the most, and second, as for the characteristics of the study subjects, the general elementary school students were the most, and the subjects of the study were very low than the first high school students. Third, in the research session and research method, the second stage (12-14 sessions) was the most common, and the quantitative research was the highest at 68.16%. Fourth, as a result of analyzing the content used in the music therapy intervention program, singing was the most common. In order to prepare effective music therapy programs for children with ADHD in the future, various studies should be conducted continuously by deepening the program and securing expertise.