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- 저자 : Yuho Chung,Yiwei Li,Jian-min Jia (검색결과 2 건)
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AN EMPIRICAL EXAMINATION OF THE PEER INFLUENCE ON CROWDFUNDING MARKETS
Yuho Chung,Yiwei Li,Jian-min Jia 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7
Crowdfunding has recently emerged as a novel way for people to collect monetary donation from large numbers of internet users. Since 2009, the volume of crowdfunding has increased exponentially, reaching 16.2 billion in 2014. A growing number of literature starts to investigate social influence in crowdfunding that occurs when former backers, who make contribution to fund a project at an earlier stage of fund-raising period, make influences of the contribution decision of latter backers. Crowdfunding can be classified into four categories, namely, lending-based, equity-based, reward-based, and donation-based. The primary goal of lending-based and equity-based crowdfunding is to raise capital and borrow money from a number of investors or lenders in exchange for interest payment or equity share of a company. In contrast, reward-based crowdfunding or donation-based crowdfunding requires a project initiator to create a project, which raise fund to develop a new product (e.g., private good) or enhance the public interest (e.g., public good). In this study, we focus on the two most popular crowdfunding type: reward-based and donation-based crowdfunding projects. In reward-based crowdfunding, backers (or contributors) give a small amount of money in return for a reward such as a copy of creative work or pre-sell products. In donation-based crowdfunding, backers donate to projects for gratitude and the pleasure of giving and expect no compensation in exchange
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Park, Minwoo,Im, Jungkyun,Shin, Minkwan,Min, Yuho,Park, Jaeyoon,Cho, Heesook,Park, Soojin,Shim, Mun-Bo,Jeon, Sanghun,Chung, Dae-Young,Bae, Jihyun,Park, Jongjin,Jeong, Unyong,Kim, Kinam Nature Pub. Group 2012 Nature nanotechnology Vol.7 No.12
<P>Conductive electrodes and electric circuits that can remain active and electrically stable under large mechanical deformations are highly desirable for applications such as flexible displays, field-effect transistors, energy-related devices, smart clothing and actuators. However, high conductivity and stretchability seem to be mutually exclusive parameters. The most promising solution to this problem has been to use one-dimensional nanostructures such as carbon nanotubes and metal nanowires coated on a stretchable fabric, metal stripes with a wavy geometry, composite elastomers embedding conductive fillers and interpenetrating networks of a liquid metal and rubber. At present, the conductivity values at large strains remain too low to satisfy requirements for practical applications. Moreover, the ability to make arbitrary patterns over large areas is also desirable. Here, we introduce a conductive composite mat of silver nanoparticles and rubber fibres that allows the formation of highly stretchable circuits through a fabrication process that is compatible with any substrate and scalable for large-area applications. A silver nanoparticle precursor is absorbed in electrospun poly (styrene-block-butadiene-block-styrene) (SBS) rubber fibres and then converted into silver nanoparticles directly in the fibre mat. Percolation of the silver nanoparticles inside the fibres leads to a high bulk conductivity, which is preserved at large deformations (σ???2,200?S?cm(-1) at 100% strain for a 150-?m-thick mat). We design electric circuits directly on the electrospun fibre mat by nozzle printing, inkjet printing and spray printing of the precursor solution and fabricate a highly stretchable antenna, a strain sensor and a highly stretchable light-emitting diode as examples of applications.</P>
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