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IFIP TC12 WG12.5-Second IFIP Conference on Artificial Intelligence Applications and Innovations(AIAI2005)

作者： yuchiang li Chinchen Chang Jiehshan Yeh Department of Computer Science and Information Engineering National Chung Cheng University Department of Information Engineering and Computer Science Feng Chia University Department of Computer Science and Information Management Providence University

Most existing algorithms employ a uniform minimum support for mining association ***,each item in a publication database,even each set of items,is exhibited in an individual period.A reasonable minimum support threshold has to be adjusted according to the exhibition period of each ***,this paper proposes a new algorithm,called WMS,for mining association rules with weighted minimum supports in publication *** discovers all frequent itemsets which satisfy their individual requirement of minimum support *** applies the group closure property to prune futile itemsets,to reduce the number of candidates generated,and thus to generate the candidate sets efficiently.

关键词： data mining association rules multiple minimum support

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Polymer nanowire vertical transistors

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Nano Research 2014年第6期7卷 938-944页

作者： Husande li Tzushan Chen yuchiang Chao Department of Physics and Center for Nano-Technology Chung Yuan Christian University Chung-Li 32023 Taiwan China

By utilizing poly（3-hexylthiophene）（P3HT） polymer nanowires with diameters of -15 nm as the vertical channel material, a polymer nanowire vertical transistor has been demonstrated for the first time. The P3HT nanowires were characterized by absorption spectroscopy and scanning electron microscopy. A saturated output current was created by increasing the thickness of the polymer layers between the electrodes through several spin-coating cycles of the polymer nanowires prepared in a marginal solvent. The carrier mobility was also increased through utilization of polymer nanowires with strong interchain interactions. By introducing a small hole injection barrier between the emitter and semiconducting polymer, an on/off current ratio of 1,500 was obtained. The operating voltage is less than 2 V.

关键词： polymer nanowires vertical transistors polystyrene spheres colloidal lithography

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