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        Intention-Oriented Itinerary Recommendation Through Bridging Physical Trajectories and Online Social Networks

        ( Xiangxu Meng ),( Xinye Lin ),( Xiaodong Wang ),( Xingming Zhou ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.12

        Compared with traditional itinerary planning, intention-oriented itinerary recommendations can provide more flexible activity planning without requiring the user`s predetermined destinations and is especially helpful for those in unfamiliar environments. The rank and classification of points of interest (POI) from location-based social networks (LBSN) are used to indicate different user intentions. The mining of vehicles` physical trajectories can provide exact civil traffic information for path planning. This paper proposes a POI category-based itinerary recommendation framework combining physical trajectories with LBSN. Specifically, a Voronoi graph-based GPS trajectory analysis method is utilized to build traffic information networks, and an ant colony algorithm for multi-object optimization is implemented to locate the most appropriate itineraries. We conduct experiments on datasets from the Foursquare and GeoLife projects. A test of users` satisfaction with the recommended items is also performed. Our results show that the satisfaction level reaches an average of 80%.

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        Electrospinning Synthesis of ZIF-67/PAN Fibrous Membrane with High-capacity Adsorption for Malachite Green

        Lina Jin,Jian Ye,Yin Wang,Xinye Qian,Mingdong Dong 한국섬유공학회 2019 Fibers and polymers Vol.20 No.10

        Metal-organic frameworks (MOFs) exhibit great potential for dye adsorption. However, MOF powder is difficultto remove from aqueous solution, which hinders the practical application of MOFs. Integration of MOFs on polymericfibrous membrane provides a new strategy to reach the achievements that not only keep the adsorption ability of MOFs fordyes, but also easily remove the MOF/dye complex from water. Here, we successfully synthesize zeolitic imidazoleframework-67/polyacrylonitrile (ZIF-67/PAN) fibrous membrane with ZIF-67 loading ratio of 54 % by electrospinningmethod. The average diameters of ZIF-67 nanoparticles and ZIF-67/PAN fibers are about 200 nm and 0.72 μm, respectively. The adsorption process of MG on ZIF-67 nanoparticles or ZIF-67/PAN fibers followed a pseudo-second-order kinetic modeland fitted Langmuir isotherm. The maximum adsorption capacities of ZIF-67 nanoparticles and ZIF-67/PAN fibers are 2545and 1305 mg·g-1, respectively. After four regeneration cycles, the ZIF-67/PAN fibers membrane still exhibit over 92 % of theoriginal capacity of ZIF-67/PAN fibers. In addition, ZIF-67/PAN fibers also show good adsorption abilities for Congo red(849 mg·g-1) and Basic fuschin (730 mg·g-1). Therefore, ZIF-67/PAN fibers would be as a promising adsorbent for theremoval of dye in industrial application because of its simple preparation method, excellent adsorption property, ease ofseparation and favorable reusability.

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        Overcome energy loss of exciplex-sensitized fluorescence OLEDs with separating exciton generation and fluorescence emission zone

        Ning ShuYa,Wu Yuan,Wu ChuanMing,Zhang YiFan,Luo MeiTing,Wang XinYe,Wang DongDong 한국물리학회 2022 Current Applied Physics Vol.39 No.-

        TADF-sensitizing-fluorescence (TSF) strategy suffered a disturbing energy loss causing by the T1 states of fluorescence dopant (FD) due to its low T1-state energy and forbidden of radiative transition. In this manuscript, we used TCTA/PO-T2T planar heterojunction (PHJ) interface as exciton generation zone and adjacent PO-T2T layer doped with rubrene as fluorescence emission zone, achieved the maximum EQE and CE of 8.3% and 26.1 cd A-1, respectively for rubrene-based device. Our experiments show the necessary PO-T2T thickness doped with rubrene is 15 nm and thicker doping layer over 15 nm would destroy device efficiency. It was further found that the exciplex exciton begin to decay within the time of 4 nm diffusion distance in PO-T2T layer and most of exciplex excitons were restrained in TCTA/PO-T2T heterojunction interface in PHJ device. The about 1.1 eV barrier for hole injection from TCTA to PO-T2T and bad hole-transporting capability of PO-T2T made exciple exciton only generate on this interface. Thus, even if the rubrene doped PO-T2T layer is right after the TCTA layer, FD in PO-T2T layer are well separated to the exciplex excitons in TCTA/PO-T2T interface, overcoming T1 energy loss caused by FD. Our approach provides a beneficial path towards overcome energy loss causing by the T1 states of FD in TSF-OLEDs based on exciplex as TADF sensitizer.

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