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A novel route restoring method upon geo-tagged photos
( Guannan Wang ),( Zhizhong Wang ),( Zhenmin Zhu ),( Saiping Wen ) 한국인터넷정보학회 2013 KSII Transactions on Internet and Information Syst Vol.7 No.5
Sharing geo-tagged photos has been a hot social activity in the daily life because these photos not only contain geo information but also indicate people`s hobbies, intention and mobility patterns. However, the present raw geo-tagged photo routes cannot provide information as enough as complete GPS trajectories due to the defects hidden in them. This paper mainly aims at analyzing the large amounts of geo-tagged photos and proposing a novel travel route restoring method. In our approach we first propose an Interest Measure Ratio to rank the hot spots based on density-based spatial clustering arithmetic. Then we apply the Hidden Semi- Markov model and Mean Value method to demonstrate migration discipline in the hot spots and restore the significant region sequence into complete GPS trajectory. At the end of the paper, a novel experiment method is designed to demonstrate that the approach is feasible in restoring route, and there is a good performance.
Thermal degradation characteristic of Tetra Pak panel boards under inert atmosphere
Sabriye Piskin,Aysel Kantürk Figen,Evren Terzi,Nural Yilgör,Saip Nami Kartal 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.4
Thermal degradation characteristics of Tetra Pak panel boards (TPPB) can be useful to improve usage of such panels as an alternative to wood-based products such as plywood, fiberboard, and particleboard. In the study, samples from the TPBBs manufactured from waste Tetra Pak packages (WTPP) were heated in a nitrogen atmosphere at different heating rates (10, 15 and 20 oC/min) using a thermal analysis system. The Coats-Redfern kinetic model was applied to calculate kinetic parameters. The degradation rate equations were then established. In addition, the kinetic compensation effect (KCE) was used to correlate the pre-exponential factor (ko) with activation energy (Ea) and the existence of the KCE was accepted. TG-FT/IR analyses were applied to the TPPB degradation and then the FT-IR stack plot was used to analyze gas products (CO2, CH4, HCOOH, and CH3OH). Infrared vibrational frequencies and the micro,crystal structure of the TPPBs were investigated by Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscope (SEM) and X-Ray diffraction analysis (XRD), respectively.