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- 저자 : Xiaoxia Qi,Qijin Wang,Fan Jian (검색결과 4 건)
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Multi-path Routing Improved Protocol in AODV Based on Nodes Energy
Xiaoxia Qi,Qijin Wang,Fan Jian 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.1
Aiming at energy-constrained of Ad Hoc network, this paper proposes a multi-path routing protocol (EM-AODV)I n AODV that based on nodes energy. EM-AODV designs methods of obtaining nodes energy by upgrading the route discovery and route maintenance process of AODV, calculates the path of comprehensive energy derived path priority by routes total hops and nodes energy to format the multi-path routing mechanism. The energy as the metric prerequisite during the routing process, by setting nodes energy bound and balancing nodes data forwarding to postpone network lifetime. Simulation results show that EM-AODV has lower average end-to-end delay, well improve the energy consumption.
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Research Development of Wood/Bamboo-Based Composites (Wood/Bamboo Scrimber)
Yue Qi,Xiaoxia Wang,Wenji Yu,Yahui Zhang 강원대학교 산림과학연구소 2022 강원대학교 산림과학연구소 학술대회 Vol.2022 No.10
Wood/Bamboo scrimber is a kind of biomass composite material, which is recombined with wood/bamboo cell unit and resin, which has been widely used in the field of architecture, outdoor flooring, door, window, and landscape, etc. The technical connotation, cross-response mechanism and manufacturing regulatory mechanism of bamboo unit, heat treatment, resin impregnation, drying and modeling process were discussed and summarized with the performance evaluation and functional application of wood/bamboo scrimber. In this study, we introduced the development and issue of wood/bamboo scrimber and discussed the related basic research and technique innovation. We developed super-thin veneer as unit to make oriented wood scrimber and researched the application of bio-adhesive. The results showed that the dimensional stability and bending strength were higher than the traditional OSB. Moreover, the effect of adhering mechanism with combination of lignin degradation and resin on physical and mechanical properties were discussed. It was performed that lignin degradation with higher temperature played an important role in adhering process. Overall, the above study could provide theoretical and technical support of scientific application.
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Improvement of Scanlan’s Nonlinear Model based on Residual Analysis
Jingwen Yan,Xiaoxia Tian,Qi Zhou,Yanchun Yang 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.1
Scanlan’s semi-empirical nonlinear model has been widely applied in bridge engineering because of its simplicity. However, it is based on the oscillation displacement, and thus it fails to describe the Vortex-induce Vertical Force (VIVF) on a flat closed-box bridge deck. In the study, in order to better depict VIVFs, a new improved model was proposed. First, the residual of the Vortexinduced Vertical Force (VIVF) is regular and maintains the significant quadratic relation with the VIVF reconstructed by Scanlan’s model, which means Scanlan’s model needs to be improved by adding quadratic terms. Second, an appropriate quadratic term was a dot product of dimensionless displacement and velocity, because this term has a significant linear relation with the reconstructed VIVF in the residual plot, and is independent of the other terms in Scanlan’s model. Furthermore, in lock-in range, the maximum oscillation displacement of a blunt body at different wind speeds was predicted by the proposed model. Simulation results showed that the proposed model is suitable for describing the nonlinearity of the VIVF and well fit the measured data. Due to simplicity, validity, and parameters to be easily identified, the proposed model has potential application in engineering.
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