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| 1 | Drone-based entanglement distribution towards mobile quantum networks显示文摘Satellites have shown free-space quantum-communication ability;however,they are orbit-limited from full-time all-location coverage.Meanwhile,practical quantum networks require satellite constellations,which are complicated and expensive,whereas the airborne mobile quantum communication may be a practical alternative to offering full-time all-location multi-weather coverage in a cost-effective way.Here,we demonstrate the first mobile entanglement distribution based on drones,realizing multi-weather operation including daytime and rainy nights,with a Clauser-Horne-Shimony-Holt S-parameter measured to be 2.41±0.14 and 2.49±0.06,respectively.Such a system shows unparalleled mobility,flexibility and reconfigurability compared to the existing satellite and fiber-based quantum communication,and reveals its potential to establish a multinode quantum network,with a scalable design using symmetrical lens diameter and single-mode-fiber coupling.All key technologies have been developed to pack quantum nodes into lightweight mobile platforms for local-area coverage,and arouse further technical improvements to establish wide-area quantum networks with high-altitude mobile communication. | Hua-Ying Liu Xiao-Hui Tian Changsheng Gu Pengfei Fan Xin Ni Ran Yang Ji-Ning Zhang Mingzhe Hu Jian Guo Xun Cao Xiaopeng Hu Gang Zhao Yan-Qing Lu Yan-Xiao Gong Zhenda Xie Shi-Ning Zhu | 2020 | National Science Review2020，7，5： | 6 |
| 2 | Effects of stability margin and thrust specific fuel consumption constrains on multi-disciplinary optimization for blended-wing-body design显示文摘Blended-Wing-Body(BWB) configuration, as an innovative transport concept, has become a worldwide research focus in the field of civil transports development. Relative to the conventional Tube-And-Wing(TAW) configuration, the BWB shows integrated benefits and serves as a most promising candidate for future ‘‘green aviation'. The objective of the present work is to figure out the effects of the stability margin and Thrust Specific Fuel Consumption(TSFC) on the BWB design in the framework of Multi-Disciplinary Optimization(MDO). A physically-based platform was promoted to study the effect static stability margin and engine technology level. Low-order physically based models are applied to the evaluation of the weight and the aerodynamic performance. The modules and methods are illustrated in detail, and the validation of the methods shows feasibility and confidence for the conceptual design of BWB aircrafts. In order to find out the relation between planform changes and the selection of stability and engine technology level, two sets of optimizations are conducted separately. The study proves that these two factors have dominant effects towards the optimized BWB designs in both aerodynamic shapes, weight distribution, which needs to be considered during the MDO design process. A balance diagram analysis is applied to find out a reasonable static stability margin range. It can be concluded that a recommended stability margin of a practical BWB commercial aircraft can be half of that of a conventional TAW design. | Minghui ZHANG Zhenli CHEN Zhaoguang TAN Wenting GU Dong LI Changsheng YUAN Binqian ZHANG | 2019 | Chinese Journal of Aeronautics2019，32，8： | 3 |
| 3 | Visible-light responsive zinc ferrite doped titania photocatalyst for methyl orange degradation 显示文摘 | CHENG Ping DENG Changsheng GU Mingyuan | 2007 | J Mater Sci2007，42，22： | 1 |
| 4 | Fabrication of superhydrophobic Cu surfaces with tunable regular micro and random nano-scale structures by hybrid laser texture and chemical etching显示文摘 | Changsheng Dong Yu Gu Minlin Zhong Lin Li Kursad Sezer Mingxing Ma Wenjin Liu | 2011 | Journal of Materials Processing Tech2011，，7： | 1 |
| 5 | Spatio-temporal evolution and factor explanatory power analysis of urban resilience in the Yangtze River Economic Belt显示文摘Urban resilience assesses a city’s ability to withstand unknown risks.Scholars are not comprehensive in assessing urban resilience,and they lack consideration of population resilience.This study investigated 110 prefecturelevel cities in the Yangtze River Economic Belt(YREB)as study areas.We calculated the YREB’s level of urban resilience based on the aspects of“economy-society-population-ecology-infrastructure”,which ensured that the comprehensive evaluation of urban resilience is complete and sufficient.The spatio-temporal evolution of urban resilience was analyzed using exploratory spatial data.Geodetectors were used to investigate the impact of several indicators,focusing on economic,social,population,ecological,and infrastructure factors,on urban resilience.The results showed that the urban resilience of the YREB has maintained a slow upward trend from 2005 to 2018,and the average urban resilience of the YREB has risen from 0.2442 to 0.2560.The resilience gap between cities in the study region increased initially and then decreased.The dominant factor in the spatial differentiation of urban resilience was the economic factors,followed by the population factors.Urban resilience has been clarified and an evaluation index system is constructed,which can provide an effective reference for the evaluation of urban resilience among countries around the world.Based on this,factors that optimize urban resilience are configured,and the regional and national sustainable development can be promoted. | Changsheng Ye Mengshan Hu Lei Lu Qian Dong Moli Gu | 2022 | Geography and Sustainability2022，3，4： | 1 |
| 6 | Visible-light responsive zinc ferrite doped titania photocatalyst for methyl orange de:adation 显示文摘 | CHENG Ping DENG Changsheng GU Mingyuan | 2007 | J Mater Sci2007，42，22： | 1 |
| 7 | Simulation of Corrosion-Induced Cracking of Reinforced Concrete Based on Fracture Phase Field Method显示文摘Accurate simulation of the cracking process caused by rust expansion of reinforced concrete(RC)structures plays an intuitive role in revealing the corrosion-induced failure mechanism.Considering the quasi-brittle fracture of concrete,the fracture phase field driven by the compressive-shear term is constructed and added to the traditional brittle fracture phase field model.The rationality of the proposed model is verified by a mixed fracture example under a shear displacement load.Then,the extended fracture phase model is applied to simulate the corrosion-induced cracking process of RC.The cracking patterns caused by non-uniform corrosion expansion are discussed for RC specimens with homogeneous macroscopically or heterogeneous with different polygonal aggregate distributions at the mesoscopic scale.Then,the effects of the protective layer on the crack propagation trajectory and cracking resistance are investigated,illustrating that the cracking angle and cracking resistance increase with the increase of the protective layer thickness,consistent with the experimental observation.Finally,the corrosion-induced cracking process of concrete specimens with large and small spacing rebars is simulated,and the interaction of multiple corrosion cracking is easily influenced by the reinforcement spacing,which increases with the decrease of the steel bar interval.These conclusions play an important role in the design of engineering anti-corrosion measures.The fracture phase field model can provide strong support for the life assessment of RC structures. | Xiaozhou Xia Changsheng Qin Guangda Lu Xin Gu Qing Zhang | 2024 | Computer Modeling in Engineering & Sciences2024，138，3： | 0 |
| 8 | Effect of hydration film on scanning images of atomic force microscope显示文摘A standard calibration grating was used for image scanning to investigate the effect of hydration films on imaging resolution by Atomic Force Microscope (AFM). The results showed that the hydration films greatly affect the imaging resolution for the tapping mode, but no evident effect on the contact mode. The possible reasons for the effect of hydration films on scanning images of AFM are also brought forward here. | Changsheng Peng Qingbao Gu Hong Meng Shaoxian Song | 2006 | Journal of University of Science and Technology Beijing2006，13，1： | 0 |
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