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| 1 | Joint Task Scheduling, Resource Allocation, and UAV Trajectory under Clustering for FANETs显示文摘This paper establishes a new layered flying ad hoc networks(FANETs) system of mobile edge computing(MEC) supported by multiple UAVs,where the first layer of user UAVs can perform tasks such as area coverage, and the second layer of MEC UAVs are deployed as flying MEC sever for user UAVs with computing-intensive tasks. In this system, we first divide the user UAVs into multiple clusters, and transmit the tasks of the cluster members(CMs) within a cluster to its cluster head(CH). Then, we need to determine whether each CH’ tasks are executed locally or offloaded to one of the MEC UAVs for remote execution(i.e., task scheduling), and how much resources should be allocated to each CH(i.e., resource allocation), as well as the trajectories of all MEC UAVs.We formulate an optimization problem with the aim of minimizing the overall energy consumption of all user UAVs, under the constraints of task completion deadline and computing resource, which is a mixed integer non-convex problem and hard to solve. We propose an iterative algorithm by applying block coordinate descent methods. To be specific, the task scheduling between CH UAVs and MEC UAVs, computing resource allocation, and MEC UAV trajectory are alternately optimized in each iteration. For the joint task scheduling and computing resource allocation subproblem and MEC UAV trajectory subproblem, we employ branch and bound method and continuous convex approximation technique to solve them,respectively. Extensive simulation results validate the superiority of our proposed approach to several benchmarks. | Wenjing You Chao Dong Qihui Wu Yuben Qu Yulei Wu Rong He | 2022 | China Communications2022，19，1： | 3 |
| 2 | The antigenicity of SARS-CoV-2 Delta variants aggregated 10 high-frequency mutations in RBD has not changed sufficiently to replace the current vaccine strain显示文摘Emerging SARS-CoV-2 variants are the most serious problem for COVID-19 prophylaxis and treatment.To determine whether the SARS-CoV-2 vaccine strain should be updated following variant emergence like seasonal flu vaccine,the changed degree on antigenicity of SARS-CoV-2 variants and H3N2 flu vaccine strains was compared.The neutralization activities of Alpha,Beta and Gamma variants’spike protein-immunized sera were analysed against the eight current epidemic variants and 20 possible variants combining the top 10 prevalent RBD mutations based on the Delta variant,which were constructed using pseudotyped viruses.Meanwhile,the neutralization activities of convalescent sera and current inactivated and recombinant protein vaccine-elicited sera were also examined against all possible Delta variants.Eight HA protein-expressing DNAs elicited-animal sera were also tested against eight pseudotyped viruses of H3N2 flu vaccine strains from 2011–2019.Our results indicate that the antigenicity changes of possible Delta variants were mostly within four folds,whereas the antigenicity changes among different H3N2 vaccine strains were approximately 10–100-fold.Structural analysis of the antigenic characterization of the SARS-CoV-2 and H3N2 mutations supports the neutralization results.This study indicates that the antigenicity changes of the current SARS-CoV-2 may not be sufficient to require replacement of the current vaccine strain. | Jiajing Wu Jianhui Nie Li Zhang Hao Song Yimeng An Ziteng Liang Jing Yang Ruxia Ding Shuo Liu Qianqian Li Tao Li Zhimin Cui Mengyi Zhang Peng He Youchun Wang Xiaowang Qu Zhongyu Hu Qihui Wang Weijin Huang | 2022 | Signal Transduction and Targeted Therapy2022，7，2： | 1 |
| 3 | Efficient Extractive Desulfurization of Fuel Oils Using N-Pyrrolidone/Alkylphosphate-Based Ionic Liquids显示文摘Four BrØsted acid ionic liquids(ILS)[MMP][DMP],[MEP][DEP],[HMP][DMP]and[HEP][DEP]were syn-thesized and used as extractants for desulfurization of aromatic sulfur compounds in model oil.The mutual solubil-ity of four ILs were investigated.The extraction equilibrium of four ILs could be reached in as soon as 5 min and the extraction capability followed the order[MMP][DMP]>[MEP][DEP]>[HEP][DEP]>[HMP][DMP].The S extraction showed the highest efficiency under the conditions of 30℃,30 min and 1∶1(V/V)IL∶oil.Under the optimal condition,70.9%of thiophene(TS),76.9%of benzothiophene(BT)and 87.5%of dibenzothiophene(DBT)in n-octane could be efficiently removed by[MMP][DMP].The multiple extraction and regeneration performance of[MMP][DMP]for TS was also investigated and the results were satisfying.These results suggest that[MMP][DMP]has the best extraction capability and can serve as a promising solvent for extractive desulfurization of fuel oils. | Chunhai Liu Qihui He Zheng Zhang Yangyang Su Renfu Xu Baixing Hu | 2014 | Chinese Journal of Chemistry2014，32，5： | 1 |
| 4 | Adsorption of chromium(III), mercury(II) and lead(II) ions onto 4-aminoantipyrine immobilized bentonite显示文摘 | Qihui Wang Xijun Chang Dandan Li Zheng Hu Ruijun Li Qun He | 2010 | Journal of Hazardous Materials2010，，2： | 1 |
| 5 | Effects of chemical structure on the properties of carboxylate-type eopolymer dispersant for coal-water slurry显示文摘 | RENFU XU WEI ZHUANG QIHUI HE | 2009 | Environmental and Energy Engineering2009，55，9： | 1 |
| 6 | Effects of chemicals and blending petroleum coke on the properties of low-rank Indonesian coal water mixtures显示文摘 | Xu Renfu He Qihui Cai Jun | 2008 | Fuel Processing Technology2008，89，： | 1 |
| 7 | Effects of chemicals and blending petroleum coke on the properties of low-rank Indonesian coal water mixtures 显示文摘 | XU Renfu HE Qihui CAI Jun | 2008 | Fuel Processing Technology2008，89，3： | 1 |
| 8 | Cyanate Ester/Functionalized Silica Nanocomposite: Synthesis, Characterization and Properties显示文摘在这纸硅石 nanoparticles 与 covalently, grafted 聚合物链被合并到 bisphenol dicyanate 酉旨(BADCy ) 到准备在机械、热的性质导致了改进的 composites。Fourier 变换红外线(英尺红外) 光谱学传播电子显微镜学(TEM ) 和 thermogravimetric 分析(TGA ) 被采用检验硅石 nanoparticles 的表面 functionalization。functionalized SiO 2 的效果(机械的治好的反应和 BADCy 树脂的热性质上的 F-SiO 2) 系统地被调查。系统的治好的反应与 F-SiO 2 的增加被便于。同时,与修改 F-SiO 2 的适当内容的加入能提高的整洁的树脂相比,包括的机械性质影响曲折力量和破裂坚韧 K BADCy 的 IC 树脂。另外 BADCy/F-SiO 2 nanocomposites 的热稳定性比纯 BADCy 的也优异树脂。 | Jiapeng Li Qihui He Renfu Xu Baixing Hu | 2015 | Chinese Journal of Chemistry2015，33，11： | 1 |
| 9 | MicroRNA-141 promotes the proliferation of non-small cell lung cancer cells by regulating expression of PHLPP1 and PHLPP2显示文摘 | Zhoufang Mei Yanchao He Jingjing Feng Jindong Shi Yong Du Ling Qian Qihui Huang Zhijun Jie | 2014 | FEBS Letters2014，，17： | 1 |
| 10 | Back to Science in Searching for SARS-CoV-2 Origins显示文摘In recent decades,emerging and re-emerging human-infecting pathogens have been represented as huge threats to public health and have become a global concern(1).After outbreaks of two coronaviruses(CoVs),severe acute respiratory syndrome coronavirus(SARS-CoV)and Middle East respiratory syndrome coronavirus(MERS-CoV),severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)became the first-known pandemic hastening CoV with tremendous wrecking to the world(2).The origin tracing of these emerging pathogens is of great significance in infectious disease prevention and control(3–4).The origin of SARS-CoV-2 remains elusive after the more than 3-year pandemic,though scientists around the world are making great efforts.From the experience of studying many other infectious pathogens,origin tracing is systematic and time-consuming work.The supposed origins of many infectious pathogens are still in debate,including SARS-CoV and human immunodeficiency virus,etc(5). | William J Liu Wenwen Lei Xiaozhou He Peipei Liu Qihui Wang Zhiqiang Wu Yun Tan Shuhui Song Gary Wong Jian Lu Jingkun Jiang Qiang Wei Mingkun Li Juncai Ma Xiaozhong Peng Yixue Li Baoxu Huang Yigang Tong Jun Han Guizhen Wu | 2023 | China CDC weekly2023，5，14： | 0 |
| 11 | Imitation of the characteristics of the wind turbine based on DC motor显示文摘This paper analyzed the operating principles and power and torque characteristics of the wind turbine and the direct current motor (DC motor), and investigated the operating characteristics of the wind turbine compared to that of the DC motor. The torque imitation scheme, which has good performance and high feasibility, together with the whole wind turbine imitation system, was provided. The wind turbine imitation system includes not only a hardware platform composed of PC, data-collection board and thyristor-based velocity-regulator, but also monitor software of wind turbine imitation. The experimental results of different occasions verify the correctness and feasibility of the wind turbine imitation scheme proposed in this paper, which provided a valid idea for wind turbine imitation and investigation of wind power generation techniques in the laboratory. | LIU Qihui HE Yikang ZHAO Rende | 2007 | Frontiers of Electrical and Electronic Engineering in China2007，2，3： | 0 |
| 12 | Intelligent reflecting surface assisted untrusted NOMA transmissions:a secrecy perspective显示文摘In this paper,we investigate the intelligent reflecting surface(IRS)assisted secure transmissions for the untrusted non-orthogonal multiple access(NOMA)network threatened by an external eavesdropper,where the near user and two untrusted far users receive the privacy information from the transmitter assisted by the IRS's passive reflection.To protect the privacy information against internal and external eavesdropping,we first provide a comprehensive analysis of the secrecy rates,which can offer suitable methods for separately handling the internal and external secrecy performance.Following the above results,we formulate a secrecy rate maximization problem by optimizing the transmission power allocation and phase shifts.To achieve this goal,we decouple the non-convex optimization problem into the external security problem and the internal security problem.Then,we propose a heuristic simulated annealing algorithm to iteratively solve the above problems,where the semi-definite relaxation(SDR)technique,the singular value decomposition(SVD)technique,and the Lagrange multiplier method are utilized to relax the problems and optimize the power allocation and phase shifts.Finally,numerical results show that the proposed scheme can improve the secrecy rate compared with the existing IRS-aided secure NOMA transmission schemes. | Dawei WANG Xuanrui LI Yixin HE Fuhui ZHOU Qihui WU | 2023 | Science China(Information Sciences)2023，66，9： | 0 |
| 13 | Outage-driven link selection for secure buffer-aided networks显示文摘In this paper, we investigate secure communication in a two-hop wireless network, where multiple buffer-aided relays assist to securely forward data from the sender to the destination threatened by a passive eavesdropper. To satisfy the security and delay requirements, we propose a novel link selection policy without the instantaneous wiretap channel state information. Different from the most current link selection policies,the proposed link selection policy is designed by joint considering the link secrecy outage probability and the buffer states. To evaluate the secrecy performance, we first characterize the system state transition matrix and the stationary state probability, and then derive the closed-form expressions for the secrecy outage probability and the secrecy rate. Moreover, we formulate a framework based on the queuing theory to analyze the end-to-end information delay at the source, the relays, and the queues, and derive the closed-form expression for the information delay. Finally, we conduct simulations to validate our theoretical performance analysis, and verify the performance improvement of the proposed outage-driven secure transmission scheme in terms of secrecy outage probability and information delay. | Dawei WANG Tianmi HE Fuhui ZHOU Julian CHENG Ruonan ZHANG Qihui WU | 2022 | Science China(Information Sciences)2022，65，8： | 0 |
| 14 | Soybeanβ-conglycinin and glycinin reduced growth performance and the intestinal immune defense and altered microbiome in juvenile pearl gentian groupers Epinephelus fuscoguttatus♀×Epinephelus lanceolatus♂显示文摘The utilization efficiency of soy protein is affected by its 2 anti-nutritional substancesdthe antigens bconglycinin and glycinin.This study investigated their effects on the growth performance,intestinal immune defense,andmicrobiome in juvenile pearl gentian groupers(Epinephelus fuscoguttatus♀×Epinephelus lanceolatus♂).Three isonitrogenous and isolipidic diets were formulated containing fishmeal supplemented with 70 g/kgβ-conglycinin or 100 g/kg glycinin,or no supplementation(control).Each experimental diet was fed to quadruplicate groups with 30 fish in each tank for 8 weeks.Dietary inclusion of eitherβ-conglycinin or glycinin significantly reduced weight gain and specific growth rates,and cell proliferation of the distal intestine.Histological evaluation of the intestine tract revealed the inflammation signs,characterized by reducing of plica height and width as well as the number of the goblet cells,and widening of the lamina propria.The group fed theβ-conglycinin diet had reduced lysozyme activity,contents of immunoglobulin M and complements 3 and 4.Increased activities of caspase-3 and-9 were observed in the group fed the bconglycinin diet compared to the other 2 groups.In the intestinal microbiota,the relative abundances of the potentially pathogenic genera Photobacterium and Vibrio were significantly higher in the glycinin group than those in others.Therefore,the existence of soybean antigens(β-conglycinin or glycinin)could damage the structural integrity of the intestine,reduce immune defense,reshape the intestinal microbiome and,ultimately,impair growth in fish. | Yuanfa He Jinfang Liang Xiaohui Dong Hongyu Liu Qihui Yang Shuang Zhang Shuyan Chi Beiping Tan | 2022 | Animal Nutrition2022，，2： | 0 |
| 15 | Biomimetic Alveolus-on-a-Chip for SARS-CoV-2 Infection Recapitulation显示文摘SARS-CoV-2 has caused asevere pneumoniapandemic worldwide with high morbidity and mortality.Howto developa preclinical model for recapitulating SARS-CoV-2 pathogenesis is stil urgent and essential for the control of the pandemic.Here,we have established a 3D biomimetic alveolus-on-a-chip with mechanical strain and extracellular matrix taken into consideration.We have validated that the alveolus-on-a-chip is capable of recapitulating key physiological characteristics of human alveolar units,which lays a fundamental basis for viral infection studies at the organ level.Using virus-analogous chemicals and pseudovirus,we have explored virus pathogenesis and blocking ability of antibodies during viral infection.This work provides a favorable platform for SARS-Cov-2-related researches and has a great potential for physiology and pathophysiology studies of the human lung at the organ level in vitro. | Ting Cao Changmin Shao Xiaoyu Yu Ruipei Xie Chen Yang Yulong Sun Shaohua Yang Wangjian He Ye Xu Qihui Fan Fangfu Ye | 2022 | Research2022，，2： | 0 |
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