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| 1 | Pigeon-Inspired Circular Formation Control for Multi-UAV System with Limited Target Information显示文摘The problem of cooperative circular formation with limited target information for multiple Unmanned Aerial Vehicle(UAV)system is addressed in this paper.A pigeon-inspired circular formation control method is proposed to form the desired circular distribution in a plane based on the intelligent pigeon behavior during hovering.To reach the goal of prescribed radius and angular distribution,the controller is designed consisting of a circular movement part and a formation distribution part.Therein,the circular movement part is designed to make each UAV rotate around the speci-ed circle at the same angular speed only using the relative position between the UAV and the target.The formation distribution part could adjust the angular distance between each UAV and its neighbors with the jointly connected network to reduce communication cost.To smooth the speed variation,nonlinear PID-type method is delivered throughout the evolution of the system.The convergence analysis of the proposed control protocol is presented using Lyapunov theory and graph tools.The e®ectiveness of the proposed control strategies is demonstrated through numerical simulations. | Mengzhen Huo Haibin Duan Yanming Fan | 2021 | Guidance, Navigation and Control2021，1，1： | 3 |
| 2 | From animal collective behaviors to swarm robotic cooperation显示文摘The collective behaviors of animals,from schooling fish to packing wolves and flocking birds,display plenty of fascinating phenomena that result from simple interaction rules among individuals.The emergent intelligent properties of the animal collective behaviors,such as self-organization,robustness,adaptability and expansibility,have inspired the design of autonomous unmanned swarm systems.This article reviews several typical natural collective behaviors,introduces the origin and connotation of swarm intelligence,and gives the application case of animal collective behaviors.On this basis,the article focuses on the forefront of progress and bionic achievements of aerial,ground and marine robotics swarms,illustrating the mapping relationship from biological cooperative mechanisms to cooperative unmanned cluster systems.Finally,considering the significance of the coexisting-cooperative-cognitive human-machine system,the key technologies to be solved are given as the reference directions for the subsequent exploration. | Haibin Duan Mengzhen Huo Yanming Fan | 2023 | National Science Review2023，10，5： | 2 |
| 3 | Recent advances inhigh-power and high energy:multicore fiber lasers显示文摘 | Cheo P K King G G Yanming Huo | 2004 | SPIE2004，5335，： | 1 |
| 4 | Modeling of actively Q-switched Er3+/Yb3+-codoped clad-pumped fi- ber lasers显示文摘 | Huo Yanming Peter K Cheo George G King | 2005 | IEEE Journal of selected topics in Quantum Electronics2005，41，15： | 1 |
| 5 | Analysis of transverse mode competition and selection in multicore fiber lasers 显示文摘 | Huo Yanming Cheo P K | 2005 | Journal of the Optical Society of America A2005，22，11： | 1 |
| 6 | Modeling of passively Q -switched Er3 +/Yb3 + codoped clad-pumped fiber lasers 显示文摘 | Yanming Huo Peter K Cheo | 2005 | IEEE J Sel Top Quantum Electron2005，11，3： | 1 |
| 7 | Surface microstructure-controlled ZrO_(2) for highly sensitive room-temperature NO2 sensors显示文摘The high sensitivity of room-temperature gas sensors is the key to innovation in the areas of environment,energy conservation and safety.However,metal-oxide-based sensors generally operate at high temperatures.Herein,we designed three ZrO_(2)-based sensors and explored their NO_(2)sensing properties at room temperature.ZrO_(2)with three different morphologies and microstructure were synthesized by simple hydrothermal methods.The microstructures of sensing materials are expected to significantly affect gas sensing properties.The rod-shaped ZrO_(2)(ZrO_(2)-R)displayed the advantages such as higher crystallinity,larger pore size,narrower band gap and more chemisorbed adsorbed oxygen,compared to hollow sphere-shaped ZrO_(2)(ZrO_(2)-HS),stellate-shaped ZrO_(2)(ZrO_(2)–S).The ZrO_(2)-R sensor showed the highest response towards 30 ppm NO_(2)(423.8%)at room temperature,and a quite high sensitivity of 198.0%for detecting 5 ppm NO_(2).Although ZrO_(2)-HS and ZrO_(2)–S sensors exhibited lower response towards 30 ppm NO_(2)(232.9%and 245.1%),the response time and recovery time of these two sensors are 5 s/19 s and 4 s/3 s,respectively.This work can provide a new strategy for the development of roomtemperature metal-oxide-based sensors. | Yuhua Yan Zongtao Ma Jingyao Sun Miaomiao Bu Yanming Huo Ziying Wang Yunfei Li Ning Hu | 2021 | Nano Materials Science2021，3，3： | 1 |
| 8 | Enhanced open-circuit voltage in methoxyl substituted benzodithiophene-based polymer solar cells显示文摘The open-circuit voltage(V_(oc))is one of the important parameters that influence the power conversion efficiency(PCE)of polymer solar cells.Its value is mainly determined by the energy level offset between the highest occupied molecular orbital(HOMO)of the donor and the lowest unoccupied molecular orbital(LUMO)of the acceptor.Therefore,decreasing the HOMO value of the polymer could lead to a high V_(oc)and thus increasing the cell efficiency.Here we report a facile way to lower the polymer HOMO energy level by using methoxyl substituted-benzodithiophene(BDT)unit.The polymer with the methoxyl functionl group(POBDT(S)-T1)exhibited a HOMO value of-5.65 eV,which is deeper than that(-5.52 eV)of polymer without methoxyl unit(PBDT(S)-T1).As a result,POBDT(S)-T1-based solar cells show a high V_(oc)of 0.98 V and PCE of 9.2%.In contrast,PBDT(S)-T1-based devices show a relatively lower V_(oc)of 0.89 V and a moderate PCE of 7.4%.The results suggest that the involvement of methoxyl group into conjugated copolymers can efficiencly lower their HOMO energy levels. | Xiaonan Xue Yao Liu Xiangyi Meng Xiaobo Sun Lijun Huo Wei Ma Yanming Sun | 2017 | Science China Chemistry2017，60，2： | 0 |
| 9 | Effects of extracts from Renshen(Radix Ginseng), Sanqi(Radix Notoginseng), and Chuanxiong(Rhizoma Chuanxiong) on F-actin in senescent microvascular endothelial cells显示文摘OBJECTIVE: To investigate the effects of extracts from Renshen(Radix Ginseng), Sanqi(Radix Notoginseng), and Chuanxiong(Rhizoma Chuanxiong) on the endothelial actin cytoskeleton in senescent human cardiac microvascular endothelial cells(HCMECs), and to propose the possible mechanism underlying the actions.METHODS: Lentiviral mediated RNA interference was applied to a replicative senescent HCMEC model by knocking down heat shock protein 27(HSP27)gene. Cells were treated with extracts from Renshen(Radix Ginseng), Sanqi(Radix Notoginseng), and Chuanxiong(Rhizoma Chuanxiong) at final concentrations of 50, 100, and 200 mg/L, respectively and with 10 μM resveratrol for 48 h. Untreated cells were used as controls. Senescence was detected by senescence β-galactosidase staining and cell proliferation was analyzed by cell counting kit-8 assays.Secreted nitric oxide levels were detected by nitrate reductase. Morphological changes of F-actin and G-actin were observed by laser scanning confocal microscopy. Protein and gene expression of Factin and HSP27 was detected by western blotting.RESULTS: Compared with the control group, the proportion of senescent HSP27 shRNA cells treated with the extracts was decreased and their proliferation was increased. In the extract intervention group, F-actin around the cell periphery became irregular and jagged fractures formed gradually and then dissipated. Moreover, some dynamic actin stress fiber filaments appeared. The G-actin stretched to the cell periphery and punctate staining was scattered in the cytoplasm. In addition, the mean optical density value of F/G-actin was decreased significantly and the protein expression of F-actin was downregulated.CONCLUSION: The extracts delayed microvascular endothelial cell senescence by downregulating the expression of F-actin through HSP27. | Wang Qiang Yang Jing Lei Yan Xiu Chengkui Huo Yanming Shi Hang | 2020 | Journal of Traditional Chinese Medicine2020，40，3： | 0 |
| 10 | The effect of high-involvement human resource management practices on supply chain resilience and operational performance显示文摘Supply chain(SC)resilience is an increasingly important topic for practitioners and academics because it is a competitive weapon for firms to cope with sC disruptive risks.This study examines the impact of high-involvement human resource management practices on SC resilience from the ability-motivation-opportunity perspective.It also examines the relationship between the dimensions of sC resilience and operational performance.Based on data collected from 206 Chinese manufacturers,the proposed hypotheses were tested using structural equation modeling.The results indicated that employee participation played the most powerful role in improving supplier,customer,and internal resilience.Moreover,employee skills only facilitate internal and customer resilience but have no significant impact on supplier resilience.By contrast,employee incentives do not influence the dimension of sC resilience.It was also found that both internal and customer resilience have positive effects on operational performance,while supplier resilience has no significant effect.The findings contribute to literature and practice. | Minhao Gu Yanming Zhang Dan Li Baofeng Huo | 2023 | Journal of Management Science and Engineering2023，8，2： | 0 |
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