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Acollaborative target tracking algorithm formultiple UAVs with inferior tracking capabilities

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Frontiers of Information Technology & Electronic Engineering 2021年第10期22卷 1334-1350页

作者： Zhi ZHENG shuncheng CAI College of Computer and Cyber Security Fujian Normal UniversityFuzhou 350117China

Target tracking is one of the hottest topics in the field of drone *** this paper,we study the multiple unmanned aerial vehicles(multi-UAV)collaborative target tracking *** propose a novel tracking method based on intention estimation and effective cooperation for UAVs with inferior tracking capabilities to track the targets that may have agile,uncertain,and intelligent *** three classic target motion modes,we first design a novel trajectory feature extraction method with the least dimension and maximum coverage constraints,and propose an intention estimation mechanism based on the environment and target trajectory *** propose a novel Voronoi diagram,called MDA-Voronoi,which divides the area with obstacles according to the minimum reachable distance and the minimum steering angle of each *** each MDA-Voronoi region,the maximum reachable region of each UAV is defined,the upper and lower bounds of the trajectory coverage probability are analyzed,and the tracking strategies of the UAVs are designed to effectively reduce the tracking gaps to improve the target sensing ***,we use the Nash Q-learning method to design the UAVs’collaborative tracking strategy,considering factors such as collision avoidance,maneuvering constraints,tracking cost,sensing performance,and path *** designing the reward mechanism,the optimal action strategies are obtained as the control input of the ***,simulation analyses are provided to validate our method,and the results demonstrate that the algorithm can improve the collaborative target tracking performance for multiple UAVs with inferior tracking capabilities.

关键词： Collaborative target tracking Intent estimation MDA-Voronoi diagram Multi-UAV Inferior

EPR and UV-vis studies of biomimetic complexes of molybdoenzyme and tungstoenzyme

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Chinese Science Bulletin 2003年第7期48卷 649-651页

作者： LU Xiaoming LIU shuncheng MAO Xi YE Zhaohui LU Jingfen Department of Chemistry Capital Normal University Beijing 100037 China Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences. Wuhan 43007I China State Key Laboratory of Natural and Biomimetic Drugs Medicine Science Center Peking University Beiing 100083 China

The Mo(Ⅴ) and W(Ⅵ) complexes of (NH3CH2- CH2NH2)3[Mo(Ⅴ)O2(OC6H4O)2] (1), (NH3CH2CH2NH2)2.5 [Mo(Ⅴ) 0.5W(Ⅵ)0.5O2(OC6H4O)2] (2) and (NH3CH2CH2NH2)2- [W(Ⅵ)O2(OC6H4O)2] (3) were synthesized by choosing cate-chol ligand which shows a good reductive property and tak-ing advantage of EMo > EW. Their EPR and UV-vis spectra were compared with the oxidized UV-vis spectra of xanthine dehydrogenase from chicken liver and xanthine oxidase from milk and the EPR spectrum of flavoenzyme from milk.

关键词：钼钨化合物仿生物质仿生合成邻苯二酚电子顺磁共振紫外光谱

Comparing kernel damage of different threshing components using high-speed cameras

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International Journal of Agricultural and Biological Engineering 2020年第6期13卷 215-219页

作者： Zheng Ma Min Han Yaoming Li shuncheng Yu Farman Ali Chandio Key Laboratory of Modern Agricultural Equipment and Technology Ministry of EducationHigh-tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu ProvinceSchool of Agricultural Equipment and EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina Sindh Agriculture University Faculty of Agricultural EngineeringTandojamSindhPakistan

Grain damage research has been a focus of many experts in the agriculture machinery industry.A threshing test-bed was developed to investigate the movement and influence of different threshing and separating units on maize *** damage to maize grains was analyzed with a high-speed camera to observe the movement and damage received by the maize *** results showed that the threshing and separating effects of the perforated concave plate were obviously lower than that of the round steel concave plate,the threshing effects of the rigid rasp bar and polyurethane rasp bar were similar,and the damage ratio of the polyurethane rasp bar was relatively *** also indicated that moisture content has a significant effect on the damage ratio and damage type of maize *** different threshing component types used in this study had an obvious effect on the degree of damage to high moisture content maize grains and the damage to high-moisture kernels during threshing could be further *** results can provide a reference for the design of threshing and separating devices in the maize combine harvesting machinery.

关键词： maize grain damage threshing process high-speed camera

Highly efficient ternary organic solar cells with excellent open-circuit voltage and fill factor via precisely tuning molecular stacking and morphology

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Science China Chemistry 2024年第3期67卷 963-972页

作者： Dinghong Sun Zhenyu Chen Jianfeng Zhang Wei Song Jingyu Shi Jintao Zhu Yuanyuan Meng Fei Jin shuncheng Yang Ziyi Ge Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211China Faculty of Material Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049China Department of Chemical and Environmental Engineering University of Nottingham NingboNingbo 315100China

The micro-morphology and molecular stacking play a key role in determining the charge transport process and nonradiative energy loss, thus impacting the performances of organic solar cells(OSCs). To address this issue, a non-fullerene acceptor PhC6-IC-F with alkylbenzene side-chain, possessing optimized molecular stacking, complementary absorption spectra and forming a cascade energy level alignment in the PM6:BTP-eC9 blend, is introduced as guest acceptor to improve efficiency of ternary OSCs. The bulky phenyl in the side-chain can regulate crystallinity and optimizing phase separation between receptors in ternary blend films, resulting in the optimal phase separations in the ternary films. As a result, high efficiencies of 18.33% as photovoltaic layer are obtained for PhC6-IC-F-based ternary devices with excellent fill factor(FF) of 78.92%. Impressively, the ternary system produces a significantly improved open circuit voltage(V_(oc)) of 0.857 V compared with the binary device,contributing to the reduced density of trap states and suppressed non-radiative recombination result in lower energy loss. This work demonstrates an effective approach for adjusting the aggregation, molecular packing and fine phase separation morphology to increase V_(oc) and FF, paving the way toward high-efficiency OSCs.

关键词： alkylbenzene side-chain morphology regulation ternary blends organic solar cells

Metformin capped Cu_(2)(OH)_(3)Cl nanosheets for chemodynamic wound disinfection

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Nano Research 2023年第3期16卷 3991-3997页

作者： Xueyu Wang Shaobo Wang Jiao Gao shuncheng Yao Teng Xu Yunchao Zhao Zeyu Zhang Tian Huang Shu Yan Linlin Li 306th Clinical College of PLA The Fifth Clinical CollegeAnhui Medical UniversityBeijing 100101China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China PLA Strategic Support Force Characteristic Medical Center Beijing 100101China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Recently,the development of chemodynamic therapy(CDT)offers a potential approach for fighting bacteria and treating infectious diseases,in which those CDT nanoagents can catalyze the generation of hydroxyl radicals(·OH)to destroy *** this work,to improve the efficiency of CDT,we have designed a new kind of metformin(Met)-capped two-dimensional Cu_(2)(OH)_(3)Cl nanosheets(CuOHCl-Met NSs)with good monodispersity,highly positive charge,and good biocompatibility for improving antibacterial effect and accelerating wound *** the capped Met,CuOHCl-Met NSs can effectively kill bacteria under a low concentration(6μg·mL^(−1))and a short treatment time(in 15 min),showing great advantages over the counterpart without *** vivo results demonstrated that CuOHCl-Met NSs accelerated the tissue regeneration of staphylococcus aureus-infected dermal *** study provides a new pathway for improving efficiency of CDT nanoagent through using old drug.

关键词： chemodynamic therapy metformin antibacterial effect wound healing drug repositioning

19.3% Efficiency ternary organic solar cells enabled by the alkyl side-chain effect of guest non-fullerene acceptors

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Science China Chemistry 2024年第8期67卷 2686-2693页

作者： Hongqian Wang Sijian Wu Daobin Yang Xueliang Yu shuncheng Yang Pengfei Ding Pengyu Yan Zaifei Ma Jianfeng Zhang Ziyi Ge School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

The effect of side-chain engineering of conjugated molecules on the morphology and device performance in binary organic solar cells has been widely investigated. However, this relationship has hardly been studied in the guest components of ternary organic solar cells. In this study, a family of non-fullerene guest acceptors, namely XY-3, XY-5 and XY-7, with hydrogen substituent,straight and branched alkyl chains on the bithiophene units, respectively, were designed and synthesized to understand their effects on aggregation properties and device performance. The straight and branched alkyl chains on the bithiophene units result in sightly blue-shifted absorption compared to the hydrogen substituent and the XY-7 demonstrates the most appropriate phase separation scale and the most balanced charge transport. Consequently, the OSCs based on D18:e C9:XY-7 achieve a high shortcircuit current density(JSC) and fill factor(FF), while maintaining the enhancement of the open-circuit voltage(VOC) achieving an efficiency of 19.32%, exceeding those of D18:e C9, D18:e C9:XY-3, D18:e C9:XY-5(PCE:18.28%, 19.04%, 18.75%, respectively). These results highlight that the side-chain engineering of Y series non-fullerene acceptors as the guest acceptors has great potential in optimizing morphology properties and promoting photovoltaic performance.

关键词： organic solar cells side chain engineering ternary strategy non-fullerene energy losses

Self-powered electrochemical water treatment system for pollutant degradation and bacterial inactivation based on high-efficient Co(OH)_(2)/Pt electrocatalyst

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Nano Research 2023年第2期16卷 2192-2198页

作者： Zhuo Wang Xi Liang Zhirong Liu Tian Huang Shaobo Wang shuncheng Yao Yiming Ding Jiaming Zhang Xingyi Wan Zhong Lin Wang Linlin Li Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Center on Nanoenergy Research School of physical Science and TechnologyGuangxi UniversityNanning 530004China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332-0245USA

Electrochemical system with electro-Fenton reaction is an effective pathway for oxidative degradation of refractory organic pollutants for water ***,the method is limited by the low catalytic efficiency and high electrical cost in practical *** work presents a self-powered and high-efficient electrochemical system for water treatment including pollutant degradation and bacterial inactivation,which is composed of a self-powered triboelectric nanogenerator(TENG)converting mechanical energy into electrical energy,a power management circuit integrated with a supercapacitor to store the harvesting electrical energy temporarily,and an electrochemical setup integrated with two-dimentional Co(OH)_(2)/Pt nanosheet as *** nanocatalyst,ultrafine Pt nanoparticles(Pt NPs)loaded on Co(OH)_(2) nanosheet(Co(OH)_(2)/Pt),is synthesized by a facile one step hydrothermal reaction without any surfactant,which can improve H_(2)O_(2)and hydroxyl radical production via redox *** self-powered electrocatalytic system is able to degrade nearly 100%of organic pollutant within 100 min,and efficiently kill *** work shows great potential to develop high-efficient and self-powered electrochemical water treatment system through integrating TENG and nanocatalyst.

关键词： triboelectric nanogenerator electro-catalysis self-powered water treatment nanocatalyst

Oxygen vacancy-engineered BaTiO_(3)nanoparticles for synergistic cancer photothermal,photodynamic,and catalytic therapy

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Nano Research 2022年第8期15卷 7304-7312页

作者： Yiming Ding Zhuo Wang Zeyu Zhang Yunchao Zhao Shangyu Yang Yalong Zhang shuncheng Yao Shaobo Wang Tian Huang Yang Zhang Linlin Li School of Chemistry and Chemical Engineering Center on Nanoenergy ResearchSchool of Physical Science&TechnologyGuangxi UniversityNanning 530004China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 100083China Key Laboratory of Semiconductor Material Sciences Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

With the rapid development of photo-responsive nanomaterials,photo-triggered therapeutic strategies such as photothermal therapy(PTT)and photodynamic therapy(PDT)have been new alternatives to current cancer therapeutic ***,we have fabricated oxygen vacancy-engineered BaTiO_(3)(BTO-Ov)nanoparticles(NPs)for near-infrared(NIR)light-triggered PTT,PDT,and catalytic therapy cooperatively for significantly improving cancer *** to pristine BaTiO_(3)nanoparticles,BTO-Ov has stronger NIR light absorption and narrower band gap structure,which results in superior photothermal conversion and superoxide radical generation capabilities through PTT and ***,due to the existence of Ti^(3+),BTO-Ov also exhibits peroxidase(POD)-like activity to produce hydroxyl radical under tumor environment,which can be further improved under 808 nm light *** in vitro and in vivo results demonstrate that such a multifunctional therapeutic nanoplatform can achieve a high therapeutic efficacy triggered by a single NIR light *** defect engineering strategy can be used as a general approach to fabricate multifunctional cancer therapeutic nanoplatform.

关键词： oxygen vacancy BaTiO_(3) photothermal therapy photodynamic therapy peroxidase

PM_(2.5) and PM_(10-2.5) chemical composition and source apportionment near a Hong Kong roadway

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Particuology 2015年第1期13卷 96-104页

作者： Yan Cheng shuncheng Lee Zhaolin Gu Kinfai Ho Yunwei Zhang Yu Huang Judith C.Chow John G.Watson Junji Cao Renjian Zhang Department of Environmental Science and Technology School of Human Settlements and Civil EngineeringXi'an Jiaotong University State Key Laboratory of Loess Quaternary Geology Institute of Earth and EnvironmentChinese Academy of Sciences Department of Civil and Structural Engineering Research Center for Environmental Technology and ManagementThe Hong Kong Polytechnic University School of Public Health and Primary Care The Chinese University of Hong Kong Division of Atmospheric Sciences Desert Research Institute Key Laboratory of Regional Climate-Environment Research for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of Sciences

Twenty-four-hour PM2.5 and PM10 samples were collected simultaneously at a highly trafficked road-side site in Hong Kong every sixth day from October 2004 to September 2005. The mass concentrations of PM2.5, PMlo-2.5 （defined as PM10 - PM2.5）, organic carbon （OC）, elemental carbon （EC）, water-soluble ions, and up to 25 elements were determined. Investigation of the chemical compositions and potential sources revealed distinct differences between PM2.5 and PM10-2.5. The annual average mass concentrations were 55.5 ＋ 25.5 and 25.9±15.7μg/m^3 for PM2.5 and PM10-2.5, respectively. EC, OM （OM = OC × 1.4）, and ammonium sulfate comprised over -82% of PM2.5, accounting for -29%, -27%, and -25%, respectively, of the PM2.5 mass. Low OC/EC ratios （less than 1） for PM2.5 suggested that fresh diesel-engine exhaust was a major contributor. Seven sources were resolved for PM2.5 by positive matrix factorization （PMF） model, including vehicle emissions （-29%）, secondary inorganic aerosols （-27%）, waste incinera- tor/biomass burning （-23%）, residual oil combustion （-10%）, marine aerosols （-6%）, industrial exhaust （-4%）, and resuspended road dust （-1%）. EC and OM comprised only -19% of PM10-2.5. The average OC/EC ratio of PM10-2.5 was 7.8± 14.2, suggesting that sources other than vehicular exhaust were important contributors. The sources for PM10-2.5 determined by the PMF model included -20% traffic-generated resuspension （e.g., tire dust/brake linear/petrol evaporation）, -17% locally resuspended road dust, -17% marine aerosols, -12% secondary aerosols/field burning, and -11% vehicle emissions.

关键词： PM2.5 PM10-2.5 Roadside Chemical composition Source apportionment Hong Kong