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Human guided cooperative robotic agents in smart home using beetle antennae search

Science China(Information Sciences) 2022年第2期65卷 89-105页

作者： Ameer Tamoor KHAN shuai li Xinwei CAO Department of Computing The Hong Kong Polytechnic University School of Information Science and Engineering Lanzhou University School of Management Shanghai University

In this paper, we propose a control framework for cooperative robotic agents, which constitutes an essential component in the construction of futuristic smart-homes. Such agents assist humans in efficiently completing household chores. Usability, human friendliness, autonomy, and intelligent decisionmaking are the top considerations for designing such a system along with reliability, accuracy, and *** a distributed control algorithm considering these goals is a complicated task since classical control frameworks focus on specialized robots working in an industrial environment and do not capture unique features of the home environment. For example, a household robotic agent needs to perform several general-purpose tasks without assuming that the user has specialized training similar to an industrial operator. Since the challenges and goals in designing a household robotic agent are different, there is a need for a control framework centered around the required goals. The proposed control framework considers the collision problem between several cooperative robotic agents while assisting the human user. We propose an optimization-driven approach to avoid static and dynamic obstacles present in the environment while simultaneously controlling the robots as commanded by the user. We formulate the optimization problem that incorporates the required goals and then use a neural network to solve the optimization problem efficiently. The neural network, beetle antennae search zeroing neural network(BASZNN), is inspired by the natural behavior of beetles. It solves the optimization problem in a gradient-free manner contributing to the computational efficiency of the neural network. Additionally, the distributed-processing capability of the neural networks contributes to computational efficiency and matches the distributed nature of the underlying problem. For testing the performance of BASZNN, we use V-REP and MATLAB to simulate a household environment. Th

关键词： smart-home assistive agents metaheuristic optimization beetle antennae search zeroing neural network human guided

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Spatiotemporal consistency-based adaptive hand-held video stabilization

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Science China(Information Sciences) 2020年第1期63卷 226-228页

作者： Xiao li shuai li Hong QIN Aimin HAO State Key Laboratory of Virtual Reality Technology and Systems Beihang University Beihang University Qingdao Research Institute Department of Computer Science Stony Brook University

This study develops a novel, joint optimization method to successively respect spatial structure consistency and temporal feature constraints. Our method is more flexible and adaptive as we regard the camera multitrack motion to be noisy signals and adaptively suppress the noise without manual intervention. In addition, our method can achieve stabilization effects similar to that obtained by 3D

关键词： IMF EMD red frame Spatiotemporal consistency-based adaptive hand-held video stabilization

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Flight activity promotes reproductive processes in the fall armyworm,Spodoptera frugiperda

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Journal of Integrative Agriculture 2021年第3期20卷 727-735页

作者： GE Shi-shuai HE Wei HE li-mei YAN Ran ZHANG Hao-wen WU Kong-ming State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Institute of Applied EcologyFujian Agriculture and Forestry UniversityFuzhou 350002P.R.China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China College of Plant Protection Henan Agricultural UniversityZhengzhou 450002P.R.China

The fall armyworm(FAW),Spodoptera frugiperda(Lepidoptera:Noctuidae),has invaded many countries in Africa and Asia since 2016,posing a major threat to world food ***-distance migration and strong reproductive ability form the biological basis of its rapid population expansion,but the relationship between the flight and reproduction of FAW has not been studied in ***,an empirical assessment of this relationship in an invasive FAW population in China found that 1-3-day-old adults which had undergone 10-h tethered flights had a significantly shorter pre-oviposition period and greater oviposition synchronization,but did not show any differences in fecundity,oviposition period,mating percentage or other reproductive *** studies on moths after 1.25-15-h tethered flights indicated that the reproductive process of adults could be fully triggered by flight activity longer than 2.5 *** of the reproductive organs also showed that tethered flight promoted ovarian and testicular development of *** results show that appropriate moth flight activity significantly speeds up the reproductive process of FAW,which increases our knowledge on its migratory biology in relation to regional outbreaks.

关键词： flight reproduction migration invasion biology movement ecology

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Bioturbation of Thalassinoides from the Lower Cambrian Zhushadong Formation of Dengfeng area, Henan Province, North China

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Journal of Palaeogeography 2021年第1期10卷 39-54页

作者： Yu-Chao Fan Yong-An Qi ming-Yue Dai Da li Bing-Chen liu Guo-shuai Qing School of Resources and Environment Henan Polytechnic UniversityJiaozuo 454000Henan ProvinceChina

Bioturbation plays a critical role in sediment mixing and biogeochemical cycling between sediment and *** abundance of bioturbation structures, dominated by Thalassinoides, occurs in carbonate rocks of the Cambrian Series 2 Zhushadong Formation in the Dengfeng area of western Henan Province, North China. Determination of elemental geochemistry can help to establish the influence of burrowing activities on sediment biogeochemical cycling, especially on changes in oxygen concentration and nutrient regeneration. Results show that there is a dramatic difference in the bioturbation intensity between the bioturbated limestone and laminated dolostone of the Zhushadong Formation in terms of productivity proxies(Baex, Cu, Ni, Sr/Ca) and redox proxies(V/Cr, V/Sc, Ni/Co). These changes may be related to the presence of Thalassinoides bioturbators, which alter the particle size and permeability of sediments, while also increase the oxygen concentration and capacity for nutrient *** with modern studies shows that the sediment mixing and reworking induced by Thalassinoides bioturbators significantly changed the primary physical and chemical characteristics of the Cambrian sediment,triggering the substrate revolution and promoting biogeochemical cycling between sediment and seawater.

关键词： Thalassinoides Sediment mixing Oxygen concentration Nutrient regeneration Trace element proxy Early Cambrian North China Platform

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Exact Tail Asymptotics for a Discrete-time Preemptive Priority Queue

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Acta Mathematicae Applicatae Sinica 2015年第1期31卷 43-58页

作者： Yang SONG Zai-ming liU Hong-shuai DAI School of Mathematics and Statistics Central South University School of Statistics Shandong University of Finance and Economics

In this paper, we consider a discrete-time preemptive priority queue with different service com- pletion probabilities for two classes of customers, one with high-priority and the other with low-priority. This model corresponds to the classical preemptive priority queueing system with two classes of independent Poisson customers and a single exponential server. Due to the possibility of customers＇ arriving and departing at the same time in a discrete-time queue, the model considered in this paper is more complicated than the continuous- time model. In this model, we focus on the characterization of the exact tail asymptotics for the joint stationary distribution of the queue length of the two types of customers, for the two boundary distributions and for the two marginal distributions, respectively. By using generating functions and the kernel method, we get the exact tail asymptotic properties along the direction of the low-priority queue, as well as along the direction of the high-priority queue.

关键词： discrete-time queue stationary distribution kernel method exact tail asymptotics

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Laboratory-based flight performance of the fall armyworm,Spodoptera frugiperda

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Journal of Integrative Agriculture 2021年第3期20卷 707-714页

作者： GE Shi-shuai HE li-mei HE Wei YAN Ran Kris AGWYCKHUYS WU Kong-ming State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Institute of Applied EcologyFujian Agriculture and Forestry UniversityFuzhou 350002P.R.China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China College of Plant Protection Henan Agricultural UniversityZhengzhou 450002P.R.China

In late 2018,the fall armyworm(FAW)Spodoptera frugiperda Smith(Lepidoptera:Noctuidae)made its arrival in China and its populations have since proliferated across most of eastern *** *** exhibits a considerable dispersal capacity and engages in long-distance migration,there’s only scant information on the species’flight ***,we empirically assessed *** flight activity under varying climatic conditions using a flight *** specifically,under laboratory conditions,FAW exhibited superior flight performance at 20-25℃ and 60-90%relative humidity(RH).When quantifying flight performance over five consecutive nights(i.e.,10 h/night),all flight parameters initially increased and then gradually dropped and FAW adults attained a total flight distance,duration and velocity equal to 63.73 km(48.42-94.12 km)(median,quartile range),24.12 h(20.87-27.73 h)and 2.73 km h^(-1)(2.13-3.33 km h^(-1)),*** work constitutes a first comprehensive assessment of *** flight performance and provides baseline information for future efforts to forecast spatiotemporal changes in its geographical distribution,movement patterns and invasion *** can ultimately permit a timely and targeted deployment of area-wide pest management measures against this newly-invasive pest in China and across eastern Asia.

关键词： aerobiology flight mill flight capacity migration invasion biology movement ecology

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Effect of Ce on the cleanliness, microstructure and mechanical properties of high strength low alloy steel Q690E in industrial production process

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International Journal of Minerals,Metallurgy and Materials 2019年第11期26卷 1372-1384页

作者： Hao Wang Yan-ping Bao ming Zhao Min Wang Xiao-ming Yuan shuai Gao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Technical Center of Inner Mongolia Baotou Steel Union Co. Ltd.Baotou 014010China The Rare Earth Steel Plates Plant of Baotou Iron and Steel Co. Ltd.Baotou 014010China

In order to improve the strength and toughness of Q690 E steel sheets,the effect of rare earth element Ce on the strength and toughness of Q690 E steel was studied by means of transmission electron microscopy,scanning electron microscopy,and metallographic *** results showed that the addition of Ce in steel limited the combination of S with Mn and Ca,transformed Al2O3 inclusion into spherical CeAlO3 inclusion,and modified the precipitate form of some composite inclusions of TiN and sulfide oxides into TiN precipitation *** inclusions were *** size of inclusions was decreased from 3–5μm to 1–2μm,and the distribution was *** played a role in purifying molten steel through desulphurization and ***,the addition of Ce in steel effectively increased the nucleation particles in the liquid phase,improved the nucleation rate,enlarged the equiaxed grain refinement area,and limited the development of columnar *** average grain size of slab decreased from 45.76 to 35.25μm,and the proportion of large grain size(>50μm)decreased from 40.41%to 23.74%.The macrostructural examination of slab was improved from B0.5 to C2.0,which realized the refinement of the solidified structure and reduced the banded structure of hot rolled *** addition,due to the inheritance of refined structure in the upstream,the recrystallization of deformed austenite and the growth of grain after recrystallization were restrained,and a refined tempered sorbite structure was *** rare earth element Ce was added,the width of the martensite lath bundle was narrowed from about 500 nm to about 200 nm,which realized a remarkable grain refinement strengthening and toughening *** properties such as tensile,yield,and low-temperature impact toughness were significantly improved.

关键词： rare earth HSLA steel inclusion structure grain refinement strengthening

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Two-in-one tecton strategy to construct single crystalline hydrogen-bonded organic framework with high proton conductivity above 100℃

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Science China Chemistry 2023年第9期66卷 2563-2568页

作者： Xiao-Lu Wang linfeng liang shuai Dou Xian-ming Zhang Institute of Crystalline Materials Shanxi UniversityTaiyuan 030006China Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China

By tactically integrating two different kinds of proton donors and acceptors into one supramolecular tecton, a new crystalline hydrogen-bonded organic framework(HOF-SXU-1) has been developed. HOF-SXU-1 features a remarkable proton conductivity as high as 6.32 mS cm^(-1) and an extremely low activation energy of 0.16 eV at 160℃ under anhydrous N_(2) *** contrast, under identical conditions, the organic precursors of HOF-SXU-1 only exhibit negligible proton conduction performance, demonstrating that the formation of HOF is crucial for excellent proton conduction performance.

关键词： two-in-one strategy hydrogen-bonded organic framework proton conduction solid state electrolyte

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Geometrical design of variable ratio tooth profile based on Boolean subtraction operation and a novel modification method

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International Journal of Agricultural and Biological Engineering 2020年第5期13卷 125-133页

作者： Ziru Niu Jianlei li shuai Xin liangliang Zou Yuhua li Jialin Hou ming Tu Ting Sun College of Mechanical and Electronic Engineering Shandong Agricultural UniversityTai’an 271018ShandongChina Shandong Provincial Key Laboratory of Horticultural Machinery and Equipment Tai’an 271018ShandongChina College of Engineering Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Agricultural Equipment in Mid-lower Reaches of the Yangtze River Ministry of Agriculture and Rural AffairsWuhan 430070China Shandong Huasheng Pesticide Machinery Co. LtdLinyi 276017ShandongChina

Variable transmission ratio racks show great potential in rice transplanters as a key component of variable transmission ratio steering to balance steering portability and *** objective of this study was to develop a novel geometrical design method to achieve quick,high-quality modeling of the free curvilinear tooth profile of a variable transmission ratio ***,a discrete envelope motion 3D model was established between the pinion-sector and the variable transmission ratio rack blank based on the mapping relationship between the rotation angle of the pinion-sector and the displacement of the rack,according to the variable transmission ratio *** on the loop Boolean subtraction operation,which removed the pinion-sector from the rack blank during all moments of the discrete motion process,the final complex changing tooth shape of the variable transmission ratio rack was ***,since Boolean cutting residues made the variable ratio tooth surface fluctuant and eventually affected the precision of the model,this study proposed a modification method for establishing a smooth and continuous tooth ***,a novel fitting algorithm used approximate variable ratio tooth profile points extracted from the Boolean cutting marks and generated a series of variable ratio tooth profiles by utilizing B-spline with different ***,based on a transmission stability simulation,the variable ratio tooth profile with optimal dynamic performance was selected as the final ***,tests contrasting the transmission stability of the machining samples of the initial variable ratio tooth profile and the final variable ratio tooth profile were *** results indicated that the final variable ratio tooth profile is more effective than the initial variable ratio tooth ***,the proposed variable ratio tooth profile modeling and modification method for eliminating Boolean cutting residues and improving surface accuracy is prov

关键词： rice transplanter steering variable ratio tooth profile variable ratio curve Boolean subtraction operation transmission stability

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Efficient aerobic oxidative desulfurization via three-dimensional ordered macroporous tungsten-titanium oxides

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Petroleum Science 2022年第1期19卷 345-353页

作者： ming Zhang Yu-Jie Fu Chao Wang Yan-Chen Wei Yong-Kang Gao Wen-Shu Yang Lei Fan Wen-shuai Zhu Hua-ming li Institute for Energy Research School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang212013PR China Institute of Environmental Health and Ecological Security School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013PR China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225002PR China

A series of three-dimensional ordered macroporous(3 DOM)W-TiO_(2)catalysts have been prepared through a facile colloidal crystal template *** prepared materials characterized in detail exhibited enhanced catalytic activity in aerobic oxidative desulfurization *** experimental results indicated that the as-prepared materials possessed excellent 3 DOM structure,which is beneficial for the catalytic *** sample 3 DOM W-TiO_(2)-20 exhibited the highest activity in ODS process,and the sulfur removal can reach 98%in 6 ***,the oxidative product was also analyzed in the reaction process.

关键词： Tungsten doped Three-dimensional ordered microporous material Titanium oxide Aerobic oxidative desulfurization Sulfur compounds

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