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The cosemisimplicity and cobraided structures of monoidal comonads

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Frontiers of Mathematics in China 2022年第3期17卷 485-499页

作者： Xiaohui zhang Hui WU School of Mathematical Sciences Qufu Normal UniversityQufu 273165China

In this paper,we study the category of corepresentations of a monoidal *** show that it is a semisimple category if and only if the monoidal comonad is a cosemisipmle(coseparable)comonad,and it is a braided category if and only if the monoidal comonad admit a cobraided *** last,as an application,the braided structure and the semisimplicity of the Hom-comodule category of a monoidal Hom-bialgebra are discussed.

关键词： Comonads braided cateogries monoidal Hom-Hopf algebras

Use of 25-hydroxyvitamin D_(3) in diets for sows:A review

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Animal Nutrition 2021年第3期7卷 728-736页

作者： Lianhua zhang Xiangshu Piao State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Dietary supplementation with 25-hydroxyvitamin D_(3)(25OHD_(3)),as an alternative source of vitamin D,is becoming increasingly popular due to its commercialization and more efficient *** addition of 25OHD_(3)rather than its precursor vitamin D_(3)can circumvent the 25-hydroxylation reaction in the liver,indicating that supplementation of 25OHD_(3)can rapidly improve the circulating vitamin D status of *** experiments have reported that maternal 25OHD_(3)supplementation could increase sow performances and birth outcomes and promote circulating vitamin D status of sows and their *** milk fat content was observed in many experiments;however,others demonstrated that adding 25OHD_(3)to lactating sow diets increased the contents of milk protein and *** an inconsistency between the results of different experiments exists,these studies suggested that maternal 25OHD_(3)supplementation could alter milk composition via its effects on the mammary *** studies have demonstrated that adding 25OHD_(3)to sow diets could improve the mRNA expressions of insulin-induced gene 1(INSIg1)and sterol regulatory element-binding protein 1(SREBP1)in the mammary gland cells from milk and increase the mRNA expressions of acetyl-CoA carboxylaseα(ACCα)and fatty acid synthase(FAS)in the mammary gland *** 25OHD_(3)supplementation promotes skeletal muscle development of piglets before and after parturition,and improves bone properties including bone density and bone breaking force in lactating sows and their ***,25OHD_(3)supplementation in sow diets could improve neonatal bone development via regulation of milk fatty acid composition related to bone metabolism and *** this review,we also discuss the effects of adding 25OHD_(3)to sow diets on the gut bacterial metabolites of suckling piglets,and propose that butyrate production may be associated with bone ***,to better understand

关键词： 25-Hydroxyvitamin D3 Milk composition Skeletal muscle Bone quality Bacterial metabolite

Privacy-preserving decision tree for epistasis detection

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Cybersecurity 2019年第1期2卷 138-149页

作者： Qingfeng Chen Xu zhang Ruchang zhang School of Computer Electronics and Information Guangxi UniversityNanningPeople’s Republic of China Department of Computer Science and Information Technology La Trobe UniversityMelbourneVictoria 3086Australia

The interaction between gene loci,namely epistasis,is a widespread biological genetic *** genome-wide association studies(gWAS),epistasis detection of complex diseases is a major *** many approaches using statistics,machine learning,and information entropy were proposed for epistasis detection,the privacy preserving for single nucleotide polymorphism(SNP)data has been largely ***,this paper proposes a novel two-stage approach.A fusion strategy assists in combining and sorting the SNPs importance scores obtained by the relief and mutual information,thereby obtaining a candidate set of *** avoids missing some SNPs with strong ***,differentially private decision tree is applied to search for *** achieves the efficient epistasis detection of complex diseases on the basis of privacy preserving compared with heuristic *** recognition rate on simulation data set is more than 90%.Also,several susceptible loci including rs380390 and rs1329428 are found in the real data set for Age-related Macular Degeneration(AMD).This demonstrates that our method is promising in epistasis detection.

关键词： Epistasis Relief Mutual information Decision tree Differential privacy

Cooperative output feedback consensus control of second-order nonlinear multi-agent systems under Markovian switching topologies

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Journal of Control and Decision 2023年第4期10卷 476-483页

作者： Chuanrui Wang Hua zhang Shuai zhang Shanghai Zhongchuan SDT-NERC Co. Ltd.ShanghaiPeople’s Republic of China Marine Design and Research Institute of China ShanghaiPeople’s Republic of China

This paper deals with the leader-following consensus problem for a class of second-order nonlinear multi-agent systems by output *** communication topology is characterized by a Markovian switching ***,an input-driven observer is introduced to estimate the consensus error of each follower ***,a cooperative nonlinear control law is constructed using the relative output information between neighboring agents by employing the backstepping methodology,which achievesleader-following consensusin mean square *** with the existing results,the nonlinear functions are required to satisfy polynomial growth condition rather than globally Lipschitz growth or Lipschitz-like growth condition.A numerical example is given to illustrate the theoretical results.

关键词： Multi-agent systems nonlinear systems Markovian switching topology output feedback

Neoarchean Magmatic Events in the Western Songnen Massif,Central Asian Orogenic Belt:Timing and Tectonic Significance

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Acta geologica Sinica(English Edition) 2023年第2期97卷 436-448页

作者： WU Xinwei LIU Zhenghong LIU Yongjiang zhang Chao SHAO Jun zhang Chao zhang Yujin gUO Wei LIU Baoshan zhang guangyu Shenyang Center of China geological Survey Shenyang 110034China Key Laboratory of Deep Mineral Resources Exploration and Evaluation Department of Natural Resource of Liaoning ProvinceShenyang 110034China College of Earth Sciences Jilin UniversityChangchun 130061China Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Laboratory of Submarine Geosciences and Prospecting TechniquesMOE and College of Marine GeosciencesOcean University of ChinaQingdaoShandong 266100China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao Shandong 266100China School of Resources and Environmental Engineering Shandong University of TechnologyZiboShandong 255049China

Whether a Neoarchean basement existing in the Songnen massif is currently *** of Archean magmatism from the Songnen Massif is helpful to resolve this ***,we report newly discovered Neoarchean Shanquan pluton in the Western Songnen *** Neoarchean Shanquan pluton are mainly composed of granites that are exposed near the town of Shanquan in Heilongjiang ***-ICP-MS zircon U-Pb dating reveals that the sample 2015TW1 has an upper intercept age of 2801±69 Ma and a weighted mean age of 2708±18 Ma,while samples LJ27QY1 and LJ27QY2 have upper intercept ages of 2677±57 Ma and 2653±18 Ma,and weighted mean ages of 2649±10 Ma and 2653±15 Ma,*** indicates that these granites were formed at~2.7 *** of the~2.7 ga zircons have older TDM2 ages of 2762–3326 Ma with positiveεHf(t)values ranging from 0 to 6.4,while a few of the zircons have negativeεHf(t)values ranging from-8.1 to-11.5 and older TDM2 ages varying from 3158 to 3264 *** zircon Hf isotopes indicate that Paleo-Mesoarchean crusts might once existed in the Songnen Massif,and the studied Neoarchean magmas were principally derived from partial melting of these Paleo-Mesoarchean ancient *** on the geochronological spectrum of magmatic and detrital zircons,the Songnen,Erguna,Jiamusi,Bureya massifs may have a common basement prior to the Neoproterozoic and may even be linked with the Triam Craton.

关键词： tectonic attribute Neoarchean magmatism Precambrian basement Longjiang area Songnen Massif

Investigation on steelmaking dust recycling and iron oxide red preparing

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Journal of University of Science and Technology Beijing 2008年第1期15卷 24-28页

作者： Pingfeng Fu Qiang zhang College of Arts ＆ Science Beijing Union University Beijing 100083 China School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China

To investigate the physical and chemical properties of the steelmaking dust, wet sieve separation, XRD, SEM, EDS, and traditional chemical analysis were carded out to obtain the particle size distribution, mineralogy, morphology, and the chemical composition of the dust. The dust with a total Fe content of 64.08wt% has coarse metallic iron, magnetite and hematite grains, while free clay minerals with a size of 〈38 μm are mainly iosidefite, calcium silicate, and calcite, which are conglomerated to each other. By following the procedures of wet magnetic separation, acid leaching, and oxidization calcination, magnetic materials were recycled and further prepared as iron oxide red with a productivity of 0.54 ton per unit ton of the dust. Middle iron concentrate with an Fe content of 65.92wt% can be reused as feeding material in the ironmaking industry. Additionally, washed water from acid leaching with an Fe^3＋ ion content of less than 5 g·L^-1 was recovered as feeding water in the wet magnetic separation procedure. 2008 University of Science and Technology Beijing. All fights reserved.

关键词： steelmaking dust iron oxide red wet magnetic separation acid leaching

Leader-follower Consensus of Upper-triangular Nonlinear Multi-agent Systems

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IEEE/CAA Journal of Automatica Sinica 2014年第2期1卷 210-217页

作者： Chenghui zhang Le Chang Xianfu zhang School of Control Science and Engineering Shandong University

This paper is concerned with the leader-follower consensus problem by using both state and output feedback for a class of nonlinear multi-agent systems. The agents considered here are all identical upper-triangular nonlinear systems which satisfy the Lipschitz growth condition. First, it is shown that the leader-follower consensus problem is equivalent to the control design problem of a high-dimensional multi-variable ***, by introducing an appropriate state transformation, the control design problem can be converted into the problem of finding a constant parameter, which can be obtained by solving the Lyapunov equation and estimating the nonlinear terms of the given system. At last, an example is given to verify effectiveness of the proposed consensus algorithms.

关键词： Multi-agent systems Nonlinear systems Observers Protocols Topology Lipschitz condition leader-follower consensus upper-triangular nonlinear systems Multi-agent systems Lyapunov equation topology Observers Nonlinear systems protocols Lipschitz condition State Change design problems

Quantitative phase-field simulation of the entire solidification process in one hypereutectic Al–Si alloy considering the effect of latent heat

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Progress in Natural Science:Materials International 2021年第3期31卷 428-433页

作者： Kai Wang Lijun zhang Institute for Energy and Climate Research IEK-2 Forschungszentrum Jülich State Key Laboratory of Power Metallurgy Central South University

The multi-phase-field(MPF) model coupled with reliable CALPHAD thermodynamic/atomic mobility descriptions, appropriate faceted anisotropy and key experimental validation is employed to perform the quantitative simulation of the microstructure evolution of the hypereutectic Al-16 wt%Si alloy during solidification. By considering the effect of latent heat released during the eutectic phase transformation in the simulation, the appropriate entire solidification sequence is obtained. All the characteristics in the as-cast microstructure can be nicely reproduced, including the primary(Si) encircled by the second primary(Al) halo, and the coupled eutectic grains appearing at the Liquid/(Al) interface rather than Liquid/(Si) interface. Moreover, three types of growth patterns of eutectic(Si) with different lengths are distinguished according to the distance between primary(Si)and the nucleation position of eutectic(Si). Furthermore, the evaluated ratios of width to length for 50 eutectic(Si) grains due to the MPF simulation are in good agreement with the experimental data. The quantitative phasefield simulation of the entire solidification process of the hypereutectic Al-16 wt%Si alloy in the present work is anticipated to pave the way for revealing the grain refinement mechanism in hypereutectic Al–Si alloys in the future studies.

关键词： Al–Si hypereutectic Alloy Solidification Phase-field simulation Latent heat Eutectic (Si)

Decompositions of stochastic convolution driven by a white-fractional gaussian noise

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Frontiers of Mathematics in China 2021年第4期16卷 1063-1073页

作者： Ran WANg Shiling zhang School of Mathematics and Statistics Wuhan UniversityWuhan 430072China

Let u={u(t,x);(t,x)∈R_(+)×R}be the solution to a linear stochastic heat equation driven by a gaussian noise,which is a Brownian motion in time and a fractional Brownian motion in space with Hurst parameter H∈(0,1).For any given x∈R(resp.,t∈R_(+)),we show a decomposition of the stochastic process t(→)u(t,x)(resp.,x(→)u(t,x))as the sum of a fractional Brownian motion with Hurst parameter H/2(resp.,H)and a stochastic process with C^(∞)-continuous *** applications of those decompositions are discussed.

关键词： Stochastic heat equation fractional Brownian mulion(fBin) path regularity law of the iterated logarithm