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Flatness predictive model based on T-S cloud reasoning network implemented by DSP

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Journal of Central South University 2017年第10期24卷 2222-2230页

作者： ZHANG Xiu-ling gao wu-yang LAI Yong-jin CHENG Yan-tao Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan UniversityQinhuangdao 066004China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan UniversityQinhuangdao 066004China

The accuracy of present flatness predictive method is limited and it just belongs to software simulation. In order to improve it, a novel flatness predictive model via T-S cloud reasoning network implemented by digital signal processor(DSP) is proposed. First, the combination of genetic algorithm(GA) and simulated annealing algorithm(SAA) is put forward, called GA-SA algorithm, which can make full use of the global search ability of GA and local search ability of SA. Later, based on T-S cloud reasoning neural network, flatness predictive model is designed in DSP. And it is applied to 900 HC reversible cold rolling mill. Experimental results demonstrate that the flatness predictive model via T-S cloud reasoning network can run on the hardware DSP TMS320 F2812 with high accuracy and robustness by using GA-SA algorithm to optimize the model parameter.

关键词： T-S cloud reasoning neural network cloud model flatness predictive model hardware implementation digital signal processor genetic algorithm and simulated annealing algorithm (GA-SA)

The Right Gorenstein Subcategory rg(l,D)

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Acta Mathematica Sinica,English Series 2023年第2期39卷 339-362页

作者： Zeng Hui gao Wan wu College of Applied Mathematics Chengdu University of Information TechnologyChengdu610225China

In this paper,we generalize the idea of Song,Zhao and Huang[***.J.,70,483±504(2020)]and introduce the notion of right(left)Gorenstein subcategory rg(l,∂)(lg(l,D)),relative to two additive full subcategoriesφand∂of an abelian category *** the assumption thatφ⊆∂,we prove that the right Gorenstein subcategory rg(l,D)possesses many nice properties that it is closed under extensions,kernels of epimorphisms and direct ***φ⊆Dandφ⊥D,we show that the right Gorenstein subcategory rg(l,D)admits some kind of *** we discuss a resolution dimension for an object in A,called rg(l,D)-projective ***,we prove that if(U,V)is a hereditary cotorsion pair with kernelφhas enough injectives,such that U⊆Dand U⊥∂,then(rg(l,D),φφ)is a weak Auslander±Buchweitz context,whereφis the subcategory of A consisting of objects with finiteφ-projective dimension.

关键词： Right Gorenstein subcategory rg(l,D)-projective dimension cotorsion pair weak Auslander-Buchweitz context

Simulation on scrap melting behavior and carbon diffusion under natural convection

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International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 380-389页

作者： Ming gao jin-tao gao Yan-ling Zhang Shu-feng Yang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

A 3D model applying temperature-and carbon concentration-dependent material properties was developed to describe the scrap melting behavior and carbon diffusion under natural *** results agreed reasonably well with experimental *** melting was subdivided into four stages:formation of a solidified layer,rapid melting of the solidified layer,carburization,and carburization+normal *** carburization stage could not be ignored at low temperature because the carburization time for the sample investigated was 214 s at 1573 K compared to 12 s at 1723 *** thickness of the boundary layer with significant concentration difference at 1573 K increased from 130μm at 5 s to 140μm at 60 *** maximum velocity caused by natural convection decreased from 0.029 m·s^(−1)at 5 s to 0.009 m·s^(−1)at 634 s because the differences in temperature and density between the molten metal and scrap decreased with time.

关键词： scrap melting natural convection carbon diffusion numerical simulation electron probe micro-analyzer

Design and Construction of Lightweight Domain Ontology of Tectonic Geomorphology

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Journal of Earth Science 2023年第5期34卷 1350-1357页

作者： jinglun Xi jin wu Mingbo wu State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

As data size grows and computing power evolves, artificial intelligence has become one of the most important tools for assisting data-intensive scientific discoveries. The development of artificial intelligence applications in geoscience requires the understanding of enormous quantities of concepts and thus requires the organization of knowledge into a structured form, which is ontology. Compared with common-sense ontologies, the concepts in geoscience are extremely abstract and difficult to understand. It is challenging to use natural language processing technologies to build ontologies in geoscience from the bottom up. Meanwhile, applications of ontology in deep learning and data integration also reveal the importance of constructing a geoscience ontology. Because of the complexity and transdisciplinary nature, this study focuses on the field of tectonic geomorphology. Based on the understanding and experience of experts in geoscience, a top-down approach is used to construct a tectonic geomorphology ontology as part of the geoscience ontology. This research started with the proposal of a method for constructing ontologies, then built a tectonic geomorphology ontology, and finally checked, validated, and applied the ontology, covering common concepts in geoscience and dedicated concepts in tectonic geomorphology. The tectonic geomorphology ontology is an important part of the whole geoscience ontology.

关键词： ontology tectonic geomorphology fault artificial intelligence

豹纹鳃棘鲈生长差异分化相关lncRNA与mRNA加权基因共表达网络分析

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渔业科学进展 2025年第1期46卷 46-58页

作者：高进刘金叶陈傅晓王永波符书源海南省海洋与渔业科学院海南海口571126 海南热带海洋学院崖州湾创新研究院海南三亚572025 海南省热带海水养殖工程技术研究中心海南海口571126

为揭示豹纹鳃棘鲈(Plectropomus leopardus)生长差异分化的分子调控作用机制,该研究利用豹纹鳃棘鲈中间培育过程中不同生长阶段(42、70和91日龄)的18个幼鱼肌肉组织样本进行全转录组测序,获得lncRNA和mRNA基因表达谱数据,采用加权基因... 详细信息

为揭示豹纹鳃棘鲈(Plectropomus leopardus)生长差异分化的分子调控作用机制,该研究利用豹纹鳃棘鲈中间培育过程中不同生长阶段(42、70和91日龄)的18个幼鱼肌肉组织样本进行全转录组测序,获得lncRNA和mRNA基因表达谱数据,采用加权基因共表达网络分析(WGCNA)方法构建生长差异分化相关lncRNA和mRNA的共表达网络。通过特异性基因模块中差异表达基因的GO和KEGG富集对模块生物学功能进行分析,运用Cytoscape软件构建基因互作网络,挖掘豹纹鳃棘鲈生长差异分化相关的关键候选基因。结果显示,基因差异表达分析共筛选到6252个差异表达mRNA和367个差异表达lncRNA;共表达网络分析获得MEmagenta、MEgreenyellow和MEblack共3个生长差异分化特异性基因模块;GO和KEGG富集分析显示,特异性模块中差异表达基因显著富集于肌肉蛋白形成、横纹肌组织发育调控、主轴组织形成等生物学过程,参与了蛋白酶体、肌动蛋白细胞骨架调控及肌醇磷酸代谢等与生长差异分化相关的代谢通路;筛选3个特异性模块中权重和连通度高的lncRNA和mRNA构建基因互作网络,得到包括psmd6、nmt1、als2、brcc3、kank1、ada12、at131和hdac3等在内的生长差异分化关键基因和MSTRG.15660、MSTRG.8694、MSTRG.1896等20个lncRNA,为进一步解析豹纹鳃棘鲈生长差异分化的分子机制提供了新思路。

关键词：豹纹鳃棘鲈生长差异分化 WGCNA 共表达网络

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Investigation on the Extraction Mechanism of Au (I) from Cyanide Solution with Quaternary Ammonium System

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Chinese Chemical Letters 2003年第4期14卷 397-400页

作者： Jian Zhun JIANG Wei Hong LI Wei jin ZHOU Hong Cheng gao jin Guang wu Guang Xian XU Department of Applied Chemistry College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871

The mechanism of Au (I) extraction has been characterized using 198Au radiometry, thermodynamic equilibrium, Karl-Fischer titration and FT-IR spectroscopy techniques. The results indicate that the extraction follows ionic combination and solvent interaction mechanism. The stoichiometry of the extracted species is 1:1:4:4 for TDMBA+: Au(CN)2- : TBP : H2O. The microstructure model of the extracted complex is a supramolecular structure via hydrogen bonding, ion dipole interaction and ionic combination. The extraction process can be described as micelles in the aqueous phase transfer into the organic phase and reversed micelles or microemulsion (W/O) form in the organic phase.

关键词： Solvent extraction Au(CN)_2^- FT-IR tetradecyldimethylbenzylammonium chloride (TDMBAC).

Vertically mounting molybdenum disulfide nanosheets on dimolybdenum carbide nanomeshes enables efficient hydrogen evolution

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Nano Research 2022年第5期15卷 3946-3951页

作者： Tingting Wang Pengyan Wang Yajun Pang Yitian wu jin Yang Hao Chen Xiaorui gao Shichun Mu Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China College of Chemistry and Materials Engineering Zhejiang A&F UniversityHangzhou 311300China Jiangsu Laboratory of Advanced Functional Materials School of Electronic and Information EngineeringChangshu Institute of TechnologyChangshu 215500China

Designing hierarchical heterostructure to optimize the adsorption of hydrogen intermediate(H*)is impressive for hydrogen evolution reaction(HER)***,we show that vertically mounting two-dimensional(2D)layered molybdenum disulfide(MoS_(2))nanosheets on 2D nonlayered dimolybdenum carbide(Mo_(2)C)nanomeshes to form a hierarchical heterostructure largely accelerates the HER kinetics in acidic electrolyte due to the weakening adsorption strength of H*on 2D Mo_(2)C *** hierarchical MoS2/Mo2C heterostructure therefore gives a decrease of overpotential for up to 500 mV at-10 mA·cm^(-2)and an almost 200-fold higher kinetics current density compared with the pristine Mo2C nanomeshes and maintains robust stability with a small drop of overpotential for only 16 mV upon 5,000 *** further rationalize this finding by theoretical calculations and find an optimized adsorption free energy of H*,identifying that the MoS_(2)featuring strong H*desorption plays a key role in weakening the strong binding of Mo_(2)C with H*and therefore improves the intrinsic HER activity on active C sites of Mo_(2)*** present finding shines the light on the rational design of heterostructured catalysts with synergistic geometry.

关键词： hydrogen evolution reaction transition metal carbide transition metal disulfide two-dimensional nonlayered/layered heterostructure hydrogen adsorption/desorption

A new sensitization strategy for achieving organic RTP in aqueous solution:tunable RTP and UC emission in supramolecular TTA-UC systems

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Science China Chemistry 2023年第12期66卷 3546-3554页

作者： Lingling Wei Fanrui gao Cheng He Qiuhui He Pengyue jin Yanqin Rong Ting Zhao Cheng Yang Wanhua wu Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistryState Key Laboratory of BiotherapySichuan UniversityChengdu 610064China

Achieving room temperature phosphorescence(RTP)of heavy-atom-free organic molecules with near-infrared(NIR)emission in solutions is fascinating for medical and biological applications but is highly ***,we report a new sensitization strategy to achieve RTP of heavy-atom-free fluorophores which served as energy acceptors in triplet-triplet annihilation upconversion(TTA-UC)by carefully designing the accommodated microenvironments through non-covalent interactions with a PAMAM dendrimer *** RTP of a serial of diphenyl anthracene(DPA)derivatives peaked at 766 nm were observed for the first time in an aqueous solution with a maximal quantum yield of 1.4%.A ternary supramolecular assembling between the UC components and the dendrimers was formed via electrostatic interaction between the–COOH and peripheral amino *** one hand,it assured the efficient population of the triplet states of the fluorophore via triplet-triplet energy transfer(TTET)process;on the other hand,it restricted the motions of the fluorophores,and thus inhibited the nonradiative inactivation of the populated triplet *** two aspects jointly contributed to the sensitized RTP of DPA ***,the microenvironment in which the annihilators resided could be regulated by adjusting the ratio of carboxyl to amino groups(–COOH/–NH_(2)),when–COOH/–NH_(2)1,the UC components could be partly driven to the hydrophobic cavities of the dendrimers,resulting an unprecedentedly simultaneous emission of upconverted fluorescence and down-converted phosphorescence of the annihilators.

关键词： room temperature phosphorescence sensitization supramolecular assembling dendrimer

Automatic differentiation based discrete adjoint method for aerodynamic design optimization on unstructured meshes

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Chinese Journal of Aeronautics 2017年第2期30卷 611-627页

作者： Yisheng gao Yizhao wu Jian Xia College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

A systematic methodology for formulating,implementing,solving and verifying discrete adjoint of the compressible Reynolds-averaged Navier-Stokes（RANS） equations for aerodynamic design optimization on unstructured meshes is ***,a general adjoint formulation is constructed for the entire optimization problem,including parameterization,mesh deformation,flow solution and computation of the objective function,which is followed by detailed formulations of matrix-vector products arising in the adjoint *** to this formulation,procedural components of implementing the required matrix-vector products are generated by means of automatic differentiation（AD） in a structured and modular ***,a duality-preserving iterative algorithm is employed to solve flow adjoint equations arising in the adjoint model,ensuring identical convergence rates for the tangent and the adjoint models.A three-step strategy is adopted to verify the adjoint *** proposed method has several remarkable features：the use of AD techniques avoids tedious and error-prone manual derivation and programming;duality is strictly preserved so that consistent and highly accurate discrete sensitivities can be obtained;and comparable efficiency to hand-coded implementation can be *** the current discrete adjoint method,a gradient-based optimization framework has been developed and applied to a drag reduction problem.

关键词： Automatic differentiation(AD) Discrete adjoint Navier-Stokes equations Optimization Unstructured meshes