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Fuzzy Shape Control Based on El man Dynamic Recursion Network Prediction Model

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Journal of Iron and Steel Research International 2006年第1期13卷 31-35页

作者： jia Chun-yu liu Hong-min College of Mechanical Engineering Yanshan University Qinhuangdao 066004 Hebei China

In the strip rolling process, shape control system possesses the characteristics of nonlinearity, strong coupling, time delay and time variation. Based on self adapting Elman dynamic recursion network prediction model, the fuzzy control method was used to control the shape on four-high cold mill. The simulation results showed that the system can be applied to real time on line control of the shape.

关键词： shape prediction shape control Elman dynamic recursion network parameter self-adjusting fuzzy control

Microstructure Characterization and Mechanical Properties of FGH 95 Turbine Blade Retainers

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Journal of Iron and Steel Research International 2010年第9期17卷 73-78页

作者： TAO yu jia jian liu jian-tao Central Iron and Steel Research Institute Beijing 100081 China

FGH 95 is a powder metallurgy （P/M） processed superalloy, which was developed in the 1980s in China. One of the applications of FGH 95 was high pressure turbine blade retainers. The manufacturing processes used to produce FGH 95 blade retainers consisted of atomization by plasma rotating electrode process （PREP）, hot isostatic pressing （HIP） at super-solvus temperature and a sub-solvus solution heat treatment. The material had an equiaxed grain structure （ASTM 6.5-7.5）. The γ precipitates in as-HIP FGH 95 showed a tri-model distribution. Carbides in the alloy were MC type and precipitated at grain boundaries. The prior particle boundaries （PPB） in the material originated mainly from γ＇ phase. Statistics of the mechanical properties data from batch production of the FGH 95 blade retainers were investigated. The as-HIP FGH 95 blade retainers showed high strength at room temperature and 650 ℃, excellent creep resistance and outstanding stress rupture strength at 650 ℃.

关键词： FGH95 as-HiP P/M superalloy blade retainer microstructure mechanical property

Clause-level Relationship-aware Math Word Problems Solver

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Machine Intelligence Research 2022年第5期19卷 425-438页

作者： Chang-Yang Wu Xin Lin Zhen-Ya Huang yu Yin jia-yu liu Qi liu Gang Zhou Anhui Province Key Laboratory of Big Data Analysis and Application School of Data ScienceUniversity of Science and Technology of ChinaHefei 230026China Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefei 230088China Laboratory of Mathematical Engineering and Advanced Computing Information Engineering UniversityZhengzhou 450001China

Automatically solving math word problems,which involves comprehension,cognition,and reasoning,is a crucial issue in artificial intelligence *** math word problem solvers mainly work on word-level relationship extraction and the generation of expression solutions while lacking consideration of the clause-level *** this end,inspired by the theory of two levels of process in comprehension,we propose a novel clause-level relationship-aware math solver(CLRSolver)to mimic the process of human comprehension from lower level to higher ***,in the lower-level processes,we split problems into clauses according to their natural division and learn their *** the higher-level processes,following human′s multi-view understanding of clause-level relationships,we first apply a CNN-based module to learn the dependency relationships between clauses from word relevance in a local ***,we propose two novel relationship-aware mechanisms to learn dependency relationships from the clause semantics in a global ***,we enhance the representation of clauses based on the learned clause-level dependency *** expression generation,we develop a tree-based decoder to generate the mathematical *** conduct extensive experiments on two datasets,where the results demonstrate the superiority of our framework.

关键词： Artificial intelligence(AI) artificial neural network(ANN) computational mathematics machine intelligence machine learning

Experimental study on anti-penetration mechanism of bolted composite protective structure with limited span under impact of low-velocity projectile

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Defence Technology（防务技术） 2022年第6期18卷 995-1005页

作者： yu-jia liu Dian Li Hai-liang Hou Zhu-jie Zhao yue Xie College of Naval Architecture and Ocean Engineering Naval University of EngineeringWuhan430033China

In order to study the influence of the bolt joint mode on low-velocity projectiles penetrating the composite protective structure,two bolt joint models which connect the composite target to the fixed frame were designed,the ballistic test of the bolted composite protective structure with limited span was carried out,and the bearing and failure characteristics of the bolted region,as well as the energy dissipation of each part of the structure,were *** results show that in the condition of lowvelocity impact,there are three failure modes for the bolted composite protective structure subjected to projectile penetration,including failure of the impact point of the composite target,failure of protective structure connecting components and failure of the holes in the bolted region of the composite target;the failure mode of bolt holes in the bolted region has a great influence on the protection performance,and the allowable value of the bearing capacity of the bolted region depends on the sum of the minimum failure load in the failure modes and the friction force;shear-out failure occurring in the bolt holes in the bolted region exerts the greatest effect on ballistic performance,which should be avoided;When simultaneous failure occurs in the bolted region and the free deformation region of the composite protective structure,the energy absorption per unit surface density of the composite protective structure reaches the maximum,which can give full play to its anti-penetration efficiency.

关键词： Impact dynamics Composite protective structure Bolt joint Ballistic test Failure modes

Integrating Method Based on KICA and LSSVM for Steel Temperature Prediction of Heating Furnace

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Integrating Method Based on KICA and LSSVM for Steel Tempera...

Expression of the SET protein in testes of mice at different developmental stages

第25届中国控制与决策会议

作者： Liang yu Zhi-zhong Mao yu-jia liu School of Information Science & Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries

ISBN: (纸本)9781467355339

The purpose of this paper is to develop an intelligent algorithm by integrating the Kernel Independent Component Analysis （KICA） and the Support Vector Machines （SVM） for forecasting the steel temperature. Characterized by nonlinearity, multivariable, coupling of the heating furnace, it is necessary to feature extraction. Thus, this study proposes the application of KICA to extract the hidden information of process before conducting LSSVM. An application study is carried out on the real production data acquired from a steel-making plant. Results demonstrate that the proposed method possesses superior accuracy when compared to conventional methods, including SVM, KICA-SVM and KICA-LSSVM.

关键词： kernel independent component analysis (KICA) last squares support vector machines (LSSVM) steel temperature prediction

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Asian Journal of Andrology 2014年第5期16卷 689-693,I0006,I0007页

作者： Xiao-Nan Dai Shan liu Li Shao Chao Gao Li Gao jia-Yin liu yu-Gui Cui State Key Laboratory of Reproductive Medicine Clinical Center of Reproductive Medicine First Affiliated Hospital Nanjing Medical University Nanjing China

SET is a multifunctional protein involved in regulating many biological processes of the cell cycle. It is also a regulator of steroidogenesis in the ovary. However, the expression of SET protein in testis, and its function, still remains ambiguous. In this study, we observed the expression of SET in the testes of mice at different developmental stages, and have discussed its potential function in regulating spermatogenesis and androgen production. Forty-eight male mice at different developmental stages （1 week old as the infancy group; 4 weeks old as the prepubertal group; 12 weeks old as the adult group; over 12 months old as the ageing group） were used. Cellular location of SET protein in the testes was observed by immuno-histochemistry. Expression levels of Set mRNA and SET protein were analyzed by quantitative polymerase chain reaction and Western blotting. SET protein was expressed in spermatogonial cells and spermatocytes; the highest level was mainly in haploid and tetraploid cells of the prepubertal and adult groups, and Leydig cells of the adult and ageing groups. There was a low expression in Sertoli cells. Expression of Set mRNA in the prepubertal group was significantly higher than that in the adult group （P 〈 0.05）, while expression of SET protein was at the highest level in the adult group （P 〈 0.05）. SET protein is mainly expressed in spermatogonial cells and spermatocytes, and poorly expressed in Sertoli cells, suggesting that it is involved in spermatogenesis. Expression of SET protein in Leydig cells suggests a possible role in steroidogenesis.

关键词： androgen production Leydig cell Sertoli cell SET spermatogenesis

Tritium concentrations in precipitation in Shanghai

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Nuclear Science and Techniques 2018年第5期29卷 19-24页

作者： Ke Deng Ling Wang Zheng-Hai Xia yu-Hua Ma Lai-Lai Qin Qin Zhang jia-yu liu jian Yao Wei liu Shanghai Institute of Applied Physics Chinese Academy of ScienceJiading campusShanghai 201800China University of Chinese Academy of Science Beijing 100049China Shanghai Tech University Shanghai 201210China CNCC Nuclear Power Operations Management Co Ltd Haiyan 314300China

Tritium concentrations in precipitation can be used as a criterion to evaluate the tritium baseline of the environment. The tritium concentration in precipitation in Shanghai during 2014-2015 was determined. Values ranged from 0.68 ± 0.04 to 4.11 ± 0.39 Bq/L, and it showed a decreasing trend compared with historical data; however,the values were slightly higher than the natural background tritium level. Additionally, the tritium concentration shows a seasonal variation: It was higher in autumn and winter and lower in summer and spring. A comparison of concentrations in precipitation in Shanghai and around the Qinshan Nuclear Power Plant reveals no correlation,implying that the nuclear power plant operations may not affect the environment of Shanghai. Thus, the raised tritium concentrations in Shanghai might be due to the effects of monsoons, spring leak, raindrop, or other activities that generate tritium there. Those activities may include chemistry research that uses tritium as a tracer.

关键词： Tritium Precipitation Seasonality Origin

Protective effects of gastrodine on dendritic spines in kainic acid-injured neurons

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Neural Regeneration Research 2011年第36期6卷 2810-2814页

作者： Yangfei Ji Boai Zhang Yanjie jia Guifang Sun yu liu Tao Peng Yanru liu Xingrong Ma Department of Neurology First Affifiated Hospital Zhengzhou University Zhengzhou 450052 Henan Province China

EphB2 affects neuronal cells by altering the dendritic spines. The present study analyzed the neu-roprotective effects of gastrodine by measuring EphB2 expression in rat neural cells cultured in vitro and injured by kainic acid. Gastrodine （12.5, 25, and 50 mg/L） improved morphology in kainic acid-injured neurons, reduced lactate dehydrogenase leakage, decreased neuronal apoptosis, and increased EphB2 expression in neuronal cells. A moderate dose of 25 mg/L gastrodine resulted in the most significant effects. These results suggested that gastrodine suppressed the neurotoxic effects of excitatory amino acids and provided neuroprotection by remodeling neuronal dendritic spines.

关键词： gastrodine kainic acid cell culture EphB2 neuron neuroprotection

Hotspots and frontiers of the relationship between gastric cancer and depression:A bibliometric study

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World Journal of Gastroenterology 2023年第46期29卷 6076-6088页

作者： jia-yu liu Ji-Qi Zheng Cheng-Liang Yin Wen-Pei Tang jian-Ning Zhang Department of Neurosurgery The First Medical CentreChinese PLA General HospitalBeijing 100853China School of Health Humanities Peking UniversityBeijing 100191China Medical Big Data Research Center Medical Innovation Research Division of Chinese PLA General HospitalBeijing 100853China National Engineering Research Center for Medical Big Data Application Technology Chinese PLA General HospitalBeijing 100853China

BACKGROUND A significant relationship between gastric cancer(GC)and depression has been found in the last 20 ***,there is no comprehensive information that helps researchers find popular and potential research directions on GC and *** To determine the research status and hotspots by bibliometric analysis of relevant publications on the relationship between GC and *** We used the Web of Science Core Collection to search and collate the literature on GC and depression from 2000 to 2022 on 31 May,***,visualization analysis was performed using VOSviewer software(version 1.6.19)and the Bibliometrix package in R *** We retrieved 153 pertinent publications from 2000 to *** annual publication count showed an overall upward *** had the most prominent publications and significant contributions to this field(n=64,41.83%).Before 2020,most studies focused on“the effect of GC on the development and progression of depression in patients.”The latest research trends indicate that“the effect of depression on the occurrence and development of GC and its mechanism”will receive more attention in the *** The study of“the effect of depression on the occurrence and development of GC and its mechanism”has emerged as a novel research theme over the past two years,which may become a research hotspot in this *** study provides new insights into the hotpots and frontiers of the relationship between GC and depression,potentially guiding researchers toward hot research topics in the future.

关键词： Gastric cancer Depression Bibliometric analysis Visualization Web of Science