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Quantum Fuzzy Regression Model for Uncertain Environment

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Computers, Materials & Continua 2023年第5期75卷 2759-2773页

作者： Tiansu Chen shi bin Zhang Qirun Wang Yan Chang School of Cybersecurity Chengdu University of Information TechnologyChengdu610225China Advanced Cryptography and System Security Key Laboratory of Sichuan Province Chengdu610255China School of Engineering and Technology University of HertfordshireHertfordUK

In the era of big data,traditional regression models cannot deal with uncertain big data efficiently and *** order to make up for this deficiency,this paper proposes a quantum fuzzy regression model,which uses fuzzy theory to describe the uncertainty in big data sets and uses quantum computing to exponentially improve the efficiency of data set preprocessing and parameter *** this paper,data envelopment analysis(DEA)is used to calculate the degree of importance of each data ***,Harrow,Hassidim and Lloyd(HHL)algorithm and quantum swap circuits are used to improve the efficiency of high-dimensional data matrix *** application of the quantum fuzzy regression model to smallscale financial data proves that its accuracy is greatly improved compared with the quantum regression ***,due to the introduction of quantum computing,the speed of dealing with high-dimensional data matrix has an exponential improvement compared with the fuzzy regression *** quantum fuzzy regression model proposed in this paper combines the advantages of fuzzy theory and quantum computing which can efficiently calculate high-dimensional data matrix and complete parameter estimation using quantum computing while retaining the uncertainty in big ***,it is a new model for efficient and accurate big data processing in uncertain environments.

关键词： Big data fuzzy regression model uncertain environment quantum regression model

Effect of electroslag remelting on carbides in 8Cr13MoV martensitic stainless steel

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International Journal of Minerals,Metallurgy and Materials 2015年第11期22卷 1149-1156页

作者： Qin-tian Zhu Jing Li Cheng-bin shi Wen-tao Yu State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

The effect of electroslag remelting（ESR） on carbides in 8Cr13MoV martensitic stainless steel was experimentally studied. Phases precipitated from liquid steel during solidification were calculated using the Thermo-Calc software. The carbon segregation was analyzed by original position analysis（OPA）, and the carbides were analyzed by optical microscopy（OM）, scanning electron microscopy（SEM）, energy-dispersive X-ray spectroscopy（EDS） and X-ray diffraction（XRD）. The results indicated that more uniform carbon distribution and less segregation were obtained in the case of samples subjected to the ESR process. After ESR, the amount of netty carbides decreased significantly, and the chromium and vanadium contents in the grain-boundary carbides was reduced. The total area and average size of carbides were obviously smaller after the ESR process. In the sample subjected to ESR, the morphology of carbides changed from lamellar and angular to globular or lump, whereas the types of carbides did not change; both M23C6 and M7C3 were present before and after the ESR process.

关键词： martensitic stainless steel electroslag remelting carbides

Enrichment of copper and recycling of cyanide from copper–cyanide waste by solvent extraction

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International Journal of Minerals,Metallurgy and Materials 2016年第11期23卷 1258-1263页

作者： Teng-yue Gao Kui-ren Liu Qing Han bin-shi Xu Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of the Ministry of Education School of MetallurgyNortheastern University National Key laboratory for Remanufacturing Academy of Armored Forces Engineering

The enrichment of copper from copper–cyanide wastewater by solvent extraction was investigated using a quaternary ammonium salt as an extractant. The influences of important parameters, e.g., organic-phase components, aqueous pH values, temperature, inorganic anion impurities, CN/Cu molar ratio, and stripping reagents, were examined systematically, and the optimal conditions were determined. The results indicated that copper was effectively concentrated from low-concentration solutions using Aliquat 336 and that the extraction efficiency increased linearly with increasing temperature. The aqueous pH value and concentrations of inorganic anion impurities only weakly affected the extraction process when varied in appropriate ranges. The CN/Cu molar ratio affected the extraction efficiency by changing the distribution of copper–cyanide complexes. The difference in gold leaching efficiency between using raffinate and fresh water was negligible.

关键词： copper cyanide wastewater treatment solvent extraction copper recovery

Fluoride evaporation and crystallization behavior of CaF_2–CaO–Al_2O_3–(TiO_2) slag for electroslag remelting of Ti-containing steels

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International Journal of Minerals,Metallurgy and Materials 2016年第6期23卷 627-636页

作者： Cheng-bin shi Jung-wook Cho Ding-li Zheng Jing Li State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Graduate Institute of Ferrous Technology Pohang University of Science and Technology

To elucidate the behavior of slag films in an electroslag remelting process, the fluoride evaporation and crystallization of CaF2–CaO–Al2O3–（TiO2） slags were studied using the single hot thermocouple technique. The crystallization mechanism of TiO2-bearing slag was identified based on kinetic analysis. The fluoride evaporation and incubation time of crystallization in TiO2-free slag are found to considerably decrease with decreasing isothermal temperature down to 1503 K. Fish-bone and flower-like CaO crystals precipitate in TiO2-free slag melt, which is accompanied by CaF2 evaporation from slag melt above 1503 K. Below 1503 K, only near-spherical CaF2 crystals form with an incubation time of less than 1 s, and the crystallization is completed within 1 s. The addition of 8.1wt% TiO2 largely prevents the fluoride evaporation from slag melt and promotes the slag crystallization. TiO2 addition leads to the precipitation of needle-like perovskite（CaTiO3） crystals instead of CaO crystals in the slag. The crystallization of perovskite（CaTiO3） occurs by bulk nucleation and diffusion-controlled one-dimensional growth.

关键词： electroslag remelting slag crystallization crystallization kinetics fluorides evaporation

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植物-微生物联合修复化学退化土壤研究进展

土壤通报 2024年第1期55卷 288-300页

作者：向春雨罗栋源郭莉杜军艳刘世宾蒲生彦成都理工大学生态环境学院四川成都610059 广西壮族自治区环境保护科学研究院土壤环境研究中心广西南宁530022 地质灾害防治与地质环境保护国家重点实验室四川成都610059

土壤化学退化问题严重威胁了人类生存的基础环境,已成为当前面临的严重的全球性问题之一。为增加粮食产量、减缓生物多样性下降速度以及遏制气候变化,逆转全球土壤化学退化趋势势在必行。生物修复是一种环境友好且经济有效的修复策略,... 详细信息

土壤化学退化问题严重威胁了人类生存的基础环境,已成为当前面临的严重的全球性问题之一。为增加粮食产量、减缓生物多样性下降速度以及遏制气候变化,逆转全球土壤化学退化趋势势在必行。生物修复是一种环境友好且经济有效的修复策略,逐渐成为改良与修复化学退化土壤的重要方法。特别是植物-微生物联合修复能够弥补单一修复方法的不足,显著提高化学退化土壤的修复效率,具有广阔的应用前景。但该联合修复技术针对不同化学退化类型土壤的治理效果、机理及影响因素等各有侧重。本文回顾了土壤营养元素亏缺、盐渍化、污染三种主要化学退化类型的成因、分布和危害,论述了植物-微生物联合修复在这三种化学退化类型治理方面的效果、内在机理和影响因素。针对土壤营养元素亏缺,微生物通过释放分泌物刺激植物根系等方式与植物有机结合,增强固氮、解磷等作用,提高对土壤养分的高效利用,并增加土壤肥力;而盐渍化土壤中添加能够适应极端环境的耐盐碱微生物可通过改善土壤结构、提高营养元素可利用度等,促进植物生长、改良盐渍化土壤;向污染土壤中接种微生物后通过优化植物根际环境、减少有毒污染物对植物的侵害,形成互利共生关系,加强对污染物的降解。综上所述,植物-微生物联合修复技术在化学退化土壤修复方面已取得了大量研究成果,为实现退化土壤的绿色、高效、可持续修复提供了重要理论参考。

关键词：土壤化学退化植物-微生物联合修复修复机理

Corrosion monitoring system design for coating wire of steel in ocean

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中国有色金属学会会刊：英文版 2004年第z1期14卷 420-424页

作者： WEI shi-cheng XU bin-shi WANG Hai-dou CHEN Jian-she WEI Xu-jun National Key Laboratory for Remanufacturing ArmoredEngineering Institute Beijing 100072 China National Key Laboratory for Remanufacturing ArmoredEngineering Institute Beijing 100072 China National Key Laboratory for Remanufacturing ArmoredEngineering Institute Beijing 100072 China School of Materials Science and Engineer Northeastern University Shenyang 110004 China School of Materials Science and Engineer Northeastern University Shenyang 110004 China

The monitoring system design used in anti-corrosion of coating wire of steel in ocean were concerned. A corrosion monitoring system adapting to corrosion observation of coating wire of steel was introduced in details, including design and choice of software and hardware. This system will play an important role in the collection, procession, demonstration, deposition and accident alarm of corrosion data of oceanic coating wire of steel.

关键词： ocean coating wire of steel corrosion monitor

Experimental study on uplift mechanism of pipeline buried in sand using high-resolution fiber optic strain sensing nerves

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第4期14卷 1304-1318页

作者： Haojie Li Honghu Zhu Yuanhai Li Chunxin Zhang bin shi School of Earth Sciences and Engineering Nanjing UniversityNanjing210023China Institute of Earth Exploration and Sensing Nanjing UniversityNanjing210023China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyXuzhou221116China

Reliable assessment of uplift capacity of buried pipelines against upheaval buckling requires a valid failure mechanism and a reliable real-time monitoring *** paper presents a sensing solution for evaluating uplift capacity of pipelines buried in sand using fiber optic strain sensing(FOSS)*** pipe-soil interaction(PSI)was investigated through a series of scaled tests,in which the FOSS and image analysis techniques were used to capture the failure *** published prediction models were evaluated and modified according to observations in the present study as well as a database of 41 pipe loading tests assembled from the *** strain measurements of FOSS nerves horizontally installed above the pipeline were correlated with the failure behavior of the overlying *** test results indicate that the previous analytical models could be further improved regarding their estimations in the failure geometry and mobilization distance at the peak uplift *** typical slip plane failure forms,inclined shear bands star from the pipe shoulder,instead of the springline,and have not yet reached the ground surface at the peak *** vertical inclination of curved shear bands decreases with increasing uplift displacements at the post-peak *** large displacements,the upward movement is confined to the deeper ground,and the slip plane failure progressively changes to the *** feasibility of FOSS in pipe uplift resistance prediction was validated through the comparison with image *** addition,the shear band locations can be identified using fiber optic strain ***,the advantages and limits of the FOSS system are discussed in terms of different levels in upward PSI assessment,including failure identification,location,and quantification.

关键词： Pipe-soil interaction(PSI) Upheaval buckling Distributed strain sensing Image analysis Uplift resistance prediction Interfacial behavior

Metadynamic recrystallization behaviors of SA508Gr.4N reactor pressure vessel steel during hot compressive deformation

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Journal of Iron and Steel Research International 2021年第1期28卷 46-57页

作者： shi-bin Qiao Zheng-dong Liu Xi-kou He Chang-sheng Xie Institute for Special Steels Central Iron and Steel Research InstituteBeijing 100081China Collaborative Innovation Centre of Steel Technology University of Science and Technology BeijingBeijing 100083China

The metadynamic recrystallization(MDRX)model is established,and the coefficients determined by multiple linear regression analysis are used to describe the microstructure evolution of SA508Gr.4N *** effects of compression temperature of 950–1150℃,strain rate of 0.001–0.1 s^(-1),pre-strain of 0.3–0.6,initial austenite grain size(IAGS)of 136–552 lm,and interval time of 1–300 s on the MDRX kinetics and microstructure evolution were analyzed,using twopass compression test method on Gleeble thermo-mechanical *** results show that MDRX kinetics and austenite grain size are strongly dependent on compression temperature and strain rate,MDRX volume fraction increases with increasing compression temperature and strain rate,and the grain size decreases with increasing strain rate and decreasing compression temperature,while less affected by the pre-strain and ***,the values predicted using MDRX model and the ones calculated from experiment are compared,and the results show that the proposed model can give a reasonable estimate of MDRX behavior for SA508Gr.4N steel.

关键词： SA508Gr.4N steel Metadynamic recrystallization Kinetic model Grain size model

广西喀斯特峰丛洼地造林对土壤有机碳、氮及其组分的影响

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农业现代化研究 2024年第2期45卷 316-325页

作者：周业恒肖孔操夏世斌何寻阳李德军武汉理工大学资源与环境工程学院湖北武汉430070 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室湖南长沙410125 中国科学院环江喀斯特生态系统观测研究站广西环江547100

植树造林是促进退化喀斯特生态系统植被恢复同时提升生态碳汇的重要措施。目前,关于喀斯特峰丛洼地区造林对土壤碳氮组分及其生物化学稳定性的影响认识还很不足。本研究在广西喀斯特峰丛洼地区配对采集了玉米地及其邻近人工林表层(0~15 ... 详细信息

植树造林是促进退化喀斯特生态系统植被恢复同时提升生态碳汇的重要措施。目前,关于喀斯特峰丛洼地区造林对土壤碳氮组分及其生物化学稳定性的影响认识还很不足。本研究在广西喀斯特峰丛洼地区配对采集了玉米地及其邻近人工林表层(0~15 cm)和亚表层(30~45 cm)土壤样品各14组,采用酸水解法对土壤碳、氮组分(活性碳、氮组分I,活性碳、氮组分II和惰性碳、氮组分)进行了测定。研究表明,农田退耕造林20年后,表层和亚表层土壤总有机碳、全氮、活性碳组分、惰性碳组分、活性氮组分与惰性氮组分含量均有不同程度的增加。与农田相比,人工林土壤碳库活度(活性碳库/惰性碳库)整体降低,碳库稳定性(惰性碳占土壤总有机碳的比例)显著提高。逐步回归分析表明,根系生物量、碳酸钙和交换性钙离子是造林后土壤有机碳、氮及其组分含量增加的主控因子。

关键词：造林土壤有机碳组分稳定性喀斯特峰丛洼地