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Identification of Linear Systems Using Binary Sensors with Random Thresholds

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Journal of Systems Science & Complexity 2024年第3期37卷 907-923页

作者： huang Zhiyong SONG Qijiang School of Mathematics Renmin University of ChinaBeijing 100872China School of Mathematics Sino-French InstituteRenmin University of ChinaBeijing 100872China

In this paper,the problem of identifying autoregressive-moving-average systems under random threshold binary-valued output measurements is *** the help of stochastic approximation algorithms with expanding truncations,the authors give the recursive estimates for the parameters of both the linear system and the binary *** reasonable conditions,all constructed estimates are proved to be convergent to the true values with probability one,and the convergence rates are also established.A simulation example is provided to justify the theoretical results.

关键词： α-mixing binary sensor quantized system stochastic approximation stochastic thresh-old strongly consistent system identification

Oxygen-assisted zinc recovery from electric arc furnace dust using magnesium chloride

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2300-2311页

作者： Jingdong huang Xiao Yang School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China School of Engineering Westlake UniversityHangzhou 310030China

Electric arc furnace(EAF)dust is an important secondary resource containing metals,such as zinc(Zn)and iron(Fe).Recover-ing Zn from EAF dust can contribute to resource recycling and reduce environmental ***,the high chemical stability of ZnFe_(2)O_(4)in EAF dust poses challenges to Zn *** address this issue,a facile approach that involves oxygen-assisted chlorination using molten MgCl_(2)is *** work focused on elucidating the role of O2 in the reaction between ZnFe_(2)O_(4)and molten MgCl_(2).The results demonstrate that MgCl_(2)effectively broke down the ZnFe_(2)O_(4)structure,and the high O2 atmosphere considerably promoted the sep-aration of Zn from other components in the form of ZnCl_(2).The presence of O2 facilitated the formation of MgFe_(2)O_(4),which stabilized Fe and prevented its ***,the excessive use of MgCl_(2)resulted in increased evaporation loss,and high temperatures pro-moted the rapid separation of *** on these findings,we successfully extracted ZnCl_(2)-enriched volatiles from practical EAF dust through oxygen-assisted *** optimized conditions,this method achieved exceptional Zn chlorination percentage of over 97%within a short period,while Fe chlorination remained below 1%.The resulting volatiles contained 85wt%of ZnCl_(2),which can be further processed to produce metallic *** findings offer guidance for the selective recovery of valuable metals,particularly from solid wastes such as EAF dust.

关键词： electric arc furnace dust zinc oxygen magnesium chloride chlorination

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10kv配电线路的故障查找与处理

电源技术应用 2016年第8期19卷 60-62页

作者：黄梓毅广州番电电力建设集团有限公司广东广州511400

介绍了10kV 配电线路的故障类型,讨论了故障查找的5种方法,最后介绍了对机关类型故障的处理方法.

关键词：配电线路故障故障处理

有为政府、风险应对与农业区域公用品牌发展——基于赣南脐橙产业的案例研究

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宏观质量研究 2022年第6期10卷 70-83页

作者：罗连发黄紫仪苏智鸿武汉大学质量发展战略研究院

欠发达地区发展产业的过程中,要将资源禀赋优势转化为现实的竞争优势面临着多重风险挑战。本文以赣南脐橙区域公用品牌发展为案例,结合有为政府及政府市场互动理论,分析了政府应对产业成长过程中各类风险的动态过程和一般经验。研究认为... 详细信息

欠发达地区发展产业的过程中,要将资源禀赋优势转化为现实的竞争优势面临着多重风险挑战。本文以赣南脐橙区域公用品牌发展为案例,结合有为政府及政府市场互动理论,分析了政府应对产业成长过程中各类风险的动态过程和一般经验。研究认为,政府在识别产业的潜在比较优势之后,还需要不断面对产业起步成本高、规模化发展动能不足、高质量发展转型困难等各种风险挑战。要应对这些挑战,需要进行持续稳定的政策支持、持续的经验积累及对基层政府有效的激励机制设计。本文对于农业区域公用品牌发展的政策启示在于:第一,加强对特色农业产业持续性政策投入的顶层设计以消除产业发展方向不确定性风险;第二,区域内部要建构竞争与合作双重关系以防范低质化发展风险;第三,政策经验的持续积累以应对产业发展的各类不确定性风险。

关键词：有为政府区域公用品牌乡村振兴赣南脐橙

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Microstructure and Internal Friction Behavior of Laser 3D Printed Fe-Based Amorphous Composites

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 196-204页

作者： Shuilong huang Qingjun Chen Li Ji Kan Wang Guosheng huang School of Material Science and Engineering Nanchang Hangkong UniversityNanchang330063China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research Institute(LSMRI)Qingdao266237China

Laser 3D printing,also known as laser additive manufacturing(LAM),is favored for its ability to form bulk metallic glass(BMG)and its composite materials(BMGcs)with freeform *** this work,two different kinds of Fe_(41)Co_(7)Cr_(15)Mo_(14)C_(15)B_(6)Y_(2)amorphous coatings(A and B)were prepared by using LAM technology under air-and water-cooled conditions,respectively;meanwhile,to reduce the cracks generated due to the residual thermal stresses,coating C obtained by air-sweep annealing of B with a low energy-density *** morphology and amorphous content and microstructure of the coatings were investigated,the results show many cracks in coating B deposited under water-cooled conditions,and its microstructure shows an amorphous-crystal-nanocrystalline mixed *** was suppressed in coating C,obtained by air-sweep annealing based on coating B,but the amorphous content was reduced from 32.6 to 13.4%.And the hardness and corrosion resistance of the coating will increase with the increase in the amorphous ***,the internal friction behavior of a BMGcs was prepared on the basis of the process of sample C is compared with that of as-cast amorphous *** results show that the low temperature internal friction behavior of BMGcs is affected by the defects produced during printing,and the high temperature internal friction behavior is affected by the precipitated hard phase.

关键词： Laser 3D printing Amorphous coating Microstructure Corrosion resistance Internal friction behavior

同性恋作家笔下的女性形象对比分析——以《姨妈的故事》与《孤恋花》为例

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文化创新比较研究 2020年第21期4卷 92-94页

作者：黄子懿上海外国语大学海外合作学院

帕特里克·怀特(Patrick White)的《姨妈的故事》(the Aunt’s Story)和白先勇的《孤恋花》都以女性作为故事的主角,并且两者均以悲剧告终。由于两位作者都具有同性恋身份,在构建女性角色时即有各自的特色又不缺乏相同之处。尤其是他们... 详细信息

帕特里克·怀特(Patrick White)的《姨妈的故事》(the Aunt’s Story)和白先勇的《孤恋花》都以女性作为故事的主角,并且两者均以悲剧告终。由于两位作者都具有同性恋身份,在构建女性角色时即有各自的特色又不缺乏相同之处。尤其是他们笔下属于社会边缘的女性,更令人深思。

关键词：帕特里克·怀特白先勇女性形象同性恋

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论现代排球运动科学的发展

福建体育科技 2001年第2期20卷 30-33页

作者：黄子宜福建师范大学体育系福建福州350007

排球运动作为体育运动的重要的组成部分 ,经过不断地发展 ,已拥有自身独立的科学体系。本文结合九十年代以来排球运动、排球学科、排球科研三个方面的情况对排球运动科学进行阐述。

关键词：排球运动排球运动科学发展

基于“以赛促教”的中职服装设计与工艺专业改革探析

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皮革制作与环保科技 2022年第17期3卷 31-33页

作者：黄子懿阳春市中等职业技术学校广东阳江529600

一直以来,职业院校都非常重视对学生的职业技能培养。为了进一步提高学生素质,帮助其规划职业发展,越来越多的中职学校开始发展赛教融合,实现以赛促教,从而促进专业教学,这对于提升中职教育水平具有重要作用。而在中职服装设计与工艺专... 详细信息

一直以来,职业院校都非常重视对学生的职业技能培养。为了进一步提高学生素质,帮助其规划职业发展,越来越多的中职学校开始发展赛教融合,实现以赛促教,从而促进专业教学,这对于提升中职教育水平具有重要作用。而在中职服装设计与工艺专业教学当中,教师也有必要基于以赛促教的理念,实现专业教学创新改革,把学生的比赛积极性充分调动起来,协调好教学和比赛的时间,培养更多应用型服装专业人才。本文首先分析了以赛促教对于中职院校服装设计与工艺专业教学创新的积极影响,其次明确了中职服装设计与工艺专业教学当中存在的问题,最后探究了具体的解决措施,以期提升改革效果,为中职学生职业发展提供更多有利的条件。

关键词：以赛促教中职服装设计与工艺专业

Revisiting the Mg isotopic systematics of siliciclastic components of sediments and sedimentary rocks:A new geochemical proxy of continental weathering in Earth's history

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Science China Earth Sciences 2024年第2期67卷 620-633页

作者： Tianzheng huang Bing SHEN Kangjun huang Meng NING Chao LI Jinzhuang XUE Yuanlin SUN Baoqi huang Key Laboratory of Orogenic Belt and Crustal Evolution MOESchool of Earth and Space SciencesPeking UniversityBeijing100871China State Key Laboratory of Continental Dynamics Shaanxi Key Laboratory of Early Life and EnvironmentsDepartment of GeologyNorthwest UniversityXi’an710069China Institute of Sedimentary Geology Chengdu University of TechnologyChengdu610059China Key Laboratory of Rhenium-Osmium Isotopic Geochemistry Chinese Academy of Geological SciencesBeijing100037China

The Mg isotopic compositions of siliciclastic components(δ^(26)Mg_(sili))of sediments and sedimentary rocks have been commonly used to constrain the intensity of continental weathering,based on observations of,(1)an upward enrichment of26Mg in modern weathering profiles,(2)preferential uptake of26Mg in soil clays,and(3)general positive correlations between weathering intensities andδ^(26)Mg_(sili)***,not all weathering profiles display an upward increase ofδ^(26)Mg_(sili),and not all soil clays enrich in26Mg,complicating the interpretations ofδ^(26)Mg_(sili)data of sediments and sedimentary *** further explore the controls ofδ^(26)Mg_(sili)of sediments and sedimentary rocks,here we measuredδ^(26)Mg_(sili),mineralogical compositions and major element compositions of deep sea sediments from South China Sea(SCS)and carbonate rock samples from two late Paleozoic sections in South *** samples show decreasing trends of both normalized Mg concentration(Mgnorm)andδ^(26)Mg_(sili)values with the increase of weathering intensity,while SCS sediments samples do not show any correlation between Mgnormorδ^(26)Mg_(sili)values and weathering intensity.A three-stages weathering model is developed to explain the observed Mgnorm andδ^(26)Mg_(sili)*** the new model,weathering can be divided into three stages,(1)the preliminary weathering stage characterized by dissolution of primary minerals and formation of secondary clay minerals in saprolite,(2)the transitional stage with massive vermiculite and chlorite formation on the bottom of soil,and(3)the advanced stage showing dissolution of vermiculite and chlorite in the top of *** new model explains anδ^(26)Mg_(sili)increase and Mgnormdecrease with an increase weathering intensity in preliminary weathering stage and decrease of Mgnormandδ^(26)Mg_(sili)with increase weathering intensity in advanced weathering *** revised weathering model warrants the application of Mg isotope in the study of contin

关键词： Clay mineral Chemical weathering CIA Soil Weathering model