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Mathematical Modeling and a Multiswarm Collaborative Optimization Algorithm for Fuzzy Integrated Process Planning and Scheduling Problem

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Tsinghua Science and Technology 2024年第2期29卷 285-304页

作者： Qihao liu cuiyu Wang Xinyu li liang Gao State Key Laboratory of Intelligent Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China

Considering both process planning and shop scheduling in manufacturing can fully utilize their complementarities,resulting in improved rationality of process routes and high-quality and efficient production. Hence,the study of Integrated Process Planning and Scheduling (IPPS) has become a hot topic in the current production field. However,when performing this integrated optimization,the uncertainty of processing time is a realistic key point that cannot be neglected. Thus,this paper investigates a Fuzzy IPPS (FIPPS) problem to minimize the maximum fuzzy completion time. Compared with the conventional IPPS problem,FIPPS considers the fuzzy process time in the uncertain production environment,which is more practical and realistic. However,it is difficult to solve the FIPPS problem due to the complicated fuzzy calculating rules. To solve this problem,this paper formulates a novel fuzzy mathematical model based on the process network graph and proposes a MultiSwarm Collaborative Optimization Algorithm (MSCOA) with an integrated encoding method to improve the optimization. Different swarms evolve in various directions and collaborate in a certain number of iterations. Moreover,the critical path searching method is introduced according to the triangular fuzzy number,allowing for the calculation of rules to enhance the local searching ability of MSCOA. The numerical experiments extended from the well-known Kim benchmark are conducted to test the performance of the proposed MSCOA. Compared with other competitive algorithms,the results obtained by MSCOA show significant advantages,thus proving its effectiveness in solving the FIPPS problem.

关键词： Integrated Process Planning and Scheduling(IPPS) fuzzy processing time fuzzy completion time MultiSwarm Collaborative Optimization Algorithm(MSCOA)

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Tunnel-structured willemite Zn_(2)SiO_(4):Electronic structure,elastic,and thermal properties

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Journal of Advanced Ceramics 2022年第8期11卷 1249-1262页

作者： Ruqiao DAI Renfei CHENG Jiemin WANG Chao ZHANG cuiyu li Hailong WANG Xiaohui WANG Yanchun ZHOU Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Advanced Computing East China Sub-center Suma Technology Company LimitedKunshan 215300China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China

Willemite Zn_(2)SiO_(4)crystallizes in such a way that Zn and Si are tetrahedrally coordinated with O in an ionic–covalent manner to form ZnO_(4)and SiO_(4)tetrahedra as the building units.The tetrahedra are corner-sharing,of which one SiO_(4)tetrahedron connects eight ZnO_(4)tetrahedra,and one ZnO_(4)tetrahedron links four ZnO_(4)tetrahedra and four SiO_(4)tetrahedra.The unique crystallographic configuration gives rise to parallel tunnels with a diameter of 5.7Åalong the c-axis direction.The tunnel structure of Zn_(2)SiO_(4)definitely correlates with its interesting elastic and thermal properties.On the one hand,the elastic modulus,coefficient of thermal expansion(CTE),and thermal conductivity are low.Zn_(2)SiO_(4)has low Vickers hardness of 6.6 GPa at 10 N and low thermal conductivity of 2.34 W/(m·K)at 1073 K.On the other hand,the elastic modulus and CTE along the c-axis are significantly larger than those along the a-and b-axes,showing obvious elastic and thermal expansion anisotropy.Specifically,the Young’s modulus along the z direction(Ez=179 GPa)is almost twice those in the x and y directions(Ex=Ey=93 GPa).The high thermal expansion anisotropy is ascribed to the empty tunnels along the c-axis,which are capable of more accommodating the thermal expansion along the a-and b-axes.The striking properties of Zn_(2)SiO_(4)in elastic modulus,hardness,CTE,and thermal conductivity make it much useful in various fields of ceramics,such as low thermal expansion,thermal insulation,and machining tools.

关键词： Zn_(2)SiO_(4) electronic structure elastic properties thermal expansion thermal conductivity

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Insight into the underlying competitive mechanism for the shift of the charge neutrality point in a trilayer-graphene field-effect transistor

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eScience 2022年第3期2卷 319-328页

作者： Tao Huang Jiafen Ding Zirui liu Rui Zhang BoLei Zhang Kai Xiong Longzhou Zhang Chong Wang Shili Shen cuiyu li Peng Yang Feng Qiu National Center for International Research on Photoelectric and Energy Materials Yunnan Key Laboratory for Micro/Nano Materials&TechnologySchool of Materials and EnergyYunnan UniversityKunming650500China School of Ecology and Environmental Sciences Yunnan UniversityKunming650500China Advanced Computing East China Sub-center Suma Technology Co.LtdKunshan215300China

Layer-number modulation in graphene has become a recent focus of research due to the superior degree of freedom that can be achieved in terms of magic-angle,wettability,superconductivity,and superlattices.However,the intrinsic transport of multilayer graphene is indistinguishable in atmospheric adsorbates and supporting environment,and its underlying charge transfer mechanism has not yet been thoroughly determined.In this study,a shift in the charge neutrality point of trilayer graphene(TLG)is demonstrated to be regulated by three governing factors:oxygen gas(O_(2)),water molecules(H_(2)O),and thermally activated electrons.Absorbed O_(2) induces a high work function in semimetallic TLG,while H_(2)O is not an evident dopant but can strengthen binding against O_(2) desorption.A simplified model is developed to elucidate the competitive mechanism and charge transfer among these two dopants(O_(2),H_(2)O)and thermal electrons,and the model is demonstrated by work function regulation and Bader charge transfer based on density functional theory calculations.This study provides a strategy to explore transport modulation of multilayer graphene in the fields of ballistic transport and low power consumption of graphene field-effect transistors.

关键词： Trilayer graphene Field-effect transistors Charge neutrality point Work function Charge transfer DFT calculations

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Necessary and Sufficient Conditions for Feasible Neighbourhood Solutions in the Local Search of the Job-Shop Scheduling Problem

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Chinese Journal of Mechanical Engineering 2023年第4期36卷 139-154页

作者： lin Gui Xinyu li liang Gao cuiyu Wang State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China

The meta-heuristic algorithm with local search is an excellent choice for the job-shop scheduling problem(JSP).However,due to the unique nature of the JSP,local search may generate infeasible neighbourhood solutions.In the existing literature,although some domain knowledge of the JSP can be used to avoid infeasible solutions,the constraint conditions in this domain knowledge are sufficient but not necessary.It may lose many feasible solutions and make the local search inadequate.By analysing the causes of infeasible neighbourhood solutions,this paper further explores the domain knowledge contained in the JSP and proposes the sufficient and necessary constraint conditions to find all feasible neighbourhood solutions,allowing the local search to be carried out thoroughly.With the proposed conditions,a new neighbourhood structure is designed in this paper.Then,a fast calculation method for all feasible neighbourhood solutions is provided,significantly reducing the calculation time compared with ordinary methods.A set of standard benchmark instances is used to evaluate the performance of the proposed neighbourhood structure and calculation method.The experimental results show that the calculation method is effective,and the new neighbourhood structure has more reliability and superiority than the other famous and influential neighbourhood structures,where 90%of the results are the best compared with three other well-known neighbourhood structures.Finally,the result from a tabu search algorithm with the new neighbourhood structure is compared with the current best results,demonstrating the superiority of the proposed neighbourhood structure.

关键词： Scheduling Job-shop scheduling Local search Neighbourhood structure Domain knowledge

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澳大利亚乘用车型式认证研究

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中国汽车 2024年第1期 10-13,32页

作者：李翠羽张鹏浩泛亚汽车技术中心有限公司上海201208

本文系统分析了澳大利亚乘用车的技术法规体系和认证要求,并详细介绍了澳大利亚车辆型式认证制度、认证流程及认证计划等,为更多的汽车企业出口澳大利亚提供相关的参考。

关键词：澳大利亚 ADR认证 SUTI

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四川省通川区药用植物资源调查

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中国野生植物资源 2024年第1期43卷 127-134页

作者：李翠羽袁侠张静刘沁珂唐怡付志玺周毅黄春萍四川师范大学生命科学学院四川成都610101 农田生态服务能力建设四川省高校工程研究中心四川成都610101 四川师范大学植物功能基因组及生物信息学研究中心四川成都610101 四川省中医药管理局四川成都610020

目的:依托第四次全国中药资源普查(试点),采用野外样地调查和查阅文献资料等方法,对通川区中药植物资源进行调查,并对科、属组成类型、生活类型、组成特点、药用功效等多方面进行分析,旨在全面系统了解通川区中药材资源的分布情况。方法... 详细信息

目的:依托第四次全国中药资源普查(试点),采用野外样地调查和查阅文献资料等方法,对通川区中药植物资源进行调查,并对科、属组成类型、生活类型、组成特点、药用功效等多方面进行分析,旨在全面系统了解通川区中药材资源的分布情况。方法:通过选择双龙镇、盘石镇等共7个镇、3个乡、1个街道社区等区域,由全国中药资源普查信息管理系统随机生成41个样地,通过调查样方180个,样方套1080个,全面掌握通川区中药材资源的分布情况。结果:共完成36个样地调查,统计到通川区药用植物共775种,隶属于154科,533属,其中被子植物719种,蕨类植物44种,裸子植物12种。结论:通川区中药资源丰富,了解通川区中药材资源分布,可为持续开发利用提供了参考依据。

关键词：通川区中药资源普查药用植物

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Establishment of an optimized CTC detection model consisting of EpCAM,MUC1 and WT1 in epithelial ovarian cancer and its correlation with clinical characteristics

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Chinese Journal of Cancer Research 2022年第2期34卷 95-108页

作者： Tongxia Wang Yan Gao Xi Wang Junrui Tian Yuan li Bo Yu cuiyu Huang Hui li Huamao liang David M.Irwin Huanran Tan Hongyan Guo Department of Obstetrics and Gynecology Peking University Third HospitalBeijing 100191China Department of Pharmacology School of Basic Medical SciencesPeking University Health Science CenterBeijing 100191China Department of Laboratory Medicine and Pathobiology University of TorontoToronto M5S1A8Canada

Objective:Emerging studies have demonstrated the promising clinical value of circulating tumor cells(CTCs)for diagnosis,disease assessment,treatment monitoring and prognosis in epithelial ovarian cancer.However,the clinical application of CTC remains restricted due to diverse detection techniques with variable sensitivity and specificity and a lack of common standards.Methods:We enrolled 160 patients with epithelial ovarian cancer as the experimental group,and 90 patients including 50 patients with benign ovarian tumor and 40 healthy females as the control group.We enriched CTCs with immunomagnetic beads targeting two epithelial cell surface antigens(EpCAM and MUC1),and used multiple reverse transcription-polymerase chain reaction(RT-PCR)detecting three markers(EpCAM,MUC1 and WT1)for quantification.And then we used a binary logistic regression analysis and focused on EpCAM,MUC1 and WT1 to establish an optimized CTC detection model.Results:The sensitivity and specificity of the optimized model is 79.4%and 92.2%,respectively.The specificity of the CTC detection model is significantly higher than CA125(92.2%vs.82.2%,P=0.044),and the detection rate of CTCs was higher than the positive rate of CA125(74.5%vs.58.2%,P=0.069)in early-stage patients(stage I and II).The detection rate of CTCs was significantly higher in patients with ascitic volume≥500 mL,suboptimal cytoreductive surgery and elevated serum CA125 level after 2 courses of chemotherapy(P<0.05).The detection rate of CTC;and CTC;was significantly higher in chemo-resistant patients(26.3%vs.11.9%;26.4%vs.13.4%,P<0.05).The median progression-free survival time for CTC;patients trended to be longer than CTC;patients,and overall survival was shorter in CTC;patients(P=0.043).Conclusions:Our study presents an optimized detection model for CTCs,which consists of the expression levels of three markers(EpCAM,MUC1 and WT1).In comparison with CA125,our model has high specificity and demonstrates better diagnostic values,especially for early-stage ovarian cancer.Detection of

关键词： Circulating tumor cells epithelial ovarian cancer optimized detection model diagnosis and prognosis

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Solving flexible job shop scheduling problem by a multi-swarm collaborative genetic algorithm

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Journal of Systems Engineering and Electronics 2021年第2期32卷 261-271页

作者： WANG cuiyu li Yang li Xinyu School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

The flexible job shop scheduling problem(FJSP),which is NP-hard,widely exists in many manufacturing industries.It is very hard to be solved.A multi-swarm collaborative genetic algorithm(MSCGA)based on the collaborative optimization algorithm is proposed for the FJSP.Multi-population structure is used to independently evolve two sub-problems of the FJSP in the MSCGA.Good operators are adopted and designed to ensure this algorithm to achieve a good performance.Some famous FJSP benchmarks are chosen to evaluate the effectiveness of the MSCGA.The adaptability and superiority of the proposed method are demonstrated by comparing with other reported algorithms.

关键词： flexible job shop scheduling problem(FJSP) collaborative genetic algorithm co-evolutionary algorithm

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基于AHP-模糊综合评价法的化工园区雷电灾害风险评估

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云南师范大学学报（自然科学版） 2024年第2期44卷 43-48页

作者：张健郭杰钱辉韩建广王霞李翠玉李月英庄士千河北省气象与生态环境重点实验室河北石家庄050021 中国气象局雄安大气边界层重点开放实验室河北雄安071800 饶阳国家气候观象台河北衡水053000 河北衡水高新技术产业开发区应急管理局河北衡水053000

为了评估化工园区的雷电灾害区域风险,选取包含园区等级、经济产值、区域防雷安全管理和防雷检查覆盖率等在内的19个评估指标,采用层次分析法和模糊综合评价法,建立化工园区雷电灾害区域风险评估模型,并对河北衡水高新区化工片区开展雷... 详细信息

为了评估化工园区的雷电灾害区域风险,选取包含园区等级、经济产值、区域防雷安全管理和防雷检查覆盖率等在内的19个评估指标,采用层次分析法和模糊综合评价法,建立化工园区雷电灾害区域风险评估模型,并对河北衡水高新区化工片区开展雷电灾害区域风险评估,以发现化工片区的雷灾隐患点和防雷措施薄弱环节,确定科学的防雷减灾策略,有效保障园区内生产安全和人员生命财产安全.

关键词：化工园区雷电灾害区域风险评估层次分析法模糊综合评价法

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Atomic scale structural analysis of liquid immiscibility in binary silicate melt:A case of SiO2–TiO2 system

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Journal of Materials Science & Technology 2020年第18期52卷 53-60页

作者： cuiyu Zhang Xuan Ge Qiaodan Hu Fan Yang Pingsheng Lai Caijuan Shi Wenquan Lu Jianguo li Shanghai Key Laboratory of Materials Laser Processing and Modification School of Materials Science and Engineering.Shanghai Jiao Tong UniversityShanghai 200240China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai UniversityShanghai 200444China

Thermodynamic/dynamic modeling of liquid immiscibility in silicates is seriously hindered due to lack of in situ investigation on the structural evolution of the melt.In this work,atomic-scale structural evolution of a classic binary silicate immiscible system,SiO2–TiO2,is tracked by in situ high energy X-ray diffraction(HE-XRD).It is found that both the configuration of[SiO]and the polymerization between them are closely coupled with embedment and extraction of the metallic cations(Ti^4+).[SiO]monomer goes through deficit-oxygen and excess-polymerization before liquid–liquid separation and enables self-healing after liquid–liquid separation,which challenges the traditional cognition that[SiO4]monomer is immutable.Ti4+cations with tetrahedral oxygen-coordination first participate in the network construction before liquid separation.The four-fold Ti–O bond is broken during liquid separation,which may facilitate the movement of Ti4+across the Si–O network to form TiO2-rich nodules.The structural features of nodules were also investigated and they were found highly analogous to that of molten TiO2,which implies a parallel crystallization behavior in the two circumstances.Our results shed light on the structural evolution scenario in liquid immiscibility at atomic scale,which will contribute to constructing a complete thermodynamic/dynamic framework describing the silicate liquid immiscibility systems beyond current models.

关键词： liquid immiscibility Atomic scale structure Synchrotron radiation In-situ HE-XRD SiO2-TiO2 melt

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