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Behavior Prediction of Telecom Consumers’ Choice with Packages Based on Improved Nested Logit Model 25th

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Behavior Prediction of Telecom Consumers’ Choice with Packa...

A particle swarm optimization algorithm on the surgery scheduling problem with downstream process 25th

第25届中国控制与决策会议

作者： yunhui miao Jiafu Tang Gang Qu School of Business Administration Northeastern University School of Management Liaoning University of Technology College of Information Science and Engineering Northeastern University

ISBN: (纸本)9781467355339

Traditional nested logit model assumes that the consumers are complete rationality when predicting the choice of consumer behavior. But in actual, consumers are often limited rationality. Reference dependent model analyzes the consumers’ behavior with limited rationality, and it extends the value function of prospect theory in multiple attributes. This paper will improve the traditional nested logit model based on reference dependence. We will consider multiple attributes and multiple reference points, and predict the choice behavior of telecom consumers with limited rationality about packages. Finally, in the example analysis, we will utilize the actual data of some telecom operator to analyze the original and improved models. Through the nested logit regression analysis using software STATA, the results will verify the effectiveness of the improved model further.

关键词： Nested Logit Model Reference Dependent Model Reference Point Choice Behavior Predict Limited rationality

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A particle swarm optimization algorithm on the surgery sched...

Effect of Ellipsoidal Particle Shape on Tribological Properties of Lubricants Containing Nanoparticles

第25届中国控制与决策会议

作者： WANG Yu miao yunhui ZHU Huabo TANG Jiafu Dept. of Systems Engineering State Key Lab of Synthetic Automation of Process Industry Northeastern University

ISBN: (纸本)9781467355339

This paper focuses on generating an optimal surgery schedule of elective-patients in multiple operating theatres, which considering the intra-operative care and recovery phases. We try to determine the surgery sequence and location. With regard to the downstream process, recovery room, the problem is modeled as a hybrid integer program with the objective of minimizing the operating costs of hospital, which includes operating rooms’ fixed costs, operating rooms’ overtime costs and recovery costs. A discrete particle swarm optimization algorithm combined with heuristic rules is proposed. We text our approach with realistic data, the results show the algorithm we present basically reached the same level of CPLEX, while the computation time is far less than CPLEX. Additionally, the approach can find the optimized number of daily opening operating rooms and recovery beds through varying parameters in the experiment, which give management insights to hospital and reduce the daily operating cost.

关键词： Operating theatre Scheduling Discrete particle swarm optimization Heuristic

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Chinese Journal of Mechanical Engineering 2024年第4期37卷 231-242页

作者： Ling Pan Zhi Li yunhui Chen Guobin Lin School of Advanced Manufacturing Fuzhou UniversityQuanzhou 362251FujianChina School of Mechanical Engineering and Automation Fuzhou UniversityFuzhou 350108FujianChina

Adding nanoparticles can significantly improve the tribological properties of ***,there is a lack of understanding regarding the influence of nanoparticle shape on lubrication *** this work,the influence of diamond nanoparticles(DNPs)on the tribological properties of lubricants is investigated through friction ***,the friction characteristics of lubricants regarding ellipsoidal particle shape are investigated using molecular dynamics(MD)*** results show that DNPs can drastically lower the lubricant's friction coefficientμfrom 0.21 to *** shearing process reveals that as the aspect ratio(α)of the nanoparticles approaches 1.0,the friction performance improves,and wear on the wall *** the same time,the shape of the nanoparticles tends to be *** 0.85≤α≤1.0,rolling is ellipsoidal particles'main form of motion,and the friction force changes according to a periodic sinusoidal *** the range of 0.80≤α<0.85,ellipsoidal particles primarily exhibit sliding as the dominant movement ***αdecreases within this range,the friction force progressively *** friction coefficientμcalculated through MD simulation is 0.128,which is consistent with the experimental data.

关键词： Molecular dynamics simulation Nanoparticle additives Ellipsoidal particles Tribological properties

Inhibiting Voltage Decay in Li-Rich Layered Oxide Cathode:From O3-Type to O2-Type Structural Design

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Nano-Micro Letters 2024年第12期16卷 81-102页

作者： Guohua Zhang Xiaohui Wen Yuheng Gao Renyuan Zhang yunhui Huang Institute of New Energy for Vehicles Shanghai Key Laboratory for R&D and Application of Metallic Functional MaterialsSchool of Materials Science and EngineeringTongji UniversityShanghai 201804People’s Republic of China Contemporary Amperex Technology Co. LtdNingde 352100People’s Republic of China State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China

Li-rich layered oxide(LRLO)cathodes have been regarded as promising candidates for next-generation Li-ion batteries due to their exceptionally high energy density,which combines cationic and anionic redox ***,continuous voltage decay during cycling remains the primary obstacle for practical applications,which has yet to be fundamentally *** is widely acknowledged that voltage decay originates from the irreversible migration of transition metal ions,which usually further exacerbates structural evolution and aggravates the irreversible oxygen redox ***,constructing O2-type structure has been considered one of the most promising approaches for inhibiting voltage *** this review,the relationship between voltage decay and structural evolution is systematically *** to suppress voltage decay are systematically ***,the design of O2-type structure and the corresponding mechanism of suppressing voltage decay are comprehensively ***,the reported O2-type LRLO cathodes still exhibit partially disordered structure with extended ***,the factors that may cause the irreversible transition metal migrations in O2-type LRLO materials are also explored,while the perspectives and challenges for designing high-performance O2-type LRLO cathodes without voltage decay are proposed.

关键词： Lithium-ion batteries Li-rich layered oxide Voltage decay Migration of transition metal ions O2-type structural design

Tuning the solubility of polysulfides for constructing practical lithium-sulfur battery

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Journal of Energy Chemistry 2024年第8期95卷 611-617,I0013页

作者： Jiapeng Li Jianlong Cong Haijin Ji Ting Shi Lixia Yuan yunhui Huang State Key Laboratory of Material Processing and Die&Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

Li-S batteries are regarded as one of the most promising candidates for next-generation battery systems with high energy density and low ***,the dissolution-precipitation reaction mechanism of the sulfur(S)cathode enhances the kinetics of the redox processes of the insulating sulfu r,which also arouses the notorious shuttle effect,leading to serious loss of S species and corrosion of Li *** get a balance between the shuttle restraining and the kinetic property,a combined strategy of electrolyte regulation and cathode modification is proposed via introducing 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoroprpyl ether(HFE)instead of 1,2-dimethoxyethane(DME),and SeS_(7)instead of S_*** introduction of HFE tunes the solvation structure of the LiTFSI and the dissolution of intermediate polysulfides with Se doping(LiPSSes),and optimize the interface stability of the Li anode *** minor Se substitution compensates the decrease in kinetic due to the decreased solubility of *** this way,the Li-SeS_(7)batteries deliver a reversible capacity of 1062 and 1037 mAh g^(-1)with 2.0 and 5.5 mg SeS_(7)cm^(-2)loading condition,***,an electrolyte-electrode loading model is established to explain the relationship between the optimal electrolyte and cathode *** makes more sense to guide the electrolyte design for practical Li-S batteries.

关键词： Li-S batteries Lithium polysulfides Solubility Shuttle effect Interface Se doping

SAM Era:Can It Segment Any Industrial Surface Defects?

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Computers, Materials & Continua 2024年第3期78卷 3953-3969页

作者： Kechen Song Wenqi Cui Han Yu Xingjie Li yunhui Yan National Key Laboratory of Advanced Casting Technologies Shenyang110022China School of Mechanical Engineering&Automation Northeastern UniversityShenyang110819China

Segment Anything Model(SAM)is a cutting-edge model that has shown impressive performance in general object *** birth of the segment anything is a groundbreaking step towards creating a universal intelligent *** to its superior performance in general object segmentation,it quickly gained attention and *** makes SAM particularly attractive in industrial surface defect segmentation,especially for complex industrial scenes with limited training ***,its segmentation ability for specific industrial scenes remains ***,in this work,we select three representative and complex industrial surface defect detection scenarios,namely strip steel surface defects,tile surface defects,and rail surface defects,to evaluate the segmentation performance of *** results show that although SAM has great potential in general object segmentation,it cannot achieve satisfactory performance in complex industrial *** test results are available at:https://***/VDT-2048/SAM-IS.

关键词： Segment anything SAM surface defect detection salient object detection

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5G技术与我国制造业国际市场竞争力的提升

学术交流 2020年第10期 124-132页

作者：苗蕴慧姚爽沈阳化工大学经济与管理学院沈阳110142

我国已是世界工厂,但要成长为制造业强国,需要不断推进中国制造向中国智造转变。5G技术代表着新一代信息技术的发展趋势,且我国已在5G研发和应用中处于领先地位。我国应积极利用5G技术优势加速推进制造业信息化和智能化,用5G技术应用及... 详细信息

我国已是世界工厂,但要成长为制造业强国,需要不断推进中国制造向中国智造转变。5G技术代表着新一代信息技术的发展趋势,且我国已在5G研发和应用中处于领先地位。我国应积极利用5G技术优势加速推进制造业信息化和智能化,用5G技术应用及其产生的带动、示范和溢出效应提升我国制造业的国际竞争力。对此,建议从以下几方面着手:第一,继续加强5G技术研发,强化我国国际领先优势;第二,突破关键技术约束,推进5G与制造业融合运用;第三,灵活应对贸易保护冲击,构建稳定的国际分工体系;第四,引导资金向实体产业流动,破解5G技术制造业推广融资难题。

关键词： 5G技术制造业信息化国际竞争力

A universal non-Hermitian platform for bound state in the continuum enhanced wireless power transfer

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Frontiers of physics 2024年第4期19卷 37-46页

作者： Haiyan Zhang Zhiwei Guo yunhui Li Yaping Yang Yuguang Chen Hong Chen School of Physics Science and Engineering Tongji UniversityShanghai 200092China Department of Electrical Engineering Tongji UniversityShanghai 201804China

Non-Hermitian systems with parity–time(PT)-symmetry have been extensively studied and rapidly developed in resonance wireless power transfer(WPT).The WPT system that satisfies PT-symmetry always has real eigenvalues,which promote efficient energy ***,meeting the condition of PT-symmetry is one of the most puzzling *** power transfer under different transmission conditions is also a great *** state in the continuum(BIC)supporting extreme quality-factor mode provides an opportunity for efficient ***,we propose theoretically and demonstrate experimentally that BIC widely exists in resonance-coupled systems without PT-symmetry,and it can even realize more stable and efficient power transfer than PT-symmetric ***,BIC for efficient WPT is universal and suitable in standard second-order and even high-order WPT *** results not only extend non-Hermitian physics beyond PT-symmetry,but also bridge the gap between BIC and practical application engineering,such as highperformance WPT,wireless sensing and communications.

关键词： non-Hermitian physics parity-time asymmetry bound state in the continuum wireless power transfer

Colorimetric and Photothermal Dual-modal Visual Detection of Iodide Ion Based on G-Quadruplex-Hemin Cascade Signal Amplification

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Chemical Research in Chinese Universities 2024年第2期40卷 305-310页

作者： CHEN Yanyue LIU Jiali LIU Jiawen HU Rong YANG yunhui ZHANG Xiaobing College of Chemistry and Chemical Engineering Yunnan Normal UniversityKunming650500P.R.China Molecular Science and Biomedicine Laboratory State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollaborative Innovation Center for Molecular Engineering for TheronasticsHunan UniversityChangsha410082P.R.China

The insufficient internal resorption of iodide ions(I−)leads to thyroid disorders,such as goiter,hypothyroidism,and cretinism in *** this paper,a portable point-of-care testing(POCT)platform was developed for the dual-modal analysis of I^(−),seamlessly integrating both colorimetric and photothermal thermometer *** quantification of results was achieved using a standard thermometer or smartphone.G-Quadruplex/Hemin(G4/Hemin)is the DNAzyme with peroxidase-like *** catalytic efficacy of G-quadruplex structures can be enhanced with the help of I^(−),manifesting as multicolor transitions from colorless to green and then blue,and accompanied by the increase of temperature,which can be used for the quantitative detection of I^(−).Additionally,digital analysis according to the three-color channels(R/G/B)by a cellphone eliminated the requirement for intricate *** dual-modal method for portable I^(−)determination is cost-effectiveness,simplicity,remarkable sensitivity(0.5 nmol/L)and ***,it was applied to determining the concentration of I^(−)in spiked serum samples.

关键词： Dual-modal platform G-Quadruplex Iodide ion Point-of-care testing(POCT) Aptasensor