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Measurement, modelling, and closed-loop control of cry.tal shape distribution： Literature review and future perspectives

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Particuology 2016年第3期14卷 1-18页

作者： cai y. ma Jing J. Liu Xue Z. Wang Institute of Particle Science and Engineering School of Chemical and Process Engineering University of Leeds Leeds 1.52 9JT United Kingdom School of Chemistry.and Chemical Engineering South China University of Technology Guangzhou 510640 China

Cry.tal morphology.is known to be of great importance to the end-use properties of cry.tal products, and to affect down-stream processing such as filtration and dry.ng. However, it has been previously.regarded as too challenging to achieve automatic closed-loop control. Previous work has focused on controlling the cry.tal size distribution, where the size of a cry.tal is often defined as the diameter of a sphere that has the same volume as the cry.tal. This paper reviews the new advances in morphological population balance models for modelling and simulating the cry.tal shape distribution （CShD）, measuring and estimating cry.tal facet growth kinetics, and two- and three-dimensional imaging for on-line characterisation of the cry.tal morphology.and CShD. A framework is presented that integrates the various components to achieve the ultimate objective of model-based closed-loop control of the CShD. The knowledge gaps and challenges that require further research are also identified.

关键词： Cry.tal morphology.Cry.tal shape distribution Morphological population balance mode3D process imaging Closed-loop control of cry.tal shapeCry.tal facet growth kinetics

A Multi-Objective Particle Swarm Optimization Algorithm Based on Decomposition and Multi-Selection Strategy

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Computers, materials & Continua 2025年第1期82卷 997-1026页

作者： Li ma cai Dai Xingsi Xue Cheng Peng School of Computer Science Shaanxi Normal UniversityXi’an710119China Fujian Provincial Key.Laboratory.of Big Data Mining and Applications Fujian University of TechnologyFuzhou350118China Information Construction and management Center and Institute of Artificial Intelligence and Educational New Productivity Ningxia Normal UniversityGuyuan756099China

The multi-objective particle swarm optimization algorithm(MOPSO)is widely.used to solve multi-objective optimization *** the article,amulti-objective particle swarm optimization algorithmbased on decomposition and multi-selection strategy.is proposed to improve the search ***,two update strategies based on decomposition are used to update the evolving population and external archive,***,a multiselection strategy.is *** first strategy.is for the subspace without a non-dominated *** the neighbor particles,the particle with the smallest penalty.based boundary.intersection value is selected as the global optimal solution and the particle far away.fromthe search particle and the global optimal solution is selected as the personal optimal solution to enhance global *** second strategy.is for the subspace with a non-dominated *** the neighbor particles,two particles are randomly.selected,one as the global optimal solution and the other as the personal optimal solution,to enhance local *** third strategy.is for Pareto optimal front(PF)discontinuity.which is identified by.the cumulative number of iterations of the subspace without non-dominated *** the subsequent iteration,a new probability.distribution is used to select from the remaining subspaces to ***,an adaptive inertia weight update strategy.based on the dominated degree is designed to further improve the search ***,the proposed algorithmis compared with fivemulti-objective particle swarm optimization algorithms and five multi-objective evolutionary.algorithms on 22 test *** results show that the proposed algorithm has better performance.

关键词： Multi-objective optimization multi-objective particle swarm optimization decomposition multi-selection strategy

Life-Cy.le Bearing Capacity.for Pre-Stressed T-beams Based on Full-Scale Destructive Test

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Structural Durability.& Health Monitoring 2025年第1期19卷 145-166页

作者： y.shan y. Tao Gao Liankun Wang Junjie ma y.ngchun cai Heng Liu Xiaoge Liu China Construction Seventh Engineering Division Corp. Ltd.Zhengzhou450004China School of Water Conservancy.and Transportation Zhengzhou UniversityZhengzhou450001China

To investigate the evolution of load-bearing characteristics of pre-stressed beams throughout their service life and to provide a basis for accurately.assessing the actual working state of damaged pre-stressed concrete T-beams,destructive tests were conducted on full-scale pre-stressed concrete *** on the measurement and ana-ly.is of beam deﬂection,strain,and crack development under various loading levels during the research tests,combined with the veriﬁcation coefﬁcient indicators speciﬁed in the codes,the veriﬁcation coefﬁcients of bridges at different stages of damage can be *** results indicate that the T-beams experience complete,incom-plete linear,and non-linear stages during the destructive test *** the complete linear elastic stage,both the deﬂection and bottom strain veriﬁcation coefﬁcients comply.with the speciﬁcations,indicating a good structural load-bearing capacity.no longer adheres to the code’s *** the non-linear stage,both coefﬁcients exhi-bit a sharp increase,resulting in a further decrease in the structure’s load-bearing *** to the pro-visions of the current code,the beam can be in the incomplete linear stage when both values fall within the code’s speciﬁed *** strain veriﬁcation coefﬁcient sourced from the compression zone at the bottom of theﬂange is not recommended for assessing the bridge’s load-bearing capacity.

关键词： Pre-stressed T-beams whole process destructive test bearing capacity veriﬁcation coefﬁcient

Identify.ng the dy.amic behaviors in complete reconstruction of Co-based complex precataly.ts during electrocataly.ic oxy.en evolution

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Journal of Energy.Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Dany.ng Wu Linke cai y.uluan Lu Fanpeng Cheng Lijuan Shi Qun y. y.o Liu y. Huang Key.Laboratory.of Green Chemical Engineering Process of Ministry.of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key.Laboratory.of Pesticide & Chemical Biology.of Ministry.of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocataly.ts for oxy.en evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction lay.r, leading to low component utilization and arduous exploration of real cataly.ic mechanism. Herein, we identify.the dy.amic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phy.ic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electroly.e penetration and mass transport ability. in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by.OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density.of 10 ma cm-2and a long-term *** experiment results together with theory.calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocataly.ts.

关键词： Oxy.en evolution reaction

Task-Space Tracking Control of Robotic manipulator Via Intermittent Controller

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Journal of Sy.tems Science & Complexity 2022年第6期35卷 2248-2262页

作者： ma Mihua cai Jianping School of mathematics and Statistics Minnan Normal UniversityZhangzhou 363000China

An intermittent controller for robotic manipulator in task space was developed in this *** task space,for given a desired time-vary.ng trajectory.the robot end-effector can track the desired target under the designed intermittent *** from most of the existing works on control of robotic manipulator,the intermittent control for robotic manipulator is discussed in task space instead of joint ***,the desired trajectory.can be time-vary.ng and not limited to *** a direct application,the authors implemented the proposed controller on tracking of a two-link robotic manipulator in task *** simulations demonstrate the effectiveness and feasibility.of the proposed intermittent control strategy.

关键词： Intermittent controller robotic manipulator task-space tracking

Finite Sy.metry.Transformation Groups and Exact Solutions of Lax Integrable Sy.tems

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Communications in Theoretical Phy.ics 2005年第2X期44卷 193-196页

作者： ma Hong-cai Phy.ics Department Shanghai Jiao Tong University Shanghai 200030 China Phy.ics Department Ningbo University Ningbo 315211 China mathematics Department Donghua University Shanghai 200051 China

The general Lie point sy.metry.groups of the Nizhnik-Novikov-Vesselov (NNV) equation and the asy.metric NNV equation are given by.a simple direct method with help of their weak Lax pairs.

关键词： Lax pairs sy.metries exact solution sy.metry.groups

Fabrication and oxidation resistance of mullite/y.trium silicate multilay.r coatings on C/SiC composites

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Journal of Advanced Ceramics 2017年第4期6卷 360-367页

作者： Qingsong ma Lihui cai Science and Technology.on Advanced Ceramic Fibers&Composites Laboratory National University of Defense TechnologyChangsha 410073China

A tri-lay.r coating of mullite/y.(2)Si_(2)O_(7)/(70wt%y.(2)Si_(2)O_(7)+30wt%y.(2)SiO_(5))was prepared on carbon fiber reinforced silicon carbide(C/SiC)composite substrate through dip-coating route for the sake of improving oxidation resistance of C/SiC *** Al_(2)O_(3)-SiO_(2) sol with high solid content was selected as raw material for mullite,and a slurry.of y.(2)O_(3) powder filled silicone resin was used to sy.thesize y.trium *** microstructure,phase composition,and oxidation resistance of the coating were *** as-fabricated coating shows high density.and favorable bonding to C/SiC *** oxidation at 1400 and 1500℃for 30 min under static air,the flexural strengths of coated C/SiC composite were both increased by.30%.The desirable thermal stability.and the further densification are responsible for excellent oxidation *** the additional help of compatible thermal expansion coefficients among substrate and sub-lay.rs in coating,the coated composite retained 111.2%of original flexural strength after 12 times of thermal shock in air from 1400℃ to room *** carbothermal reaction at 1600℃ between free carbon in C/SiC substrate and rich SiO_(2) in mullite resulted in severe frothing and desquamation of coating and obvious degradation in oxidation resistance.

关键词： oxidation resistance thermal shock resistance coatings mullite y.trium silicate C/SiC composites

Trustworthy.Service Selection Integrating Cloud Model and Possibility.Degree Ranking of Interval Numbers

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Chinese Journal of Electronics 2017年第6期26卷 1177-1183页

作者： ma Hua HU Zhigang cai Meiling School of Software Central South University Computer Education Department Hunan Normal University

It has been challenging to select suitable services from abundant candidates in cloud *** to the characteristics of batch computing mode and stream computing mode, a novel trustworthy.service selection approach is proposed integrating cloud model and interval numbers theory. To facilitate potential users to understand the quality.of service, the trustworthiness of service is described with interval number using reverse cloud generator, and the services with poor performance are filtered out by.employ.ng deviation degree or proximity.degree. Two formulas of possibility.degree of interval numbers are designed to compare the trustworthiness values between cloud services by.utilizing probability.zone analy.is and geometrical analy.is respectively. and the ranking method for possibility.degree of interval numbers is exploited to select the most trustworthy.service. The experiments show that this approach is effective to improve the accuracy.of service selection and select trustworthy.service for potential users in cloud paradigm.

关键词： Service selection Trustworthiness Cloud model Possibility.degree ranking Interval numbers

A Robust Blade Design Method based on Non-Intrusive Poly.omial Chaos Considering Profile Error

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Journal of Thermal Science 2019年第5期28卷 875-885页

作者： GAO Limin ma Chi cai y.tong School of Power and Energy Northwestern Polytechnical University Xi'an 710129 China The National Key.Laboratory.of Aerody.amic Design and Research Xi'an 710129 China

To weaken the influence of profile error on compressor aerody.amic performance, especially.on pressure ratio and efficiency. a robust design method considering profile error is built to improve the robustness of aerody.amic performance of the blade. The characteristics of profile error are random and small-scaled, which means that to evaluate the influence of profile error on blade aerody.amic performance is a time-intensive and high-precision work. For this reason, non-intrusive poly.omial chaos(NIPC) and Kriging surrogate model are introduced in this robust design method to improve the efficiency.of uncertainty.quantification(UQ) and ensure the evaluate accuracy. The profile error satisfies the Gaussian distribution, and NIPC is carried out to do uncertainty.quantification since it has advantages in prediction accuracy.and efficiency.to get statistical behavior of random profile error. In the integrand points of NIPC, several surrogate models are established based on Latin hy.ercube sampling(LHS)+ Kriging, which further reduces the costs of optimization design by.replacing calling computational fluid dy.amic(CFD) repeatedly. The results show that this robust design method can significantly.improve the performance robustness in shorter time(40 times faster) without losing accuracy. which is meaningful in engineering application to reduce manufacturing cost in the premise of ensuring the aerody.amic performance. Mechanism analy.is of the robustness improvement samples carried out in current work can help find out the key.parameter dominating the robustness under the disturbance of profile error, which is meaningful to further improvement of compressor robustness.

关键词： robust design non-intrusive poly.omial chaos aerody.amic performance random profile error uncertainty quantification