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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

Dramatical enhancement of circular dichroism in chiral hybrid perovskites via carboxylic hydrogen bond engineering

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Science China Chemistry 2025年

作者： Hang Li Xinling Li peng Wang Tingting Zhu Ruiqing Li Huang Ye Yaru Geng Hongliang dai Junhua Luo State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences Fujian College University of Chinese Academy of Sciences College of Chemistry Fuzhou University College of Chemistry and Materials Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of EducationJiangxi Normal University

Chiral hybrid perovskites （CHPs） have been regarded as promising candidates for developing chiroptoelectronics ***,circular dichroism （CD）,as one of the most important characteristics to evaluate the chiroptical activity,remains at a comparatively low level in CHPs compared to other chiral materials,which hinders the successful applications of CHPs in stateof-the-art ***,exploring new methods for enhancing CD in CHPs is urgently needed and remains ***,enhanced CD response has been successfully realized via constructing carboxylic hydrogen bonding in chiralachiral mixed cations perovskites （R/S-PPA）2（ABA）PbBr5（2R/2S）(PPA=1-phenylpropylamine,ABA=4-aminobutyric acid).Compared with the prototype （R/S-PPA）PbBr3（1R/1S）,2R/2S provide intimate connections between organic units and inorganic parts via carboxylic hydrogen bonding N–H···O bridge,contributing new chirality transfer paths.A larger inorganic skeletons’helicity in 2R/2S predicts a high degree of chirality ***,2R/2S exhibit significantly enhanced CD response with an anisotropy factor amplified by an order of ***,bright blue circularly polarized luminescence applications are achieved in 2R/*** work systematically investigates the correlation between CD and hydrogen bonding interaction in CHPs,meanwhile providing a new avenue to develop the application potential of chiral materials in chiroptoelectronics.

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云星胶囊治疗维持性血液透析患者的临床研究

中国医药指南 2009年第20期7卷 22-23页

作者：周泽梅晏佳余慰计蕾彭献代重庆市第三人民医院肾内科 400014

目的探讨云星胶囊对维持性血液透析患者微炎症状态、营养不良、免疫功能的影响。方法将36例维持性血液透析患者随机分为两组,治疗组18例,给予云星胶囊1g/次,3次/d;对照组18例,给予安慰剂胶囊,治疗时间为6个月。结果治疗结束时,治疗组C... 详细信息

目的探讨云星胶囊对维持性血液透析患者微炎症状态、营养不良、免疫功能的影响。方法将36例维持性血液透析患者随机分为两组,治疗组18例,给予云星胶囊1g/次,3次/d;对照组18例,给予安慰剂胶囊,治疗时间为6个月。结果治疗结束时,治疗组C反应蛋白(CRP)水平明显降低,HDL、WBC、PLT、Alb水平明显升高,差异具有统计学意义(P<0.005),体质量指数及反复呼吸道感染率差异具有统计学意义(P<0.05),而对照组各项指标治疗前后无明显变化。结论云星胶囊可降低维持性血液透析患者CRP水平,升高HDL、WBC、PLT、Alb水平,改善患者微炎症状态、营养不良及免疫功能。

关键词：云星胶囊维持性血液透析微炎症状态营养不良免疫功能

Coupling effect and characterization modeling of iron ore fines mixing and granulating at 0-1 mm

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Journal of Iron and Steel Research International 2019年第11期26卷 1154-1161页

作者： dai-fei Liu xian-ju Shi Chao-jun Tang Hai-peng Cao Jun Li School of Energy and Power Engineering Changsha University of Science and TechnologyChangsha 410114HunanChina Ironmaking Section Wuhan Branch of Baosteel Central Research Institute(R&D Center of Wuhan Iron&Steel Co.Ltd.)Wuhan 430000HubeiChina

Characteristic of iron ore is the essential factor of *** ores,namely specularite,magnetite concentrate and limonite,were selected as adhesion powder to investigate granulating behavior and evolution process of *** and modeling were performed to represent granulating behavior on the basis of selectivity,ballability and adhesion *** mass fraction of water and particles size of adhesion and nucleation were set at(11±1)%,0-1 mm and 3-5 mm,*** results show that selectivity and ballability promote the evolution of *** water absorption rate of specularite and the ballability of limonite are *** coupling effects exist in two ores mixing and present positive effect when the proportion of magnetite concentrate is greater than that of specularite or specularite and limonite *** three ores mixing,the coupling effect presents a complex superposition state.A characterization model of adhesion rate of mixing granulation was established by random forest *** output is adhesion rate,and its inputs include water absorption rate,balling index and mixing *** model parameters are 957 trees and four branches,and the training and prediction errors of the model are 2.3%and 3.7%,*** indicates that the random forest model can be used to represent coupling effects of mixing granulation.

关键词： Iron ore Granulating Coupling effect Modeling Random forest algorithm

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高混凝土面板堆石坝接缝止水试验研究和应用

岩土工程学报 2025年第1期47卷 30-37页

作者：郦能惠王立安任强张志韬张贤王新奇代巧枝南京水利科学研究院岩土工程研究所江苏南京210024 黄河勘测规划设计研究院有限公司河南郑州450031

混凝土面板堆石坝是当前最有竞争力的坝型,为保障高混凝土面板堆石坝的安全,坝体和面板的应力变形性状以及接缝位移成为研究的重点之一,通过止水材料开发、接缝止水结构设计和止水结构防渗模型试验研究提出了高混凝土面板堆石坝新型止... 详细信息

混凝土面板堆石坝是当前最有竞争力的坝型,为保障高混凝土面板堆石坝的安全,坝体和面板的应力变形性状以及接缝位移成为研究的重点之一,通过止水材料开发、接缝止水结构设计和止水结构防渗模型试验研究提出了高混凝土面板堆石坝新型止水结构,并应用于高混凝土面板堆石坝工程。在此基础上进行了高坝新型接缝止水结构力学特性试验研究,形成了试验方法,建立了高坝新型止水结构的劲度表达式,通过在某高坝工程的应用表明提出的接缝止水应力应变关系全面反映高坝新型止水结构各主要部件对于面板与趾板以及面板之间力的传递的贡献,更好地反映复杂地形地质条件下高坝设计布置的影响,具有一定的工程应用价值。

关键词：混凝土面板堆石坝接缝止水应力变形性状劲度表达式

Hydrothermal synthesis and photoluminescence behavior of CeO_2 nanowires with the aid of surfactant PVP

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International Journal of Minerals,Metallurgy and Materials 2010年第4期17卷 470-474页

作者： Ming-zai Wu Yan-mei Liu peng dai Zhao-qi Sun xian-song Liu Key Laboratory of Opto-electronic Information Acquisition and Manipulation Anhui University Hefei 230039 China Engineering Technology Research Center of Magnetic Materials Anhui University Hefei 230039 China

Well-crystalline CeO_2 nanowires were prepared via a surfactant-assisted hydrothermal *** temperature and reaction time were changed for the determination of optimal synthesis *** as-obtained products were characterized by X-ray diffraction （XRD）,high-resolution transmission electron microscopy（HRTEM）,and field emission scanning electron microscopy（FESEM）.The results show that single crystal CeO_2 nanowires with high yield and good uniformity can be obtained hydrothermally at 180℃for 12 h with the aid of 2.0 g surfactant（polyvinyl pyrrolidone,PVP）.The role of PVP was then discussed and a possible growth mechanism was proposed. Moreover,room temperature photoluminescence（PL） spectra were obtained for these CeO2 nanowires,which are believed to be related to the abundant defects in these nanostructures.

关键词： cerium oxide polyvinyl pyrrolidone hydrothermal photoluminescence

Experimental investigation on the cuttings formation process and its relationship with cutting force in single PDC cutter tests

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Petroleum Science 2023年第3期20卷 1779-1787页

作者： xian-Wei dai Zhong-Wei Huang Tao Huang peng-Ju Chen Huai-Zhong Shi Shuang Yan State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanPR China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum-BejingBeijing102249PR China PetroChina Southwest Oil and Gasfield Company Northeast Sichuan Gas District PR China

The single polycrystalline diamond compact(PDC)cutter test is widely used to investigate the mecha-nism of *** generated cuttings and cutting force are important indexes reflecting the rock failure ***,they were treated as two separate parameters in previous *** this study,through a series of rock block cutting tests,the relationship between them was investigated to obtain an in-depth understanding of the formation of *** addition,to validate the standpoints obtained in the aforementioned experiments,rock sheet cutting tests were conducted and the rock failure process was monitored by a high-speed camera frame by *** cutting force was recorded with the same sampling rate as the *** this design,every sampled point of cutting force can match a picture captured by the camera,which reflects the interaction between the rock and the *** results indicate that the increase in cutting depth results in a transition of rock failure *** shallow cutting depth,ductile failure dominates and all the cuttings are produced by the compression of the *** corresponding cutting force fluctuates ***,beyond the critical depth,brittle failure occurs and chunk-like cuttings appear,which leads to a sharp decrease in cutting *** that,the generation of new surface results in a significant decrease in actual cutting depth,a parameter proposed to reflect the interaction between the rock and the ***,ductile failure dominates again and a slight fluctuation of cutting force can be *** the cutter moves to the rock,the actual cutting depth gradually increases,which results in the subsequent generation of chunk-like *** is accompanied by an obvious cutting force *** is,ductile failure and brittle failure,one following another,present at large cutting *** transition of rock failure mode can be correlated with the variation of cutting *** on the results of

关键词： Rock breaking Cutting force PDC cutter Cuttings

Static recrystallization behavior of 25CrMo4 mirror plate steel during two-pass hot deformation

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Journal of Iron and Steel Research International 2017年第2期24卷 222-228页

作者： peng Zhou Qing-xian Ma Department of Mechanical Engineering Tsinghua University Beijing 100084 China Key Laboratory for Advanced Materials Processing Technology of Ministry of Education Tsinghua University Beijing 100084 China

The static recrystallization behavior of 25CrMo4 mirror plate steel has been determined by hot compression testing on a Gleeble 1500 thermal mechanical simulation tester. Compression tests were performed using double hit schedules at temperatures of 950-- 1 150 ~C, strain rates of 0.01--0.5 s-1 , and recrystallization time of 1--100 s. Results show that the kinetics of static recrystallization and the microstructural evolution were greatly influenced by the deformation parameters （deformation temperature, strain rate and pre strain） and the initial austenite grain size. Based on the experimental results, the kinetics model of static recrystallization has been generated and the comparison between the experimental results and the predicted results has been carried out. It is shown that the predicted results were in good agreement with the experimental results.

关键词： Hot deformation Static recrystallization 25CrMo4 Kinetics equation Microstructure

Earth-abundant photovoltaic semiconductor NaSbS2 in the rocksalt-derived structure:A first-principles study

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Progress in Natural Science:Materials International 2019年第3期29卷 322-328页

作者： xian Zhang Menglin Huang peng Xu Chen-Min dai Zenghua Cai Dan Han Shiyou Chen Key Laboratory of Polar Materials and Devices (MOE) and Department of Optoelectronics East China Normal University Department of Physics China Three Gorges University Collaborative Innovation Center of Extreme Optics Shanxi University

NaSbS2was recently proposed as a novel photovoltaic semiconductor with earth-abundant component elements,but its fundamental material properties have not been well *** systematical first-principles calculations for its electronic,optical and defect properties were carried out in the present study,and the results show that:i)NaSbS2in the rocksalt-derived structure has a quasi-direct band gap and thus may have long minority carrier lifetime;ii) its absorption coefficients are as high as 10～4～10～5 cm-1for the visible light and almost isotropic despite that the structure is distorted relative to the high-symmetry rocksalt structure;iii) the effective masses of the electron and hole carriers are anisotropic with much larger values along the z direction than in the x-y plane,and hence the orientational control of thin films should be important for enhancing the photovoltaic performance;iv) the valence and conduction band edges of NaSbS2are close to those of CuGaSe2) so the n-CdS/pCuGaSe2device structure can be inherited to form the n-CdS/p-NaSbS2solar cells;v) the acceptor defects (NaSbantisites and Na vacancies) have very high concentration,making the synthesized NaSbS2always be p-type;vi)the S-rich condition can suppress the formation of deep-level donor defects (S vacancies and SbNaantisites) and therefore should be adopted for fabricating high-efficiency NaSbS2solar cells.

关键词： NaSbS2 Photovoltaic semiconductor Optical absorption coefficients Defects First-principles calculation