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Large-Scale Multi-Objective Optimization Algorithm Based on Weighted Overlapping Grouping of Decision Variables

Computer Modeling in Engineering & Sciences 2024年第7期140卷 363-383页

作者： Liang chen Jingbo Zhang linjie Wu Xingjuan Cai Yubin Xu Shanxi Key Laboratory of Big Data Analysis and Parallel Computing Taiyuan University of Science and TechnologyTaiyuan030024China School of State Key Laboratory of Novel Software Technology Nanjing UniversityNanjing210008China

The large-scale multi-objective optimization algorithm(LSMOA),based on the grouping of decision variables,is an advanced method for handling high-dimensional decision variables.However,in practical problems,the interaction among decision variables is intricate,leading to large group sizes and suboptimal optimization effects;hence a large-scale multi-objective optimization algorithm based on weighted overlapping grouping of decision variables(MOEAWOD)is proposed in this paper.Initially,the decision variables are perturbed and categorized into convergence and diversity variables;subsequently,the convergence variables are subdivided into groups based on the interactions among different decision variables.If the size of a group surpasses the set threshold,that group undergoes a process of weighting and overlapping grouping.Specifically,the interaction strength is evaluated based on the interaction frequency and number of objectives among various decision variables.The decision variable with the highest interaction in the group is identified and disregarded,and the remaining variables are then reclassified into subgroups.Finally,the decision variable with the strongest interaction is added to each subgroup.MOEAWOD minimizes the interactivity between different groups and maximizes the interactivity of decision variables within groups,which contributed to the optimized direction of convergence and diversity exploration with different groups.MOEAWOD was subjected to testing on 18 benchmark large-scale optimization problems,and the experimental results demonstrate the effectiveness of our methods.Compared with the other algorithms,our method is still at an advantage.

关键词： Decision variable grouping large-scale multi-objective optimization algorithms weighted overlapping grouping direction-guided evolution

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Few-layered hexagonal boron nitride nanosheets stabilized Pt NPs for oxidation promoted adsorptive desulfurization of fuel oil

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Green Energy & Environment 2024年第3期9卷 495-506页

作者： Peiwen Wu Xin Song Linlin chen Lianwen He Yingcheng Wu Duanjian Tao Jing He Chang Deng linjie Lu Yanhong Chao Mingqing Hua Wenshuai Zhu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang212013China College of Chemical Engineering and Environment State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingBeijing102249China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang330022China College of Science State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingBeijing102249China

A few-layered hexagonal boron nitride nanosheets stabilized platinum nanoparticles(Pt/h-BNNS)is engineered for oxidation-promoted adsorptive desulfurization(OPADS)of fuel oil.It was found that the few-layered structure and the defective sites of h-BNNS not only are beneficial to the stabilization of Pt NPs but also favor the adsorption of aromatic sulfides.By employing Pt/h-BNNS with a Pt loading amount of 1.19 wt%as the active adsorbent and air as an oxidant,a 98.0%sulfur removal over dibenzothiophene(DBT)is achieved along with a total conversion of the DBT to the corresponding sulfones(DBTO_(2)).Detailed experiments show that the excellent desulfurization activity originates from the few-layered structure of h-BNNS and the high catalytic activity of Pt NPs.In addition,the OPADS system with Pt/h-BNNS as the active adsorbent shows remarkable stability in desulfurization performance with the existence of different interferents such as olefin,and aromatic hydrocarbons.Besides,the Pt/h-BNNS can be recycled 12 times without a significant decrease in desulfurization performance.Also,a process flow diagram is proposed for deep desulfurization of fuel oil and recovery of high value-added products,which would promote the industrial application of such OPADS strategy.

关键词： Desulfurization Adsorption Catalytic oxidation Active adsorbent Dibenzothiophene

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A New Position Calibration Method for MUSER Images

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Research in Astronomy and Astrophysics 2022年第10期22卷 202-216页

作者： Zhichao Zhou Yihua Yan linjie chen Wei Wang Suli Ma State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China National Astronomical Observatories Chinese Academy of SciencesBejing 100101China University of Chinese Academy of Sciences Beijing 100049China

The Mingantu Spectral Radioheliograph(MUSER),a new generation of solar dedicated radio imagingspectroscopic telescope,has realized high-time,high-angular,and high-frequency resolution imaging of the Sun over an ultra-broadband frequency range.Each pair of MUSER antennas measures the complex visibility in the aperture plane for each integration time and frequency channel.The corresponding radio image for each integration time and frequency channel is then obtained by inverse Fourier transformation of the visibility data.However,the phase of the complex visibility is severely corrupted by instrumental and propagation effects.Therefore,robust calibration procedures are vital in order to obtain high-fidelity radio images.While there are many calibration techniques available—e.g.,using redundant baselines,observing standard cosmic sources,or fitting the solar disk—to correct the visibility data for the above-mentioned phase errors,MUSER is configured with non-redundant baselines and the solar disk structure cannot always be exploited.Therefore it is desirable to develop alternative calibration methods in addition to these available techniques whenever appropriate for MUSER to obtain reliable radio images.In the case where a point-like calibration source contains an unknown position error,we have for the first time derived a mathematical model to describe the problem and proposed an optimization method to calibrate this unknown error by studying the offset of the positions of radio images over a certain period of the time interval.Simulation experiments and actual observational data analyses indicate that this method is valid and feasible.For MUSER’s practical data the calibrated position errors are within the spatial angular resolution of the instrument.This calibration method can also be used in other situations for radio aperture synthesis observations.

关键词： instrumentation interferometers-Sun radio radiation-techniques interferometric-techniques image processing-methods data analysis-methods observational-Sun activity-(Sun:)solar-terrestrial relations

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Engineered high-strength biohydrogel as a multifunctional platform to deliver nucleic acid for ameliorating intervertebral disc degeneration

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Bioactive Materials 2023年第7期25卷 107-121页

作者： Tao chen Qiuping Qian Pooyan Makvandi Ehsan Nazarzadeh Zare Qizhu chen linjie chen Zhiguang Zhang Hao Zhou Wenxian Zhou Hui Wang Xiangyang Wang Yu chen Yunlong Zhou Aimin Wu Department of Orthopaedics Key Laboratory of Orthopaedics of Zhejiang ProvinceThe Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhouZhejiang325000China Zhejiang Engineering Research Center for Tissue Repair Materials Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325000China Institute for Bioengineering School of EngineeringThe University of EdinburghEdinburghEH93FBUK School of Chemistry Damghan UniversityDamghan36716-45667Iran Wenzhou Medical University WenzhouZhejiang325000China Materdicine Lab School of Life SciencesShanghai UniversityShanghai200444China

Intervertebral disc degeneration(IVDD)is a leading cause of low back pain.The strategy of using functional materials to deliver nucleic acids provides a powerful tool for ameliorating IVDD.However,the immunogenicity of nucleic acid vectors and the poor mechanical properties of functional materials greatly limit their effects.Herein,antagomir-204-3p(AM)shows low immunogenicity and effectively inhibits the apoptosis of nucleus pulposus cells.Moreover,a high-strength biohydrogel based on zinc-oxidized sodium alginate-gelatin(ZOG)is designed as a multifunctional nucleic acid delivery platform.ZOG loaded with AM(ZOGA)exhibits great hygroscopicity,antibacterial activity,biocompatibility,and biodegradability.Moreover,ZOGA can be cross-linked with nucleus pulposus tissue to form a high-strength collagen network that improves the mechanical properties of the intervertebral disc(IVD).In addition,ZOGA provides an advantageous microenvironment for genetic expression in which AM can play an efficient role in maintaining the metabolic balance of the extracellular matrix.The results of the radiological and histological analyses demonstrate that ZOGA restores the height of the IVD,retains moisture in the IVD,and maintains the tissue structure.The ZOGA platform shows the sustained release of nucleic acids and has the potential for application to ameliorate IVDD,opening a path for future studies related to IVD.

关键词： Intervertebral disc degeneration Hydrogel Nucleic acid MicroRNA Delivery Extracellular matrix

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Achieving long-cycling sodium-ion full cells in ether-based electrolyte with vinylene carbonate additive

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Journal of Energy Chemistry 2021年第6期30卷 650-655,I0016页

作者： Juan Shi Lina Ding Yanhua Wan Liwei Mi linjie chen Dan Yang Yuxiong Hu Weihua chen Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001HenanChina Henan Key Laboratory of Functional Salt Materials Center of Advanced Materials ResearchZhongyuan University of TechnologyZhengzhou 450007HenanChina College of Pharmacy Zhengzhou UniversityZhengzhou 450001HenanChina

Application of sodium-ion batteries is suppressed due to the lack of appropriate electrolytes matching cathode and anode simultaneously.Ether-based electrolytes,preference of anode materials,cannot match with high-potential cathodes failing to apply in full cells.Herein,vinylene carbonate(VC)as an additive into NaCF_(3) SO_(3)-Diglyme(DGM)could make sodium-ion full cells applicable without preactivation of cathode and anode.The assembled FeS@C||Na3 V2(PO_(4))_(3)@C full cell with this electrolyte exhibits long term cycling stability and high capacity retention.The deduced reason is additive VC,whose HOMO level value is close to that of DGM,not only change the solvent sheath structure of Na^(+),but also is synergistically oxidized with DGM to form integrity and consecutive cathode electrolyte interphase on Na3 V2(PO_(4))_(3)@C cathode,which could effectively improve the oxidative stability of electrolyte and prevent the electrolyte decomposition.This work displays a new way to optimize the sodium-ion full cell seasily with bright practical application potential.

关键词： Cathode electrolyte interphase Sodium-ion batteries Full cell Ether-based electrolyte Vinylene carbonate DFT calculation

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通过从头算非绝热分子动力学研究1T-VSe_(2)中的光激发诱导自旋动力学

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Science China Materials 2024年第4期67卷 1253-1259页

作者：陈林杰郑镇法郑奇靖李群祥赵瑾 Department of Chemical Physics School of ChemistryUniversity of Science and Technology of ChinaHefei 230026China Department of Physics and ICQD/Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China Key Laboratory of Precision and Intelligent Chemistry University of Science and Technology of ChinaHefei 230026China

利用光激发来操控二维材料中的磁矩是实现光自旋电子学器件的基础.本工作中,我们利用从头算非绝热分子动力学模拟,研究了光激发如何改变二维铁磁金属VSe_(2)中的磁矩.我们发现自旋-轨道耦合作用和声子激发导致了自旋向上和自旋向下电子... 详细信息

利用光激发来操控二维材料中的磁矩是实现光自旋电子学器件的基础.本工作中,我们利用从头算非绝热分子动力学模拟,研究了光激发如何改变二维铁磁金属VSe_(2)中的磁矩.我们发现自旋-轨道耦合作用和声子激发导致了自旋向上和自旋向下电子态发生混合,并在费米能级以上1.0 eV附近形成了一个自旋混合区.当自旋向上或向下的电子在弛豫过程中经过这个混合区时,它们会丢失原有的自旋方向.当电子从费米面以上2.0 eV左右向下弛豫时,自旋向下的电子发生带内弛豫,而自旋向上的电子发生带间弛豫.因此,自旋向下电子的弛豫速度比自旋向上电子高出约一个数量级.这种自旋向上和自旋向下电子的动态行为差异导致了VSe_(2)的磁矩在光激发后10 fs内先增大,这对应了自旋向下电子失去了原始的自旋方向;随后,磁矩在100 fs内减小,这对应了自旋向上电子失去了原始自旋的方向;最后,系统的总磁矩在皮秒的时间尺度内逐渐恢复到光激发前的水平.这项工作为我们了解光激发如何操控二维材料的磁性提供了理论依据.

关键词：从头算弛豫过程费米面费米能级电子态自旋动力学二维材料非绝热

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铁锰基双金属复合材料构建及其污染物的降解能力研究

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环境科学学报 2024年第3期44卷 38-50页

作者：朱建华李梦迪杨鑫茹林杰王晨安徽工业大学冶金减排与资源综合利用教育部重点实验室马鞍山243002 安徽工业大学冶金工程与资源综合利用安徽省重点实验室马鞍山243002

采用水热法制备出纳米薄片状Mn-Fe-HMT前驱体,并在不同的热解温度下制备出双金属复合材料.结果发现,该衍生物保留了前驱体的片状结构,以及较多的金属活性位点,可以在40 min内降解98.8%的橙黄Ⅱ.催化剂受大多数无机离子、水体干扰较小,... 详细信息

采用水热法制备出纳米薄片状Mn-Fe-HMT前驱体,并在不同的热解温度下制备出双金属复合材料.结果发现,该衍生物保留了前驱体的片状结构,以及较多的金属活性位点,可以在40 min内降解98.8%的橙黄Ⅱ.催化剂受大多数无机离子、水体干扰较小,可以在pH=3~9范围内有效使用.机理研究表明,氧空位促进了单线态氧(1O_(2))的形成,可显著提高其催化效率.该合成方法提供了一种新的双金属化合物合成思路,为非自由基途径降解有机污染物提供了范例.

关键词：双金属复合材料 MOFs衍生物有机物降解氧空位(OV)

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蛋白质结构预测模型AlphaFold2的应用进展

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生物工程学报 2024年第5期40卷 1406-1420页

作者：张弘王慧洁鲁睿捷兰家靖陈林洁何小柏杭州医学院检验医学院与生物工程学院浙江杭州310053 检验诊断关键技术浙江省工程研究中心浙江杭州310053 浙江省生物标志物与体外诊断转化重点实验室浙江杭州310053

蛋白质结构预测是生命科学和医学的重要研究领域,也是人工智能在科学研究中的重要应用场景。AlphaFold2是由DeepMind开发的一种基于深度学习的蛋白质结构预测系统,可以从氨基酸序列中高效地生成原子级精度的蛋白质空间结构。由于AlphaFo... 详细信息

蛋白质结构预测是生命科学和医学的重要研究领域,也是人工智能在科学研究中的重要应用场景。AlphaFold2是由DeepMind开发的一种基于深度学习的蛋白质结构预测系统,可以从氨基酸序列中高效地生成原子级精度的蛋白质空间结构。由于AlphaFold2优越的性能,自问世以来对蛋白质结构预测方面的研究提供了前所未有的助力,因此备受关注和研究。本文介绍了AlphaFold2的模型架构、亮点、局限性和应用进展,列举了几种其他类型的蛋白质结构预测模型,并讨论了其能力、优势及局限性并思考该蛋白质结构预测模型的未来发展方向。

关键词： AlphaFold2 蛋白质结构蛋白质结构预测深度学习

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某管廊工作井施工对既有铁塔基础的安全风险评估

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工程技术研究 2024年第8期9卷 18-20,27页

作者：严鸿金林杰陈斌杭州市市政设施管理中心浙江杭州310005 浙大城市学院浙江杭州310015 浙江省长三角城市基础设施科学研究院浙江杭州310003

文章以某管廊工作井施工为例,采用PLAXIS 3D软件建立三维模型,进行数值分析,研究顶管工作井施工中十二个工况对既有铁塔基础的影响,在顶管工作井施工过程中,对邻近输电塔影响最大的步骤为基坑内外土体加固阶段。评估该工程引起的既有工... 详细信息

文章以某管廊工作井施工为例,采用PLAXIS 3D软件建立三维模型,进行数值分析,研究顶管工作井施工中十二个工况对既有铁塔基础的影响,在顶管工作井施工过程中,对邻近输电塔影响最大的步骤为基坑内外土体加固阶段。评估该工程引起的既有工程风险等级,可为既有工程安全评定提供参考。

关键词：管廊工作井铁塔基础安全风险评估

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Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor application

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Frontiers of Chemical Science and Engineering 2023年第12期17卷 2088-2100页

作者： Xicheng Gao Jianqiang Bi linjie Meng Lulin Xie chen Liu Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China

NiFe_(2)O_(4) is a kind of bimetallic oxide possessing excellent theoretical capacity and application prospect in the field of supercapacitors.Whereas,due to the inherent poor conductivity of metal oxides,the performance of NiFe_(2)O_(4) is not ideal in practice.Oxygen vacancies can not only enhance the conductivities of NiFe_(2)O_(4) but also provide better adsorption of OH,which is beneficial to the electrochemical performances.Hence,oxygen vacancies engineered NiFe_(2)O_(4)(NiFe_(2)O_(4)‒δ)is obtained through a two-step method,including a hydrothermal reaction and a further heat treatment in activated carbon bed.Results of electron paramagnetic resonance spectra indicate that more oxygen vacancies exist in the treated NiFe_(2)O_(4)‒δthan the original one.UV-Vis diffuse reflectance spectra prove that the treated NiFe_(2)O_(4)‒δowns better conductivity than the original NiFe_(2)O_(4).As for the electrochemical performances,the treated NiFe_(2)O_(4)‒δperforms a high specific capacitance of 808.02 F∙g^(‒1) at 1 A∙g^(‒1).Moreover,the asymmetric supercapacitor of NiFe_(2)O_(4)‒δ//active carbon displays a high energy density of 17.7 Wh∙kg^(‒1) at the power density of 375 W∙kg^(‒1).This work gives an effective way to improve the conductivity of metal oxides,which is beneficial to the application of metal oxides in supercapacitors.

关键词： nickel ferrite oxygen vacancy high conductivity supercapacitor

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