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Level set band method: A combination of density-based and level set methods for the topology optimization

Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 390-405 doi: 10.1007/s11465-020-0588-0

Abstract: The level set method (LSM), which is transplanted from the computer graphics field, has been successfullyfor about two decades, but it still has not been widely applied to practical engineering problems as density-basedOne of the reasons is that it acts as a boundary evolution algorithm, which is not as flexible as density-basedconstraint functions by incorporating one parameter, namely, level set band, to seamlessly combine LSM and density-basedmethod to utilize their advantages.

Keywords： level set method     topology optimization     density-based method     level set band    

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Efficient, high-resolution topology optimization method based on convolutional neural networks

Liang XUE, Jie LIU, Guilin WEN, Hongxin WANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 80-96 doi: 10.1007/s11465-020-0614-2

Abstract: Topology optimization is a pioneer design method that can provide various candidates with high mechanicalcomputationally intractable puzzle, especially for the solid isotropic material with penalization (SIMP) methodIn this study, an efficient, high-resolution topology optimization method is developed based on the super-resolutionA combined treatment method that uses 2D SRCNN is built as another speed-up strategy to reduce the highTypical examples show that the high-resolution topology optimization method using SRCNN demonstrates

Keywords： topology optimization     convolutional neural network     high resolution     density-based    

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A local density optimization method based on a graph convolutional network

Hao Wang, Li-yan Dong, Tie-hu Fan, Ming-hui Sun,wanghao18@mails.jlu.edu.cn,dongly@jlu.edu.cn,fth@jlu.edu.cn,smh@jlu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 12,   Pages 1671-1814 doi: 10.1631/FITEE.1900663

Abstract: Success has been obtained using a semi-supervised graph analysis method based on a (GCN).Thus, in the case of numerous unsupervised models based on technology, local node information is importantIn this paper, we apply a local analysis method based on the similar neighbor hypothesis to a GCN, andpropose a definition; we call this method LDGCN.
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Prediction of high-density polyethylene pyrolysis using kinetic parameters based on thermogravimetric

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1606-3

Abstract:

● Reducting the sampling frequency can enhance the modelling process.

Keywords： HDPE     Pyrolysis     Kinetics     Thermogravimetric     ANOVA     Artificial neural network    

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Heterometallic cluster-based organic frameworks as highly active electrocatalysts for oxygen reductionand oxygen evolution reaction: a density functional theory study

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 570-580 doi: 10.1007/s11705-022-2247-y

Abstract: oxygen reduction reaction and oxygen evolution reaction catalytic activities of heterometallic cluster-basedorganic frameworks are investigated using density functional theory.

Keywords： bimetallic metal–organic frameworks     bifunctional electrocatalyst     density functional theory     oxygen    

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Metal-based direct hydrogen generation as unconventional high density energy

Shuo XU, Jing LIU

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 27-53 doi: 10.1007/s11708-018-0603-x

Abstract: This paper comprehensively reviewed and digested the latest researches of the metal-based direct hydrogenthe energy capacities of various metals were summarized, and the application potentials of the metal-basedFurthermore, the challenges lying behind this unconventional hydrogen generation method and energy strategy

Keywords： metal     hydrogen generation     hydrolysis     metal water reaction     clean energy    

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PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4, doi: 10.15302/J-FASE -2020355

Abstract: Plant density and soil available water content and available nitrogen were the three major factors involved

Keywords： boundary line analysis     irrigation method     precision agriculture     spatial variability     yield gaps    

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Design of packing cup interference fit value of hypercompressors for low density polyethylene production

Da LEI,Xuehong LI,Yun LI,Xiwen REN

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 107-113 doi: 10.1007/s11708-017-0450-1

Abstract: The hypercompressor is one of the core facilities in low density polyethylene production, with a dischargeThe traditional method of designing the interference fit value for packing cups depends on the shrink-fitAccording to the traditional method, critical points are at the inner radii of the inner and externalIn this study, the finite element method (FEM) has been implemented to determine a more accurate stressThe traditional method neglects the influence of axial preloading on the interference mating pressure

Keywords： interference fit value     packing cup     hypercompressor     finite element method (FEM)    

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A low-density polyethylene composite with phosphorus-nitrogen based flame retardant and multi-walled

Yong Luo, Yuhui Xie, Renjie Chen, Ruizhi Zheng, Hua Wu, Xinxin Sheng, Delong Xie, Yi Mei

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1332-1345 doi: 10.1007/s11705-021-2035-0

Abstract: Low-density polyethylene was combined with the flame retardant and multi-walled carbon nanotubes to forma nanocomposite material via a ball-milling and hot-pressing method.nanotubes can significantly improve the electrical conductivity and mechanical properties of the low-density

Keywords： MWCNTs     PEPA     electrical conductivity     flame retardant     low density polyethylene    

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Review on cellulose paper-based electrodes for sustainable batteries with high energy densities

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 1010-1027 doi: 10.1007/s11705-023-2307-y

Abstract: Cellulose, the main component of paper, represents a unique type of bio-based building blocks featuringhydrophilicity, biocompatible, mechanical flexibility, and renewability, which make it perfect for use in paper-basedRecent advances and approaches to construct high mass loading paper electrodes toward high energy densitybatteries are evaluated and the limitations of paper-based cathodes are discussed.stimulate the use of natural resources and thereby the development of renewable electric energy systems based

Keywords： cellulose     paper electrodes     Li-ion batteries     high energy density    

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PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL

Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 525-544 doi: 10.15302/J-FASE-2020355

Abstract: Plant density and soil available water content and available nitrogen were the three major factors involved

Keywords： boundary line analysis     irrigation method     precision agriculture     spatial variability     yield gaps     yield-limiting    

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Unified method for typical gear failure modeling and stiffness calculation based on the matrix equation

Frontiers of Mechanical Engineering 2024, Volume 19, Issue 3, doi: 10.1007/s11465-024-0794-2

Abstract: A unified method for typical gear failure modeling and stiffness calculation is introduced in this studyfailure model matrix have the same physical meaning as the parameter variables in the potential energy method(PEM), so the matrix-based failure model can be perfectly matched with PEM.Afterward, a unified method for TVMS is established.The developed unified method is a promising technique for studying the dynamic response characteristics

Keywords： gears     matrix equation     failure modeling     TVMS calculation     unified method    

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Effects of exercise therapy on bone mineral density in early postmenopausal women: a controlled trial

Shilin DENG MD ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 323-329 doi: 10.1007/s11684-009-0061-2

Abstract: effect of a well-designed combined aerobic, resistance, and extension exercise program on bone mineral density

Keywords： early postmenopausal women     bone mineral density     exercise     effects    

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Effect of current density on groundwater arsenite removal performance using air cathode electrocoagulation

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1399-1

Abstract:

• With the same charge, current density had little effect on As(III)

Keywords： Electrocoagulation     Air cathode     Arsenic     Current density     Energy consumption    

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Industrial bio-based plant aggregates as hygric and insulating construction materials for energy efficient

Yunhong Jiang, Mike Lawrence, Meng Zhang, Jiandong Cui

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1532-1532 doi: 10.1007/s11705-020-1960-7

Abstract: In this paper, the bulk density, microstructure, porosity and pore size distribution of the selectedAll the selected aggregates had a low bulk density ranging from 30 to 130 kg∙m and a high porosity betweenThe thermal conductivity of the selected aggregates was not only depending on the bulk density of theThe value increases linearly with bulk density.

Keywords： bio-based aggregates     density     porosity     thermal conductivity     hygric properties    

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Title Author Date Type Operation

Level set band method: A combination of density-based and level set methods for the topology optimization

Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG

Journal Article

Efficient, high-resolution topology optimization method based on convolutional neural networks

Liang XUE, Jie LIU, Guilin WEN, Hongxin WANG

Journal Article

A local density optimization method based on a graph convolutional network

Hao Wang, Li-yan Dong, Tie-hu Fan, Ming-hui Sun,wanghao18@mails.jlu.edu.cn,dongly@jlu.edu.cn,fth@jlu.edu.cn,smh@jlu.edu.cn

Journal Article

Prediction of high-density polyethylene pyrolysis using kinetic parameters based on thermogravimetric

Journal Article

Heterometallic cluster-based organic frameworks as highly active electrocatalysts for oxygen reductionand oxygen evolution reaction: a density functional theory study

Journal Article

Metal-based direct hydrogen generation as unconventional high density energy

Shuo XU, Jing LIU

Journal Article

PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL

Journal Article

Design of packing cup interference fit value of hypercompressors for low density polyethylene production

Da LEI,Xuehong LI,Yun LI,Xiwen REN

Journal Article

A low-density polyethylene composite with phosphorus-nitrogen based flame retardant and multi-walled

Yong Luo, Yuhui Xie, Renjie Chen, Ruizhi Zheng, Hua Wu, Xinxin Sheng, Delong Xie, Yi Mei

Journal Article

Review on cellulose paper-based electrodes for sustainable batteries with high energy densities

Journal Article

PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL

Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU

Journal Article

Unified method for typical gear failure modeling and stiffness calculation based on the matrix equation

Journal Article

Effects of exercise therapy on bone mineral density in early postmenopausal women: a controlled trial

Shilin DENG MD ,

Journal Article

Effect of current density on groundwater arsenite removal performance using air cathode electrocoagulation

Journal Article

Industrial bio-based plant aggregates as hygric and insulating construction materials for energy efficient

Yunhong Jiang, Mike Lawrence, Meng Zhang, Jiandong Cui

Journal Article