The normal force between two particles with different equivalent diameters for P3: (a) hertznormal contact force; (b) normal viscous contact force. by Yongfeng Zhu (7361045)

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Different ellipsoidal particles with De = 6.30 mm used in the discrete element simulations. by Yongfeng Zhu (7361045)

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Average contact force and percentage of strong contact force under different conditions: (a) different particle shapes, (b) different particle sizes. by Yongfeng Zhu (7361045)

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Stress concentration factor value in the numerical samples with different shapes and sizes. by Yongfeng Zhu (7361045)

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Comparative analysis of the proposed modified contact model against previous approaches. by Yongfeng Zhu (7361045)

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Fabric anisotropy evolution of numerical samples with different shapes and sizes. by Yongfeng Zhu (7361045)

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Deviatoric stress-strain curves of numerical samples composed of elongated ellipsoids with different particle morphologies and particle sizes. by Yongfeng Zhu (7361045)

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Numerical samples composed of elongated ellipsoids before and after triaxial compression. by Yongfeng Zhu (7361045)

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Different contact patterns for two ellipsoids. by Yongfeng Zhu (7361045)

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The normal force between two particles with De = 6.30 mm for different aspect ratios and sphericities: (a) hertz normal contact force; (b) normal viscous contact force. by Yongfeng Zhu (7361045)

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The force chain distributions of different numerical samples composed of elongated ellipsoids with different particle morphologies and particle sizes before shearing and after load... by Yongfeng Zhu (7361045)

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The tangential force between two particles with different aspect ratios and sphericities for De = 6.30 mm: (a) elastic tangential contact force; (b) viscous tangential contact forc... by Yongfeng Zhu (7361045)

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Critical state parameters obtained from DEM simulations. by Yongfeng Zhu (7361045)

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The tangential force between two particles with different equivalent diameters for P3: (a) elastic tangential contact force; (b) viscous tangential contact force. by Yongfeng Zhu (7361045)

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ITSA regression results of weekly total cost and cost components per capita for inpatients in the non-surgical group before and after DIP payment intervention. by Chenxuan Zhu (22622476)

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Changes in weekly total costs and cost components per capita in surgical and non-surgical groups before and after the DIP payment intervention. by Chenxuan Zhu (22622476)

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DIP grouping and aggregation system. by Chenxuan Zhu (22622476)

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SCD results of the cost structure for inpatients in the non-surgical group. by Chenxuan Zhu (22622476)

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DIP coding logic example. by Chenxuan Zhu (22622476)

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DIP pre-payment and provider behavior mechanism. by Chenxuan Zhu (22622476)

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