An individualized 3D masticatory system model was constructed using advanced 3D data processing software that integrated 3D images from different sources. Individualized mandibular movement and masticatory muscle performance were simulated using this model. The analysis of the bite force generated on the lower incisors with the orthodontic bite plate suggested that a thickness of 3 mm may be appropriate for clinical use.

Target passive locating and tracking is a typical application for UAV. In this paper, the state space model of airborne bearing-only tracking was firstly introduced. A typical flight trajectory of UAV was simulated by integrated navigation based on the Federal Kalman Filter. And then, according to the navigation parameters from the flight trajectory, an Air-to-Sea passive locating and tracking were simulated based on UKF. The result shows that the CEP of the locating precision is less than 50m. Finally, Some factors which seriously affect the locating precision are discussed. UKF 2.1 e t a r r , a t ta e r r r − = (1) e b ta e b e ta b r R r = (2) b e

This study focuses on the cell bump distortion and bearing capacity of parafoil structure. Based on the mechanical properties of the membrane structure, the spanwise model of parafoil inflation was established and verified by comparing with the fluid-structure interaction (FSI) results. Because the internal pressure is very low, the chordwise stiffness is mainly generated by suspending lines. The chordwise model of inflated parafoil was established in consideration of elastic force and aerodynamic force. The results show that the cell is slenderer; the canopy surface is smoother; the aerodynamic load has a light effect on the shrinkage and bump ratios; when the cell width is constant, the critical dynamic pressure reduces k times with the k times increasing in parafoil area; and the design parameters of the first-row line OA have significant effects on the structural stiffness of inflated parafoil. The analytical model is useful for the weakening deformation design and the safety discussion of large parafoil for rocket booster recovery.