Methods: A 3D finite element method was used to assess the model of a partially edentulous mandible, Kennedy Class I, with dental implants placed at the region of teeth 33 and 43. The geometric solid model was built from CT-scan images and prototyping. In the discrete model a parametric analysis was performed to analyze the influence of cancellous bone density (25 %, 50 %, 75 %) on the developm...

A simple mathematical model is proposed to compute the steady-state performance of six-phase self-excited induction generators. A mathematical model is formed directly from the equivalent circuit of six-phase selfexcited induction generator by nodal admittance method. The proposed model completely eliminates the tedious work involved in the existing models. Genetic algorithm is applied to solve...

background epstein barr virus (ebv) is one of the most common viral infections in human population. ebv has a significant role in pathogenesis of hodgkin's lymphoma, burkitt's lymphoma and nasopharyngeal carcinoma. the role of ebv in non-hodgkin’s lymphoma, diffuse large b cell (nhl - dlbl) in the head and neck is controversial. objectives the purpose of this study is to find out the ...

Objectives The pathological mechanism for a disorder of consciousness (DoC) is still not fully understood. Based on traditional behavioral scales, there high rate misdiagnosis subtypes DoC. We aimed to explore whether topological characterization may explain the mechanisms DoC and be effective in diagnosing Methods Using resting-state functional magnetic resonance imaging data, weighted brain n...

This paper presents a physics-based approach to anatomical surface segmentation, reconstruction, and tracking in multidimensional medical images. The approach makes use of a dynamic "balloon" model--a spherical thin-plate under tension surface spline which deforms elastically to fit the image data. The fitting process is mediated by internal forces stemming from the elastic properties of the sp...

The elastic parameters of soft tissues are important for medical diagnosis and virtual surgery simulation. In this study, we propose a novel nonlinear parameter estimation method for soft tissues. Firstly, an in-house data acquisition platform was used to obtain external forces and their corresponding deformation values. To provide highly precise data for estimating nonlinear parameters, the me...

In a recent paper, M. Green and P. Griffiths used R. Thomas’ works on nodal hypersurfaces to establish the equivalence of the Hodge conjecture and the existence of certain singular admissible normal functions. Inspired by their work, we study normal functions using M. Saito’s mixed Hodge modules and prove that the existence of singularities of the type considered by Griffiths and Green is equiv...

In order to perform mixed-domain simulation of electrically actuated bow-tie shaped doubly-fixed microbeams, a nodal model for the trapeziform beam and corresponding equivalent circuit are developed by HSPICE. The nonlinearities including mid-plane stretching and electrostatic forcing are considered. In the modeling, the Galerkin residual method is used to discretize the partial differential eq...

In this research note we provide a variational basis for the optimal artificial diffusion method, which has been a cornerstone in developing many stabilized methods. The optimal artificial diffusion method produces exact nodal solutions when applied to one-dimensional problems with constant coefficients and forcing function. We first present a variational principle for a multi-dimensional advec...

In the design flow of integrated circuits, chip-level verification is an important step that sanity checks the performance is as expected. Power grid verification is one of the most expensive and time-consuming steps of chip-level verification, due to its extremely large size. Efficient power grid analysis technology is highly demanded as it saves computing resources and enables faster iteratio...