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Underfill encapsulant is important for improving chip device reliability. Gap height is a decisive factor to accelerate the filling speed which directly improves packaging efficiency. In this paper, the effect of gap height on non- Newtonian underfill flow is studied numerically and experimentally. Especially, 2D and 3D finite volume method (FVM) numerical models are used to explore the functional...
In this article, an efficient parallel algorithm for a hybrid CPU-GPU platform is proposed to enable large-scale molecular dynamics (MD) simulations of the metal solidification process. The results, implemented the parallel algorithm program on the hybrid CPU-GPU platform shows better performance than the program based on previous algorithms running on the CPU cluster platform. By contrast, the total...
Stochasticity plays important roles in regulation of biochemical reaction networks when the copy numbers of molecular species are small. Studies based on Stochastic Simulation Algorithm (SSA) has shown that a basic reaction system can display stochastic focusing (SF) by increasing the sensitivity of the network as a result of the signal noise. Although SSA has been widely used to study stochastic...
Simultaneous Algebraic reconstruction technique (SART) has been widely applied to CT image reconstruction, but it is influenced by the noise interference, and as a result, the image quality is affected. In this article, we propose a modified SART algorithm to improve the quality of the image reconstruction, which constructs a new diffusion coefficient by the PM model, and makes the SART algorithm...
3D reconstruction from hyper spectral images has seldom been addressed in the literature. This is a challenging problem because 3D models reconstructed from different spectral bands demonstrate different properties. If we use a single band or covert the hyper spectral image to gray scale image for the reconstruction, fine structural information may be lost. In this paper, we present a novel method...
Gene regulatory networks depict the interactions between genes, proteins, and other components of the cell. These interactions often are stochastic that can influence behavior of the cells. Discrete Chemical Master Equation (dCME) provides a general framework for understanding the stochastic nature of these networks. However solving dCME is challenging due to the enormous state space, one effective...
Cell polarization, the generation of cellular asymmetries, is a fundamental biological process. Polarity of different molecules can arise through several mechanisms. Among these, internalization has been shown to play an important role in the polarization of cell surface receptors. The internalization of cell surface receptors can be upregulated upon ligand binding. Additional regulatory mechanism...
This paper deals with the stabilization of fuzzy stochastic systems with multiplicative noise subject to actuator saturation. The Itô's differential equation is used to present the nonlinear stochastic system. Moreover, the Takagi-Sugeno (T-S) fuzzy model is employed to approximate a nonlinear continuous system with multiplicative noise. The actually physical capacity of the actuator is limited and...
The aims of this study were to investigate thedetectability of the propagation of the gastric slowwave from the cutaneous electrogastrogram (EGG) and thepatterns of the EGG when the gastric slow waves are uncoupled. A mathematical model wasestablished based on the volume conductor theory tosimulate the transfer of the serosal gastric slow wavefrom the stomach to the abdominal surface. A number of...
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