The linear prediction (LP) HMM does not make the independent and identical distribution (IID) assumption in the traditional HMM; however it often produces unsatisfactory results. In our previous paper [7], both HMMs’ modeling strengths and weaknesses were analyzed and a new combined model of statics-dynamics of speech was proposed. It works with LPHMM as the dynamic part and with the traditiona...

A wide range of composite material forms are finding use in today’s aerospace, automotive, and other transportation industry segments. The Boeing 787 commercial airliner, unveiled in 2007, features over 50% carbon fiber composites by structural weight, while the entire structure of the Lamborghini Sesto Elemento supercar, unveiled in 2011, is made exclusively from carbon fiber composites [1-2]....

ABS'I'KAC'I' A decade of observation in South San Francisco Bay demonstrates that estuarine phytoplankton biomass fluctuates at the time scale of days to weeks, and that much of this variability is associated with fluctuations in tidal energy. During the spring seasons of every year from 1980-1990, episodic blooms occurred in which phytoplankton biomass rose from a baseline of 2-4 mg chlorophyl...

This paper deals with modelling of the orthogonal machining process using tools with different geometries. The finite element method (FEM) is used for a simulation based on the Lagrangian formulation including ANSYS/LS-DYNA software. The constitutive Johnson – Cook material model regarding strain, strain rate and temperature to predict material plasticity and chip separation is used. Chip morph...

This paper reports on the finite element analysis (FEA) of crosstalk in capacitive micromachined ultrasonic transducer (CMUT) arrays. Finite element calculations using a commercial package (LS-DYNA) were performed for an immersed 1-D CMUT array operating in the conventional and collapsed modes. LS-DYNA was used to model the crosstalk in CMUT arrays under specific voltage bias and excitation con...

A virtual finite element framework is presented to provide the transition from a high fidelity model more computationally efficient continuum for simulating fibre-dominated damage behavior in composite laminates subjected tensile loadings. The method LS-DYNA based on use of cohesive interface elements simulate both intra-laminar matrix cracks and delamination. Applied IM7/8552 carbon fibre rein...

Dyna-Q is a reinforcement learning method widely used in AGV path planning. However, large complex dynamic environments, due to the sparse reward function of and searching space, this has problems low search efficiency, slow convergence speed, even inability converge, which seriously reduces performance practicability it. To solve these problems, paper proposes an Improved algorithm for plannin...

In the Deep-drawing process, a blank is drawn into hollow element taking shape of die by operation punch. This process has numerous advantages and applications in automobile, aerospace, kitchenware, packaging industries. The primary purpose this study to design simulate deep drawing LS-Dyna PrePost(R) V4.6.17 using Johnson-Cook flow stress as material model. An appropriate judicious characteriz...