The implementation of high-order (spectral) approximations associated with FEM is an approach to overcome the difficulties encountered in the numerical analysis of complex problems. This paper proposes the use of the spectral finite element method, originally developed for computational fluid dynamics problems, to achieve improved solutions for these types of problems. Here, the interpolation n...

The phase field method integrates the Griffith theory and damage mechanics approach to predict crack initiation, propagation, and branching within one framework. No crack tracking topology is needed, and complex crack shapes can be captures without user intervention. In this paper, a detailed description of how the phase field method is implemented with explicit dynamics into LS-DYNA is provide...

in this study, stability control of a three-wheeled vehicle with two wheels on the front axle, a three-wheeled vehicle with two wheels on the rear axle, and a standard four-wheeled vehicle are compared. for vehicle dynamics control systems, the direct yaw moment control is considered as a suitable way of controlling the lateral motion of a vehicle during a severe driving maneuver. in accordance...

The development of systems theory has been so far remarkably uneven: phases of tumultuous development arousing vivid expectations have been followed by periods of stagnation if not utter regression. Moreover, within the different sciences, the theory of systems is customarily seen and presented in rather different ways. The differences are often so remarkable that one may ask whether there is i...

Use of information technologies in hospital has gained increased attention due to their potential to enhance efficiency and hence reduce costs and increase access. Information systems research has found complex dynamics related to IT impacts. In this research we examine how different patterns in the IT Architecture of hospitals differently impact hospital efficiency. Specifically, we examine th...

tthe uncertainty estimation and compensation are challenging problems for the robust control of robot manipulators which are complex systems. this paper presents a novel decentralized model-free robust controller for electrically driven robot manipulators. as a novelty, the proposed controller employs a simple gaussian radial-basis-function network as an uncertainty estimator. the proposed netw...

Complex Networks can depict a clear image of real-world systems. A scenario be represented graph with interconnected layers - called multilayer network. Finding motifs give an idea the topology complex systems and help understand graphs’ dynamics. Looking at as atoms network is helpful to analyze relationship between nodes layers. This work suggests sub-graph enumeration approach find co...

The dynamic systems approach to robot path planning de nes a \dynamics" of robot behavior in which task constraints contribute independently to a nonlinear vector eld that governs robot actions. We address problems that arise in scaling this approach to handle complex behavioral requirements. We propose a dynamics that operates in the space of task constraints, determining the relative contribu...

where Y is total output (or income), t is time, H is the stock of capital, and L is the labor supply. The parameter α ∈ (0, 1) is a distribution parameter, and σ = 1/(1 − ρ) is the elasticity of substitution between capital and technology-augmented labor. The CES function is among the most commonly employed production functions, and was among the original models presented by [2]. The CES is a g...