1.0 INTRODUCTION 2. 0 MODULATOR CONFIGURATION AND CHARACTERISTICS 3. 0 LOW PRESSURE CW C02 LASER EXPERIMENTS 4. 0 MODE-LOCKING THE C02 TEA LASER 4. I Linewidth of CO TEA Lasers 4. 2 Experimental Configuration and Initial Experiments 4. 3 Measurements of the Optical Quality of the Laser Medium 4. 4 Modifications of the Discharge Configuration to Improve Medium Optical Quality 4. 5 Phase-Locking ...

We consider the 9-node shell element referred to as the MITC9 shell element in plate bending solutions and present a simplified mathematical analysis. The element uses bi-quadratic interpolations of the rotations and transverse displacement, and the “rotated Raviart-Thomas” interpolations for the transverse shear stresses. A rigorous mathematical analysis of the element is still lacking, even f...

A new simple and accurate four-node quadrilateral element is developed for linear static and dynamic analysis of thin to moderately thick laminated, anisotropic plate/shell structures within the first-order shear deformation theory (FSDT). The element is built by incorporating the strain smoothing method of mesh-free conforming nodal integration into the conventional bilinear four-node quadrila...

In this paper, a coupled numerical method of the edge-based smoothed finite element (ES-FEM) with the fast multipole BEM (FM-BEM) is proposed to analyze structural acoustic problems. The vibrating structure is modeled using the so-called ES-FEM-DSG3 method, where the 3-node linear triangle plate elements based on the Reissner–Mindlin plate theory with the discrete shear gap (DSG) technique for ...

In this paper, a hybrid structural finite element (FE) acoustic wave based (WB) approach is formulated to avoid using extra acoustic FE in the case of a simple structural geometry but with complicated structural material properties. Following the formulation, the approach is implemented and validated. First, linear hexahedral solid elements with a selective reduced integration are implemented i...

Most modern computing systems are having multicore processors with multilevel caches for high performance. Caches increase total power consumption and worsen execution time unpredictability. Studies show that way (or partial) cache locking may improve timing predictability and performance-to-power ratio for both single-core and multicore systems. Even though both private first-level and shared ...

We present a computational study of the effects of viscoelasticity on the electromechanical behavior of dielectric elastomers. A dynamic, finite deformation finite element formulation for dielectric elastomers is developed that incorporates the effects of viscoelasticity using the nonlinear viscoelasticity theory previously proposed by Reese and Govindjee. The finite element model features a th...

BACKGROUND Working memory (WM) deficits are a core feature of schizophrenia. Recent electrophysiological evidence indicates that the brain systems for visual encoding are especially impaired. However, patients still achieve performance levels clearly above chance, which indicates the existence of residual mechanisms supporting WM encoding. The present study presents evidence that alpha phase lo...

Hydraulic sorting of detrital mineral grains in the swash zone was investigated using data on sedimentology and flow dynamics obtained from Fishermans Beach, on the east coast of Australia. The beach is characteristically reflective, displaying a steep beach face composed of medium sand and virtually no surf zone. Samples were taken from two beds enriched in heavy minerals, and from the adjacen...