This is an application of new longitudinal structural equation modeling techniques to time-dependent associations of memory and brain structure measurements. There were 225 participants aged 30-80 years at baseline who were measured again after a 7-year interval on both the lateral ventricular size and Wechsler memory score. Multiple regression analyses show nonlinear associations with age but ...

The principal objective of this research is to reduce the elapsed time of largescale nonlinear dynamic structural finite element analysis using parallel computing techniques. The major tasks and contributions of this research are: (a) employing the general sparse matrix technique to reduce the computing time and storage requirements for both sequential and parallel substructure analysis (b) emp...

A musical piece typically has repetitive structures. Analysis of this structure can be used for music indexing, thumbnailing or segmentation. The research described here aims at automatically analyzing the repetitive structure of musical signals. First, we detect the repetition of each segment in a piece using dynamic programming. Second, we summarize this repetition information and infer the s...

Antibodies are well-known proteins that defend against bacterial and viral infections. At the molecular level, antibodies in solution are flexible and exist in populations of different structures with different energy levels which are important for antigen binding and immunological functions. In the present post-genome era, although many three-dimensional structures of proteins, including antib...

In this paper we describe the implementation of a service oriented environment that enables to couple a parallel application, which performs the 3D linear dynamic structural analysis of high-rise buildings, to a Grid Computing infrastructure. The Grid service, developed under Globus Toolkit 4, exposes the dynamic simulation as a service to the structural scientific community. It employs the GMa...

Analytical tools and processes are being developed at NASA Marshal Space Flight Center in support of the Advanced Mirror Technology Development (AMTD) project. One facet of optical performance is mechanical stability with respect to structural dynamics. Pertinent parameters are: (1) the spacecraft structural design, (2) the mechanical disturbances on-board the spacecraft (sources of vibratory/t...

The aim of this paper is to provide an aeroelastic computational tool which determines the induced wing loads during flapping flight. For this purpose, a Finite Element (FE) code based on a four-node plate bending element formulation is developed to simulate the aeroelastic behavior of flapping wings in low incompressible flow. A quasi-steady aerodynamic model is incorporated into the aeroelast...