These latent difference score analyses were previously presented to the International Society for Behavioral Development, Bern, Switzerland, in July 1998, and at the Amer­ ican Psychological Association conference "New Methods for the of Change," Pennsylvania State University, in October 1998. This research was supported by Grants AG02695, AG04704, and AG07137 from the National Institute on Agi...

BACKGROUND Among the main data-analytical advances of recent decades are Latent Growth Models (LGM) and Multilevel Models (MLM) for the analysis of longitudinal data. OBJECTIVE We discuss the relative advantages and disadvantages of the two analytical methods and offer some practical guidelines concerning the choice between LGM and MLM based on (a). completeness and balance of the data, (b). ...

A 3D finite element (FE) analysis technique using ABAQUS is chosen to explore the dynamic behavior of a beam under impact load. A beam, for which the impact dynamic test was conducted by Kishi (2004), is selected to develop a solid element FE model. FE analyses were performed implementing ABAQUS Explicit (2004) programming tool to predict the dynamic responses under the pressure amplitude intro...

A beam-column element based on the Euler-Bernoulli beam theory is researched for nonlinear dynamic analysis of reinforced concrete (RC) structural element. Stiffness matrix of this element is obtained by using rigidity method. A solution technique that included nonlinear dynamic substructure procedure is developed for dynamic analyses of RC frames. A predicted-corrected form of the Bossak-α met...

Reverse engineering based on dynamic analyses often uses method traces of the program under analysis. Recording all method traces during a program’s execution produces too much data, though for most analyses, a “slice” of all method traces is sufficient. In this paper, we present an approach to collect runtime information by selectively recording method calls during a program’s execution. Only ...