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The Georgia Institute of Technology has been a catalyst for economic growth in the Southeast United States since its founding in 1885. Over the past 30 years, it has become known as one of the top technological universities in the world. As part of a strategic planning effort in mid-2009, it sought to strengthen its thought leadership and impact through the implementation of a global innovation ecosystem strategy. The Institute serves as the integrating focus within its region to promote disruptive thought, use-inspired research, experimentation, and accelerated implementation through novel educational, research, and industry partnership programmes. Since 2009, there has been a marked increase in economic development impact. This paper describes an implementation of a system-focused strategy for a regional innovation ecosystem in the Southeast United States, a research methodology for its continuous improvement and assessment with results and analysis over a multi-year period, and lessons learned. It postulates necessary ecologic, economic, and societal attributes for an innovation ecosystem, illustrates how these attributes are the basis for success within the region, and describes how this is a basis for extension to its affiliated programmes in France. [ABSTRACT FROM AUTHOR]

An inverse method based on the wavelet transform (WT) and artificial neural networks (ANN) is presented to recover the elastic constants of an orthotropic plate from laser-based ultrasonic Lamb waves. The transient waveforms obtained by numerical simulations under different elastic constants are used as input of the ANN for training and learning. The WT is used for extracting the eigen-vectors from the raw Lamb wave signals to simplify the structure of the ANN. [ABSTRACT FROM AUTHOR]

An effective method for analyzing quantitatively mode distribution of laser-generated Lamb waveforms in a fiber reinforced composite plate is presented by using the Wigner distribution (WD). The carrying energy of each mode in the waveforms is calculated quantitatively by employing time-frequency filtering technique of the WD. We found that energy conversions among modes have happened in the process of propagation of Lamb waves. These energy conversions are attributed to microstructure scattering of ultrasonic wave by the fibers in fiber reinforced composite material. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR]