Award Data

Mathematical models of physical and biological systems contain parameters that need to be estimated from measured data. Models with parameters distributed probabilistically require the estimates of a probability measure over the set of admissible parameters. We propose to use frequentist-based approaches for non-parametrically estimating probability measures that describe the distribution of par ...

ABSTRACT: Stability phenomena that are of vital interest in liquid rocket motor development involve a confluence of diverse physics and interactions across many system components. Any comprehensive, self-consistent numerical model is burdened by a very large computational mesh, stiff unsteady processes which limit permissible time step, and the need to perform tedious, repeated calculations for a ...

Recent times have witnessed enormous advances in high fidelity modeling of electromagnetic (EM) phenomena in the time-domain. To make such simulations tractable, the computational region must be truncated in a manner allowing outgoing waves to leave with minimal reflection from the boundary. HyPerComp Inc., in collaboration with Prof. Thomas Hagstrom of the Southern Methodist University (Dallas, T ...

Pressure gain combustion (PGC) offers means to a more efficient energy use in propulsion and power generation devices. Integrating PGC concepts in gas turbine engines often results in highly unsteady flow conditions at turbine inlet. Further, the backpres

The NAVY solicits new non-destructive inspection (NDI) methods to address detection and evaluation of kissing bonds and bondline integrity in aerospace composites since no currently accepted standard exists. In response AS & T Inc. propose, the Conformal Array Laser Imager for Bondline Evaluation and Repair (CALIBER), designed expressly for this purpose. The novelty of the proposed approach lies i ...

Approximately 5-6% of military injuries involve some form of major peripheral nerve injury with little chance of spontaneous healing. Currently these injuries lead to major impairment of voluntary muscle function in the limbs and extremities, making tasks of walking, reaching, grasping, etc. very difficult or impossible for many patients. It is not enough to focus therapeutic treatment on the se ...

Decontamination of chemical and biological threats demands a very reactive solution. It is ideal to generate the decontaminants on-site: the activated decontaminant is highly reactive and quickly destroys chemical and biological warfare agents; prior to activation the ingredients can be safely stored for years, shipped, and handled. TDA's electrochemical decontamination (eClO2) technology u ...

This STTR Phase I project aims to design, implement, and demonstrate a rigorous, practical, fast, and re-usable anisotropic mesh adaptation software module for enabling the efficient computation of high Reynolds number flows in large computational domains. To this effect, it focuses on developing: (a) a set of portable and cache-friendly dynamic data structures that ease the implementation in a hy ...

ABSTRACT: The U.S. Air Force has a need to develop a new class of advanced, wide field of view (WFOV) imaging sensors that sample the radiation field in multiple modes: spectral, temporal, polarization, and detailed object shape. These multimodal sensors are to be deployed on high altitude drones to enhance their intelligence, surveillance, and reconnaissance (ISR) capabilities. Smaller versio ...

ABSTRACT: Physical infrastructure is faced with a variety of security challenges including malicious insiders, hackers, and threats present within the supply chain. Hardware, sensors, and software residing in these environments may be captured or compromised by an adversary for the purpose of attacking or disrupting operations. Recent examples of attacks on such infrastructure can be found in Fla ...