Award Data

The TAU Performance System is a powerful and highly versatile profiling and tracing tool ecosystem for performance analysis of parallel programs. Developed over the last 15 years, TAU has evolved with each new generation of HPC systems and scales efficiently to hundreds of thousands of cores on the largest computers in the world. TAUs organic growth has resulted in a loosely coupled potpourri of ...

Many contaminated DOE sites are located in arid regions where depth to groundwater is significant and/or contaminants were discharged into a vadose zone through which transport to the groundwater table is dominated by unsteady, unsaturated groundwater flow. The absence of an effective means to monitor vadose zone moisture content in profile has been a persistent impediment to developing and calibr ...

The U.S. Arctic continues to be one of the most difficult places on Earth for year-round scientific observations and research, and ice sheet and sea level changes have been explicitly identified as a current priority in the Presidents Climate Change Science Program, the Arctic Climate Impact Assessment, the 4th Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), and other na ...

Megapixel-class imaging systems with single-photon sensitivity, high time resolution (sub-ns), and the capabilities to detect and process photons at high rates (above 108 detected photons per second) are highly desirable for a number of DOE, homeland security, national defense, and nuclear medicine applications. The event timing resolution largely depends on the specific application, but can rang ...

SiPMs have received significant investigation over recent years, because they offer potential as a solid-state single- photon-sensitive alternative to photomultipliers (PMTs), but their performance does not meet the needs of science, and there are no commercial fabs capable of manufacturing them at low cost. An important feature of SiPM technology is that it is possible to integrate the electron ...

Inspired Light is developing a high-efficiency Concentrating Photovoltaic (CPV) system that requires accurate, 2-axis tracking. Available tracking systems are too large, expensive and require specialized setup procedures that are incompatible with a very low cost, versatile deployment strategy. This project will develop and demonstrate feasibility of a self-configuring solar tracking mechanism an ...

Increased use of Exhaust Gas Recirculation (EGR) combined with engine downsizing has pushed automotive turbocharger compressor operation towards and often beyond its efficient and stable operating boundaries. Much of the drive cycle is spent operating the compressor at low flow rates and low pressure ratios, near the compressor surge line, in an area which is usually of low efficiency. Our prelimi ...

In this Phase I STTR proposal we will determine the ruggedness of the genetic immunization technique in the production of duck egg derived immunoglobulin; specifically the natural F(ab")2 analog, IgY^Fc. We have already demonstrated that potently neutralizing duck egg antibodies generated with an early candidate Andes virus DNA vaccine, delivered via intramuscular electroporation, can protect afte ...

Intelligent tutoring systems (ITS) are complex adaptive learning systems that simulate one-on-one tutoring. Research shows they improve learning and reduce time to mastery. Unfortunately, they are also expensive and time-consuming to produce. Existing IT authoring tools eliminate low level programming but require that domain models, expert models and content be created manually. In Phase I of t ...

This proposal outlines a project aimed at providing a radical improvement in ion source technology that can be applied to the mass spectrometric analysis of actinides. The state-of-the-art secondary ion mass spectrometers (SIMS) employ the duoplasmatron ion source to create the primary ion beam for actinide analysis. The duoplasmatron only has sufficient brightness and a small enough energy spre ...