Award Data

ABSTRACT: ADI and ASU propose to develop a novel methodology for blade peak stress prediction from limited strain gage/tip-timing measurements when multiple vibratory modes are present. The current protocol assumes that only one mode is present and only provides upper and lower bound estimates of the blade peak stress when multiple modes are important. It is proposed here to construct the blade m ...

ABSTRACT: In the future, numerous military database, documentation, and mission-critical information systems will be migrated to the clouds, due to cloud cost-efficiency and accessing flexibility. However, the cloud servers are generally untrusted either for data owners or users. In this proposal, A3IS (Attribute-based Algorithms for Assured Information Sharing) is proposed for dynamically and se ...

ABSTRACT: This Phase I SBIR will produce a concept, and algorithms, for a Sensor Suite which can be used as a research tool to characterize strong atmospheric turbulence. Previous and on-going theories, statistics, and empirical data will be evaluated to arrive at an optimal Sensor design concept. That Sensor may exploit the superior resolution and performance inherent in the Radio-Hydro-Physi ...

Accelerators used for nuclear-physics research require megawatts of radio-frequency energy. They currently employ vacuum-tube power amplifiers or conventional solid-state amplifiers that are inefficient and therefore consume a great deal of prime power. Many other applications including semiconductor processing, cellular-telephone base station transmitters and military communication systems simila ...

Accelerators used for nuclear-physics research require megawatts of radio-frequency energy. They currently employ vacuum-tube power amplifiers or conventional solid-state amplifiers that areinefficient and therefore consume a great deal of prime power. Many other applications including semiconductor processing, cellular-telephone base station transmitters and military communication systems similar ...

Conventional indoor environmental monitoring technologies are expensive, cumbersome to install and maintain, and do not provide the distributed granularity required to capture the necessary details for efficient energy management of commercial buildings. Developments in wireless sensor networks (WSN) provide substantial framework for monitoring and addressing indoor environments at scale. However ...

MSP is introducing in this proposal a practical approach to a family of cascade impactors capable of real-time measurement of the size-distributed mass concentration of particles in the atmosphere. Further, because of the high sensitivity of the proposed mass transducers, these impactors will also provide nearly instantaneous information about the influence of water vapor on the size distribution ...

Photocathodes with spin-polarized electron emission are used in physics research. Current photocathodes offer high polarization, but low total currents, and have limited lifetime. Research involving these polarized electrons would be more productive if a higher electron current were provided. This program seeks to increase the delivered polarized electron current from the photocathodes by adding i ...

For several decades photomultiplier tubes (PMTs) have been the main technology for sensitive and low noise detection of photons in many high energy physics experiments. However, compared to solid-state photodetectors, PMTs are bulky, fragile, expensive, and need to be shielded from high magnetic fields and high pressures, which severely limit their application for future DOE projects. Hence, th ...

The negative-electron-affinity (NEA) photocathodes which produce polarized electrons are a vital component of electron accelerators such as that at the Stanford Linear Accelerator Center (SLAC). Future systems, such as the International Linear Collider (ILC), will require a polarized electron beam intensity at least 20 times greater than produced by strained GaAs, which is used in the current gene ...