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Briefs Materials
Mechanical Response of an Al-PTFE Composite to Uniaxial Compression Over a Range of Strain Rates and Temperatures
Reactive materials can be loosely categorized as composites of inert solid materials which, when subjected to a violent mechanical...
Briefs Materials
Polymer Matrix Composite Materials for a Structural Multifunctional Fuel Cell
A structural multifunctional fuel cell design enables material elements participating in power or energy processes to also carry significant structural loads. Power...
Briefs Electronics & Computers
Implementing On-Board Cloud Detection on a Reconfigurable Computer
Reconfigurable Computers (RCs) combine traditional microprocessors with field programmable gate arrays (FPGAs), and are characterized by lower form/wrap factors compared to...
Briefs Electronics & Computers
Using High-Performance Computing Clusters to Support Fine-Grained Parallel Applications
A heterogeneous cluster comprised of host processors and field programmable gate arrays (FPGAs) was used to accelerate the performance of parallel...
Briefs Electronics & Computers
Asynchronous Architectures for Large-Integer Processors
New architectures have been developed for cryptographic hardware that offer high throughput, algorithm flexibility, radiation hardness, and low power. The asynchronous (clockless) architecture combines a dedicated large-integer processor (LIP), a field programmable gate array (FPGA), and a...
Briefs Electronics & Computers
Evaluation of Four Methods of Reconfiguring an FPGA
A study was performed to evaluate the relative merits of four methods of reconfiguring a field-programmable gate array (FPGA) in response to detection of a faulty configurable logic block...
Briefs Information Technology
A Formal Model of the Attack Surface of a Software System
A formal model has been devised to impart some mathematical rigor to the concept of the attack surface of a software system. Complementing the model is a definition of a quantitative...
Briefs Information Technology
Infrastructure for Development of Secure, Reliable Software
The Verification and Automated Reasoning research group at Cornell University has been building an infrastructure, comprising human expertise and computational resources, for the development of secure, reliable software for critical military applications. Such software includes distributed...
Briefs Physical Sciences
Synthesizing Pseudo-Finer-Resolution MODIS Data Products
A document discusses a methodology for synthesizing finerresolution data products from outputs of the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments aboard NASA's Terra and Aqua satellites. Typical MODIS ocean color data have 1-km resolution, but those in five wavelength...
Briefs Physical Sciences
Two-Camera Imaging System for Kinematic Measurements
A high-speed imaging system has been devised as a noninvasive means of collecting data on the kinematics of working models of developmental underwater or aerial vehicles that would utilize...
Briefs Sensors/Data Acquisition
Characterization of a MEMS Directional Sound Sensor
There is a wide range of potential military applications in which ambiguity in bearing occurs with respect to sound. For example, autonomous unmanned aerial vehicles (UAVs) could employ a...
Briefs Medical
Genetic Studies of Responses of Bones to Mechanical Stresses
Progress has been reported in a continuing program of molecular genetic studies of the responses of bones to mechanical stresses. Prior studies in mice and humans had provided evidence that mechanical loading stimulates bone formation and that immobilization or loss of mechanical...
Briefs Medical
Macromolecular Carriers for Nanomedicine and Nano Devices
Tailoring the surface properties of biodegradable nanospheres and microspheres for in-vivo blood-contacting applications includes defining relationships among chemical composition, processing parameters, nanosphere sizes and size distributions, and surface structure. Developments include: 1)...
Briefs Materials
Fluidic Flexible Matrix Composites for Autonomous Structural Tailoring
In previous research, a high-mechanical- advantage actuator system inspired by the fibrillar networks in plant cell walls was developed. One of the basic elements in the...
Briefs Software
Software Optimizes Multi-Core Platforms
Perseus is a suite of tools that allows existing x86-based software (in binary form) to be optimized for commodity multi-core platforms. Optimizations are made with respect to both performance (e.g., by avoiding undesirable cache effects) and power consumption (e.g., by modulating frequency and voltage of...
Briefs Photonics/Optics
Lasing Consequences of Silicon Nanostructures
While silicon electronics has been a success in modem technologies, silicon photonics is still in development and in need of a laser source. Many approaches have been explored, from anodized silicon luminescence, to generating direct emissions by quantum-confinement, and to indirect down-conversion of a...
Briefs Photonics/Optics
Advances Toward Affordable High-Energy Laser Modules
A multidisciplinary research project entitled “Affordable High-Energy Lasers” has made numerous contributions to the development of several types of advanced laser modules, including not...
Briefs Photonics/Optics
Evaluation of Performance of WL Fe-Based Spin-LEDs
A study was performed to evaluate the performance of a recently developed type of Fe-based spin-light-emitting diodes (spin-LEDs) that incorporate wetting layers (WLs). [The term "wetting...
Briefs Materials
Cluster-Assembled Soft Magnets for Power Electronics Applications
This technique uses nanocluster assembly to produce model soft magnetic materials with simpler chemical composition than existing materials and well-controlled nanostructure, and...
Briefs Electronics & Computers
High-Voltage, High-Temperature Power Electronics Capacitor
A novel high-temperature, high-voltage power electronics capacitor incorporates materials of construction and electrical components that have been initially designed as a segment of an...
Briefs Electronics & Computers
Fuzzy System for Fault Diagnostics in Power Electronics-Based Brake-by-Wire System
Research in fuzzy diagnostics of brake-by-wire systems focuses on the power electronics switches, since they are often considered to be the weakest link in the...
Briefs Electronics & Computers
AC Coupled Interconnect for Low-Power Spaceborne Electronics
An AC coupled interconnect (ACCI) has been developed that could be used to create multiple solutions to contactless chip-to-chip communications. Assembly and testing of a 0.18 um bulk...
Briefs Electronics & Computers
Emerging Power and Energy Technologies for Portable Electronics
A report discusses data obtained for the Navy's Special Operations Command (SOCOM), which seeks a portable power/energy source capable of providing sufficient power and energy for complex missions at a minimal weight penalty. The report focuses on the specific energy of systems,...
Briefs Information Technology
Explicitly Timed Authorization Logic
A document describes explicitly timed authorization logic (nicknamed "η-logic"). In prior authorization logics, it is, variously, impossible or difficult to handle time explicitly; express security policies that involve complex, time-dependent relationships; or reason accurately about time. By enabling...
Briefs Physical Sciences
Advanced Concepts for Space Access
A paper summarizes commonly proposed advanced launch concepts, including both concepts that employ propellant and propellant-less concepts. A wide range of advanced launch concepts have been proposed in an effort to revolutionize space access through either a significant reduction in launch costs or significant...
Briefs Robotics, Automation & Control
Robot Vision System for Precise Object Retrieval in Unmanned Systems
Automating large-scale material handling systems that involve picking up or retrieving items via cranes or robot arms can yield big benefits, particularly in harsh or...
Briefs Medical
Remote Blood Pressure Waveform Sensing
This non-contact, non-invasive blood pressure apparatus continuously measures and monitors blood pressure using a laser Doppler vibrometer to create waveforms. The laser-based system may be utilized to continuously provide highly detailed information about the timing characteristics of the blood pressure...
Briefs Medical
Tactical Medical Coordination System
The term "tactical medical coordination system" (TacMedCS) denotes any of several prototype electronic systems for tracking patients in a scenario that may involve multiple instances of treatment by...
Briefs Manufacturing & Prototyping
Patterning of Polycrystalline Bi2Te3 Thin Films on Silicon
Experiments in patterning of thin films of polycrystalline bismuth telluride (Bi2Te3) on silicon substrates have been performed. Bi2Te3 is representative of a family of thermoelectric...
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