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Briefs Medical
High-Resolution Anatomic and Elastographic Transrectal Ultrasound for Improved Diagnosis of Prostate Cancer
Prostate cancer screening generally uses the Pro state Spe cific Antigen (PSA) blood test, free-PSA testing, and Digital Rectal Exam...
Briefs Software
Software Suite for a Large Defense System
A suite of software tools was developed to enable networks composed of many hundreds, thousands, or even millions of commodity computers to protect themselves against a variety of security threats. These tools include Anagram, a content-based anomaly detection (AD) tool; ASSURE, which provides automatic...
Briefs Software
Virtual Network Computing Software for DataWall Remote Display
VNC (Virtual Network Computing) is open-source software that allows a user to view and interact with a remote computer (known as the VNC server) from a local computer (known as the VNC viewer/client). VNC is used to display multiple remote desktops on the DataWall. The original VNC...
Briefs Physical Sciences
Reducing Thicknesses of PbZrₓTi₁₋ₓO₃ Films in Capacitors
A document describes experiments performed to determine effects of reducing the thicknesses of films of lead zirconate titanate (PbZrxTi1-xO3, wherein 0<x<1) used as ferroelectric dielectric layers in some capacitors. The fabrication of specimen capacitors for the experiments...
Briefs Photonics/Optics
MEMS-Based Optical Limiter
Protecting optical sensors and detectors against excessive input signals is not only important for dealing with unintentional overloads, but also central for protecting sensors against intentional high-intensity...
Briefs Physical Sciences
Advanced Lithium Ion Systems for Military Vehicles
The higher energy and power density of Li-Ion battery technology offers a significant reduction in the weight and volume for hybrid electric vehicle (HEV) battery systems compared to lead acid and nickel metal hydride technologies. Saft’s High Power Li-ion battery technology has demonstrated...
Briefs Manufacturing & Prototyping
Manufacturing Cylindrical Parts Using Deep Draw Technology
In applications where product performance is mission critical, commercial, military, and aerospace companies require technology to manufacture deep- drawn cylindrical product...
Briefs Mechanical & Fluid Systems
Using a Steering Shaping Function to Improve Human Performance in By-Wire Vehicles
Currently, there is a performance issue regarding vehicle control at higher speeds for some indirect-vision, by-wire military vehicles; that is, those vehicles...
Briefs Materials
Wettability Tests of Polymer Films and Fabrics
High-strength polymer materials are useful components in many multifunctional materials applications. However, because of low reactivity, their use is inhibited in many processing techniques....
Briefs Electronics & Computers
Automated Data Acquisition for a Prognostics and Diagnostics Health Monitoring System
A highly flexible automated prognostics and diagnostics sensor module (PDSM) prototype is presently under development to be incorporated for data acquisition...
Briefs Physical Sciences
Detector Module for Testing Silicon Carbide Semiconductor Devices
Long-term stress testing of silicon carbide (SiC) semiconductor devices is required to determine suitability for power electronics applications. During testing, preventable...
Briefs Sensors/Data Acquisition
Microfabrication and Testing of a Thermoelectric Device for Generating Mobile Electrical Power
Several attractive features of thermo-electric (TE) technology include no moving parts, light weight, modularity, covertness, silence, high power...
Briefs Physical Sciences
Imaging and Spectral Measurements of Explosions
A document describes experiments performed to investigate rates of delivery of energy onto targets from different explosive formulations. The experiments were designed to measure relative positions of blast fireballs and leading shock fronts; determine whether different explosive formulations exhibit...
Briefs Electronics & Computers
Considerations of Aeroacoustics in Turbojet-Engine Testing
A study of the aeroacoustics of a turbojet-engine test cell has been performed as one step in the development of a computational aeroacoustics capability (CAA) that could provide...
Briefs Physical Sciences
Measurement of Transient Heat Flux and Surface Temperature Using Embedded Temperature Sensors
A report describes approximate solutions for surface temperature and heat flux for two embedded temperature sensors. The solutions were verified and the range of validity was established using several methods including comparisons with an exact analytical...
Briefs Photonics/Optics
Photon-Counting Chirped Amplitude Modulation Ladar
This work is a follow-on to an effort to develop a method using Geiger-mode avalanche photodiode (GM-APD) photon-counting detectors in the U.S. Army Research Laboratory’s chirped amplitude...
Briefs Electronics & Computers
Polypeptide-Based Molecular Electronics
Polypeptide supramolecules that will self assemble from solution and will form molecular wires that exploit quantum mechanical transport mechanisms can enable the formation of molecular devices such as...
Briefs Manufacturing & Prototyping
Fabricating Biologically Inspired Artificial Haircell Sensors
As electronics packaging and equipment have decreased in size and weight, so have the potential dimensions of unmanned aircraft. Specifically, a classification of micro air vehicles...
Briefs Sensors/Data Acquisition
Tightly Coupled INS, GPS, and Imaging Sensors for Precision Geolocation
To address the issue of poor georegistration performance for small unmanned aerial vehicles (UAVs), navigation and target-location accuracy improvements achievable by tightly integrating an image-based feature-tracking algorithm with Global Positioning System (GPS) and a...
Briefs Mechanical & Fluid Systems
Sensing for Controls and Propulsion Health Management in Turbine Engines
Advances in engine performance and reliability require sensor components that operate reliably under extreme engine operating conditions (e.g., takeoff, max thrust) and in...
Briefs Electronics & Computers
Heterogeneous System-on-a-Chip for Self-Powered Wireless Sensor Networks
A new dimension of system architecture design is emerging where hundreds to thousands of ultralight (
Briefs Information Technology
Next-Generation Information Systems Architectures
A document describes a paradigm in which low-altitude unmanned aerial vehicles (UAVs) with wireless communication capability are used to assist networking among a set of ground stations. This new paradigm is attractive because UAVs can be dynamically deployed in a wide variety of geographical...
Briefs Information Technology
Study of Submodeling of a Small Component in a Structure
A study was performed to evaluate the accuracy achievable in the use of submodeling in finite-element modeling of the mechanical response of a structural system that includes components...
Briefs Physical Sciences
Simulation of Airflow Through a Test Chamber
A computational-simulation study of the flow of air through a thermo-anemometer chamber was performed to resolve what originally seemed to be an anomaly in the measurement data obtained by use of the...
Briefs Physical Sciences
Acceleration Strain Transducer Containing Cantilever Flaps
A recently invented acceleration strain transducer is based on the principle of a conventional spring-and-mass acceleration transducer combined with a linear strain sensor that measures...
Briefs Physical Sciences
Studies of Dynamic Fracture in Brittle Materials
A program of research spanning several years ending in November 2005 was dedicated primarily to formulation and analysis of canonical boundary- value problems in mathematical modeling of dynamic fracture in brittle materials. The sub-topics within the broad topic of dynamic fracture in brittle...
Briefs Sensors/Data Acquisition
Miniature Rotorcraft Flight Control Stabilization System
Autonomous rotorcraft provide improved capability in performing military missions such as reconnaissance, targeting, border patrol, and environmental sensing. A common difficulty in...
Briefs Mechanical & Fluid Systems
Axial Field Electric Motor
An axial field electric motor comprises one or more elements such as a rotor mounted for rotation and multiple axial flux permanent magnets carried by the rotor. The axial flux permanent magnets are oriented such that...
Briefs Mechanical & Fluid Systems
Water Mist System for Shipboard Machinery Space Fires
Water mist has been determined to be a preferred alternative to Halon 1301 total flooding to extinguish fires occurring in ship machinery spaces and pump rooms, because it is toxicologically...
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