Latest Stories
Briefs Information Technology
Evolvable Approaches to Software Verification and Validation
Research was conducted to integrate and advance current techniques in compilers, hardware architectures, and security to develop novel techniques to protect against physical attacks on encrypted embedded systems. The innovation in the approach was in exploiting the power of integrated...
Briefs Physical Sciences
Frangible Polymer Circuit Acts as Tamper Sensor
Originally begun as an investigation to detect attempts to tap into an electrical cable, the emergence of modern encryption hardware rendered impractical attempts to protect communication media...
Briefs Electronics & Computers
Cooperative Single-Antenna Node Networks
Future tactical networks will be complex, with severe constraints on energy and bandwidth, operating in dynamic and unpredictable environments. By exploiting the broadcast nature of the wireless medium and spatially dispersed nodes, some of these advantages can be realized through cooperation among...
Briefs Electronics & Computers
Dynamics of Epitaxy on Nano-Sized Semiconductor Surfaces
Semiconductor self-assembled quantum dots (QDs) have emerged as one of the simplest subjects for exploring and exploiting the physics and device applications of charge carriers and...
Briefs Data Acquisition
Multi-Agent Software for Airspace Control in the Combat Zone
AGENTFLY software is part of a computer-based system technology that will enhance airspace operation, providing ever-increasing support to personnel without freeing them from the ultimate responsibility. AGENTFLY features distributed coordination mechanisms based on collective...
Briefs Materials
Multifunctional Properties of Structural Gel Electrolytes
Due to the demand for more advanced and lightweight systems, multifunctional composite structures that can function as electrochemical energy converters, while bearing mechanical load, are in development. This research involves a materials-based approach in which each component of the system...
Briefs Information Technology
Method for Detecting Planar Surfaces in Outdoor Urban Environments
The ability to detect and recognize buildings is important to a variety of vision applications operating in outdoor urban environments. These include landmark recognition,...
Briefs Physical Sciences
Characterizing Turbulent Wind Flow Near a Wind Barrier Using Sonic Anemometers
The Holloman High Speed Test Track (HHSTT) facility at Holloman Air Force Base (HAFB), NM, has a test section of 1.8 km that contains an artificial rain field...
Briefs Software
Medical Information Network Decision Support System
In order to facilitate a more rapid and systematic transfer of new medical knowledge and capabilities into mainstream clinical practice, a new Medical Information Network Decision Support (MINDS) system has been proposed. This system is intended to be a platform for storing and fusing medical data...
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 Sensors/Data Acquisition
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...
Top Stories
NewsRF & Microwave Electronics
Microvision Aquires Luminar, Plans Relationship Restoration, Multi-industry Push
INSIDERAerospace
A Next Generation Helmet System for Navy Pilots
INSIDERDesign
New Raytheon and Lockheed Martin Agreements Expand Missile Defense Production
INSIDERMaterials
How Airbus is Using w-DED to 3D Print Larger Titanium Airplane Parts
NewsPower
Ford Announces 48-Volt Architecture for Future Electric Truck
ArticlesAR/AI
Webcasts
Aerospace
Cooling a New Generation of Aerospace and Defense Embedded...
Automotive
Battery Abuse Testing: Pushing to Failure
Transportation
A FREE Two-Day Event Dedicated to Connected Mobility
Unmanned Systems
Quiet, Please: NVH Improvement Opportunities in the Early Design Cycle
Transportation
Advantages of Smart Power Distribution Unit Design for Automotive &...
Energy
Sesame Solar's Nanogrid Tech Promises Major Gains in Drone Endurance