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Briefs: Software
Software Helps Retrieve Information Relevant to the User
The Adaptive Indexing and Retrieval Agent (ARNIE) is a code library, designed to be used by an application program, that assists human users in retrieving desired information in a hypertext setting. Using ARNIE, the program implements a comp- utational model for interactively learning what...
Briefs: Electronics & Computers
The new high-speed interconnect standards will dramatically change the way computer and communication systems are designed. Switch- based systems will be the winners in new high-performance designs,...
Briefs: Software
Software for Diagnosis of Multiple Coordinated Spacecraft
Distributed Real-Time Model-Based Diagnosis (DRMD) is a computer program for diagnosing faults in multiple spacecraft cooperating in a specific task (e.g., flying in formation to constitute an inter- ferometer). DRMD takes advantage of both (1) the superiority of model-based software for...
Briefs: Software
Software for Refining or Coarsening Computational Grids
A computer program performs calculations for refinement or coarsening of computational grids of the type called “structured” (signifying that they are geo- metrically regular and/or are specified by relatively simple algebraic expressions).
This program is designed to facilitate analysis...
Briefs: Electronics & Computers
A computer-based simulation system creates a visual and haptic virtual environment for training a medical practitioner in laparoscopic surgery. Heretofore, it has been common practice to...
Briefs: Software
Software For Displaying Data From Planetary Rovers
Science Activity Planner (SAP) DownlinkBrowser is a computer program that assists in the visualization of processed telemetric data [principally images, image cubes (that is, multispectral images), and spectra] that have been transmitted to Earth from exploratory robotic vehicles (rovers) on remote...
Briefs: Electronics & Computers
The designs of microscopic toroidalcore inductors in integrated circuits of DC-to-DC voltage converters would be modified, according to a proposal, by filling the gaps in the cores with...
Briefs: Electronics & Computers
Improved autoassociative neural networks, denoted nexi, have been proposed for use in controlling autonomous robots, including mobile exploratory robots of the biomorphic type. In comparison with...
Briefs: Lighting
A unique safety flasher powered by photovoltaic cells and ultracapacitors has been developed. Safety flashers are used wherever there are needs to mark actually or potentially hazardous...
Briefs: Mechanical & Fluid Systems
Continuous Tuning and Calibration of Vibratory Gyroscopes
A method of control and operation of an inertial reference unit (IRU) based on vibratory gyroscopes provides for continuously repeated cycles of tuning and calibration. The method is intended especially for application to an IRU containing vibratory gyroscopes that are integral parts of...
Briefs: Mechanical & Fluid Systems
The Morrison rotor, named after its inventor, is a hybrid rotor for use in a bearingless switched-reluctance electric motor. The motor is characterized as bearingless in the sense that it does not...
Briefs: Photonics/Optics
A proposed method of suppressing the effect of background noise in an optical communication system would exploit the transmission and reception of correlated photons at the receiver. The...
Briefs: Mechanical & Fluid Systems
An improved method of calibrating a wind-tunnel force balance involves the use of a unique load application system integrated with formal experimental design methodology. The Single-Vector...
Briefs: Photonics/Optics
Curved-focal-plane arrays of back-illuminated silicon-based photodetectors are being developed. The basic idea is to improve the performance of an imaging instrument...
Briefs: Mechanical & Fluid Systems
The figure depicts a micromachined silicon vibratory gyroscope that senses rotation about its z axis. The rotation-sensitive vibratory element is a post oriented (when at equilibrium)...
Briefs: Mechanical & Fluid Systems
A modified design and fabrication sequence has been devised to improve the performance of a cloverleaf vibratory microgyroscope that includes an axial rod or post rigidly attached to the...
Briefs: Photonics/Optics
ICCD Camera Enables PLIF Technique for Fuel Visualization in Engines
Large-bore, slow-speed, natural gas two-stoke cycle engines used for power generation and gas compression on natural gas pipelines suffer from poor in-cylinder mixing processes caused by ineffective fuel delivery, which can increase emissions and create low engine efficiency...
Briefs: Photonics/Optics
Briefs: Photonics/Optics
Because the hardware interfaces of IR cameras change frequently, this infrared (IR) camera software suite (RTools™) consists of a set of stand-alone, executable modules...
Briefs: Photonics/Optics
Scanning tunneling optical resonance microscopy (STORM) is a method, now undergoing development, for measuring optoelectronic properties of materials and devices on the nanoscale by means of a...
Briefs: Photonics/Optics
The Micro-Arcsecond Metrology (MAM) testbed is a ground-based system of optical and electronic equipment for testing components, systems, and engineering concepts for the Space Interferometer Mission (SIM)...
Briefs: Information Technology
Finite-Element Methods for Real-Time Simulation of Surgery
Two finite-element methods have been developed for mathematical modeling of the time-dependent behaviors of deformable objects and, more specifically, the mechanical responses of soft tissues and organs in contact with surgical tools. These methods may afford the computational efficiency...
Briefs: Information Technology
Detecting Moving Targets by Use of Soliton Resonances
A proposed method of detecting moving targets in scenes that include cluttered or noisy backgrounds is based on a soliton-resonance mathematical model. The model is derived from asymptotic solutions of the cubic Schroedinger equation for a one-dimensional system excited by a position-and-time-...
Briefs: Aerospace
The F-15 Advanced Controls Technology for Integrated Vehicles (ACTIVE) airplane (see figure) was the test bed for a flight test of an intelligent flight control system (IFCS). This IFCS...
Briefs: Physical Sciences
The figure shows a fixture for measuring the tensile strength of the bond between an aluminum substrate and a thermally insulating polymeric foam. The specimen is meant to be...
Briefs: Physical Sciences
Slat heater boxes have been invented for controlling the sink temperatures of objects under test in a thermal vacuum chamber, the walls of which are cooled to the temperature of liquid nitrogen. A...
Briefs: Physical Sciences
Langley Research Center has developed electrical- impedance- based icethickness gauges and is seeking partners and collaborators to commercialize them. When used as parts of active monitoring and...
Briefs: Physical Sciences
An apparatus and method have been developed for measuring the rates of leakage of heat into pipes carrying liquids, the purpose of the measurements being to quantify the thermal performance of the...
Briefs: Medical
Fluorescent Quantum Dots for Biological Labeling
Fluorescent semiconductor quantum dots that can serve as "on/off" labels for bacteria and other living cells are undergoing development. The "on/off" characterization of these quantum dots refers to the fact that, when properly designed and manufactured, they do not fluoresce until and unless they...
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Webcasts
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Scaling SDV Development with Virtualization
Webinars: Electronics & Computers
Why Your Motor Behaves Badly: See BLDC Control Signals, Power,...
Webinars: Manufacturing & Prototyping
From Spec to Scale: High-Precision Grinding Strategies for...
Editorial Webinars: Defense
High-Speed Connectivity for Next Generation Aerospace & Defense...
Webinars: Automotive
Electronics Digital Twins: From Concept to Scalable Platform
Webinars: Transportation
Architecting the Future: Why Systems Engineering is the Backbone...
