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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 415 records · Page 23

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NASA NTRS2001

Experiments on the evolution of digital to analog converters

Currently, there is a research effort in Evolvable Hardware being driven towards two purposes: the synthesis of circuits of medium to high complexity; and the design of reconfigurable architectures that facilitate the system evolvability and on-chip implementation of the evolved circuits. This work addresses these issues by describing the evolution of Digital to Analog Converters (DACs).

DACs evolvable hardware hierarchical evolution gen↗

NASA NTRS2001

Polymorphic electronics

This paper introduces the concept of polymorphic electronics (polytronics)- referring to electronics with superimposed built-in functionality.

evolvable hardware genetic algorithms FPTA polytro↗

NASA NTRS2001

Initial experiments of reconfigurable sensor adapted by evolution

In this paper we describe the initial development of efficient mechanisms for smart sensing which will lead to higher quality data.

evolvable hardware sensors genetic algorithms↗

NASA NTRS2000

Automatic Synthesis and Fault-tolerant Experiments on an Evolvable Hardware Platform

Outer solar system exploration and missions to comets and planets with severe environmental conditions require long-term survivability of space systems. This challenge has recently been approached with new ideas, such as using mechanisms for hardware adaptation inspired from biology.

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS2000

Developpment of a 3-D Nanoelectronic Modeling Tool - NEMO-3D

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nanoelectronic nanotechnology hetero structures ge↗

NASA NTRS2000

A Flexible Model of a CMOS Field Programmable Transistor Array Targeted for Hardware Evolution

This article focuses on the properties of a fine grained reconfigurable transistor array currently under test at the Jet Propulsion Laboratory (JPL).

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS2000

Mixtrinsic Evolution

This paper introduces a third approach to Evolvable Hardware (EHW) called mixtrinsic EHW (MEHW).

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS2000

The Design Process of an Evolutionary Oriented Reconfigurable Architecture

This paper describes the design of a reconfigurable chip programmable at the transistor level and oriented to the implementation of Evolvable Hardware (EHW) experiements.

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS2000

Evolution of Analog Circuits on Field Programmable Transistor Arrays

Evolvable Hardware (EHW) refers to HW design and self-reconfiguration using evolutionary/genetic mechanisms. The paper presents an overview of some key concepts of EHW, describing also a set of selected applications.

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS2000

Evolvable hardware for extreme environments: expanding device operational envelope through adaptive reconfiguration

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evolvable hardware genetic algorithms extreme temp↗

NASA NTRS2000

Fault tolerant approaches based on evolvable hardware and using reconfigurable electronic devices

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evolvable hardware reconfigurable hardware genetic↗

NASA NTRS2000

Evolutionary mechanisms for smart on-board adaptive sensing applied to the MECA electrometer

In this paper we describe the initial development of efficient mechanisms for smart on-board adaptive sensing, adaptively controlling the reconfigurable pre-processing analog electronics using evolvable hardware, which will lead to higher quality, lean data.

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS1999

Simulator Development for Nanoelectronic Devices

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simulation nanoelectronics resonant tunneling diod↗

NASA NTRS1997

Designing Dielectric Grating Filters with PGAPACK

The chapter is concerned with the design of planar dielectric layer diffraction gratings, which exhibit sharp resonances due to the coupling of exterior evanescent diffractive fields to the leaky modes of dielectric waveguides.

genetic algorithms↗

NASA NTRS1999

Evolution of CMOS Circuits in Simulations and Directly in Hardware on a Programmable Chip

The paper introduces an approach to automated synthesis of CMOS circuits, based on evolution on a Programmable Transistor Array (PTA).

evolvable hardware reconfigurable hardware genetic↗

NASA NTRS1998

Nanoelectronic Modeling at JPL

The NASA/JPL goal to reduce payload in future space missions while increasing mission capability demands miniaturization of measurement, analytical and communication systems.

Nanoelectronic Modeling RTD Genetic Algorithm NEMO↗

NASA NTRS2001

Optimal adaptive performance and delocalization in NK landscapes

We investigate the evolutionary dynamics of a finite population of sequences adapting to NK fitness landscapes.

simulation evolution adaptaion genetic algorithms↗

NASA NTRS2004

Evolutionary computing for the design search and optimization of space vehicle power subsystems

Evolutionary computing has proven to be a straightforward and robust approach for optimizing a wide range of difficult analysis and design problems. This paper discusses the application of these techniques to an existing space vehicle power subsystem resource and performance analysis simulation in a parallel processing environment.

evolutionary computing genetic algorithms optimiza↗