5,852 research outputs found
Application of advanced on-board processing concepts to future satellite communications systems: Bibliography
Abstracts are presented of a literature survey of reports concerning the application of signal processing concepts. Approximately 300 references are included
Design and develop a MOS magnetic memory Final report, 11 Mar. - 11 Sep. 1966
Interface problems between plated wire magnetic memory and MO
Utilization of NASA Lewis mobile terminals for the Hermes satellite
The high power of the Hermes satellite enables two-way television and voice communication with small ground terminals. The Portable Earth Terminal (PET) and the Transportable Earth Terminal (TET) were developed and built by NASA-Lewis to provide communications capability to short-term users. The NASA-Lewis mobile terminals are described in terms of vehicles and onboard equipment, as well as operation aspects, including use in the field. The section on demonstrations divides the uses into categories of medicine, education, technology and government. Applications of special interest within each category are briefly described
Visual binding, reentry, and neuronal synchrony in a physically situated brain-based device
By constructing and analyzing a physically
situated brain-based device (i.e. a device
with sensors and actuators whose behavior
is guided by a simulated nervous system),
we show that reentrant connectivity and dynamic
synchronization can provide an effective
mechanism for binding the visual features
of objects
A mathematical model for jet engine combustor pollutant emissions
Mathematical modeling for the description of the origin and disposition of combustion-generated pollutants in gas turbines is presented. A unified model in modular form is proposed which includes kinetics, recirculation, turbulent mixing, multiphase flow effects, swirl and secondary air injection. Subelements of the overall model were applied to data relevant to laboratory reactors and practical combustor configurations. Comparisons between the theory and available data show excellent agreement for basic CO/H2/Air chemical systems. For hydrocarbons the trends are predicted well including higher-than-equilibrium NO levels within the fuel rich regime. Although the need for improved accuracy in fuel rich combustion is indicated, comparisons with actual jet engine data in terms of the effect of combustor-inlet temperature is excellent. In addition, excellent agreement with data is obtained regarding reduced NO emissions with water droplet and steam injection
A Preliminary Study of the Economic Implications From Court Service Delivery Consolidation in Rural Iowa: Phase I Report
This report .is designed-to foster discussion among citizens, leaders and policymakers regarding an important public Issue of concern to lowans. Iowa State University seeks to providie accurate research-based information on relevant issues and neither endorses nor opposes proposals regarding the issues analyzed. The research contained-herein was. conducted with partial, support from^ the Iowa Agriculture and:Home Economics Experiment Station :(TAHEES), the Iowa Cooperative \u27Extension Service ,(CES). and funding frbm local officials in 40 Iowa counties.collected by. Rural. Counties Against Regionalization (RCAR). RCAR funding was solely-used for funding research assistance with the understanding that the goal of the project was to develop objective, information sources for making \u27 \u27 reasonable judgements regarding consolidation issues. The project director expressedly avoided\u27 receiving financial gain from the project so as to prevent conflicts of interest, bias in research, and/or\u27any appearance thereof^
Superdiffusion in the Dissipative Standard Map
We consider transport properties of the chaotic (strange) attractor along
unfolded trajectories of the dissipative standard map. It is shown that the
diffusion process is normal except of the cases when a control parameter is
close to some special values that correspond to the ballistic mode dynamics.
Diffusion near the related crisises is anomalous and non-uniform in time: there
are large time intervals during which the transport is normal or ballistic, or
even superballistic. The anomalous superdiffusion seems to be caused by
stickiness of trajectories to a non-chaotic and nowhere dense invariant Cantor
set that plays a similar role as cantori in Hamiltonian chaos. We provide a
numerical example of such a sticky set. Distribution function on the sticky set
almost coincides with the distribution function (SRB measure) of the chaotic
attractor.Comment: 10 Figure
Statistics of real eigenvalues in Ginibre's Ensemble of random real matrices
The integrable structure of Ginibre's orthogonal ensemble of random matrices is looked at through the prism of the probability pn,k to find exactly k real eigenvalues in the spectrum of an n×n real asymmetric Gaussian random matrix. The exact solution for the probability function pn,k is presented, and its remarkable connection to the theory of symmetric functions is revealed. An extension of the Dyson integration theorem is a key ingredient of the theory presented
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