Optimal Attitude Control of Satellites by Artificial Neural Networks: a Pilot Study**The study was performed in the Autumn of 1993 by Fokker Space & Systems and the University of Amsterdam, and partially funded by the Dutch space agency NIVR. A detailed report is available on request.

Author(s):  
G. Schram ◽  
L. Karsten ◽  
B.J.A. Kröse ◽  
F.C.A. Groen
2020 ◽  
Vol 10 (16) ◽  
pp. 5405
Author(s):  
Cornelia Herbert ◽  
Michael Munz

The investigation of the neural correlates of human gait, as measured by means of non-invasive electroencephalography (EEG), is of central importance for the understanding of human gait and for novel developments in gait rehabilitation. Particularly, gait-event-related brain potentials (gERPs) may provide information about the functional role of cortical brain regions in human gait control. The purpose of this paper is to explore possible experimental and technical solutions for time-sensitive analysis of human gait ERPs during spontaneous and instructed treadmill walking. A solution (hardware/software) for synchronous recording of gait and EEG data was developed, tested and piloted. The solution consists of a custom-made USB synchronization interface, a time-synchronization module, and a data-merging module, allowing the temporal synchronization of recording devices, time-sensitive extraction of gait markers for the analysis of gERPs, and the training of artificial neural networks. In the present manuscript, the hardware and software components were tested with the following devices: A treadmill with an integrated pressure plate for gait analysis (zebris FDM-T) and an Acticap non-wireless 32-channel EEG system (Brain Products GmbH). The usability and validity of the developed solution was investigated in a pilot study (n = 3 healthy participants, n = 3 females, mean age = 22.75 years). The recorded continuous EEG data were segmented into epochs according to the detected gait markers for the analysis of gERPs. Finally, the EEG epochs were used to train a deep learning artificial neural network as classifier of gait phases. The results obtained in this pilot study, although preliminary, support the feasibility of the solution for the application of gait-related EEG analysis.


1995 ◽  
Vol 35 ◽  
pp. S160
Author(s):  
T. Barisani-Asenbauer ◽  
St. Kaminski ◽  
G. Krenn ◽  
M. Budil ◽  
A. Dietrich ◽  
...  

2015 ◽  
Vol 79 (2) ◽  
pp. 339-347 ◽  
Author(s):  
Enzo Grossi ◽  
Federica Veggo ◽  
Antonio Narzisi ◽  
Angelo Compare ◽  
Filippo Muratori

2001 ◽  
Author(s):  
J. Ward ◽  
S. J. Wilcox ◽  
O. H. Tan ◽  
C. K. Tan ◽  
R. J. Payne ◽  
...  

Abstract The Mechanical & Manufacturing Engineering Research Unit at the University of Glamorgan has been involved for the last 5 years in the application of neural networks to simulate the behaviour of a range of high temperature systems. Consequently this paper presents results from a number of studies concerned with boilers, furnaces and heat treatment processes. The first of these studies involves the prediction of heat transfer rates from air-assisted atomised water sprays for cooling aerospace forgings from high temperatures using the nozzle air and water pressures as inputs to the network. The second case is concerned with prediction of pollutant emissions from a coal-fired boiler using previous measured emission concentrations and an indication of the current boiler load and combustion air flow rate. In both these cases experimental results were used to train the networks. The final example deals with the prediction of load temperatures in an intermittently operated, gas-fired, metal reheating furnace. In contrast, in this example, data generated from a previously validated mathematical model of the furnace were employed for training purposes. Artificial neural networks were found to provide adequate representation of all three systems.


2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Gavin Robertson ◽  
Eldon D. Lehmann ◽  
William Sandham ◽  
David Hamilton

Diabetes mellitus is a major, and increasing, global problem. However, it has been shown that, through good management of blood glucose levels (BGLs), the associated and costly complications can be reduced significantly. In this pilot study, Elman recurrent artificial neural networks (ANNs) were used to make BGL predictions based on a history of BGLs, meal intake, and insulin injections. Twenty-eight datasets (from a single case scenario) were compiled from the freeware mathematical diabetes simulator, AIDA. It was found that the most accurate predictions were made during the nocturnal period of the 24 hour daily cycle. The accuracy of the nocturnal predictions was measured as the root mean square error over five test days (RMSE5 day) not used during ANN training. For BGL predictions of up to 1 hour aRMSE5 dayof (±SD)0.15±0.04 mmol/L was observed. For BGL predictions up to 10 hours, aRMSE5  dayof (±SD)0.14±0.16 mmol/L was observed. Future research will investigate a wider range of AIDA case scenarios, real-patient data, and data relating to other factors influencing BGLs. ANN paradigms based on real-time recurrent learning will also be explored to accommodate dynamic physiology in diabetes.


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