scholarly journals Biomedical Adaptive Educational Hypermedia System: a Theoretical Model for Adaptive Navigation Support

10.5772/12883 ◽  
2011 ◽  
Author(s):  
Maria Aparecida Fernandes Almeida ◽  
Fernando Mendes de Azevedo
Keyword(s):  
Theoretical Model ◽  
System A ◽  
Navigation Support ◽  
Hypermedia System ◽  
Adaptive Navigation Support ◽  
Educational Hypermedia

Adaptive Navigation Support in Educational Hypermedia on the World Wide Web

1997 ◽  
pp. 278-285 ◽  
Author(s):  
Peter Brusilovsky ◽  
John Eklund ◽  
Elmar Schwarz
Keyword(s):  
World Wide Web ◽  
World Wide ◽  
Navigation Support ◽  
The World ◽  
Adaptive Navigation Support ◽  
Educational Hypermedia

A theoretical model of the Adaptive Navigation support

2010 ◽  
Author(s):  
Maria Aparecida Fernandes Almeida ◽  
Fernando Mendes de Azevedo
Keyword(s):  
Theoretical Model ◽  
Navigation Support ◽  
Adaptive Navigation Support

Simulations of Synaptic Transmission Using Lattice Boltzmann Methods

2002 ◽  
Author(s):  
Mehrak Mahmoudi ◽  
Piroz Zamankhan ◽  
William Polashenski
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Theoretical Model ◽  
Lattice Boltzmann ◽  
Chemical Substance ◽  
Human Central Nervous System ◽  
Lattice Boltzmann Methods ◽  
Nerve Impulses ◽  
System A ◽  
The Central Nervous System

The nervous system remains one of the least understood biological structures due in large part to the enormous complexity of this organ. A theoretical model for the transfer of nerve impulses would be valuable for the analysis of various phenomena in the nervous system, which are difficult to study by experiments. The central nervous system is composed of more than 100 billion neurons, through which information is transmitted via nerve impulses. Nerve impulses are not immediately apparent since each impulse may be blocked during transmission, changed from a single impulse into repetitive impulse, or integrated with impulses from other neurons to form highly intricate patterns. In the human central nervous system, a neuron secretes a chemical substance called a neurotransmitter at the synapse, and this transmitter in turn acts on another neuron to cause excitation, inhibition, or some other modification of its sensitivity.

Large Stroke Series Compliant Mechanism

2012 ◽  
Vol 490-495 ◽  
pp. 1104-1108 ◽  
Author(s):  
Ming Cai Shan ◽  
Wei Ming Wang ◽  
Shu Yuan Ma ◽  
Shuang Liu
Keyword(s):  
Theoretical Model ◽  
Maximum Stress ◽  
Compliant Mechanism ◽  
Critical Parameters ◽  
Element Analysis ◽  
Flexure Hinges ◽  
Body Model ◽  
System A ◽  
Rigid Body Model ◽  
The Difference

To increase the stroke of precision positioning system, a novel series compliant mechanism is presented which is based on elliptical flexure hinges. Pseudo-rigid-body model and energy method are applied to establish the theoretical model of stiffness and maximum stress, which are critical parameters for the large stroke compliant mechanism. The relationships are analyzed between geometric parameters of the series complaint mechanism, stiffness and maximum stress. According that, the series compliant mechanism is designed with the stroke more than 5mm and stiffness less than 3.2N/mm. The difference is less than 5% between the results of finite element analysis and theoretical model computation, which proves the correctness of the application design.

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