Author: Luka Sterle
Publisher:
ISBN:
Category :
Languages : en
Pages : 85
Book Description
Biomechanical properties of ocular tissues are assumed to play an important role in the pathogenesis of a variety of ocular diseases. This is particularly true for glaucoma, where the tissue biomechanics appears to determine which level of intraocular pressure can be tolerated in an individual eye. In the recent years several mathematical models were established and measurements of ocular biomechanical properties were obtained from in vitro and in vivo measurements. In this master thesis we developed finite element modeling of the human eye. New algorithms integrated all available data on ocular biomechanical properties, available at the Center of Medical Physics and Biomedical Engineering from interferometric measurements.
A Finite Element Model to Predict the Dynamic Behavior of the Human Eye
Author: Luka Sterle
Publisher:
ISBN:
Category :
Languages : en
Pages : 85
Book Description
Biomechanical properties of ocular tissues are assumed to play an important role in the pathogenesis of a variety of ocular diseases. This is particularly true for glaucoma, where the tissue biomechanics appears to determine which level of intraocular pressure can be tolerated in an individual eye. In the recent years several mathematical models were established and measurements of ocular biomechanical properties were obtained from in vitro and in vivo measurements. In this master thesis we developed finite element modeling of the human eye. New algorithms integrated all available data on ocular biomechanical properties, available at the Center of Medical Physics and Biomedical Engineering from interferometric measurements.
Publisher:
ISBN:
Category :
Languages : en
Pages : 85
Book Description
Biomechanical properties of ocular tissues are assumed to play an important role in the pathogenesis of a variety of ocular diseases. This is particularly true for glaucoma, where the tissue biomechanics appears to determine which level of intraocular pressure can be tolerated in an individual eye. In the recent years several mathematical models were established and measurements of ocular biomechanical properties were obtained from in vitro and in vivo measurements. In this master thesis we developed finite element modeling of the human eye. New algorithms integrated all available data on ocular biomechanical properties, available at the Center of Medical Physics and Biomedical Engineering from interferometric measurements.
Finite Element Modeling of the Human Eye
Author: Venetia V. Chan
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
A three-dimensional finite element model was created to analyze the mechanical interactions between the various substructures within the human eye. During certain activities, mechanical interactions may lead to a resultant distribution of stresses within the eye that may in turn produce various retinal diseases. The entire eye was modeled using dynamic finite element analysis to incorporate the mechanical effects of all of the substructures on the retina. A set of mechanical properties for each substructure was determined from previously published studies. Saccadic motion was modeled in the normal human eye to determine the location and magnitude of peak stresses in the retina and optic nerve head during initial loading. After 0.6125 ms, stresses as high as 5.4 x 107 Pa were reached. The peak stresses occurred in the portions of the retina and the optic nerve head close to the boundary between these two substructures.
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
A three-dimensional finite element model was created to analyze the mechanical interactions between the various substructures within the human eye. During certain activities, mechanical interactions may lead to a resultant distribution of stresses within the eye that may in turn produce various retinal diseases. The entire eye was modeled using dynamic finite element analysis to incorporate the mechanical effects of all of the substructures on the retina. A set of mechanical properties for each substructure was determined from previously published studies. Saccadic motion was modeled in the normal human eye to determine the location and magnitude of peak stresses in the retina and optic nerve head during initial loading. After 0.6125 ms, stresses as high as 5.4 x 107 Pa were reached. The peak stresses occurred in the portions of the retina and the optic nerve head close to the boundary between these two substructures.
A Finite Element Computer Program for Predicting the Nonlinear Static and Dynamic Behavior of Viscoelastic Components
Author: D. A. Dieterich
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 316
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 316
Book Description
Handbook of Human Factors and Ergonomics
Author: Gavriel Salvendy
Publisher: John Wiley & Sons
ISBN: 0470528389
Category : Technology & Engineering
Languages : en
Pages : 1754
Book Description
The fourth edition of the Handbook of Human Factors and Ergonomics has been completely revised and updated. This includes all existing third edition chapters plus new chapters written to cover new areas. These include the following subjects: Managing low-back disorder risk in the workplace Online interactivity Neuroergonomics Office ergonomics Social networking HF&E in motor vehicle transportation User requirements Human factors and ergonomics in aviation Human factors in ambient intelligent environments As with the earlier editions, the main purpose of this handbook is to serve the needs of the human factors and ergonomics researchers, practitioners, and graduate students. Each chapter has a strong theory and scientific base, but is heavily focused on real world applications. As such, a significant number of case studies, examples, figures, and tables are included to aid in the understanding and application of the material covered.
Publisher: John Wiley & Sons
ISBN: 0470528389
Category : Technology & Engineering
Languages : en
Pages : 1754
Book Description
The fourth edition of the Handbook of Human Factors and Ergonomics has been completely revised and updated. This includes all existing third edition chapters plus new chapters written to cover new areas. These include the following subjects: Managing low-back disorder risk in the workplace Online interactivity Neuroergonomics Office ergonomics Social networking HF&E in motor vehicle transportation User requirements Human factors and ergonomics in aviation Human factors in ambient intelligent environments As with the earlier editions, the main purpose of this handbook is to serve the needs of the human factors and ergonomics researchers, practitioners, and graduate students. Each chapter has a strong theory and scientific base, but is heavily focused on real world applications. As such, a significant number of case studies, examples, figures, and tables are included to aid in the understanding and application of the material covered.
Conference Proceedings
Author:
Publisher:
ISBN:
Category : CAD/CAM systems
Languages : en
Pages : 692
Book Description
Publisher:
ISBN:
Category : CAD/CAM systems
Languages : en
Pages : 692
Book Description
Model-based Image Processing
Author: Yeuk Fai Ho
Publisher:
ISBN:
Category :
Languages : en
Pages : 448
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 448
Book Description
A Dynamic, Nonlinear Finite-element Model of a Human Leg
Author: T. K. Hight
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
Lumped-parameter and Finite-element-models for Dynamic Behavior of Plane Straight Sided Frames
Author: James Harold Harley
Publisher:
ISBN:
Category :
Languages : en
Pages : 113
Book Description
Lumped-parameter and finite-element-models are developed for the dynamic behavior of plane straight sided frames. The models do not include axial and shear deformation, but the equations of motion developed using the models allow for time varying external loading. The performance of these models is evaluated by a comparison with a standard transfer matrix method for the special case of free undamped vibration. The finite-element-model proves to be much the better model. For the first five modes, the finite-element-model with 27 degrees of freedom differs by no more than 0.4% from the 'exact values' given by the transfer matrix method. The lumped-parameter-model with 39 degrees of freedom gives errors roughly ten times as great. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 113
Book Description
Lumped-parameter and finite-element-models are developed for the dynamic behavior of plane straight sided frames. The models do not include axial and shear deformation, but the equations of motion developed using the models allow for time varying external loading. The performance of these models is evaluated by a comparison with a standard transfer matrix method for the special case of free undamped vibration. The finite-element-model proves to be much the better model. For the first five modes, the finite-element-model with 27 degrees of freedom differs by no more than 0.4% from the 'exact values' given by the transfer matrix method. The lumped-parameter-model with 39 degrees of freedom gives errors roughly ten times as great. (Author).
A Complete Dynamic Model for the Human Eye
Author: Shannon Cornell
Publisher:
ISBN:
Category : Eye
Languages : en
Pages : 130
Book Description
Publisher:
ISBN:
Category : Eye
Languages : en
Pages : 130
Book Description