Difference between revisions of "Parameters"
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| − | + | '''[[VirtuaLab]]''' | [[MODELS]] | [[OUR PUBLICATIONS]] | | |
| − | [[ | + | == [[MOVING REFERENCE MODELS|Moving-reference model]] parameters == |
| − | The model includes 6 parameters, representing morphospace dimensions: | + | [[Image:Model_parameters.jpg|thumb|left|222px|<font size="2">Moving-reference model parameters <font size="1">([[Tyszka 2006]], modified)</font>]] |
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| + | The model includes 6 parameters, representing [[MORPHOSPACE|'''morphospace''']] dimensions: | ||
* Chamber scaling ratios defined in 3-dimensional space by 3 parameters: | * Chamber scaling ratios defined in 3-dimensional space by 3 parameters: | ||
| − | + | ** '''kx''' - chamber width ratio, | |
| − | + | ** '''ky''' - chamber height ratio, | |
| − | + | ** '''kz''' - chamber depth ratio. | |
| + | If all chamber scaling ratios equal each other, i.e., kx = ky = kz, a new chamber is isometric to the previous one. Any differences in chamber scaling ratios cause allometric growth of successive chambers. | ||
* '''TF''' (translation factor) controls an overlap of successive chambers (see Fig.); the “0” TF value places the centre of a new chamber directly at the aperture of the last chamber. This parameter ranges from “-1” to “+1” values. Higher values detach a new chamber from the existing shell that represents a “forbidden zone” sensu Berger (1969) | * '''TF''' (translation factor) controls an overlap of successive chambers (see Fig.); the “0” TF value places the centre of a new chamber directly at the aperture of the last chamber. This parameter ranges from “-1” to “+1” values. Higher values detach a new chamber from the existing shell that represents a “forbidden zone” sensu Berger (1969) | ||
* '''φ''' as a deviation angle (deflection angle) an angle between the local reference line and the line defining the centre of a new chamber; it ranges from -180° to 180°. Higher or lower out of range values can be recalculated to the values from the given range | * '''φ''' as a deviation angle (deflection angle) an angle between the local reference line and the line defining the centre of a new chamber; it ranges from -180° to 180°. Higher or lower out of range values can be recalculated to the values from the given range | ||
* '''β''' as a rotation angle; this parameter is necessary in 3-dimensional space. It ranges from -180° to 180°; higher or lower values can also be recalculated. | * '''β''' as a rotation angle; this parameter is necessary in 3-dimensional space. It ranges from -180° to 180°; higher or lower values can also be recalculated. | ||
| − | + | ---- | |
| + | ''After [[Tyszka 2006]]'' | ||
