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Keywords: model
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Journal Articles
J Exp Biol (2021) 224 (2): jeb230961.
Published: 1 February 2021
..., we adapted dynamic scaling, borrowed from engineering, to determine settling velocity. Dynamic scaling leverages physical models with relevant dimensionless numbers matched to achieve similar dynamics to the original object. Previous studies have used flumes, wind tunnels or towed models to examine...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (23): 3777–3787.
Published: 1 December 2015
... to the horizon. Based on the responses obtained with male and female hoverflies, an improved model was then developed in which the output signals delivered by the neck proprioceptor organs are combined with the visual error in the estimated position of the body roll. An internal estimation of the body roll angle...
Journal Articles
Journal Articles
J Exp Biol (2013) 216 (2): 164–170.
Published: 15 January 2013
.... After a long history of modelling, recent work with O 2 -sensitive optodes has tested the models and extended our understanding of physical gill function. Models predict that compressible gas gills can extend dives up to more than eightfold, but this is never reached, because the animals surface long...
Journal Articles
J Exp Biol (2010) 213 (19): 3378–3387.
Published: 1 October 2010
... measurement was completed, the locust legs were removed and each body piece was measured, weighed, and photographed for use in the simulation. To distinguish between the model and its parts and the locust and its parts in the following account, the names of the model parts and behaviors are in italics...
Journal Articles
J Exp Biol (2010) 213 (7): 1060–1068.
Published: 1 April 2010
... behaviors but this hypothesis was not testable with current technology. We built a neuromechanical model to test this and to gain a better understanding of the role of the semi-lunar process (SLP) in jump dynamics. The jumping and kicking behaviors of the model were tested by comparing them with a variety...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2010) 213 (4): 643–650.
Published: 15 February 2010
...Thelma L. Williams SUMMARY A model is developed to predict the force generated by active skeletal muscle when subjected to imposed patterns of lengthening and shortening, such as those that occur during normal movements. The model is based on data from isolated lamprey muscle and can predict...
Journal Articles
J Exp Biol (2007) 210 (21): 3728–3735.
Published: 1 November 2007
....yakir@gmail.com ) 9 8 2007 © The Company of Biologists Limited 2007 2007 backscattering model sighting distance transmittance The open sea is devoid of shelter, making vision an important sense for both predation and predator avoidance( Hamner, 1996 ; McFall-Ngai, 1990...
Journal Articles
J Exp Biol (2007) 210 (11): 1885–1896.
Published: 1 June 2007
... and measured vertical ground reaction forces on the individual limbs of seven Warmblood dressage horses, trotting at 3.4 m s –1 and walking at 1.6 m s –1 on a treadmill. First, using a segmental model, we calculated from kinematics the total ground reaction force vector and its moment arm relative to each...
Journal Articles
J Exp Biol (2007) 210 (1): 82–90.
Published: 1 January 2007
... speed. This study shows that this approach can lead to erroneous results, due to spurious correlations. An alternative way to analyze air speed is proposed that overcomes the problems of one-dimensional linear models. The new model is non-linear and has two explanatory variables. Using two synthetic...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2005) 208 (15): 2845–2853.
Published: 1 August 2005
... a cyclical movement (such as locomotion)and the length change of the whole muscle tendon unit (MTU) can also be varied. Architecturally, muscles have a range of fibre lengths, maximum force-producing capabilities and stiffness of the series elastic element(SEE). In the present work we use a model to explore...
Journal Articles
J Exp Biol (2005) 208 (15): 2831–2843.
Published: 1 August 2005
... power output and efficiency of muscle by developing a model to predict the power output and efficiency of muscles under varying activation conditions during cyclical length changes. A comparison to experimental data from two different muscle types suggests that the model can effectively predict the time...
Journal Articles
Journal Articles
Journal Articles
J Exp Biol (2002) 205 (11): 1547–1564.
Published: 1 June 2002
...James R. Usherwood; Charles P. Ellington SUMMARY Recent work on flapping hawkmoth models has demonstrated the importance of a spiral `leading-edge vortex' created by dynamic stall, and maintained by some aspect of spanwise flow, for creating the lift required during flight. This study uses...
Journal Articles
J Exp Biol (2002) 205 (8): 1087–1096.
Published: 15 April 2002
...Sanjay P. Sane; Michael H. Dickinson SUMMARY We used a dynamically scaled model insect to measure the rotational forces produced by a flapping insect wing. A steadily translating wing was rotated at a range of constant angular velocities, and the resulting aerodynamic forces were measured using...
Journal Articles
J Exp Biol (2000) 203 (23): 3667–3674.
Published: 1 December 2000
...; means ± S.D.). A multiple linear regression model was developed to predict normalized thermistor response, Δ T , across a range of conditions. Significant model variables were identified using a backward stepwise regression procedure. The relationships for the in situ muscles were qualitatively similar...
Journal Articles
Journal Articles
J Exp Biol (1999) 202 (23): 3263–3268.
Published: 1 December 1999
... regular and that their interactions are driven by their chemical and morphological properties. In particular, a model based on liquid crystal structures has more than morphological implications. One implication may be that the question that I posed to some colleagues recently ‘What is the largest liquid...
Journal Articles
J Exp Biol (1998) 201 (14): 2115–2128.
Published: 1 July 1998
...A. A. Caputi; R. Budelli; K. Grant; C. C. Bell ABSTRACT The present study describes a measurement-based model of electric image generation in the weakly electric mormyrid fish Gnathonemus petersii . Measurements of skin impedance, internal resistivity and fish body dimensions have been used...