scholarly journals Shape, variance and integration during craniogenesis: contrasting marsupial and placental mammals

2012 ◽  
Vol 25 (5) ◽  
pp. 862-872 ◽  
Author(s):  
A. GOSWAMI ◽  
P. D. POLLY ◽  
O. B. MOCK ◽  
M. R. SÁNCHEZ-VILLAGRA
Keyword(s):  
2015 ◽  
Vol 13 ◽  
pp. 175-179 ◽  
Author(s):  
N. Briest ◽  
H. Garbe ◽  
S. Potthast

Abstract. This article broaches the issue of the propagation of transient signals in gigahertz transverse electromagnetic (GTEM) cells. As a representative for transient signals a damped sinusoidal (DS) is used with three different mid-band frequencies. The signal transmission of the DS in the GTEM1250 is qualified and discussed on the basis of the Pearson correlation coefficient (Pcc). The Pcc gives an overview of the signal transmission quality for all measuring points within the testvolume and signal distortions can be identified. A 100 MHz DS is weakly distorted in several measuring points. The Pcc at those points decreases and a signal shape variance can be assumed. Furthermore inhomogeneities of the GTEM1250 caused by the cell door can be identified.


2008 ◽  
Vol 212 (2) ◽  
pp. 135-143 ◽  
Author(s):  
Trish E. Parsons ◽  
Erika Kristensen ◽  
Lynnette Hornung ◽  
Virginia M. Diewert ◽  
Steven K. Boyd ◽  
...  

1985 ◽  
Vol 224 (1234) ◽  
pp. 107-114 ◽  

Syrphus ribesii is a common and highly successful hoverfly. I identify here size and shape differences within and between the sexes. Males have shorter, relatively broader wings, a bigger thorax, and a narrower abdomen than females. The labellum, a fleshy pad at the end of the proboscis, is involved in feeding, and its size is closely correlated with body size in males, but varies more independently in females. Labellum size is the most important contributor to shape variance in females: abdomen size is the corresponding variable in males. Male measurements show negative skewness and kurtosis both in individual variables and when compared with a multivariate-normal distribution. Females show no deviations from uni- or multivariate-normal distributions. Adaptive reasons for these differences are suggested: male size and shape may be adjusted for the ability to catch females by high-speed chases in cool weather early in the morning; female shape may be influenced mainly by feeding behaviour.


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