Experimental Study on Population Density of Different Occupant Types in Supermarket Evacuation

2014 ◽  
Vol 24 (1) ◽  
pp. 123-140
Author(s):  
Guowei Zhang ◽  
Guoqing Zhu ◽  
Lili Huang
Keyword(s):  
Experimental Study ◽  
Population Density

An experimental study of habitat selection by the deer mouse, Peromyscus maniculatus, on Mandarte Island, B.C.

1981 ◽  
Vol 59 (4) ◽  
pp. 589-597 ◽  
Author(s):  
Juan R. Merkt
Keyword(s):  
Experimental Study ◽  
Habitat Selection ◽  
Population Density ◽  
Peromyscus Maniculatus ◽  
Deer Mouse ◽  
Deer Mice ◽  
Intraspecific Interaction ◽  
Preferred Habitat ◽  
Absolute Density ◽  
Grassland Habitats

Mandarte Island, British Columbia, Canada, consists of a mosaic of shrubbery and grassland habitats. In a 6-month study, deer mice, Peromyscus maniculatus, were found to live at high absolute density and at higher relative densities in shrubbery habitat. A removal experiment was conducted to investigate how the habitat preference and density of mice affect their distribution on Mandarte Island. All resident mice were removed from an area containing both shrubbery and grassland. This gave mice dispersing from other areas the opportunity to colonize these two vacant habitats. Mice settled first in the shrubbery. As population density increased, some later colonists occupied the less favoured grasslands. I suggest that intraspecific interaction, associated with high density, was sufficient to prevent settlement of some individuals in the preferred habitat.

Effects of Familiarity and Population Density on Competitive Interactions and Growth: An Experimental Study on a Territorial Salmonid Fish

Ethology ◽  
2015 ◽  
Vol 121 (12) ◽  
pp. 1202-1211 ◽  
Author(s):  
Libor Závorka ◽  
Joacim Näslund ◽  
David Aldvén ◽  
Johan Höjesjö ◽  
Jörgen I. Johnsson
Keyword(s):  
Experimental Study ◽  
Population Density ◽  
Salmonid Fish ◽  
Competitive Interactions

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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