Results 231 to 240 of about 3,141,129 (301)

A Spatial Structure of Key Tree Species <i>Metrodorea nigra</i> St. Hill. (Rutaceae) Is Associated with Historical Disturbance and Isolation in Southeastern Brazil. [PDF]

Plants (Basel)
Moraes Filho RM, Bonifácio-Anacleto F, Alzate-Martinez FA, Martinez CA, Alzate-Marin AL.   +4 more
europepmc   +1 more source

Going With the Flow? Relative Importance of Riverine Hydrologic Connectivity Versus Tidal Influence for Spatial Structure of Genetic Diversity and Relatedness in a Foundational Submersed Aquatic Plant. [PDF]

Ecol Evol
Neel MC, Marsden BW, Engelhardt KAM.
europepmc   +1 more source

Kinematics and spatial structure analysis of TBM gunite robot based on D-H parameter method. [PDF]

Sci Rep
Jia L, Liu S, Cao C, Kang Y, Zhu Y, Wang L, Xu D, Cheng R.   +7 more
europepmc   +1 more source

Socio-Spatial Structures

, 2019
openaire   +1 more source

Age-specificity in territory quality and spatial structure in a wild bird population

Woodman JP, Cole EF, Firth JA, Sheldon BC.   +3 more
europepmc   +1 more source

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Spatial Problem Solving in Spatial Structures

2017
The ability to solve spatial tasks is crucial for everyday life and therefore of great importance for cognitive agents. In artificial intelligence (AI) we model this ability by representing spatial configurations and spatial tasks in the form of knowledge about space and time.
Christian Freksa, Ana-Maria Olteţeanu, Thomas Barkowsky, Jasper van de Ven, Holger Schultheis   +4 more
openaire   +1 more source

Spatially Oscillating Structures

2010
This chapter illustrates applications of nonsmooth argument substitutions to modeling spatially oscillating structures such as one-dimensional elastic rods with periodic discrete inclusions, and two- or three-dimensional acoustic media with periodic nonsmooth boundary sources of waves.
openaire   +1 more source

Structural Spatial Interaction∗

The Professional Geographer, 1993
This paper identifies a concept of structural spatial interaction. Although it is defined differently from its counterpart of structural unemployment in economics, it attempts to define a similar idea. In economics, the focus is on equilibrium in the supply and demand of labor.
openaire   +1 more source

Spatial covariance structure

2004
For any component in time series analysis (Natke 1983), the concept of covariance between components of a spatially distributed random vector Z(u) leads to: direct covariances, Cov[Zi(u),Zj(u)]; shifted covariances or spatial covariances, Cov [Zi(u), Zj-(u+ h)], also known as cross-covariance functions; and autocovariance functions, Cov[Zi(u),Zi(u + h)]
Vera Pawlowsky-Glahn, Richardo A. Olea
openaire   +1 more source