Results 261 to 270 of about 719,902 (313)

Spatial Flows and Spatial Patterns

Environment and Planning A: Economy and Space, 1984
The misspecification of gravity spatial interaction models has recently been described by the author. The bias in parameter estimates that results from such misspecification appears to produce the ‘map pattern effect’ or ‘spatial structure bias’ in estimated distance-decay parameters.
openaire   +2 more sources

Spatial patterns of glioblastoma

Cancer Cell
Glioblastoma features extensive gene expression heterogeneity and high lethality, yet the mechanisms underlying this heterogeneity and its link to clinical outcomes remain elusive. In this issue of Cancer Cell, Migliozzi et al. spatially profile glioblastoma specimens to uncover cellular mechanisms that govern the extent of the heterogeneity in ...
Toshiro, Hara, Cong, Ma
openaire   +2 more sources

Establishment of spatial pattern

WIREs Developmental Biology, 2014
AbstractAn overview and perspective are presented of mechanisms for the development of spatial pattern in animal embryos. It is intended both for new entrants to developmental biology and for specialists in other fields, with only a basic knowledge of animal life cycles being required.
openaire   +2 more sources

Spatial patterns and ESS's

Journal of Theoretical Biology, 1989
The classical idea of an evolutionarily stable strategy (ESS) does not involve any spatial dependence. An evolution equation for analyzing games in a region is suggested and the possibility of spatial patterns is investigated. It is shown that an ESS is so stable that it forbids any spatial dependence but that other equilibria may have patterns ...
openaire   +2 more sources

Spatial pattern and spatial autocorrelation

1995
The spatial pattern of a distribution is defined by the arrangement of individual entities in space and the geographic relationships among them. The capability of evaluating spatial patterns is a prerequisite to understanding the complicated spatial processes underlying the distribution of a phenomenon.
openaire   +1 more source

Spatial patterns of mortality in Bangladesh

Social Science & Medicine, 1993
This paper depicts the spatial patterns of mortality of the administrative upazilas of Bangladesh. Due to the absence of adequate data on mortality rates from across the country, the mortality rates of the upazilas are calculated from the age sex structure of the population of the respective upazilas employing the standardized mortality rates of ...
A H, Sharif, S M, Huq, , Mesbah-us-Saleheen   +2 more
openaire   +2 more sources

Spatial sampling of printed patterns

IEEE Transactions on Pattern Analysis and Machine Intelligence, 1998
The bitmap obtained by scanning a printed pattern depends on the exact location of the scanning grid relative to the pattern. We consider ideal sampling with a regular lattice of delta functions. The displacement of the lattice relative to the pattern is random and obeys a uniform probability density function defined over a unit cell of the lattice ...
Prateek Sarkar, George Nagy, Jiangying Zhou, Daniel P. Lopresti   +3 more
openaire   +1 more source

Evolution of spatial expression pattern

Evolution & Development, 2003
Summary How can complex patterns of gene expression evolve? Understanding the near‐precise repeatability of morphology created by animal development, through the interactions between morphogens and networks of transcription factors, is one of the most difficult outstanding problems in developmental biology.
Louise J, Johnson, John F Y, Brookfield
openaire   +2 more sources

The spatial pattern of Enchytraeidae (Oligochaeta)

Oecologia, 1985
Spatial pattern of enchytraeids (Oligochaeta: Enchytraeidae) was studied in an experimental plot in an apple orchard near Bavorov, South Bohemia, Czechoslovakia. A total of 450 soil cores were taken in 1982, all individuals were determined (juveniles to genus, mature individuals to species) and counted. In total, 17 species of 4 genera were found. Both
Josef, Chalupský, Jan, Lepš
openaire   +2 more sources

Spatial Patterns of Westerschelde Meiobenthos

Estuarine, Coastal and Shelf Science, 1994
Abstract The meiobenthic fauna of the Westerschelde, a highly polluted and physically disturbed estuary in the south-west Netherlands, was investigated. Samples were taken in spring from six transects, including the intertidal, subtidal and channel area, and located along the salinity gradient.
Soetaert, K.E.R., Vincx, M., Wittoeck, J., Tulkens, M., Van Gansbeke, D.   +4 more
openaire   +2 more sources