Results 71 to 80 of about 4,411,385 (345)

Spatial Heterogeneity, Broadband, and New Firm Formation

Kvalita Inovácia Prosperita, 2017
Purpose: This paper examines the spatial heterogeneity associated with broadband Internet and new firm formation in a number of U.S. states. Methodology/Approach: Both ordinary least-squares regression and Geographically Weighted Regression are used ...
Jitendra Parajuli, Kingsley Haynes
doaj   +1 more source

A Forest of Forests: A Spatially Weighted and Computationally Efficient Formulation of Geographical Random Forests

ISPRS International Journal of Geo-Information, 2022
The aim of this paper is to present developments of an advanced geospatial analytics algorithm that improves the prediction power of a random forest regression model while addressing the issue of spatial dependence commonly found in geographical data. We
Stefanos Georganos, Stamatis Kalogirou
doaj   +1 more source

Spatial heterogeneity, industry heterogeneity, and entrepreneurship

The Annals of Regional Science, 2017
The prevalence of entrepreneurship varies not only across regions but also among industries. Using a unique panel dataset of 60 two-digit industries across 64 provinces from 2000 to 2010 in Vietnam, we investigate the importance of spatial and sectoral heterogeneity in an analysis of the determinants of entrepreneurship and empirically explore the ...
Hien Thu Tran, Enrico Santarelli
openaire   +3 more sources

The impact of user spatial heterogeneity in heterogeneous cellular networks [PDF]

2014 IEEE Globecom Workshops (GC Wkshps), 2014
The spatial distribution of users in cellular networks plays an important role on network performance. It is becoming increasingly common in the recent literature to model the user locations according to a homogeneous Poisson point process, yet users are often spatially clustered in reality.
Ziyang Wang, Rainer Schoenen, Halim Yanikomeroglu, Marc St-Hilaire   +3 more
openaire   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

3D-SHI index for quantifying 3D spatial heterogeneity in big Earth data

International Journal of Digital Earth
Investigating spatial heterogeneity is a crucial aspect of spatial analysis. Existing studies have primarily focused on measuring 2D geographic distribution, which cannot be directly applied to extensive 3D big earth datasets.
Peijie Sun, Hengcai Zhang, Peixiao Wang, Jianing Yu   +3 more
doaj   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

The effects of variable spatial aggregation on lymphatic filariasis transmission

Parasites & Vectors
Background Elimination of lymphatic filariasis (LF) is a World Health Organization goal, with several countries at or near prevalence thresholds.
Callum Shaw, Angus McLure, Kathryn Glass
doaj   +1 more source

Encapsulating Spatially Varying Relationships with a Generalized Additive Model

ISPRS International Journal of Geo-Information
This paper describes the use of Generalized Additive Models (GAMs) to create regression models whose coefficient estimates vary with geographic location—spatially varying coefficient (SVC) models. The approach uses Gaussian Process (GP) splines (smooths)
Alexis Comber, Paul Harris, Daisuke Murakami, Tomoki Nakaya, Narumasa Tsutsumida, Takahiro Yoshida, Chris Brunsdon   +6 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source