Results 151 to 160 of about 2,715,644 (293)

Economic Geography within and between European Nations: The Role of Market Potential and Density across Space and Time [PDF]

open access: yes
In explaining the uneven spatial distribution of economic activity, urban economics and new economic geography (NEG) dominate recent research in economics.
Steven Brakman   +2 more
core  

PhenoFECT: A Python package for forecasting and exploring plant phenology under climate change

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Climate change and global warming significantly affect the timing of plant flowering in spring. Accurately predicting these phenological events is crucial for understanding plant biology and agriculture. The chill‐day model (CDM) based on seasonal temperature changes has been a reliable model for predicting phenological activities ...
Songwon Kim, In‐Geol Choi
wiley   +1 more source

Spatial evolution of the US urban system. [PDF]

open access: yes
We examine spatial features of the evolution of the US urban system usingUS Census data for 1900 – 1990 with non-parametric kernel estimation techniques that accommodate the complexity of the urban system.
Ioannides, Yannis, Overman, Henry G.
core  

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

open access: yesThe Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

Shifts in Economic Geography and their Causes [PDF]

open access: yes
This paper analyses some of the forces that are changing the spatial distribution of activity in the world economy. It draws on the 'new economic geography' literature to argue the importance of increasing returns to scale and cumulative causation ...
Anthony J. Venables
core  

Evaluating Bergmann's and Allen's rules in the long bones of the eastern gray squirrel

open access: yesThe Anatomical Record, EarlyView.
Abstract Ecogeographical rules predict variation in body size and appendage proportions across climatic gradients, yet intraspecific tests using long bones from wild populations remain limited among small mammals. This study tests the hypothesis that eastern gray squirrels (Sciurus carolinensis) conform to Bergmann's rule, that is, body size increases ...
Tyler Blake, Habiba Chirchir
wiley   +1 more source

Leveraging Big Multitemporal Multisource Satellite Data and Artificial Intelligence for the Detection of Complex and Invisible Features: The Case of Extensive Irrigation Mapping

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT The detection of buried or obscured archaeological features remains a central challenge in landscape archaeology, particularly in the irrigated floodplains of Mesopotamia where levees and canals formed the basis of complex agrarian systems. This study presents a deep learning–based approach for the large‐scale, automated detection of ancient ...
Nazarij Buławka   +4 more
wiley   +1 more source

Archaeological Prospectivity and Terrace Morphometry Using Open Geospatial Data: A Reproducible GIS–Machine‐Learning Workflow for the Cuyes River Valley, Ecuador

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT This study develops and evaluates a reproducible archaeological prospectivity workflow for data‐scarce tropical landscapes by integrating restricted legacy archaeological documentation with openly accessible environmental geospatial datasets.
Julio Guerra   +2 more
wiley   +1 more source

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