Results 71 to 80 of about 28,999 (200)

How sustainable is OpenStreetMap? Tracking individual trajectories of editing behavior

International Journal of Digital Earth
OpenStreetMap (OSM) has been playing increasingly important roles in location-based services, urban planning, tourism, and disaster management. In this paper, we examine a fundamental issue: can OSM reliably provide its services in the long run?
Xiang Zhang, Jiayan An, Yuchuan Zhou, Min Yang, Xi Zhao   +4 more
doaj   +1 more source

Re-reading the Map of Middle-earth: Fan Cartography\u27s Engagement with Tolkien\u27s Legendarium [PDF]

, 2018
J.R.R. Tolkien provided an elaborate textual history for his writings about Middle-earth, but did not do so for his now-iconic maps. This paper examines how this difference, in concert with the general tendency of readers to treat maps as objective ...
Danielson, Stentor
core   +1 more source

Cartographic Algorithms: Problems of Implementation and Evaluation and the Impact of Digitising Errors [PDF]

, 1991
Cartographic generalisation remains one of the outstanding challenges in digital cartography and Geographical Information Systems (GIS). It is generally assumed that computerisation will lead to the removal of spurious variability introduced by the ...
Visvalingam, M., Visvalingam, Maheswari, Whyatt, J. D.   +2 more
core   +1 more source

A Hybrid Data Assimilation Approach Integrating Kalman With Deep Learning‐Based Updates for Nonlinear and Non‐Gaussian Groundwater Systems

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract In hydrological research, data assimilation (DA) is a powerful tool for integrating observational data with numerical models, significantly enhancing predictive accuracy. However, nonlinear groundwater systems often exhibit high‐dimensional and non‐Gaussian characteristics in observations, parameters, and state variables, posing substantial ...
Lei Yao, Jiangjiang Zhang, Yuxin Ye, Chenglong Cao, Jianyun Zhang, Junliang Jin   +5 more
wiley   +1 more source

CG-CFPANet: a multi-task network for built-up area extraction from SDGSAT-1 and Sentinel-2 remote sensing images

International Journal of Digital Earth
Accurate extraction of built-up areas is helpful to urban development and map updating. Nighttime light (NTL) data can capture the lighting signal of ground objects.
Lei Wang, Cheng Ye, Fang Chen, Ning Wang, Congrong Li, Haiying Zhang, Yu Wang, Bo Yu   +7 more
doaj   +1 more source

Assessing Potential Landing Sites With Favorable Illumination and Accessible, Potentially Volatile‐Rich Permanently Shadowed Regions Within Artemis Candidate Landing Regions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract The lunar south pole features permanently shadowed regions (PSRs) that never receive direct sunlight. These regions maintain cold temperatures that potentially trap and accumulate volatiles over geologic timescales. Within NASA's Artemis candidate landing regions, we identified 130 candidate landing sites (CLSs) that satisfy the Human Landing ...
Lukas Wueller, Lauren M. Berger, Hephzibah Christopher, Kanori Sugimoto, Ashka D. Thaker, Louis Carton, William Jo, Seungil Lee, Riccardo Pedrelli, Pedro Sanchez, David A. Kring   +10 more
wiley   +1 more source

Evaluation of impervious surface extraction based on Qimingxing-1 nighttime light and point of interest data

International Journal of Digital Earth
Impervious surface extraction is essential for environmental management and urban studies. Although nighttime light data have been widely used for this purpose, few studies have utilized the high-resolution (21 m) Qimingxing-1 data released in 2022 ...
Suixuan Qiu, Zejia Chen, Huishan Luo, Jinyao Lin, Siyan Lu, Xinchang Zhang   +5 more
doaj   +1 more source

Commentary on a British Geological Survey Computing Archive (1965-85) [PDF]

, 1996
An account of the emergence of computer methods in geology, as a background to a restricted archive of documents which chronicle their application in the British Geological ...
Loudon, T.V.
core  

The State of the Art in Cartograms

, 2016
Cartograms combine statistical and geographical information in thematic maps, where areas of geographical regions (e.g., countries, states) are scaled in proportion to some statistic (e.g., population, income). Cartograms make it possible to gain insight
Alam, Alam, Beck, Bertin, Bhatt, Biedl, Borkin, Bostock, Brehmer, Buchin, Bustamente, Börner, Cano, Carr, Cleveland, Cleveland, Colizza, Croxton, de Berg, de Berg, Dent, Dent, Donnellan, Dorlimg, Dorling, Dougenik, Eppstein, Evans, Fabrikant, Fabrikant, Funkhouser, Gastner, Gerasimov, Griffin, Guseyn-Zade, Hay, Heer, Hennig, Hennig, Henriques, Howe, Howe, Hunter, Härö, Inoue, Jones, Kadmon, Kasner, Kaspar, Kawaguchi, Kaye, Keim, Keim, Keim, Kocmoud, Krauss, Krygier, Levison, Li, MacEachren, MacEachren, Meulemans, Mislove, North, Nöllenburg, Olson, Pan, Paull, Philbruck, Philip, Raisz, Reveiu, Rittschof, Rittschof, Rittschof, Roth, Roth, Schulz, Selvin, Skiena, Slocum, Snyder, Steven, Sun, Sun, Sun, TAO, Tobler, Tobler, Torguson, Tufte, van Kreveld, Vinogradova, Wake, WARE, Watson, WEHREND, Welzl, Yi, Zhou   +99 more
core   +1 more source

Evaluating Evapotranspiration Simulation Performance in 30 Conceptual Hydrological Models: Insights Into ET Representation Across Diverse Climates

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Existing comparative studies on conceptual hydrological model structures have generally focused on streamflow, with less attention to evapotranspiration (ET). Yet, appropriate ET representation in conceptual models is crucial for obtaining reliable hydrological simulations, especially under climate change and in ungauged basins.
Shuyue Wu, Yuting Yang, Changming Li, Wenjing Yang, Jianshi Zhao   +4 more
wiley   +1 more source