Results 101 to 110 of about 1,735,900 (276)

An Accurate and Time-Efficient Algorithm for Computing Isoline Sourced from Polylines on Triangle Meshes

open access: yesTsinghua Science and Technology
Geodesic isolines derived from polylines constitute a crucial element within geographic information systems, playing a pivotal role in enhancing the understanding of geographical terrains.
Wenlong Meng   +4 more
doaj   +1 more source

Unusual vertical oscillations of a radiosonde

open access: yesWeather, EarlyView.
In summer 2023 in southern England, several unusual balloon launches were observed which descended for a few minutes before resuming ascent. This unusual vertical oscillation was repeated several times in a ‘roller‐coaster’‐like pattern. This article discusses the behaviour of the balloons.
Caleb Miller   +3 more
wiley   +1 more source

Estimating large carnivore populations in an arid fenced reserve using spatial capture–recapture modelling

open access: yesWildlife Biology, EarlyView.
In fenced protected areas where large carnivore populations persist or have been restored through reintroduction, population monitoring is essential to inform management. Robust density estimates are particularly important given the strong influence of large carnivores on ecosystem processes, yet such data remain scarce for arid systems where ...
Marna Visagie   +3 more
wiley   +1 more source

Strong 3-Rainbow Indexes of Closed Helm Graphs

open access: yesIndonesian Journal of Combinatorics
Let G be a nontrivial, edge-colored, and connected graph of order m≥3 where adjacent edges may have the same color. A tree T in graph G is called a rainbow tree if all the edges in T have different colors.
Calista Suci Nugrahani   +2 more
doaj   +1 more source

Steiner Distance in Graphs--A Survey

open access: yes, 2017
85 pages, 14 figures, 3 ...
openaire   +2 more sources

Forest and fire drive moose (deníe) detections near their northern range limit

open access: yesWildlife Biology, EarlyView.
One way to understand species range shifts in response to anthropogenic climate change is to study populations living at the limit of climate and resource suitability. Moose Alces alces (deníe in Dënesųłıné) generally require forest–wetland landscape complexes but are increasingly seen across the forest–tundra transition at their northern range limit ...
Claudia A. Haas   +3 more
wiley   +1 more source

Towards data‐driven predictive maintenance for vacuum ion pumps at European XFEL

open access: yesJournal of Synchrotron Radiation, EarlyView.
This paper presents a machine‐learning‐based approach for early fault detection in vacuum ion pumps at the European XFEL by analyzing pressure data to detect fault precursors. The developed method enables predictive maintenance, reducing unplanned downtime and improving operational reliability.Large‐scale scientific facilities, such as the European ...
Amna Majid   +6 more
wiley   +1 more source

La autoría y la acreditación de la identidad en los trabajos personales en Educación a Distancia. Una experiencia

open access: yesRED. Revista de Educación a Distancia, 2004
How can works and individual learnings be valued in distance learning? And, after all, how can we promote a distance learning student by giving grades and degrees?
Miguel Zapata Ros
doaj  

Steiner distance in graphs [PDF]

open access: yesČasopis pro pěstování matematiky, 1989
Gary Chartrand   +3 more
openaire   +1 more source

Pollinator community composition and pollen resource use in calcareous grasslands under different landscape contexts across Europe

open access: yesJournal of Animal Ecology, EarlyView.
In this paper, we show that pronounced differences in pollinator communities exist between grasslands embedded in contrasting agricultural landscape contexts. Opportunistic foraging strategies of most pollinators resulted in large interaction turnover, but these shifts did not translate into major changes in overall network structure, most likely as a ...
Olivia Bernhardsson   +17 more
wiley   +1 more source

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