Results 91 to 100 of about 21,615 (266)

Insect communities of late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker   +4 more
wiley   +1 more source

Illegal Gold Mining in the Brazilian Amazon: Environmental Degradation in Yanomami Indigenous Lands, and Regulatory Failures

open access: yesSustainable Development, EarlyView.
ABSTRACT Illegal gold mining has emerged as a major sustainability threat in the Amazon, eroding Indigenous rights, forest integrity, and climate mitigation efforts. This study examines how international market incentives relate to the expansion of illegal mining and associated deforestation within the Yanomami Indigenous Territory (YIT) from 2008 to ...
Shirléia Lago Santos   +2 more
wiley   +1 more source

On Monochromatic Subgraphs of Edge-Colored Complete Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2014
In a red-blue coloring of a nonempty graph, every edge is colored red or blue. If the resulting edge-colored graph contains a nonempty subgraph G without isolated vertices every edge of which is colored the same, then G is said to be monochromatic.
Andrews Eric   +4 more
doaj   +1 more source

Sustainability and Corporate Performance in the Global South: The Influence of the Environmental Pillar and Institutional Quality

open access: yesSustainable Development, EarlyView.
ABSTRACT Corporate sustainability in the Global South unfolds under heterogeneous institutional conditions, where firms face simultaneous pressures from global ESG standards and local governance constraints. This study examines the relationship between ESG‐aligned environmental practices and corporate financial performance, considering the moderating ...
Paulo Sérgio Reinert   +3 more
wiley   +1 more source

On fractional Ramsey numbers

open access: yesDiscrete Mathematics, 1997
Fractional Ramsey numbers \(r_f(x,y)\) are defined as the smallest integer \(n\) such that for any red/blue coloring of the edges of the complete graph \(K_n\) either the red subgraph has the fractional clique number \(x\) or the blue subgraph has the fractional clique number \(y\).
Michael S. Jacobson   +2 more
openaire   +1 more source

FinTech and Environmental Sustainability: Evidence From Brazil

open access: yesSustainable Development, EarlyView.
ABSTRACT This study explores the dynamic interplay between economic growth and environmental sustainability from a FinTech perspective, using Brazil as a case study. While FinTech's contribution to green transformation, sustainable finance, and resource efficiency has gained increasing attention, a notable lack of empirical research remains to assess ...
Kemal Eyuboglu, Umut Uzar
wiley   +1 more source

The Ramsey numbers of fans versus a complete graph of order five

open access: yesElectronic Journal of Graph Theory and Applications, 2014
For two given graphs $F$ and $H$, the Ramsey number $R(F,H)$ is the smallest integer $N$ such that for any graph $G$ of order $N$, either $G$ contains $F$ or the complement of $G$ contains $H$.
Yanbo Zhang, Yaojun Chen
doaj   +1 more source

Small Ramsey Numbers

open access: yesThe Electronic Journal of Combinatorics, 2011
We present data which, to the best of our knowledge, includes all known nontrivial values and bounds for specific graph, hypergraph and multicolor Ramsey numbers, where the avoided graphs are complete or complete without one edge. Many results pertaining to other more studied cases are also presented.
openaire   +2 more sources

Energy Poverty and Climate Shocks: Are Changing Weather Patterns Leaving South Africa in the Dark?

open access: yesSustainable Development, EarlyView.
ABSTRACT Energy and climate change are deeply interlinked, with the latter exerting significant influence on energy demand and supply. In regions such as South Africa, where socio‐economic vulnerability is high, understanding how climate change affects energy poverty is essential to achieving the Sustainable Development Goals, particularly SDG 7 ...
WiZelle Kritzinger, Roula Inglesi‐Lotz
wiley   +1 more source

Advancing SDG7–SDG13 Through Technology Innovation: The Environmental Impacts of Technological Advancements in Green, Fossil, and Energy Efficiency in Türkiye

open access: yesSustainable Development, EarlyView.
ABSTRACT Identifying the principal drivers of carbon emissions is vital for designing effective mitigation strategies and supporting long‐term environmental sustainability. Although previous studies have explored multiple determinants of emissions, limited attention has been paid to the most influential energy–technology channels within trade‐dependent
Gang Kou   +3 more
wiley   +1 more source

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