Results 11 to 20 of about 171,626 (298)

On Some New Dynamic Inequalities Involving C-Monotonic Functions on Time Scales

open access: yesAxioms, 2022
In this paper, we establish some new dynamic inequalities involving C-monotonic functions with C≥1, on time scales. As a special case of our results when C=1, we obtain the inequalities involving increasing or decreasing functions (where for C=1, the 1 ...
Ghada AlNemer   +5 more
doaj   +2 more sources

Brief communication Decreasing fires in a Mediterranean region (1970–2010, NE Spain) [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2013
We analyse the recent evolution of fires in Catalonia (north-eastern Iberian Peninsula), a typical Mediterranean region. We examine a homogeneous series of forest fires in the period 1970–2010.
M. Turco   +4 more
doaj   +3 more sources

The Friction Properties of Firebrat Scales

open access: yesBiomimetics, 2019
Friction is an important subject for sustainability due to problems that are associated with energy loss. In recent years, micro- and nanostructured surfaces have attracted much attention to reduce friction; however, suitable structures are still under ...
Yuji Hirai   +8 more
doaj   +2 more sources

Trend Analysis of Historical Drought During 1929-2016 in Diyarbakır Station with Innovative Şen Method

open access: yesDoğal Afetler ve Çevre Dergisi, 2021
Drought, a natural disaster, affects various sectors such as water supply, hydropower generation, agriculture, and industry. It is important to determine temporal change of drought in order to use water resources effectively and efficiently.
Veysel Gümüş   +2 more
doaj   +1 more source

Liquidity management with decreasing returns to scale and secured credit line [PDF]

open access: yesFinance and Stochastics, 2016
This paper examines the dividend and investment policies of a cash constrained firm that has access to costly external funding. We depart from the literature by allowing the firm to issue collateralized debt to increase its investment in productive assets resulting in a performance sensitive interest rate on debt.
Pierre, Erwan   +2 more
openaire   +7 more sources

In full transition: Key impacts of vanishing mountain ice on water-security at local to global scales [PDF]

open access: yes, 2020
Icy mountains with their surface ice in glaciers and subsurface ice in permafrost constitute important water towers relating to multiple human needs for water security.
Weingartner, Rolf, Haeberli, Wilfried
core   +1 more source

Grazing-induced biodiversity loss impairs grassland ecosystem stability at multiple scales [PDF]

open access: yes, 2021
Livestock grazing is a major driver shaping grassland biodiversity, functioning and stability. Whether grazing impacts on grassland ecosystems are scale-dependent remains unclear.
Wilcox, Kevin R   +5 more
core   +2 more sources

A Robust Estimate of Continental‐Scale Terrestrial Carbon Sinks Using GOSAT XCO2 Retrievals

open access: yesGeophysical Research Letters, 2023
Satellite XCO2 retrievals could improve the estimates of surface carbon fluxes, but it remains unknown on what scales these estimates are robust. Here, we use the time‐dependent Bayesian synthesis top‐down method and prior net ecosystem exchanges (NEEs ...
Lingyu Zhang   +13 more
doaj   +1 more source

Theory of rapid variation on time scales with applications to dynamic equations [PDF]

open access: yes, 2010
summary:In the first part of this paper we establish the theory of rapid variation on time scales, which corresponds to existing theory from continuous and discrete cases. We introduce two definitions of rapid variation on time scales.
Vítovec, Jiří
core   +1 more source

Excitations Are Localized and Relaxation Is Hierarchical in Glass-Forming Liquids

open access: yesPhysical Review X, 2011
For several atomistic models of glass formers, at conditions below their glassy-dynamics–onset temperatures, T_{o}, we use importance sampling of trajectory space to study the structure, statistics, and dynamics of excitations responsible for structural ...
Aaron S. Keys   +4 more
doaj   +1 more source

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