Results 1 to 10 of about 36,105,653 (286)

From meteorological to agricultural drought: Propagation time and probabilistic linkages

open access: yesJournal of Hydrology: Regional Studies, 2023
Study region: Yangtze River Basin, China Study focus: As agricultural drought originates from meteorological drought, exploring the propagation from meteorological to agricultural drought is an important step in providing early warning of agricultural ...
Zhengguang Xu   +4 more
doaj   +4 more sources

Hydrological Drought Instantaneous Propagation Speed Based on the Variable Motion Relationship of Speed‐Time Process

open access: yesWater Resources Research, 2018
It is difficult to predict and track the propagation of a hydrological drought because it is hard to determine its propagation speed. We propose a useful framework for calculating the hydrological drought instantaneous propagation speed which includes ...
Jiefeng Wu   +4 more
doaj   +3 more sources

A new approach to quantify propagation time from meteorological to hydrological drought

open access: yesJournal of Hydrology, 2021
Of particular importance in a world of increasing water scarcity is the temporal and spatial relationship between a shortage in rainfall—meteorological drought—and a shortage in available water, or hydrological drought.
Ye Tuo, Markus Disse
exaly   +2 more sources

Study on the propagation law of meteorological drought to hydrological drought under variable time Scale: An example from the Yellow River Water Supply Area in Henan

open access: yesEcological Indicators, 2023
To study the propagation law of meteorological droughts to hydrological droughts under variable time scales, and to reveal the synchronisation gap and lag time of hydrological droughts compared to meteorological droughts, and the lag degree of ...
Fang Wan   +4 more
doaj   +3 more sources

A Reevaluation of Time Domain Reflectometry Propagation Time Determination in Soils

open access: yesVadose Zone Journal, 2014
Time domain reflectometry (TDR) is an established method for the determination of apparent dielectric permittivity and water content in soils. Using current waveform interpretation procedures, signal attenuation and variation in dielectric media ...
R.C. Schwartz   +3 more
doaj   +2 more sources

Connected zero forcing sets and connected propagation time of graphs [PDF]

open access: yesTransactions on Combinatorics, 2020
The zero forcing number $Z(G)$ of a graph $G$ is the minimum cardinality of a set $S$ with colored (black) vertices which forces the set $V(G)$ to be colored (black) after some times.
Maryam Khosravi   +2 more
doaj   +1 more source

Characterization of Parasitic Impedance in PCB Using a Flexible Test Probe Based on a Curve-Fitting Method

open access: yesIEEE Access, 2021
Switching in power semiconductors with emerging materials such as silicon carbide (SiC) leads to undesired overvoltages and oscillations that limit switching frequency, largely due to impedance in the current commutation loop.
A. Llamazares   +2 more
doaj   +1 more source

Sharp uniform-in-time propagation of chaos [PDF]

open access: yesProbability theory and related fields, 2022
We prove the optimal rate of quantitative propagation of chaos, uniformly in time, for interacting diffusions. Our main examples are interactions governed by convex potentials and models on the torus with small interactions.
D. Lacker, Luc Le Flem
semanticscholar   +1 more source

Investigation of the propagation of meteorological to hydrological drought and water required to recover from drought over Ethiopian basins

open access: yesJournal of Water and Climate Change, 2023
This study investigates drought propagation from meteorological to hydrological and streamflow required to recover from drought in four sub-basins: Genale, Tekeze, Awash, and Baro basins of Ethiopia.
Tegegn Kassa Beyene   +3 more
doaj   +1 more source

Demonstration of propagation-invariant 3D space-time wave packets [PDF]

open access: yesEPJ Web of Conferences, 2022
We present the first demonstration of propagation-invariant space-time (ST) wave packets localized in all dimensions - 2D space and 1D time. By introducing orbital-angular-momentum into the wave packets, we produce propagation-invariant ST-OAM wave ...
Yessenov Murat   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy