Results 21 to 30 of about 1,745,742 (268)

Computing the Geometric Intersection Number of Curves [PDF]

open access: yesJournal of the ACM, 2019
The geometric intersection number of a curve on a surface is the minimal number of self-intersections of any homotopic curve, i.e., of any curve obtained by continuous deformation. Given a curve c represented by a closed walk of length at most ℓ on a combinatorial surface of complexity n , we
Despré, Vincent, Lazarus, Francis
openaire   +7 more sources

Comparison of rainfall-runoff models for design discharge assessment in a small ungauged catchment

open access: yesSoil and Water Research, 2013
Design discharges in a small experimental catchment in Žarošice (Czech Republic) were evaluated using various methods for peak discharge assessment applying 24-h storm rainfalls reduced to short duration.
Darina Vaššová
doaj   +1 more source

A DIGITAL LINKING NUMBER FOR DISCRETE CURVES [PDF]

open access: yesInternational Journal of Pattern Recognition and Artificial Intelligence, 2001
A topological invariant, analogous to the linking number as defined in knot theory, is defined for pairs of digital closed paths of ℤ3. This kind of invariant is very useful for proofs which involve homotopy classes of digital paths. Indeed, it can be used, for example, in order to state the connection between the tunnels in an object and the ones in ...
Fourey, Sébastien, Malgouyres, Rémy
openaire   +2 more sources

The a-Number of Hyperelliptic Curves [PDF]

open access: yes, 2018
It is known that for a smooth hyperelliptic curve to have a large $a$-number, the genus must be small relative to the characteristic of the field, $p>0$, over which the curve is defined. It was proven by Elkin that for a genus $g$ hyperelliptic curve $C$ to have $a_C=g-1$, the genus is bounded by ...
openaire   +2 more sources

Curve number estimation using rainfall and runoff data from five catchments in Sudan

open access: yesOpen Geosciences, 2022
The United States Natural Resources Conservation Services Curve Number (NRCS-CN) method uses the CN and rainfall to calculate runoff. However, there are still some uncertainties in the method, such as choosing the most appropriate CN value.
Ibrahim Salma   +3 more
doaj   +1 more source

Effects of urbanization on groundwater level in aquifers of Binh Duong Province, Vietnam

open access: yesJournal of Groundwater Science and Engineering, 2021
The purpose of this paper was to assess the impact of urbanization on the groundwater level (GWL) in aquifers of Binh Duong (BD) Province. The research method is to analyze the trend of GWL, the recharge capacity of surface over time and the relationship
Van Viet Luong
doaj   +1 more source

Placement of data transmission equipment in the flood warning system based on the Internet of Things (case study : Jiroft Dam Basin) [PDF]

open access: yesJournal of Hydraulic Structures
Floods are one of the most damaging natural disasters that have increased in frequency, severity and resulting damages in recent years in Iran and around the world.
Marzieh Mohseni   +2 more
doaj   +1 more source

Analysis on the change of runoff curve number influence to surface flow debit using ALOS AVNIR-2 data imagery

open access: yesJurnal Pendidikan Geografi, 2022
One part of the hydrologic cycle which has a major influence in increasing the amount of river flow discharge is surface runoff. The higher surface runoff discharge, causing the possibility of surface flooding, therefore required an empirical model that ...
Wenang Anurogo   +5 more
doaj   +1 more source

Triangular Numbers and Elliptic Curves

open access: yesRocky Mountain Journal of Mathematics, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chahal, Jasbir, Top, Jaap
openaire   +4 more sources

Development and performance evaluation of SCS-CN based hybrid model

open access: yesWater Science and Technology, 2022
In this study, a hybrid approach has been used to increase the predictive efficiency of the SCS-CN model. A recently proposed Ajmal model (developed after randomized configuration) that ignored initial abstraction and maximum potential retention has been
Pankaj Upreti, C. S. P. Ojha
doaj   +1 more source

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