Results 121 to 130 of about 21,227 (266)

Evaluating Water–Energy–Food Nexus Strategies to Address Resource Scarcity in the Crocodile River Catchment, South Africa

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT The water–energy–food (WEF) nexus approach highlights the interdependence of water, energy and food resources, all of which play central roles in agriculture, especially irrigation. A WEF nexus lens was applied to Mpumalanga's Crocodile River catchment, a vital irrigation area that significantly contributes to South Africa's staple food ...
N. Masekwana   +3 more
wiley   +1 more source

Multiple positive solutions for equations involving critical Sobolev exponent in R^N

open access: yesElectronic Journal of Differential Equations, 1997
$$ -{ m div }(|abla u|^{m-2}abla u) = lambda h u^q+u^{m^*-1},quad{ m in}quad R^N,. $$ Using the Ekeland Variational Principle and the Mountain Pass Theorem, we show the existence of $lambda ^*>0$ such that there are at least two non-negative solutions ...
Claudianor Oliveira Alves
doaj  

The Art of Reception: Field Visits as Microcosms for Development Interventions of Non‐Governmental Organisations in Uganda

open access: yesJournal of International Development, EarlyView.
ABSTRACT Field visits are common phenomena with non‐governmental organisations in Uganda. During these visits, Ugandan national staff guide visitors on series of meetings and interactions in the field. Following an actor‐oriented approach and drawing on ethnographic data on 14 field visits, this paper understands the field visit as a microcosm for the ...
Caspar Edward Swinkels
wiley   +1 more source

Existence of solutions to a Hamiltonian system without convexity condition on the nonlinearity

open access: yesElectronic Journal of Differential Equations, 2004
We study a Hamiltonian system that has a superquadratic potential and is asymptotic to an autonomous system. In particular, we show the existence of a nontrivial solution homoclinic to zero.
Gregory S. Spradlin
doaj  

Le « Mountain Pass Theorem »

open access: yes, 2022
The "sente" (Latin semita, from se- (“apart”) and from the radical *mi, from meo (“to go”) has more to do with the weft, the crossroads, than with feeling or sensations. What will interest me here will therefore not be some umpteenth philosophical variation on the "sente" or the path, but a theorem of pure mathematics - the "Mountain Pass Theorem" (or ...
openaire   +1 more source

Scaling of Short‐Duration, Summer Rainfall Event Temporal Profiles With Warming Over Great Britain

open access: yesInternational Journal of Climatology, EarlyView.
Temperature scaling has been used to analyse the temporal profiles of short‐duration, summer rainfall events in Great Britain, for sub‐hourly observed and convection‐permitting climate model (CPM) data. Results show an increase with dewpoint temperature of event total rainfall depth, maximum intensity, concentration and front‐loading.
Alexandra Seawell   +6 more
wiley   +1 more source

Assessing the Performance of the Copernicus European Regional Reanalysis Dataset in Reproducing Extreme Weather Events in Poland

open access: yesInternational Journal of Climatology, EarlyView.
Global reanalyses, for example ERA5 and ERA5‐Land, tend to misrepresent the local‐scale weather extremes due to the limited spatial resolution. In this paper CERRA shows clear and consistent improvements over ERA5 and ERA5‐Land in representing extreme temperature and precipitation in Poland, particularly for localized and short‐lived heavy rainfall ...
Kinga Kulesza   +2 more
wiley   +1 more source

The most remarkable migrants-systematic analysis of the Western European insect flyway at a Pyrenean mountain pass. [PDF]

open access: yesProc Biol Sci
Hawkes WL   +9 more
europepmc   +1 more source

The Impacts of Southwest Indian Ocean Tropical Cyclones on Transient Weather in Réunion

open access: yesInternational Journal of Climatology, EarlyView.
Tropical cyclones which make passage near Réunion can have significant impacts on transient weather relative to long‐term means on the island. In this paper, these impacts were determined by a topological analysis of non‐landfalling tropical cyclones. The relationship between storm intensity, distance, duration, and seasonality plays an equal role in ...
Alexi M. Marinaki, Jennifer M. Fitchett
wiley   +1 more source

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