{"type": "FeatureCollection", "features": [{"id": "10.1016/j.agwat.2023.108391", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:15:21Z", "type": "Journal Article", "created": "2023-06-02", "title": "Optimizing relative root-zone water depletion thresholds to maximize yield and water productivity of winter wheat using AquaCrop", "description": "Determination of relative root-zone water depletion (RRWD) thresholds to trigger irrigation is crucial to create optimal irrigation schedules targeting maximum yield and/or water productivity with limited water supply for a crop. In this study, a numerical procedure to determine RRWD thresholds was developed through coupling AquaCrop software with genetic-simplex algorithms. Using a two-year field lysimetric experiment for winter wheat conducted in the North China Plain (NCP), AquaCrop adequately simulated canopy cover, final aboveground biomass, grain yield, seasonal evapotranspiration, and soil water storage, with the normalized root mean squared error (NRMSE) smaller than 15 % and determination coefficient (R2) larger than 0.84. The global optimum range of RRWD thresholds was preliminarily determined using the genetic algorithm, and subsequently final RRWD thresholds were optimized by fine tuning using the simplex algorithm. The RRWD threshold combinations (composed of the RRWD thresholds to trigger different sequential irrigation events) for varying number of irrigation events (i.e.1\u20134) were optimized based on 39 years of historical meteorological data, and the effects of climate change on the optimal crop yield (Ya, opt), water productivity (WPopt), and the combinations of optimized RRWD threshold (RRWDopt) were investigated. The results indicated that both Ya, opt and WPopt generally increased with time showing a tendency of gradually elevated annual CO2 concentration and seasonal average effective temperature. Irrespective of the number of irrigation events during the winter wheat growing season, the differences of RRWDopt for different combinations of irrigation sequence and event in the same kind of hydrological year were relatively small, with a coefficient of variation consistently less than 23 % and a mean of 8 %. When combinations of mean RRWDopt were applied into AquaCrop to trigger irrigation for winter wheat in various hydrological years, the simulated yield (Ya, sim) and water productivity (WPsim) under 1\u20134 irrigation events were found to be comparable to their respective optimums (Ya, opt and WPopt), with all the values of Ya, sim (WPsim) falling in the range of 92 %Ya, opt (90 %WPopt). Therefore, the mean RRWDopt should be helpful to formulate rational irrigation management strategies of winter wheat under changing climatic conditions in the NCP.", "keywords": ["HD9000-9495", "2. Zero hunger", "0106 biological sciences", "Evapotranspiration", "Agriculture (General)", "04 agricultural and veterinary sciences", "Agricultural industries", "15. Life on land", "01 natural sciences", "Irrigation scheduling", "6. Clean water", "S1-972", "Optimization algorithm", "13. Climate action", "Climate change", "0401 agriculture", " forestry", " and fisheries", "Crop model"]}, "links": [{"href": "https://doi.org/10.1016/j.agwat.2023.108391"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agricultural%20Water%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agwat.2023.108391", "name": "item", "description": "10.1016/j.agwat.2023.108391", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agwat.2023.108391"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-08-01T00:00:00Z"}}, {"id": "11572/356726", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:24:58Z", "type": "Journal Article", "created": "2022-07-22", "title": "Double restabilization and design of force\u2013displacement response of the extensible elastica with movable constraints", "description": "Open AccessA highly deformable rod, modelled as the extensible elastica, is connected to a movable clamp at one end and to a pin sliding along a frictionless curved profile at the other. Bifurcation analysis shows that axial compliance provides a stabilizing effect in compression, but unstabilizing in tension. Moreover, with varying the constraint's curvature at the origin and the axial vs bending rod's stiffness, in addition to possible buckling in tension, the structure displays none, two, or even four bifurcation loads, the last two associated only to the first buckling mode in compression. Therefore, the straight configuration may lose and recover stability one or two times, thus evidencing single and double restabilization, a feature never observed before. By means of the closed-form solution for the extensible elastica, the quasi-static behaviour of the structure is analytically described under large rotations and axial strain. The presented solution is exploited, together with an { it ad hoc} developed optimization algorithm, to design the shape of the constraint's profile necessary to obtain a desired force-displacement curve, so to realize a force-limiter or a mechanical device capable of delivering a complex force response upon application of a continuous displacement in both positive and negative direction.", "keywords": ["Elastic materials", "Bifurcation and buckling", "bifurcation analysis", "Classical Physics (physics.class-ph)", "FOS: Physical sciences", "optimization algorithm", "Physics - Classical Physics", "02 engineering and technology", "Euler buckling; tensile buckling; multistability; frictionless constraint", "Euler buckling", "01 natural sciences", "tensile buckling", "multistability", "Rods (beams", " columns", " shafts", " arches", " rings", " etc.)", "Optimization of other properties in solid mechanics", "0101 mathematics", "0210 nano-technology", "frictionless constraint"]}, "links": [{"href": "https://iris.unitn.it/bitstream/11572/356726/1/1-s2.0-S0997753822001887-main.pdf"}, {"href": "https://doi.org/11572/356726"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Mechanics%20-%20A/Solids", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11572/356726", "name": "item", "description": "11572/356726", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11572/356726"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-07-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Optimization+algorithm&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Optimization+algorithm&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Optimization+algorithm&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Optimization+algorithm&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-07-27T12:51:36.816199Z"}