Results 51 to 60 of about 268,948 (168)

Multi‐UAV cooperative trajectory optimisation for a multi‐hop UAV relaying network

open access: yesElectronics Letters, 2021
In this letter, an unmanned aerial vehicle (UAV) assisted data collection scenario is considered in the Internet of Things (IoT), where a multi‐hop UAV relaying network is constructed for real‐time data transmission.
Cuntao Liu, Yan Guo, Ning Li, Bin Zhou
doaj   +1 more source

Urban Intersection Signal Control Based on Time-Space Resource Scheduling

open access: yesIEEE Access, 2021
This paper improves the level of urban traffic control by creasing the dimension of control variables. It focuses on roads rather than vehicles. A new space-time resource scheduling model and a bi-level optimization control method for urban intersections
Lili Zhang   +3 more
doaj   +1 more source

Metacommunity composition of web-spiders in a fragmented neotropical forest: relative importance of environmental and spatial effects. [PDF]

open access: yesPLoS ONE, 2012
The distribution of beta diversity is shaped by factors linked to environmental and spatial control. The relative importance of both processes in structuring spider metacommunities has not yet been investigated in the Atlantic Forest.
Ronei Baldissera   +2 more
doaj   +1 more source

Model identification and parametric adaptive control of hydraulic manipulator with neighborhood field optimization

open access: yesIET Control Theory & Applications, 2021
The model identification and uncertain parameters estimation are common control problems in multi‐DOF manipulator system, since both model parametric uncertainties and unknown external disturbance often degrade the output performance and the close‐loop ...
Qing Guo, Zhenlei Chen, Yan Shi, Gan Liu
doaj   +1 more source

Factors Controlling the Spatial and Temporal Variability in Groundwater 222Rn and U Levels [PDF]

open access: yesWater, 2019
Radon (222Rn) and uranium (U) measurements were conducted in 98 groundwater samples in Yongin area, Korea to identify the factors controlling their levels and spatial distributions. Groundwater samples were obtained from the different depth of wells used for drinking water and irrigation.
Soo Young Cho   +4 more
openaire   +1 more source

Spatial scale effects in environmental risk-factor modelling for diseases

open access: yesGeospatial Health, 2013
Studies attempting to identify environmental risk factors for diseases can be seen to extract candidate variables from remotely sensed datasets, using a single buffer-zone surrounding locations from where disease status are recorded. A retrospective case-
Ram K. Raghavan   +4 more
doaj   +1 more source

Factors controlling soil spatial variability in a native range landscape

open access: yes, 1984
Soils were characterized along three transects of the same catenary sequence within the semi-arid shortgrass (Bouteloua gracilis) steppe of north central Colorado. The objectives of the study were to: 1. Evaluate which factor or combination of factors (i.e. parent material, topography, biota) is/are the most important controls on soil development, soil
Paroussis, E. (Elias), author   +3 more
openaire   +2 more sources

Fractional order sliding mode control based on single parameter adaptive law for nano‐positioning of piezoelectric actuators

open access: yesIET Control Theory & Applications, 2021
A fractional order sliding mode control (FOSMC) based on single parameter adaptive law for nano‐positioning of Piezoelectric Actuators (PEAs) is proposed.
Sai Zhang   +3 more
doaj   +1 more source

Robust output trajectory linearisation control for a class of linear time‐varying systems

open access: yesIET Control Theory & Applications, 2021
The trajectory linearisation control of a non‐linear system using only output information and considering the presence of matched and unmatched uncertainties/perturbations is presented.
Rosalba Galván Guerra   +3 more
doaj   +1 more source

Assessment of Temperature and Elevation Controls on Spatial Variability of Rainfall in Iran [PDF]

open access: yesAtmosphere, 2017
With rainfall changes, hydrological process variability increases. This study predicts the potential effects of temperature and topography characteristics on rainfall spatial variability. Temperature and topography were considered as two effective factors that may influence monthly rainfall.
openaire   +2 more sources

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