Factors Controlling the Spatial and Temporal Variability in Groundwater 222Rn and U Levels [PDF]
Water, 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.
Cho, Soo Young +4 more
openaire +2 more sources
Species sorting drives variation of boreal lake and river macrophyte communities [PDF]
, 2015 Metacommunity paradigms are increasingly studied to explain how environmental control and spatial patterns determine variation in community composition. However, the relative importance of these patterns on biological assemblages among different habitats
Alahuhta, J. +4 more
core +1 more source
IET Control Theory & Applications, 2021 Over the last years, the development and control of Autonomous Underwater Vehicles with attached robotic manipulators, also called Underwater Vehicle Manipulator System (UVMS), has gained significant research attention.
Alexandros Nikou +3 more
doaj +1 more source
Managing Spatial and Temporal Variability in Irrigated Agriculture Through Adaptive Control [PDF]
Australian Journal of Multi-Disciplinary Engineering, 2009 Spatial variability in crop production occurs as a result of spatial and temporal variations in soil structure and fertility; soil physical, chemical and hydraulic properties; irrigation applications; pests and diseases; plant genetics; and local microclimate.
Smith, R. J. +3 more
openaire +1 more source
Hydrological and environmental variables outperform spatial factors in structuring species, trait composition, and beta diversity of pelagic algae [PDF]
, 2018 There has been increasing interest in algae-based bioassessment, particularly, trait-based approaches are increasingly suggested. However, the main drivers, especially the contribution of hydrological variables, of species composition, trait composition,
Fohrer, Nicola +6 more
core +1 more source
Finite‐time convergence for bilateral teleoperation systems with disturbance and time‐varying delays
IET Control Theory & Applications, 2021 This paper addresses the robust finite‐time sliding mode control algorithms for nonlinear bilateral teleoperators in the presence of variable time delays and disturbances.
Phuong Nam Dao +2 more
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A combined model reference adaptive control law for multirotor UAVs
IET Control Theory & Applications, 2021 Model reference adaptive control (MRAC) offers the potential to adapt in real‐time to changes in the performance of small unmanned air vehicles. There are significant challenges with their use, however, primarily in the implementation and assurance of ...
Alia Farhana Abdul Ghaffar +2 more
doaj +1 more source
Efficient Sum-of-Sinusoids based Spatial Consistency for the 3GPP New-Radio Channel Model
, 2018 Spatial consistency was proposed in the 3GPP TR 38.901 channel model to ensure that closely spaced mobile terminals have similar channels. Future extensions of this model might incorporate mobility at both ends of the link.
Burkhardt, Frank +3 more
core +1 more source
Correlations of control variables in variational data assimilation [PDF]
, 2011 Variational data assimilation systems for numerical weather prediction rely on a transformation of model variables to a set of control variables that are assumed to be uncorrelated.
Bannister +23 more
core +1 more source
Multi‐variable finite‐time observer‐based adaptive‐gain sliding mode control for fixed‐wing UAV
IET Control Theory & Applications, 2021 This paper presents a multivariable finite‐time observer‐based adaptive‐gain sliding mode control scheme for a fixed‐wing unmanned aerial vehicle (UAV) subject to the unmeasurable angular rates and unknown matched/unmatched disturbance.
Chaofan Zhang, Guoshan Zhang, Qi Dong
doaj +1 more source