Results 51 to 60 of about 150 (103)

Vectorizing Human Gait: An Adaptive Kinematic Embedding for Monitoring and Intent Detection

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering
Lower-limb exoskeletons offer high-dose gait rehabilitation, but their effectiveness depends on accurate coordination between the user and robotic controller. We propose a real-time method to estimate and represent the user’s intended motions from
Lyndon Tang, Arash Arami
doaj   +1 more source

NOISE REDUCTION AND INTERPRETATION OF ICE-PENETRATING RADAR DATA IN ANTARCTIC ICE SHEET BASED ON VARIATIONAL MODE DECOMPOSITION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Ice-penetrating radar is an effective method for studying the subglacial bedrock and ice information within the Antarctic ice sheet. Because of the low conductivity of ice and the relatively uniform composition of ice sheets in the polar region, ice ...
X. Tang, S. Cheng, J. Guo
doaj   +1 more source

Adaptive Control of Quadrotors in Uncertain Environments

open access: yesEng
The problem addressed in this article consists of the motion control of a quadrotor affected by model disturbances and uncertainties. In order to tackle model uncertainty, adaptive control based on reinforcement learning is used.
Daniel Leitão   +2 more
doaj   +1 more source

Near real-time estimation of ionosphere vertical total electron content from GNSS satellites using B-splines in a Kalman filter [PDF]

open access: yesAnnales Geophysicae, 2017
Although the number of terrestrial global navigation satellite system (GNSS) receivers supported by the International GNSS Service (IGS) is rapidly growing, the worldwide rather inhomogeneously distributed observation sites do not allow the generation
E. Erdogan   +3 more
doaj   +1 more source

Forecasting Lattice and Point Spatial Data: Comparison of Unilateral and Multilateral SAR Models

open access: yesForecasting
Spatial auto-regressive (SAR) models are widely used in geosciences for data analysis; their main feature is the presence of weight (W) matrices, which define the neighboring relationships between the spatial units.
Carlo Grillenzoni
doaj   +1 more source

Distance Dependent Localization Approach in Oil Reservoir History Matching: A Comparative Study [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2014
To perform any economic management of a petroleum reservoir in real time, a predictable and/or updateable model of reservoir along with uncertainty estimation ability is required. One relatively recent method is a sequential Monte Carlo implementation of
Ebrahim Biniaz Delijani   +2 more
doaj  

Application of a Multi-Objective Optimization Algorithm Based on Differential Grouping to Financial Asset Allocation

open access: yesApplied Sciences
In the era of big data and rapid information growth, investors encounter a complex financial environment characterized by extensive data, conflicting investment objectives, and markets that are unpredictable due to economic and policy fluctuations. Hence,
Peng Jia   +5 more
doaj   +1 more source

Fast Riemannian Manifold Hamiltonian Monte Carlo for Hierarchical Gaussian Process Models

open access: yesMathematics
Hierarchical Bayesian models based on Gaussian processes are considered useful for describing complex nonlinear statistical dependencies among variables in real-world data.
Takashi Hayakawa, Satoshi Asai
doaj   +1 more source

How peer review constrains cognition: on the frontline in the knowledge sector

open access: yesFrontiers in Psychology, 2015
Peer-review is neither reliable, fair, nor a valid basis for predicting ‘impact’: as quality control, peer-review is not fit for purpose. Given this consensus, I propose another framing: while a normative social process, peer-review also shapes the ...
Stephen John Cowley
doaj   +1 more source

The Sloping Mire Soil-Landscape of Southern Ecuador: Influence of Predictor Resolution and Model Tuning on Random Forest Predictions

open access: yesApplied and Environmental Soil Science, 2014
The sloping mire landscape of the investigation area, in the southern Andes of Ecuador, is dominated by stagnic soils with thick organic layers. The recursive partitioning algorithm Random Forest was used to predict the spatial water stagnation pattern ...
Mareike Ließ   +2 more
doaj   +1 more source

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