Results 61 to 70 of about 14,001 (154)

Developing Allometric Equations for Teak Plantations Located in the Coastal Region of Ecuador from Terrestrial Laser Scanning Data [PDF]

, 2019
Traditional studies aimed at developing allometric models to estimate dry above-ground biomass (AGB) and other tree-level variables, such as tree stem commercial volume (TSCV) or tree stem volume (TSV), usually involves cutting down the trees.
Aguilar Torres, Fernando José, Aguilar Torres, Manuel, Nemmaoui, Abderrahim, Peñalver, Alberto, Rivas, José R.   +4 more
core   +1 more source

Identification and Predictive Control by p-norm Minimization

Acta Polytechnica, 2006
Real time system parameter estimation from the set of input-output data is usually solved by minimization of quadratic norm errors of system equations – known in the literature as least squares (LS) or its modification as total least squares (TLS) or ...
J. Pekař, J. Štecha
doaj  

Deformation analysis by an improved similarity transformation

Applied Computing and Geosciences
In this contribution, deformation analysis is rigorously performed by a non-linear 3-D similarity transformation. In contrast to traditional methods based on linear least-squares (LLS), here we solve a non-linear problem without any linearization.
Vahid Mahboub
doaj   +1 more source

Underdetermined Wideband DOA Estimation for Off-Grid Sources with Coprime Array Using Sparse Bayesian Learning

Sensors, 2018
Sparse Bayesian learning (SBL) is applied to the coprime array for underdetermined wideband direction of arrival (DOA) estimation. Using the augmented covariance matrix, the coprime array can achieve a higher number of degrees of freedom (DOFs) to ...
Yanhua Qin, Yumin Liu, Jianyi Liu, Zhongyuan Yu   +3 more
doaj   +1 more source

Improving Ensemble Forecasting Using Total Least Squares and Lead-Time Dependent Bias Correction

Atmosphere, 2020
Numerical weather prediction (NWP) models produce a quantitative precipitation forecast (QPF), which is vital for a wide range of applications, especially for accurate flash flood forecasting.
Aida Jabbari, Deg-Hyo Bae
doaj   +1 more source

An Adaptive TLS-ESPRIT Algorithm Based on an S-G Filter for Analysis of Low Frequency Oscillation in Wide Area Measurement Systems

IEEE Access, 2019
In this paper, a two-stage mode identification algorithm including preprocessing and identification steps is introduced to solve the problems of measuring noise and inaccurate mode identification in the analysis of low-frequency oscillation (LFO) in a ...
Jian Chen, Tao Jin, Mohamed A. Mohamed, Mengqi Wang   +3 more
doaj   +1 more source

A glassy contribution to the heat capacity of hcp $^4$He solids

, 2010
We model the low-temperature specific heat of solid $^4$He in the hexagonal closed packed structure by invoking two-level tunneling states in addition to the usual phonon contribution of a Debye crystal for temperatures far below the Debye temperature ...
A. Driessen, A. Penzev, A. Penzev, A.C. Clark, A.C. Clark, A.F. Andreev, A.J. Leggett, A.S.C. Rittner, A.S.C. Rittner, A.V. Balatsky, Alexander V. Balatsky, B. Hunt, C.A. Burns, C.A. Burns, D.A. Ackerman, D.S. Greywall, D.S. Greywall, D.S. Greywall, E. Blackburn, E. Kim, E. Kim, E. Kim, E.C. Helmets, E.O. Edwards, G. Bonfait, G.V. Chester, I.A. Todoshchenko, I.A. Todoshchenko, J. Day, J. Day, J. Day, J. Day, J. Jäckle, J. Zimmermann, J.C. Lasjaunias, J.C. Lasjaunias, J.M. Goodkind, J.P. Frank, J.T. West, Jung-Jung Su, L. Reatto, M. Kondo, M.A. Paalanen, M.J. Graf, M.J. Graf, M.W. Ray, M.W. Ray, Matthias J. Graf, P.W. Anderson, P.W. Anderson, S. Balibar, S. Sasaki, V.N. Grigor’ev, V.N. Grigor’ev, W.A. Phillips, X. Lin, X. Lin, X. Lin, Y. Aoki, Y. Aoki, Z. Nussinov   +60 more
core   +1 more source

An LFT/SDP approach to the uncertainty analysis for state [PDF]

, 2002
A state estimator is an algorithm that computes the current state of a time-varying system from on-line measurements. Physical quantities such as measurements and parameters are characterised by uncertainty.
Nagar, A, Powell, R S
core  

RSSI-Based Self-Localization with Perturbed Anchor Positions

, 2017
We consider the problem of self-localization by a resource-constrained mobile node given perturbed anchor position information and distance estimates from the anchor nodes. We consider normally-distributed noise in anchor position information.
Arablouei, Reza, Bergmann, Neil W., Jurdak, Raja, Kumar, Vikram, Kusy, Branislav   +4 more
core   +1 more source

Scaled weighted total least-squares adjustment for partial errors-in-variables model

Journal of Geodetic Science, 2016
Scaled total least-squares (STLS) unify LS, Data LS, and TLS with a different choice of scaled parameter. The function of the scaled parameter is to balance the effect of random error of coefficient matrix and observation vector for the estimate of ...
Zhao J.
doaj   +1 more source