Results 31 to 40 of about 3,205,738 (186)
A highly accurate DFT-based parameter estimator for complex exponentials
Journal of Telecommunications and Information Technology, 2006 A highly accurate DFT-based complex exponential parameter estimation algorithm is presented in this paper. It will be shown that for large number of samples and high signal to noise ratio (SNR), the phase estimation error variance performance is only 0 ...
Jeffrey Tsui, Sam Reisenfeld
doaj +1 more source
Frontiers in Energy Research, 2023 Highly-deviated wells are the key technology to reduce the risk of drilling accidents and improve the utilization of reservoirs. However, for reservoirs with complex lithology, highly-deviated wells are faced with the problems of geomechanical ...
Lihua Hao +6 more
doaj +1 more source
Simulation-based inference for parameter estimation of complex watershed simulators [PDF]
Hydrology and Earth System SciencesHigh-resolution, spatially distributed process-based (PB) simulators are widely employed in the study of complex catchment processes and their responses to a changing climate.
R. Hull +12 more
doaj +1 more source
Dynamic Analysis of a One-Parameter Chaotic System in Complex Field
IEEE Access, 2020 Chaotic dynamics analysis of complex-variable chaotic systems (CVCSs) is an important problem in real secure communication and encryption. In this paper, a simple one-parameter chaotic system in complex field is proposed, whose nonlinear terms are the ...
Xiu Zhao +3 more
doaj +1 more source
Complexity, periodicity and one-parameter subgroups [PDF]
Transactions of the American Mathematical Society, 2012 We use the variety of one-parameter subgroups to define a numerical invariant for a representation of an infinitesimal group scheme. For an indecomposable module M of complexity 1, this number is related to the period of M.
openaire +2 more sources
Directionality and Resultativity: The Cross-linguistic Correlation Revisited
Nordlyd: Tromsø University Working Papers on Language & Linguistics, 2007 Recent approaches to the cross-linguistic variation in the expressions of directed motion assume a tight correlation between adjectival resultative and directed motion constructions (e.g., Beck and Snyder 2001, Mateu and Rigau 2001; 2002, McIntyre 2004 ...
Minjeong Son
doaj +1 more source
Calibration for Parameter Estimation of Signals with Complex Noise via Nonstationarity Measure
Complexity, 2021 The signals in numerous complex systems of engineering can be regarded as nonlinear parameter trend with noise which is identically distributed random signals or deterministic stationary chaotic signals. The commonly used methods for parameter estimation
Zhiming Zhou, Zhengyun Zhou, Liang Wu
doaj +1 more source
Fixed-Parameter Complexity of λ-Labelings
Discrete Applied Mathematics, 1999 AbstractA λ-labeling of a graph G is an assignment of labels from the set {0,…,λ} to the vertices of G such that vertices at distance of at most two get different labels and adjacent vertices get labels which are at least two apart. We study the minimum value λ=λ(G) such that G admits a λ-labeling.
Fiala, Jiřı́ +2 more
openaire +1 more source
Complexity reduction for parameter-dependent linear systems [PDF]
2013 American Control Conference, 2013 We present a complexity reduction algorithm for a family of parameter-dependent linear systems when the system parameters belong to a compact semi-algebraic set. This algorithm potentially describes the underlying dynamical system with fewer parameters or state variables.
Farokhi, Farhad +2 more
openaire +2 more sources
Controller parameter optimization for complex industrial system with uncertainties
Measurement + Control, 2019 Proportional–integral–derivative control system has been widely used in industrial applications. For complex systems, tuning controller parameters to satisfy the process requirements is very challenging.
Heping Chen +3 more
doaj +1 more source