Results 81 to 90 of about 260,355 (166)

Performance Assessment for Automatic Generation Control via Dynamic Models Identified From Extracted Data Segments

open access: yesEnergy Science &Engineering, EarlyView.
For the automatic generation control (AGC) systems, not all data segments are suitable for performance assessment and severe noises induce uncertainties in the estimates of performance metrics. For the first challenge, the proposed method extracts step‐pattern data segments, from which dynamic models are identified and performance metrics are estimated
Zijiang Yang   +3 more
wiley   +1 more source

Non‐Hydrostatic Model for Simulating Moving Bottom‐Generated Waves: A Shallow Water Extension With Quadratic Vertical Pressure Profile

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
In this article, we derive a non‐hydrostatic extension to the SWE to solve bottom‐generated waves along with its pressure relation. This relation is built on a linear vertical velocity assumption, leading us to a quadratic pressure profile, where we alternatively write it so that we can solve it by a projection method without ambiguity due to the ...
Kemal Firdaus, Jörn Behrens
wiley   +1 more source

Description and Convergence Order Analysis of the Finite Element‐Volume Spatial Discretization Method

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This article presents the principles of Finite Element‐Volume discretization and conducts an analysis of its properties and convergence orders. The discretization ensures local mass conservation, second‐order convergence for velocity, and first‐order convergence for pressure.
Maria Adela Puscas   +3 more
wiley   +1 more source

Multiple Seasonal Autoregressive Integrated Moving Average Models

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT Many empirical time series show periodic patterns. SARIMA models and exponential smoothing methods are classical approaches to account for seasonal dynamics. However, they allow to model just one periodic component, while several time series have multiple seasonality, with periodic components possibly tangled among them.
Francesco Lisi, Matteo Grigoletto
wiley   +1 more source

Deep Learning for Bond Yield Forecasting: The LSTM‐LagLasso

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT We present long short‐term memory (LSTM)‐LagLasso, a novel explainable deep learning approach applied to bond yield forecasting. Our method involves feature selection from a large universe of potential features and forecasts bond yields using dynamic LSTM networks.
Manuel Nunes   +4 more
wiley   +1 more source

Piecewise domains

open access: yesJournal of Algebra, 1972
Gordon, Robert, Small, L.W
openaire   +1 more source

A Sharper Ramsey Theorem for Constrained Drawings

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT Given a graph G $G$ and a collection C ${\mathscr{C}}$ of subsets of Rd ${{\mathbb{R}}}^{d}$ indexed by the subsets of vertices of G $G$, a constrained drawing of G $G$ is a drawing where each edge is drawn inside some set from C ${\mathscr{C}}$, in such a way that nonadjacent edges are drawn in sets with disjoint indices.
Pavel Paták
wiley   +1 more source

Effective 10‐bit OLED driver IC with 11‐bit DAC, double capacitor‐coupled adder, and offset calibration for enhanced panel driving

open access: yesJournal of the Society for Information Display, EarlyView.
An 11‐bit OLED driver IC employing a novel Double Capacitor‐Coupled Adder and Offset Calibration technique is proposed. The architecture achieves high‐speed parallel sampling and accurate driving with a maximum DVO of 2.43 mV and a slew rate of 9.9 V/us.
Changwhan Kim, Sewon Lee, Minjae Lee
wiley   +1 more source

Grazing Affects Soil Organic Carbon Stocks Directly and Indirectly Through Herbaceous Species Diversity in Sahelian Savanna Ecosystems

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT The impact of livestock grazing on soil organic carbon (SOC) stocks in the Sahel has been poorly documented due to a lack of data from different grazing intensities. This study evaluated SOC stocks under four grazing intensities within 0–30 cm soil depth in dry savanna ecosystems of Senegal.
Haftay Hailu Gebremedhn   +8 more
wiley   +1 more source

On the piecewise complexity of words

open access: yesActa Informatica
The piecewise complexity $h(u)$ of a word is the minimal length of subwords needed to exactly characterise $u$. Its piecewise minimality index $ρ(u)$ is the smallest length $k$ such that $u$ is minimal among its order-$k$ class $[u]_k$ in Simon's congruence. We initiate a study of these two descriptive complexity measures.
Schnoebelen, Philippe, Vialard, Isa
openaire   +2 more sources

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