Results 21 to 30 of about 705 (114)

Recognition and Characterization of Forest Plant Communities through Remote-Sensing NDVI Time Series

Diversity, 2020
Phytosociology is a reference method to classify vegetation that relies on field data. Its classification in hierarchical vegetation units, from plant associations to class level, hierarchically reflects the floristic similarity between different sites ...
Simone Pesaresi, Adriano Mancini, Simona Casavecchia   +2 more
doaj   +1 more source

Análisis de componentes principales funcionales en series de tiempo económicas (Analysis of principal functional components in economic time series)

GECONTEC: Revista Internacional de Gestión del Conocimiento y la Tecnología, 2015
Spanis abstract. El análisis de datos funcionales ha cobrado gran relevancia en los últimos años, convirtiéndose en un importante campo de investigación en la Estadística.
Cristina O. Chávez Chong, Jesús E. Sánchez García , José DelaCerda Gastélum   +2 more
doaj   +4 more sources

A multi-stage modelling framework for accurate early-life SoH and EOL prediction [PDF]

EES Batteries
Accurate estimation of the State of Health (SOH) of lithium-ion batteries is essential to ensure their reliable performance and operational safety. This study integrates functional principal component analysis (FPCA) of incremental capacity (ICA) curves ...
Ahmed Abdelrahman, Jie Liu
doaj   +1 more source

Using functional principal component analysis (FPCA) to quantify sitting patterns derived from wearable sensors

International Journal of Behavioral Nutrition and Physical Activity
Abstract Background Sedentary behavior (SB) is a recognized risk factor for many chronic diseases. ActiGraph and activPAL are two commonly used wearable accelerometers in SB research. The former measures body movement and the latter measures body posture.
Rong W. Zablocki, Sheri J. Hartman, Chongzhi Di, Jingjing Zou, Jordan A. Carlson, Paul R. Hibbing, Dori E. Rosenberg, Mikael Anne Greenwood-Hickman, Lindsay Dillon, Andrea Z. LaCroix, Loki Natarajan   +10 more
openaire   +5 more sources

The Distributional Effects of Economic Uncertainty*

International Economic Review, EarlyView.
ABSTRACT We study the distributional implications of uncertainty shocks by developing a model that links macroeconomic aggregates to the US distribution of earnings and consumption. Our findings suggest that the fraction of low‐earning workers decreases initially, while the share of households reporting low consumption increases.
Florian Huber, Massimiliano Marcellino, Tommaso Tornese   +2 more
wiley   +1 more source

Extracellular Matrix Remodeling in Actinic Cheilitis and Lip Squamous Cell Carcinoma: A Cross‐Sectional Study

Oral Diseases, EarlyView.
ABSTRACT Background Actinic cheilitis is a precursor to lip squamous cell carcinoma. How ultraviolet‐induced stromal degeneration relates to invasion‐related extracellular matrix markers remains unclear. This study investigated basophilic degeneration of collagen, solar elastosis, fibronectin, tenascin‐C, and podoplanin in both lesions.
Caroline Alfaia‐Silva, Polyane Caroline Arruda de Farias, Fernanda de Mello da Silva, Lidiane de Paula Ribeiro, Ericles de Paiva Vieira, Elena Riet Correa Rivero, Filipe Modolo   +6 more
wiley   +1 more source

Functional Data Analysis of Particulate Matter (PM₁₀) in Chungbuk, Korea: An Application of Penalized B-Spline Smoothing and Functional Inference

Axioms
Functional data analysis (FDA) provides a framework for representing high-frequency or longitudinal observations as smooth functions, enabling principled dimension reduction and feature extraction.
Eun-Ji Lee, Ji Hyeon Lee, Hee-Jung Jee, Jae-Hwan Jhong   +3 more
doaj   +1 more source

A Functional Principal Component Analysis Framework for Vibration‐Based Structural Condition Assessment of Highway Bridge Spans

Environmetrics, Volume 37, Issue 6, September 2026.
ABSTRACT The management of lifespan and safety performance, aimed at ensuring the structural integrity and durability of highway infrastructure, has become an increasingly important area of research. In civil engineering, traditional methods for evaluating dynamic behavior, such as Operational Modal Analysis and the Peak Picking technique, often fall ...
Gianna Agrò, Mariantonietta Ruggieri
wiley   +1 more source

Intraday Functional PCA Forecasting of Cryptocurrency Returns

Journal of Forecasting, Volume 45, Issue 5, Page 2186-2212, August 2026.
ABSTRACT We study the functional PCA (FPCA) forecasting method in application to functions of intraday returns on Bitcoin. We show that improved interval forecasts of future return functions are obtained when the conditional heteroscedasticity of return functions is taken into account.
Joann Jasiak, Cheng Zhong
wiley   +1 more source

Disproportional ventilatory response to incremental exercise in individuals with cerebral palsy

Developmental Medicine &Child Neurology, Volume 68, Issue 8, Page 1139-1151, August 2026.
Individuals with cerebral palsy demonstrate a disproportionate ventilatory response during incremental exercise. Compared with typically developing peers, respiratory frequency increases earlier and at comparable exercise intensities, contributing to higher perceived exertion and reduced ventilatory efficiency. At task failure, respiratory frequency is
Linnéa Corell, Emma Hjalmarsson, Rodrigo Fernandez‐Gonzalo, Annika Kruse, Sebastian Edman, Asta Kizyte, Rouli Wang, Arnoud Edelman Bos, Peder Sörensson, Eva Pontén, Petra E. M. van Schie, Annemieke I. Buizer, Jessica Norrbom, Daniele A. Cardinale, Ferdinand von Walden   +14 more
wiley   +1 more source