Results 41 to 50 of about 1,173 (164)

Phenological Variation and Evolution Across Space and Time in the Scarlet Monkeyflower (<i>Erythranthe cardinalis</i>). [PDF]

Ecol Evol
Climate change is altering ecological dynamics, particularly in species with latitudinal range variation. This study investigates how the scarlet monkeyflower's flowering phenology has evolved in response to recent droughts in California. We find that southern populations are flowering later and larger, while northern populations flower earlier and ...
Waits J, Larson N, Moazed MC, Regan A, Strebler M, Flores-Rentería L.   +5 more
europepmc   +2 more sources

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 Analysis for Habitat Mapping in a Special Area of Conservation Using Sentinel-2 Time-Series Data

Remote Sensing, 2022
The mapping and monitoring of natural and semi-natural habitats are crucial activities and are regulated by European policies and regulations, such as the 92/43/EEC. In the Mediterranean area, which is characterized by high vegetational and environmental
Simone Pesaresi, Adriano Mancini, Giacomo Quattrini, Simona Casavecchia   +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

Circularly Polarized High-Gain Fabry-Perot Cavity Antenna with High Sidelobe Suppression

Applied Sciences, 2023
The proposed design approach improves the circularly polarized Fabry-Perot cavity antenna (CP-FPCA) by increasing gain and sidelobe suppression (SLS) while reducing the axial ratio (AR) and cross-polarization levels.
Muhammad Hussain, Kyung-Geun Lee, Dongho Kim   +2 more
doaj   +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

Rest-activity profiles among U.S. adults in a nationally representative sample: a functional principal component analysis

International Journal of Behavioral Nutrition and Physical Activity, 2022
Background The 24-h rest and activity behaviors (i.e., physical activity, sedentary behaviors and sleep) are fundamental human behaviors essential to health and well-being.
Qian Xiao, Jiachen Lu, Jamie M. Zeitzer, Charles E. Matthews, Pedro F. Saint-Maurice, Cici Bauer   +5 more
doaj   +1 more source

Copula Dynamic Conditional Correlation and Functional Principal Component Analysis of COVID-19 Mortality in the United States

Axioms, 2022
This paper shows a visual analysis and the dependence relationships of COVID-19 mortality data in 50 states plus Washington, D.C., from January 2020 to 1 September 2022.
Jong-Min Kim
doaj   +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

Trajectory modeling of gestational weight: A functional principal component analysis approach. [PDF]

PLoS ONE, 2017
Suboptimal gestational weight gain (GWG), which is linked to increased risk of adverse outcomes for a pregnant woman and her infant, is prevalent. In the study of a large cohort of Canadian pregnant women, our goals are to estimate the individual weight ...
Menglu Che, Linglong Kong, Rhonda C Bell, Yan Yuan   +3 more
doaj   +1 more source