Results 71 to 80 of about 119,701 (292)

Hybrid IIR/FIR Wavelet Filter Banks for ECG Signal Denoising [PDF]

open access: yes, 2018
ElectroCardioGram (ECG) signals are usually corrupted with various types of artifacts which degrade the signal quality and might lead to misdiagnosis.
Eminaga, Y., Kale, I., Coskun, A.
core   +1 more source

Sparse maximum likelihood estimation of regression models

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract For regression model selection and estimation, we study a small set of candidate models of maximum likelihood from which all information criteria such as the Akaike information criterion (AIC) and the Bayesian information criterion (BIC) choose their models.
Min Tsao
wiley   +1 more source

System-and-structural features of the phytobiotaof the fir-beech forests of the Pokuttia Carpathians

open access: yesНаукові праці Лісівничої академії наук України
The article presents the results of the system-structural analysis of the flora of fir-beech forests of the low mountain terrain of the Pokuttia Carpathians.
Myroslava Soroka   +4 more
doaj   +1 more source

Study of Damage to Shutters Exposed to a Vegetation Fire: Definition of Vulnerability Thresholds

open access: yesFire and Materials, EarlyView.
ABSTRACT This study examines the fire behavior of wooden, PVC, and aluminum shutters through laboratory and large‐scale experiments. Laboratory tests were conducted using a cone calorimeter to assess the ignitability of the PVC and wooden shutters, focusing on the critical heat flux of ignition, ignition time and critical Flux Time Product (FTP ...
C. Luciani   +5 more
wiley   +1 more source

The Effect of Different Relative Humidity Conditions on Mechanical Properties of Historical Fir Wood Under the Influence of Natural Aging

open access: yesDrvna Industrija
Wood undergoes degradation and aging due to various physical and biological factors throughout its lifespan. Among these factors, environmental conditions such as relative humidity, temperature, rainfall, and UV radiation play a crucial role in the ...
Minel Ahu Kara Alasalvar   +4 more
doaj   +1 more source

Organosolv Fractionation of Softwood Biomass for Biofuel and Biorefinery Applications

open access: yesEnergies, 2017
Softwoods represent a significant fraction of the available lignocellulosic biomass for conversion into a variety of bio-based products. Its inherent recalcitrance, however, makes its successful utilization an ongoing challenge.
Christos Nitsos   +2 more
doaj   +1 more source

Construction and Application of a Novel C‐Vine Copula‐Based Multi‐Variate Ecological Drought Index

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT A comprehensive ecological drought index capturing vegetation growth conditions and meteorological–hydrological variability is essential for assessing ecological drought and optimizing water resource management. This study selected soil moisture (SM), actual evapotranspiration (ET), land surface temperature (LST) and leaf area index (LAI) to ...
Haofei Zhang, Xingye Han, Zhijun Wu
wiley   +1 more source

Dendrochronological analysis of the roof of the Nanebevzetí Panny Marie and Sv. Ondřeje church in Staré Hobzí

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2004
The work deals with dendrochronological analysis of the roof truss of parish church in the locality of Stare Hobzi. The dendrochronological analysis gave an integrated view on a complicated development of this building and it helped us to restore the ...
Michal Rybníček
doaj   +1 more source

New Hydrazone Derivatives Featuring Isatin and Piperazine Moieties: Synthesis, Cytotoxicity Evaluation, and Molecular Modeling Studies

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT In this study, ten novel compounds (IPH1–IPH10) were designed by integrating three pharmacophores (isatin, piperazine, and hydrazone) commonly found in the molecular structures of anticancer agents. The target molecules were obtained by the reaction of in‐house prepared 4‐(4‐(pyridin/pyrimidin‐2‐yl)piperazin‐1‐yl)benzohydrazide with various ...
Semiha Köprü   +3 more
wiley   +1 more source

Climate-growth relationships at different stem heights in silver fir and Norway spruce [PDF]

open access: yes, 2012
We investigated the effect of climate on variations in annual ring-area increment along the stem of dominant silver fir (Abies alba Mill.) and Norway spruce (Picea abies (L.) Karst.) trees in the Black Forest, southwestern Germany, to test the hypothesis
Bouriaud, O.   +4 more
core   +1 more source

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