Results 121 to 130 of about 70,459 (296)

Half a Century of Per‐ and Polyfluoroalkyl Substances in Northern Gannet Eggs: Impact of Regulations

Journal of Applied Toxicology, EarlyView.
ABSTRACT Per‐ and polyfluoroalkyl substances (PFAS), known as “forever chemicals”, are persistent organic pollutants that have been widely used in the industry across the globe for many decades. Their chemical stability, bioaccumulation, and toxicity pose major environmental and health risks. This study examines temporal trends in the concentrations of
Anaïs Fournier, Anaïs Kerric, Raphaël A. Lavoie   +2 more
wiley   +1 more source

A smoothing algorithm using cubic spline functions [PDF]

Two algorithms are presented for smoothing arbitrary sets of data. They are the explicit variable algorithm and the parametric variable algorithm.
Howser, L. M., Price, J. M., Smith, R. E., Jr.   +2 more
core   +1 more source

Deciphering nodal burden in thyroid carcinoma: A dedicated survey of age, lymph node ratio, log odds of positive nodes, and preoperative prediction models

Journal of Intelligent Medicine, EarlyView.
Abstract Evidence regarding the prognosis of thyroid carcinoma is heterogeneous, ranging from age effects and nodal burden metrics, such as lymph node ratio (LNR) and log odds of positive nodes (LODDS), to preoperative imaging models comprising ultrasound, CEUS, and radiomics.
Mennatallah Sherif, Mohanad A. Deif, Eman K. Elsayed   +2 more
wiley   +1 more source

Attention is a smoothed cubic spline

CoRR
We highlight a perhaps important but hitherto unobserved insight: The attention module in a transformer is a smoothed cubic spline. Viewed in this manner, this mysterious but critical component of a transformer becomes a natural development of an old notion deeply entrenched in classical approximation theory.
Zehua Lai, Lek-Heng Lim, Yucong Liu
openaire   +2 more sources

Heatwave Characteristics and Trends Across Eight Japanese Cities

International Journal of Climatology, EarlyView.
Heatwaves occur with high likelihood across Japan. Strong north–south contrasts exist in heatwave characteristics. Southern locations experience more frequent, longer, and more intense heatwaves. Since 1955 there has been an increase in heatwave frequency, duration, and cumulative heat, particularly for nocturnal heatwaves. ABSTRACT This study provides
Glenn McGregor, Asuka Suzuki‐Parker
wiley   +1 more source

An Improved CH₄ Profile Retrieving Method for Ground-Based Differential Absorption Lidar

Atmosphere
Range-resolved CH4 concentration measurement is important prior data for atmospheric physical and chemical models. Ground-based differential absorption lidar (DIAL) can measure the vertical distribution of CH4 concentration in the atmosphere.
Lu Fan, Yong Wan, Yongshou Dai
doaj   +1 more source

Prices over the Product Life Cycle: An Empirical Analysis [PDF]

This paper explores the extent to which goods follow systematic pricing patterns over their life cycle. The theoretical literature, and anecdotal evidence, suggests that new products are often introduced at high prices which decline as the good ages ...
Daniel Melser, Iqbal Syed
core  

Residual Neural Network Compensation of Temperature‐Induced Gamma Shift in OLED Display

Journal of the Society for Information Display, EarlyView.
The figure summarizes the proposed white‐only sensing framework and highlights its key advantages in improving color accuracy and reducing calibration time ABSTRACT Organic light‐emitting diode (OLED) displays exhibit temperature‐induced chromatic shifts and luminance‐dependent nonlinear responses, causing CIEDE2000 color difference (ΔE) and local ...
Ching‐Hsiang Hsu, Mang Ou‐Yang
wiley   +1 more source

Signal Extraction in Continuous Time and the Generalized Hodrick- Prescott Filter [PDF]

A widely used filter to extract a signal in a time series, in particular in the business cycle analysis, is the Hodrick-Prescott filter. The model that underlies the filter considers the data series as the sum of two unobserved component (signal and non ...
Edoardo Otranto, Roberto Iannaccone
core  

Aggregated functional data model for Near-Infrared Spectroscopy calibration and prediction [PDF]

, 2013
Calibration and prediction for NIR spectroscopy data are performed based on a functional interpretation of the Beer-Lambert formula. Considering that, for each chemical sample, the resulting spectrum is a continuous curve obtained as the summation of ...
Dias, Ronaldo, Garcia, Nancy L., Ludwig, Guilherme, Saraiva, Marley A.   +3 more
core