Results 111 to 120 of about 93,014 (230)
Automated Bandwidth Selection for Inference in Linear Models With Time‐Varying Coefficients
Journal of Time Series Analysis, EarlyView.ABSTRACT The problem of selecting the smoothing parameter, or bandwidth, for kernel‐based estimators of time‐varying coefficients in linear models with possibly endogenous explanatory variables is considered. We examine automated bandwidth selection by means of cross‐validation, a nonparametric variant of Akaike's information criterion, and bootstrap ...
Charisios Grivas, Zacharias Psaradakis
wiley +1 more source
The Accuracy Smoothness Dilemma in Prediction: A Novel Multivariate M‐SSA Forecast Approach
Journal of Time Series Analysis, EarlyView.ABSTRACT Forecasting presents a complex estimation challenge, as it involves balancing multiple, often conflicting, priorities and objectives. Conventional forecast optimization methods typically emphasize a single metric, such as minimizing the mean squared error (MSE), which may neglect other crucial aspects of predictive performance. To address this
Marc Wildi
wiley +1 more source
Image of mathematics: A case study of two women's early mathematics experiences
School Science and Mathematics, EarlyView.Abstract People often view mathematics as abstract, cold, and irrelevant to real life, and their school experiences likely influence such views. In this case study, we investigated the mathematics experiences of two women who participated in an afterschool girls‐only STEM club 30 years ago when they were in fifth and sixth grades.
Lili Zhou +4 more
wiley +1 more source
School Science and Mathematics, EarlyView.ABSTRACT This study investigates the impact of problem‐posing on the mathematical proficiency and engagement of 56 Developmental Mathematics (DM) students enrolled in a noncredit college mathematics course. Using a quasi‐experimental design, one of two existing classes was selected as the experimental group and received a 5‐week intervention focused on
John Sevier +2 more
wiley +1 more source
Cubature Formulas for Oscillatory Integrals with Given Function Traces on Lines
Кібернетика та комп'ютерні технологіїIntroduction. Numerical integration of rapidly oscillating multivariable functions plays an important role in applied mathematics, particularly in image processing, computed tomography, and mathematical modeling.
Yevheniia Khurdei, Vladyslav Ivanov
doaj +1 more source
Function Art: Linking Mathematics, Technology, and Visual Arts
School Science and Mathematics, EarlyView.ABSTRACT This study investigated students' understanding of mathematical functions and strategies to create artwork using GeoGebra. It was framed by the principles of constructionism and examined how students use functions in creating artworks. We gathered data from students' artworks using the Algebra view and the Construction Protocol in the GeoGebra
Guillermo Bautista Jr +5 more
wiley +1 more source
Padé approximants for inverse trigonometric functions and their applications. [PDF]
J Inequal Appl, 2017 Wu S, Bercu G.
europepmc +1 more source
Functional equations of trigonometric functions [PDF]
Časopis pro pěstování matematiky, 1955 openaire +2 more sources
A Question of Identity: Young Māori Connections to Marae—Do They Matter?
Kōtuitui: New Zealand Journal of Social Sciences Online, Volume 21, Issue 2, June 2026.Cultural connection, identity and belonging are increasingly shaped by urbanisation, mobility and the conditions of digitally integrated and often mediated life. Maintaining place‐based Indigenous relationships and responsibilities is important especially given the social, cultural or geographic distance between Indigenous people and their ancestral ...
Merata Kawharu +3 more
wiley +1 more source
A two-point-Padé-approximant-based method for bounding some trigonometric functions. [PDF]
J Inequal Appl, 2018 Chen XD, Ma J, Jin J, Wang Y.
europepmc +1 more source