Results 71 to 80 of about 747,562 (306)
On Asymptotic Theory for ARCH (∞) Models
Journal of Time Series Analysis, 2017 Autoregressive conditional heteroskedasticity (ARCH)() models nest a wide range of ARCH and generalized ARCH models including models with long memory in volatility. Existing work assumes the existence of second moments. However, the fractionally integrated generalized ARCH model, one version of a long memory in volatility model, does not have finite ...
Christian M. Hafner, Arie Preminger
openaire +3 more sources
Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3
Advanced Engineering Materials, EarlyView.This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling +2 more
wiley +1 more source
IngenieríaContext: Accurate dental arch shape prediction is crucial for orthodontic treatment and personalized dental appliance creation. This study introduces a computer vision-based tool for predicting arch shapes in 3D dental models.
Juan David Tamayo Quintero +2 more
doaj +1 more source
Research Progress on Deformation Behavior Analysis and Safety Monitoring of High Arch Dams [PDF]
长江科学院院报Deformation is the comprehensive reflection of the structural behavior of high arch dam bodies and their foundations. To ensure the safe service of such projects, it is of utmost importance to study and propose scientific theories for deformation ...
YANG Guang, WANG Lin, LI Bo, SUN Jin, ZHANG Jian-wei, HAN Zhang, LI Hui
doaj +1 more source
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
A Simple Approach to the Estimation of Continuous Time CEV Stochastic Volatility Models of the Short-Term Rate [PDF]
Aim of this article is to judge the empirical performance of 'ARCH models as diffusion approximations' of models of the short-term rate with stochastic volatility.
Antonio Mele, Fabio Fornari
core
Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures
Advanced Engineering Materials, EarlyView.This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley +1 more source
Trueness comparison of intraoral scans for diverse arch lengths in pediatric dental models
Journal of Dental SciencesBackground/purpose: Spacing between teeth is a common trait across different stages of dentition. With the tide of the digital impression, the scanning trueness of the intraoral scanner (IOS) is a hot subject.
Chin-Yun Pan +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park +8 more
wiley +1 more source
Erbil Dental Journal, 2023 Background and Objectives: This study aims to compare and evaluate the accuracy of the conventional and digital intraoral scanner impression approaches of the maxillary edentulous arch with indirect fixed restorations.
Lana Shwan Jalal, Dara Hamarashid Saeed
doaj