Results 141 to 150 of about 4,093 (257)

Temporal aggregation of univariate and multivariate time series models: A survey [PDF]

open access: yes
We present a unified and up-to-date overview of temporal aggregation techniques for univariate and multivariate time series models explaining in detail how these techniques are employed.
Andrea Silvestrini, David Veredas
core  

Inter-event times statistic in stationary processes: non linear arma modeling of wind speed time series

open access: yes, 2021
The random sequence of inter-event times of a level-crossing is a statistical tool that can be used to investigate time series from complex phenomena.
Cammarota Camillo
core  

Prevalence, Associated Factors, and Temporal Trends of Brucella Detection Across Human and Animal Hosts in Bangladesh: A 25‐Year Meta‐Analysis

open access: yesVeterinary Medicine and Science, Volume 12, Issue 4, July 2026.
This systematic review and meta‐analysis synthesizes Brucella prevalence across human and animal hosts in Bangladesh. Dogs showed the highest prevalence (7.49%), followed by goats (3.86%), cattle (3.67%), humans (2.94%), and horses (1.78%). Abortion history was significantly associated with Brucella infection, underscoring the need for integrated One ...
Radwan Raquib   +4 more
wiley   +1 more source

Estimativa do crescimento de povoamentos de Eucalyptus baseada na teoria dos modelos não lineares em multinível de efeito misto

open access: yesCiência Florestal, 2005
This study was based on the application of the nonlinear multilevel mixed-effects theory in modeling the height growth of Eucalyptus plantation. The database was from individual tree measurements, taken from different sites and over time.
Natalino Calegario   +3 more
doaj  

Aircraft Ionizing Radiation Exposure for Solar Cycle 24/25 From ARMAS and NAIRAS

open access: yesSpace Weather, Volume 24, Issue 7, July 2026.
Abstract Exposure to ionizing radiation from galactic cosmic rays and solar energetic particles at aviation flight altitudes can have an adverse effect on human health. Although airline crews are classified as radiation workers by the International Commission on Radiological Protection (ICRP), in most countries, their level of exposure is unquantified ...
Daniel B. Phoenix   +3 more
wiley   +1 more source

From Groups to Individuals: How Identifiability Reduces Biased Meta‐Perceptions and Polarization

open access: yesJournal of Applied Social Psychology, Volume 56, Issue 7, Page 519-527, July 2026.
ABSTRACT Political polarization reflects not only people's attitudes toward rival groups but also their meta‐perceptions—beliefs about how one's group is viewed by the opposing side. These second‐order beliefs are often negatively biased and exaggerated (Lees and Cikara 2020), reinforcing mistrust and perceived division.
Amy Bruck, Ilana Ritov
wiley   +1 more source

Automated Bandwidth Selection for Inference in Linear Models With Time‐Varying Coefficients

open access: yesJournal of Time Series Analysis, Volume 47, Issue 4, Page 854-875, July 2026.
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

Comprehensive evaluation of ARMA-GARCH(-M) approaches for modeling the mean and volatility of wind speed

open access: yes
Accurately modeling the mean and volatility of wind speed can be beneficial to effective wind energy utilization. For this purpose, this paper evaluates the effectiveness of autoregressive moving average-generalized autoregressive conditional ...
Shi, Jing, Erdem, Ergin, Liu, Heping
core  

Modeling highly volatile and seasonal markets: evidence from the Nord Pool electricity market [PDF]

open access: yes
In this paper we address the issue of modeling spot electricity prices. After analyzing factors leading to the unobservable in other financial or commodity markets price dynamics we propose a mean reverting jump diffusion model.
Ingve Simonsen   +2 more
core  

Analyzing and Forecasting Volatility Spillovers, Asymmetries and Hedging in Major Oil Markets [PDF]

open access: yes
Crude oil price volatility has been analyzed extensively for organized spot, forward and futures markets for well over a decade, and is crucial for forecasting volatility and Value-at-Risk (VaR).
Roengchai Tansuchat   +2 more
core  

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