Results 11 to 20 of about 617,206 (220)

Identification of a Stochastic Dynamic Model for Aircraft Flight Attitude Based on Measured Data

open access: yesInternational Journal of Aerospace Engineering, 2023
Stochastic disturbances are everywhere. The influence of stochastic factors on the modeling and simulation of aircraft flight dynamics should be considered.
Haiquan Li   +5 more
doaj   +1 more source

Do Ṣukūk and Islamic indexes act as safe refuge to conventional stock markets? Evidence from Markov-switching CAPM approach [PDF]

open access: yesIslamic Economic Studies, 2022
Purpose – The objective of this paper is twofold. First, to study the safe-haven characteristic of the Islamic stock indexes and Ṣukūk during the crises time. Second, to evaluate this property in the last pandemic.
Slah Bahloul, Fatma Mathlouthi
doaj   +1 more source

Robust estimation of SARS-CoV-2 epidemic in US counties

open access: yesScientific Reports, 2021
The COVID-19 outbreak is asynchronous in US counties. Mitigating the COVID-19 transmission requires not only the state and federal level order of protective measures such as social distancing and testing, but also public awareness of time-dependent risk ...
Hanmo Li, Mengyang Gu
doaj   +1 more source

Co-movement and causal relationships between conventional and Islamic stock market returns under regime-switching framework [PDF]

open access: yesJournal of Capital Markets Studies, 2022
Purpose – This paper aims at examining the co-movement dependent regime and causality relationships between conventional and Islamic returns for emerging, frontier and developed markets from November 2008 to August 2020.
Fatma Mathlouthi, Slah Bahloul
doaj   +1 more source

Circular functional analysis of OCT data for precise identification of structural phenotypes in the eye

open access: yesScientific Reports, 2021
Progressive optic neuropathies such as glaucoma are major causes of blindness globally. Multiple sources of subjectivity and analytical challenges are often encountered by clinicians in the process of early diagnosis and clinical management of these ...
Md. Hasnat Ali   +9 more
doaj   +1 more source

Leveraging Twitter data to understand public sentiment for the COVID‐19 outbreak in Singapore

open access: yesInternational Journal of Information Management Data Insights, 2021
Microblogging has become one of the most useful tools for sharing everyday life events and news and for expressing opinions about those events. As Twitter posts are short and constantly being generated, they are a great source for providing public ...
Khairiyah Mohamed Ridhwan   +1 more
doaj   +1 more source

Dynamical analysis of an SDOF quasi‐linear system with jump noises and multitime‐delayed feedback forces

open access: yesInternational Journal of Mechanical System Dynamics, 2022
In this paper, stochastic dynamics of a single degree‐of‐freedom quasi‐linear system with multitime delays and Poisson white noises are investigated using an approximate procedure based on the stochastic averaging method.
Wantao Jia   +3 more
doaj   +1 more source

Supervised Nonparametric Classification in the Context of Replicated Point Patterns

open access: yesImage Analysis and Stereology, 2022
A spatial point pattern is a collection of points in space, representing, e.g. observed locations of trees, bird nests, centers of cells in a histological sample, etc.
Kateřina Pawlasová, Jiří Dvořák
doaj   +1 more source

Generalised block bootstrap and its use in meteorology [PDF]

open access: yesAdvances in Statistical Climatology, Meteorology and Oceanography, 2017
In an earlier paper, Rakonczai et al.(2014) emphasised the importance of investigating the effective sample size in case of autocorrelated data. The simulations were based on the block bootstrap methodology.
L. Varga, A. Zempléni
doaj   +1 more source

On Statistics, Probability, and Entropy of Interval-Valued Datasets

open access: yesInternational Conference on Information Processing and Management of Uncertainty, 2020
Applying interval-valued data and methods, researchers have made solid accomplishments in information processing and uncertainty management. Although interval-valued statistics and probability are available for interval-valued data, current inferential ...
Chenyi Hu, Zhihui H. Hu
semanticscholar   +1 more source

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