Results 1 to 10 of about 544,329 (286)

Modeling auto insurance frequency using K-means and mixture regression [PDF]

open access: yesMathematics and Modeling in Finance, 2023
Given the importance of policyholder classification in helping to make a good decision in predicting optimal premiums for actuaries.This paper proposes, first, an optimal construction of policyholder classes.
Maryem Jaziri, Afif Masmoudi
doaj   +1 more source

Revue of contingent capital pricing model using growth and barrier option approach with numerical application [PDF]

open access: yesMathematics and Modeling in Finance, 2023
This paper investigates the effects of contingent capital, a debt instrument that automatically converts into equity if the value of the asset is below a predetermined threshold on the pricing process of a bank assets’. A traceable form of the contingent
Fathi Abid, Ons Triki, Asma Khadimallah
doaj   +1 more source

Binary expansions of prime reciprocals [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics, 2023
Prime numbers have been always of great interest. In this work, we explore the prime numbers from a sieve other than the Eratosthenes sieve. Given a prime number p, we consider the binary expansion of 1/p and, in particular, the size of the period of 1/p.
Brenda Navarro-Flores   +2 more
doaj   +1 more source

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

Home - About - Disclaimer - Privacy