Zobrazeno 1 - 10
of 3 469
pro vyhledávání: '"Khedher, A."'
In this article we consider the surplus process of an insurance company within the CramerLundberg framework. We study the optimal reinsurance strategy and dividend distribution of an insurance company under proportional reinsurance, in which capital
Externí odkaz:
http://arxiv.org/abs/2409.12523
In this paper we derive novel change of variable formulas for stochastic integrals w.r.t. a time-changed Brownian motion where we assume that the time-change is a general increasing stochastic process with finitely many jumps in a bounded set of the
Externí odkaz:
http://arxiv.org/abs/2407.02915
In this paper we develop Maximum likelihood (ML) based algorithms to calibrate the model parameters in credit rating transition models. Since the credit rating transition models are not Gaussian linear models, the celebrated Kalman filter is not suit
Externí odkaz:
http://arxiv.org/abs/2405.00576
This paper addresses the ``curse of dimensionality'' in the loss valuation of credit risk models. A dimension reduction methodology based on the Bayesian filter and smoother is proposed. This methodology is designed to achieve a fast and accurate los
Externí odkaz:
http://arxiv.org/abs/2401.00085
Autor:
Nidhal Ben Khedher, Zia Ullah, Mohamed Boujelbene, O. D. Makinde, Abdullah A. Faqihi, A. F. Aljohani, Abdoalrahman S. A. Omer, Ilyas Khan
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Variable viscosity, activation energy and microgravity effects on Darcy nanofluid for the thermal performance improvement in thermal energy storage systems through stretching flat plate solar collector is the focus of this research. Thermal
Externí odkaz:
https://doaj.org/article/377b55d1436a47d38ac90f537583f7d6
We introduce and analyse infinite dimensional Wishart processes taking values in the cone $S^+_1(H)$ of positive self-adjoint trace class operators on a separable real Hilbert space $H$. Our main result gives necessary and sufficient conditions for t
Externí odkaz:
http://arxiv.org/abs/2304.03490
Autor:
Hassib Ben Khedher, Erol Yıldırım
Publikováno v:
Bulletin of the Iraq Natural History Museum, Vol 18, Iss 1, Pp 225-235 (2024)
Externí odkaz:
https://doaj.org/article/ebb01eb27e8647b086609e1d8df0cbfa
Autor:
Hassib Ben Khedher
Publikováno v:
Journal of Insect Biodiversity and Systematics, Vol 10, Iss 2, Pp 243-271 (2024)
The first checklist of halictid bees (Hymenoptera: Halictidae) in Tunisia is established based on available data in the literature. This list contains 114 species belonging to four subfamilies (Halictinae Thomson; Nomiinae Robertson; Nomioidinae Bör
Externí odkaz:
https://doaj.org/article/a286711a77e24255a91515a09d9898f8
Autor:
Cyrus Raza Mirza, Zia Ullah, A. Dahshan, Md Mahbub Alam, Khadijah M. Abualnaja, Hanaa Abu-Zinadah, Abdullah A. Faqihi, Nidhal Ben Khedher
Publikováno v:
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105376- (2024)
Significance of this study is to explore Arrhenius activation energy, microgravity, chemical reaction and porous medium effects on Darcy nanofluid over a stretching sheet with nonlinear thermal radiations. Purpose of this study is to enhance the lubr
Externí odkaz:
https://doaj.org/article/152b58c4e57b4cc2b46a05d1c2fac99d
Autor:
Mhamed Benaissa, M.S. Kausar, M. Nasir, S. Saleem, M. Waqas, N. Zamri, Shirin Shomurotova, Nidhal Ben Khedher
Publikováno v:
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105237- (2024)
Magnetic nanoliquids stand inimitable when compared with conventional liquids as their distinctive magnetic attributes can be regulated utilizing magnetic fields. For this reason, heat transference can be stimulated or regulated subjected to external
Externí odkaz:
https://doaj.org/article/9ee7dcc055344932be94e304ac683e37