Zobrazeno 1 - 10
of 331
pro vyhledávání: '"Ahmed A Afify"'
Autor:
Tag S Anbar, Mona A Atwa, Rasha T Abdel-Aziz, Rehab A Hegazy, Sarah I Ibrahim, Rabab M El Genedy, Ahmed A Afify, Mohammed T Anbar, Carmen I Farid
Publikováno v:
Journal of the Egyptian Women’s Dermatologic Society, Vol 19, Iss 1, Pp 7-13 (2022)
Background Visual recognition of alteration in the skin color depends upon the contrast between altered areas and their surrounding background color. The maximum contrast in vitiligo exists in dark-complexioned patients between depigmented white patc
Externí odkaz:
https://doaj.org/article/4b2b974e57d9443fac2514c94769882b
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In survey statistics, estimating and reducing population variation is crucial. These variations can occur in any sampling design, including stratified random sampling, where stratum weights may increase the variance of estimators. Calibratio
Externí odkaz:
https://doaj.org/article/199fc98970fa4ddf8c70a761f50e0081
Autor:
Mohamed A.S. Ishag, Anthony Wanjoya, Aggrey Adem, Rehab Alsultan, Abdulaziz S. Alghamdi, Ahmed Z. Afify
Publikováno v:
Alexandria Engineering Journal, Vol 104, Iss , Pp 587-602 (2024)
The proportional hazard regression models are widely used statistical tools for analyzing survival data and estimating the effects of covariates on survival times. It is assumed that the effects of the covariates are constant across the time. In this
Externí odkaz:
https://doaj.org/article/39f40f38d01248d69d8a1997eb6ab871
Autor:
Veronica Kariuki, Anthony Wanjoya, Oscar Ngesa, Amirah Saeed Alharthi, Hassan M. Aljohani, Ahmed Z. Afify
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-34 (2024)
Abstract This paper presents the exponentiated alpha-power log-logistic (EAPLL) distribution, which extends the log-logistic distribution. The EAPLL distribution emphasizes its suitability for survival data modeling by providing analytical simplicity
Externí odkaz:
https://doaj.org/article/d3a772fca9c14b7aa5d073c68d057099
Autor:
Veronica Kariuki, Anthony Wanjoya, Oscar Ngesa, Mahmoud M. Mansour, Enayat M. Abd Elrazik, Ahmed Z. Afify
Publikováno v:
AIMS Mathematics, Vol 9, Iss 6, Pp 15610-15638 (2024)
In this paper, we propose a parametric accelerated failure time (AFT) hazard-based regression model with the extended alpha-power exponential (EAPE) baseline distribution. The proposed model is called the extended alpha-power exponential-AFT (EAPE-AF
Externí odkaz:
https://doaj.org/article/227b0989ab20417286e3d06c9f578ed9
Publikováno v:
AIMS Mathematics, Vol 9, Iss 5, Pp 11910-11940 (2024)
We introduced a flexible class of continuous distributions called the generalized Kavya-Manoharan-G (GKM-G) family. The GKM-G family extended the Kavya-Manoharan class and provided greater flexibility to the baseline models. The special sub-models of
Externí odkaz:
https://doaj.org/article/160c679f52794fb982de61cf9896cb69
Autor:
Mohammad Q. Al-Natour, Mohammed A. Rohaim, Rania F. El Naggar, Mohammed A. Abdelsabour, Ahmed F. Afify, Yahia M. Madbouly, Muhammad Munir
Publikováno v:
Poultry Science, Vol 103, Iss 4, Pp 103565- (2024)
ABSTRACT: The global distribution of avian respiratory viruses highlights the need for effective surveillance programs and international collaboration to monitor viral circulation and implement timely control measures. In the current study, we aim to
Externí odkaz:
https://doaj.org/article/52cf84b493d34931815ee5dc1b4b251e
Autor:
Heba A. El-Gawad, Gamal K. Hassan, Karim M. Aboelghait, Walaa H. Mahmoud, R. M. Mohamed, Ahmed A. Afify
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract Chromium is a hazardous compound from industrial processes, known for its toxicity, mutagenicity, teratogenicity, and carcinogenicity. Chemical methods are efficient but cost-effective alternatives with reduced sludge are sought. Electro-coa
Externí odkaz:
https://doaj.org/article/3e21579fb294494caed50e3f3f9fcf78
Autor:
Momtaz A. Shahein, Heba A. Hussein, M. H. Ali, Shimaa M. Ghoniem, Omayma A. Shemies, Ahmed F. Afify, Amthal Ahmed Fuoad, Ayah M. Hassan, Mostafa R. Zaher, Nahla Hussien AbouEl Ela, Ahmed R. Habashi, Samah Eid, Naglaa M. Hagag
Publikováno v:
Veterinary World, Vol 16, Iss 7, Pp 1429-1437 (2023)
Background and Aim: Foot-and-mouth disease (FMD) virus causes continuous outbreaks, leading to serious economic consequences that affect animal productivity and restrict trade movement. The potential influence of the disease was due to the emergence
Externí odkaz:
https://doaj.org/article/e18a00ba94f9453cb77a3021a8060246
Publikováno v:
Heliyon, Vol 10, Iss 6, Pp e27661- (2024)
The exponential distribution is one of the most widely used statistical distribution for reliability issues. In this paper, we introduce a novel family based on the exponential model, called the new exponential-H (NEx-H) family. The sub-models of the
Externí odkaz:
https://doaj.org/article/0cccb15bd1dc4ddfbfd0d143c1feaa9a