الأبحاث

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أحمد زكريا محمد عفيفى

أستاذ مساعد

كلية التجارة الاحصاءات والرياضيات والتأمينات

Extended odd Weibull Nadar-ajah–Haghighi distribution: Its properties, inference, and applications.

2026

Classical and Bayesian estimation of stress–strength reliability in the X-Lindley distribution under progressive censoring.

2026

Modeling A flexible extension of the log-logistic model with diverse failure rate shapes and applications.

2026

Efficient parameter estimation for the Poisson–Ailamujia distribution under ranked set and simple random sampling.

2026

A new flexible Weibull distribution for modeling real-life data: Improved estimators, properties, and applications.

2025

Modeling lifetime and count data using a unified flexible family: Its discrete counterpart, properties, and inference.

2025

A unified flexible Weibull-H family for modeling real-life data with properties, Bayesian and non-Bayesian inference.

2025

Statistical inference of the generalized process capability index for the discrete Lindley distribution.

2025

The modified log-logistic distribution: properties and inference with real-life data applications.

2025

Enhanced log ratio calibration methods for stratified variance estimation in survey sampling.

2025

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Data Analysis

Distribution Theory

Estimation

Reliability

Simulation