Mohamed Said Mohamed

ORCID: 0000-0003-0617-6835
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Research Areas
  • Statistical Distribution Estimation and Applications
  • Statistical Mechanics and Entropy
  • Advanced Statistical Methods and Models
  • Financial Risk and Volatility Modeling
  • Complex Systems and Time Series Analysis
  • Fuzzy Systems and Optimization
  • Bayesian Methods and Mixture Models
  • Bone health and osteoporosis research
  • Facilities and Workplace Management
  • Statistical and Computational Modeling
  • Thermochemical Biomass Conversion Processes
  • Advanced Thermodynamics and Statistical Mechanics
  • COVID-19 Pandemic Impacts
  • Statistical Methods and Bayesian Inference
  • Bone health and treatments
  • Oral and Maxillofacial Pathology
  • Target Tracking and Data Fusion in Sensor Networks
  • COVID-19 epidemiological studies
  • Thermodynamic and Exergetic Analyses of Power and Cooling Systems
  • Bone Metabolism and Diseases
  • Infectious Diseases and Mycology
  • COVID-19 impact on air quality
  • Integrated Energy Systems Optimization

Ain Shams University
2014-2025

Prince Sattam Bin Abdulaziz University
2024

University of Business and Technology
2024

Northern Border University
2024

University of Somalia
1987

<p>This article presents the notion of continuous case weighted Tsallis extropy function as an information measure that follows framework distribution. We introduce this concept from two perspectives, depending on and entropy. Various examples to illustrate perspectives by examining a few its characteristics are presented. Some features stochastic orders those measures, including maximum value, introduced. An alternative depiction proposed models concerning hazard rate is provided....

10.3934/math.2025102 article EN cc-by AIMS Mathematics 2025-01-01

<p>Uncertainty measures are widely used in various statistical applications, including hypothesis testing and characterizations. Numerous generalizations of information with different extensions have been developed. Inspired by this, our study introduced the principle fractional generalized entropy measure investigated its properties through stochastic comparisons characterizations using order statistics upper random variables. We explored monotonicity symmetry entropy, emphasizing...

10.3934/math.2025053 article EN cc-by AIMS Mathematics 2025-01-01

The Tsallis entropy is an extension of the Shannon and used extensively in physics. cumulative residual entropy, which a generalization plays important role measurement uncertainty random variables has simple relationships with other information reliability measures. In this paper, some novel properties are disclosed. Moreover, measure applied to testing uniformity, where limit distribution approximation test statistic derived. addition, property stability discussed. Furthermore, percentage...

10.3390/math10050771 article EN cc-by Mathematics 2022-02-28

A pandemic caused by the novel coronavirus (COVID-19) is causing an unprecedented situation for world’s health services. Health, local communities, and government are adversely affected COVID-19 pandemic. Moreover, on January 21, 2020, WHO Emergency Committee declared a global emergency because of increasing numbers case notifications from countries overseas. While grave damage to socioeconomic phenomena multiple such as commodity prices, remittances, trade, tourism, significant job loss,...

10.1155/2021/4860704 article EN cc-by Complexity 2021-09-10

In the present paper, we use fractional and weighted cumulative residual entropy measures to test uniformity. The limit distribution an approximation of statistic based on are derived. Moreover, for this statistic, percentage points power against seven alternatives reported. Finally, a simulation study is carried out compare proposed tests other

10.1155/2021/5331260 article EN cc-by Journal of Mathematics 2021-07-21

The clinical picture, histopathology of the lesion, microscopic identification fungus and treatment entomophthoromycosis due to Basidiobolus in a seven-year-old boy are described. This is first case recognized Somalia confirms that this condition common widely distributed tropical countries.

10.1016/0035-9203(87)90209-4 article EN Transactions of the Royal Society of Tropical Medicine and Hygiene 1987-01-01

This paper presents several nonparametric estimators for the Sharma–Taneja–Mittal entropy measure of a continuous random variable with known support, utilizing spacing, local linear model, and kernel function. The properties these are discussed. Their performance was also examined through real data analysis Monte Carlo simulations. In experiments, proposed were employed to create test goodness-of-fit under standard uniform distribution. suggested statistics demonstrate strong performance, as...

10.3390/math12172639 article EN cc-by Mathematics 2024-08-25

The cumulative residual Tsallis entropy and its dynamic version were first proposed by Sati Gupta studied their various properties. Consequently, Rajesh Sunoj developed this model with some additional features. In paper, we deal those models for concomitants of m-generalized order statistics under Farlie-Gumbel-Morgenstern family. Some applications upper bounds are provided. addition, stochastically comparisons made.

10.1080/03610926.2020.1777306 article EN Communication in Statistics- Theory and Methods 2020-06-10

Based on the extensions of Morgenstern family (Huang and Bairamov extensions), concomitants different types generalized order statistics (gos) dual (dgos) are obtained. Moreover, a unified approach to such models is derived. Information properties as Shannon entropy Kullback-Leibler divergence for Huang Kotz extension

10.2298/fil1909771m article EN Filomat 2019-01-01

In communication theory, for possible outcomes of an experiment, we have two basic problems the statement experimenter: may not enough information (vague statement) or some be incorrect, which make inaccurate in either both these situations. this article, a measure inaccuracy and its residual between distributions concomitants generalized order statistics (1os) parent random variable are extended. Results family stochastic comparisons obtained. Furthermore, properties proposed discussed. The...

10.2298/fil1915931m article EN Filomat 2019-01-01

In this paper, based on the discrete lifetime distribution, residual and past of Tsallis Renyi extropy are introduced as new measures information. Moreover, some their properties relation to other discussed. Furthermore, an example a uniform distribution obtained models is given. softmax function can be used probability with unity sum. Thus, applying those for simulated real data demonstrated. Besides, data, fit convenient ARIMA model.

10.3390/e24121732 article EN cc-by Entropy 2022-11-27

<abstract><p>In this paper, the Tsallis and Renyi extropy is presented as a continuous measure of information under distribution. Furthermore, features their connection to other measures are introduced. Some stochastic comparisons results on order statistics upper records given. Moreover, some theorems about maximum discussed. On hand, numerical non-parametric estimation calculated for simulated real data with application time series model its forecasting.</p></abstract>

10.3934/math.20231233 article EN cc-by AIMS Mathematics 2023-01-01

Extropy, as a complementary dual of entropy, has been discussed in many works literature, where it is declared for other measures an extension extropy. In this article, we obtain the extropy generalized order statistics via its and give some examples from well‐known distributions. Furthermore, study residual past such models. On hand, based on Farlie–Gumbel–Morgenstern distribution, consider concomitants m ‐generalized present measure with additional features. addition, provide upper bound...

10.1155/2021/6491817 article EN cc-by Complexity 2021-01-01

Introduction Cigarette smoking is one of the major problems affecting health humans. Many studies have been conducted on different organs body, but only a few effect cigarette bone. Vitamin E potent antioxidant supplement that might alleviate these hazardous effects Aim The aim our study was to evaluate nicotine bone and whether addition vitamin could protect against nicotine-induced effects. Materials methods Forty-five animals were used divided into three groups comprising 15 each. Group I...

10.1097/01.ehx.0000451898.46827.f0 article EN The Egyptian Journal of Histology 2014-09-01

10.1007/s13226-020-0503-8 article EN Indian Journal of Pure and Applied Mathematics 2020-12-01

Motivated by the connotation of survival Rényi entropy and its related dynamic version, we introduce them in terms their lower bounds mean residual life function. Moreover, illustrate relation between some measures information. Furthermore, hazard rate order implies ordering entropy. Our models are considered a more comprehensive version generalized statistics give properties characterization results. Finally, non-parametric estimation is included based on real COVID-19 data simulated data.

10.1016/j.rinp.2021.104966 article EN cc-by-nc-nd Results in Physics 2021-11-23

<abstract><p>This article introduces the concept of residual and past Tsallis extropy as a continuous information measure within context distribution. Moreover, characteristics their relationships with other models are evaluated. Several stochastic comparisons provided, along outcomes concerning order statistics. Additionally, acquired include instances such uniform power function distributions. The incorporates its monotonic traits, defining presented. On hand, different...

10.3934/math.20231445 article EN cc-by AIMS Mathematics 2023-01-01

<abstract><p>The fractional generalized cumulative residual entropy, a broader version of the holds significance in assessing uncertainty model random variables and maintains straightforward connections with reliability models crucial information. This article represents modifies some novel features entropy discusses weak convergence. Additionally, measure is utilized to assess uniformity, involving derivation limit distribution an approximation test statistic's distribution....

10.3934/math.2024881 article EN cc-by AIMS Mathematics 2024-01-01

The purpose of this research is to find out the views Egyptian librariesspecialists about internal environment their libraries, and know thesymptoms disease they suffer from, make sure that symptomsthey from due building syndrome not forother reasons also aims extent effect structuralsyndrome on functioning libraries under study ofawareness among specialists in Egypt general, ofbuilding syndrome, most important results that23.79% total system public sufferedfrom symptoms associated with...

10.21608/ijlis.2017.70317 article EN المجلة الدولية لعلوم المكتبات و المعلومات 2017-07-01
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