Ahmed Hamdi Mansi

ORCID: 0000-0003-3045-4217
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About
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Research Areas
  • Geophysics and Gravity Measurements
  • Statistical Distribution Estimation and Applications
  • Geomagnetism and Paleomagnetism Studies
  • Geophysical and Geoelectrical Methods
  • Probabilistic and Robust Engineering Design
  • GNSS positioning and interference
  • Geological and Geophysical Studies
  • Hydrology and Drought Analysis
  • Financial Risk and Volatility Modeling
  • Seismic Imaging and Inversion Techniques
  • Reliability and Maintenance Optimization
  • Inertial Sensor and Navigation
  • earthquake and tectonic studies
  • Geophysical Methods and Applications
  • Statistical and numerical algorithms
  • Statistical Mechanics and Entropy
  • Ionosphere and magnetosphere dynamics
  • Underwater Acoustics Research
  • Oceanographic and Atmospheric Processes
  • Geological Modeling and Analysis
  • Methane Hydrates and Related Phenomena
  • Innovative concrete reinforcement materials
  • Statistical Methods and Bayesian Inference
  • Astronomy and Astrophysical Research
  • Cyclone Separators and Fluid Dynamics

Politecnico di Milano
2015-2024

Istituto Nazionale di Geofisica e Vulcanologia
2018-2023

Shaqra University
2019

The major goal of this work is to give a thorough examination the effect double diffusion convection (DDC) in addition generated magnetic field on peristaltic movement fourth-grade nanofluid across vertical sophisticated asymmetrical microchannel using nondeformable porous media as basis for intricate pumping systems inspired by biological processes hazardous waste. mathematical formulas pertaining flow, heat/mass transfer under influence viscous dissipation, nonlinear heat radiation, and...

10.1080/10407782.2024.2323168 article EN Numerical Heat Transfer Part A Applications 2024-03-11

In this research, we establish the novel sin-G class, an innovative and comprehensive class of trigonometric distributions centered on sine function. A analytical approach comprises calculations for probability density function reliability indicators. Various estimation methods were presented to estimate specified model parameters. Applying randomly created datasets provided estimating techniques, behavior these variables was investigated. Then, focus is directed toward a specific member...

10.1063/5.0180263 article EN cc-by AIP Advances 2024-03-01

The determination of high-resolution geoid for marine regions requires the integration gravity data provided by different sources, e.g. global geopotential models, satellite altimetry, and shipborne gravimetric observations. Shipborne data, acquired over a long time, comprises short-wavelengths gravitation signal. This paper aims to produce consistent field Red Sea region be used modelling. Both, leave-one-out cross-validation Kriging prediction techniques were chosen ensure that observed...

10.1080/01490419.2017.1414088 article EN Marine Geodesy 2018-02-21

Abstract We modeled crustal and lithospheric thickness variation as well the variations in temperature, composition, S wave seismic velocity, density of lithosphere beneath Saharan Metacraton (SMC) applying an interdisciplinary 3‐D modeling. Regardless limited data set, we aimed at consistent imaging SMC structure by combining independent sets to better understand evolution metacraton. considered that was once intact Archean‐Paleoproterozoic craton but metacratonized during Neoproterozoic...

10.1029/2019jb018747 article EN cc-by Journal of Geophysical Research Solid Earth 2020-06-23

<abstract><p>This work utilizes generalized order statistics (GOSs) to study the $ q $-Weibull distribution from several statistical perspectives. First, we explain how obtain maximum likelihood estimates (MLEs) and utilize Bayesian techniques estimate parameters of model. The Fisher information matrix (FIM) required for asymptotic confidence intervals (CIs) is generated by obtaining explicit expressions. A Monte Carlo simulation conducted compare performances these based on type...

10.3934/math.2024404 article EN cc-by AIMS Mathematics 2024-01-01

A flexible distribution for the analysis of bounded data is proposed. The new model generalized through transmuted approach, and resultant named “transmuted modified Lehmann-type II distribution.” comprehensive key characteristics performed, including shape model, survival, hazard function, analytical expressions mode, quantile ordinary moments, stress–strength reliability. Some famous entropy measures are also derived. parameters have been estimated using four distinct methods, maximum...

10.1063/5.0189404 article EN cc-by AIP Advances 2024-03-01

Using the power transformation method, we introduce a generalized version of unit Gumbel type-2 distribution. The new lifetime distribution is called (PUGT2D). distribution’s statistical and reliability properties are given, some estimation methods proposed for estimating model parameters. usefulness flexibility illustrated with real datasets. Results based on log-likelihood, information statistics, goodness-of-fit test results showed that PUGT2D better fits data than other competing...

10.1063/5.0177877 article EN cc-by AIP Advances 2023-11-01

In this work, a record of 16 channels, with future channel spacing in the telecommunication standardization sector International Telecommunications Union G.694.1 (ITU-T G.694.1) for Dense Wavelength Division Multiplexing (DWDM) (i.e., 12.5 GHz), is simulated and tested. This work done to realize proposed high capacity DWDM-Passive Optical Network (DWDM-PON) system. These specifications are associated enhancing upstream (US) 2.5 Gb/s over 25 km Single-Mode Fiber (SMF) transmission producing...

10.3390/app9214520 article EN cc-by Applied Sciences 2019-10-24

The study of the discontinuity between Earth crust and upper mantle, so-called Moho, lithospheric architecture in general, has several important applications exploration geophysics. For instance, it is used to facilitate inversion seismic-related data, order obtain information on sedimentary layers or Earth’s heat flux. In this paper, Levant crustal structure being investigated starting from gravity disturbances coming a global geopotential field model based ESA GOCE satellite mission...

10.3390/geosciences8060200 article EN cc-by Geosciences 2018-06-02

The paper introduces the hybrid odd exponential-Φ (HOE-Φ) family, a novel framework for generating continuous distribution characterized by an additional parameter. extensive statistical properties of this family are derived and explored in detail. Parameter estimation is performed using maximum likelihood technique. efficacy versatility proposed model demonstrated through comparative analysis involving two distinct real-world datasets.

10.1063/5.0187731 article EN cc-by AIP Advances 2024-04-01

In statistical modeling, lifetime datasets play an important and significant role. Weighted distributions can be useful to attain the essential purposes relating developed distributions’ flexibility improve further compliances in data forming; they provide extension of distributions. The current study suggests a new best-fit probability distribution model based on Pareto distribution. is called Survival (SWP) model. Furthermore, expressions for different properties, which include moments,...

10.1063/5.0203196 article EN cc-by AIP Advances 2024-04-01

In this article, the odd Lomax Gompertz distribution has been introduced, which is derived by modifying to serve as a baseline model in generalized distribution. The newly proposed offers enhanced flexibility and provides promising alternative for modeling lifetime data. This study seeks establish solid theoretical foundation its application through exploration of several properties, such non-central moments, stochastic orderings quantile function, entropy measure, new model. Additionally,...

10.1063/5.0179914 article EN cc-by AIP Advances 2023-11-01

Airborne gravimetry represents nowadays probably the most efficient technique to collect gravity observations close Earth’s surface. In 1990s, thanks development of Global Navigation Satellite Systems (GNSS), which has made accurate navigational data available, this started spread worldwide because its capability provide measurements in a fast and cost-effective way. Differently from other techniques such as shipborne gravimetry, it advantage also challenging environments can be difficult...

10.3390/geosciences8080292 article EN cc-by Geosciences 2018-08-06
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