Ahmed Farouk - Academia.edu (original) (raw)

Papers by Ahmed Farouk

Studies in Big Data, 2017

We derive a new type of no-hidden-variables theorem based on the assumptions proposed by Kochen a... more We derive a new type of no-hidden-variables theorem based on the assumptions proposed by Kochen and Specker. We consider N spin-1/2 systems. The hidden results of measurement are either 1  or 1  (in /2  unit). We derive some proposition concerning a quantum expected value under an assumption about the existence of the Bloch sphere in N spin-1/2 systems. However, the hidden variables theory violates the proposition with a magnitude that grows exponentially with the number of particles. Therefore, we have to give up either the existence of the Bloch sphere or the hidden variables theory. Also we discuss two-dimensional no-hidden-variables theorem of the KS type. Especially, we systematically describe our assertion based on more mathematical analysis using raw data in a thoughtful experiment.

Nowadays, customers are using more self-service options in Egyptian banking sector such as Automa... more Nowadays, customers are using more self-service options in Egyptian banking sector such as Automated Teller Machines (ATMs), Telephone Banking, and Internet Banking, which are more convenient to use. Taking into consideration the huge investments made by banks in Internet infrastructure, customer satisfaction and retention are turning into the crucial factors for success in order to generate positive customer value. In order for banks to retain their e-customers, they should have better understanding of how customers perceive and evaluate the quality of the electronically offered services. This paper proposes a structured model for evaluating the performance of the three electronic banking services; ATMs, Telephone Banking, and Internet Banking using the Preference Ranking Organization Method For Enrichment Evaluation (PROMETHEE) in conjunction with Analytical Hierarchy Process (AHP) based on the E-service quality dimensions. AHP is used to determine the relative importance of servi...

IEEE Internet of Things Journal, 2021

Network coding is an elegant and novel technique to improve network throughput and performance. I... more Network coding is an elegant and novel technique to improve network throughput and performance. It is considered as a critical technology to facilitate ever-increasing demands of future wireless networks. It exploits the broadcast nature of wireless media and cooperatively codes packets from different senders to provide reliable, secure, and efficient transmissions. Current research focuses on either transmission delay, coding complexity, forwarding security, or end-to-end throughput. Network coding-aided solutions can recover lost packets without feedback, eliminate latency, reduce the routing cost on diverse paths, or optimize the capacity of unstable wireless networks. However, devices or smart sensors usually have limited computational capacity and some applications could not tolerate high decoding delay, which prevents network coding from being widely deployed in the real world. In recent years, many research methods consider simplifying decoding matrix or coding algorithm to alleviate the shortcoming of network coding and further satisfy the extreme demands of the future wireless network. This article summarizes complexity-optimized methods and explains the interaction effect of coding opportunities and decoding overhead. We propose a taxonomy of practical network coding methods and illustrate three practical directions on cutting computational complexity and enhancing progressive decoding. We also conclude the benefit and cost of current network coding algorithms along with the outline of future research.

American Journal of Biochemistry and Biotechnology, 2021

Hypovitaminosis D has a negative impact on the cardiovascular system. We performed the current st... more Hypovitaminosis D has a negative impact on the cardiovascular system. We performed the current study to investigate the expression of Vitamin D Receptor (VDR) in atherosclerotic human male aortas and to examine the effect of different doses of Vit. D supplementation on VDR expression in the aortas of male rats fed a High-Fat Diet (HFD). Human participants included 50 atherosclerotic male patients with anterior myocardial infarction and 131 control healthy males. Fifty male Wistar rats were divided into 2 groups: Control (Cont.) group; n = 10 and HFD fed rats; n = 40. The latter was divided equally into 4 subgroups according to the dose of Vit. D supplemented. Vitamin D was supplemented in 3 doses: (0.025, 0.05, 0.075 µg/kg) for a duration of 17 weeks. VDR expression score was immunohistochemically evaluated in aortas of both human and animal study groups. The current study revealed that Vit. D levels were significantly lower in atherosclerotic patients with myocardial infarctions compared to the human control group. Concurrent administration of Vit. D suppresses the progress of atheromatous plaque in rats feed a HFD in a dose-dependent manner. Consequently, it could be concluded that Vit. D supplements are recommended as a prophylaxis in patients at high risk of coronary artery disease.

2021 International Mobile, Intelligent, and Ubiquitous Computing Conference (MIUCC), 2021

Ambient mechanical vibrations produced by different sources, namely machinery and road traffic, a... more Ambient mechanical vibrations produced by different sources, namely machinery and road traffic, are considered as a wide spread annoying source of noise. However, from another perspective these abundant vibrations can be seen as a potential source of energy. In this research, we will design an acoustoelastic metamaterial (AEMM) that acts as a noise barrier through taking advantage of local resonance mechanism in the AEMM unit cells, to filter ambient mechanical vibrations whose frequencies are below 500 Hz. This AEMM is also capable of harvesting these filtered frequencies through a piezoelectric transduction mechanism that will convert them into electrical power. In this paper, we will analytically and numerically validate this AEMM using finite element analysis tool (COMSOL Multiphysics).

Applied Sciences, 2020

In this paper, we analyze the dynamics of non-local correlations (NLCs) in an anisotropic two-qub... more In this paper, we analyze the dynamics of non-local correlations (NLCs) in an anisotropic two-qubit Heisenberg XYZ model under the effect of the phase damping. An analytical solution is obtained by applying a method based on the eigenstates and the eigenvalues of the Hamiltonian. It is observed that the generated NLCs are controlled by the Dzyaloshinskii–Moriya interaction, the purity indicator, the interaction with the environment, and the anisotropy. Furthermore, it is found that the quantum correlations, as well as the sudden death and sudden birth phenomena, depend on the considered physical parameters. In particular, the system presents a special correlation: the skew-information correlation. The log-negativity and the uncertainty-induced non-locality exhibit the sudden-change behavior. The purity of the initial states plays a crucial role on the generated nonlocal correlations. These correlations are sensitive to the DM interaction, anisotropy, and phase damping.

APIK Journal of Internal Medicine, 2020

Cahiers de la Méditerranée, 2013

Référence électronique Ahmed Farouk, « Quelques cas d'évasions de captifs chrétiens au Maroc, fin... more Référence électronique Ahmed Farouk, « Quelques cas d'évasions de captifs chrétiens au Maroc, fin XVII e-début XVIII e siècle, selon le père Dominique Busnot »,

International Journal of Theoretical Physics, 2017

An interpretation of quantum mechanics is discussed. It is assumed that quantum is energy. An alg... more An interpretation of quantum mechanics is discussed. It is assumed that quantum is energy. An algorithm by means of the energy interpretation is discussed. An algorithm, based on the energy interpretation, for fast determining a homogeneous linear function f (x) := s.x = s 1 x 1 + s 2 x 2 + • • • + s N x N is proposed. Here x = (x 1 ,. .. , x N), x j ∈ R and the coefficients s = (s 1 ,. .. , s N), s j ∈ N. Given the interpolation values (f (1), f (2), ..., f (N)) = y, the unknown coefficients s = (s 1 (y),. .. , s N (y)) of the linear function shall be determined, simultaneously. The speed of determining the values is shown to outperform the classical case by a factor of N. Our method is based on the generalized Bernstein-Vazirani algorithm to qudit systems. Next, by using M parallel quantum systems, M homogeneous linear functions are determined, simultaneously. The speed of obtaining the set of M homogeneous linear functions is shown to outperform the classical case by a factor of N × M.

Arab Journal of Urology, 2019

Objective: To evaluate the value of adding fibrin glue, as a sealant material, to the anastomotic... more Objective: To evaluate the value of adding fibrin glue, as a sealant material, to the anastomotic line during stentless laparoscopic pyeloplasty (LPP). Patients and methods: In all, 92 patients with pelvi-ureteric junction obstruction (PUJO), scheduled for LPP, were randomised into two groups (46 in each group). Group A, underwent transperitoneal stentless LLP sealed with fibrin glue, whilst Group B underwent the same procedure without fibrin glue. Results: Both groups were similar for patient demographics and presentation. Despite that, we found a significant statistical difference between the groups for operative time and blood loss. The total number of patients that had a urinary leak was 10 and 24 patients, in groups A and B respectively (P = 0.002). A prolonged leak lasting for >5 days, which stopped spontaneously occurred in three patients (7.14%) in Group A and six (14.3%) in Group B (P = 0.265). A persistent 14-day leak that needed intervention developed in two patients (4.3%) in Group A and five (10.9%) in Group B (P = 0.434). One patient in Group B developed urinoma 1 week after discharge, and another patient in the same group developed deep venous thrombosis. There was no significant difference between the groups for postoperative complications in the early 3-month period. The success rate was 39 (92.86%) and 36 patients (85.7%), in groups A and B respectively (P = 0.265). Conclusion: Adding fibrin glue to seal the anastomosis decreased urinary leakage but did not have a significant impact on outcomes.

International Journal of Theoretical Physics, 2018

In the short contribution, we consider inequalities of confirming genuine multipartite entangleme... more In the short contribution, we consider inequalities of confirming genuine multipartite entanglement. We have a better entanglement witness for a particular mixed state to test genuine multipartite entanglement. Our physical situation is that we measure Pauli observables σ x , σ y , and σ z per side. If the reduction factor is greater than 0.4, then we can confirm the measured quantum state is genuine multipartite entangled experimentally.

European Urology Supplements, 2019

Scientific reports, Jan 11, 2018

We analyze the dynamics of squeezing in a ballistic quantum wire with Rashba spin-orbit interacti... more We analyze the dynamics of squeezing in a ballistic quantum wire with Rashba spin-orbit interaction in the presence of both strong and weak magnetic fields and for different initial states of the system. Compared to the more standard measure of squeezing based on variances, we show that entropy squeezing is a more sensitive measure. Our results show that there is a strong relationship between the spin-orbit interaction and the strength of entropy squeezing. Furthermore, there is a relationship between the initial state and the number of squeezed components. This allows new knobs to control the strength and the component of entropy squeezing in a nanowire system.

World journal of urology, Jan 15, 2018

The extracorporeal shockwave lithotripsy (ESWL) remains the most common first line of treatment f... more The extracorporeal shockwave lithotripsy (ESWL) remains the most common first line of treatment for renal stones in the pediatric population. The purpose of this study is to evaluate and compare the outcomes of the ESWL and mini-percutaneous nephrolithotomy (mini-PCNL). A total of 108 patients younger than 12 years of age with 1-2 cm single renal stone (pelvic or calyceal) were randomized into two groups, each containing 54 patients. Patients in group A were subjected to mini-PCNL using 16.5 Fr percutaneous sheath while those in group B underwent ESWL using Dornier Compact Sigma. The stone-free rate (SFR) after first session was 88.9% (48 cases) and 55.6% (30 cases) for groups A and B, respectively. The difference is highly statistically significant P = 0.006. Two patients (3.7%) in group A needed 2nd session of PCNL, while 18 patients (33.3%)in group B needed a 2nd session, of theses 18 patients six patients needed a 3rd session of ESWL. After the third session of ESWL and second l...

American Journal of Aerospace Engineering, 2015

The purpose of this work is to study the aerodynamic performance of a tandem C4 base-profile comp... more The purpose of this work is to study the aerodynamic performance of a tandem C4 base-profile compressor blade using numerical tools. In this paper, the flow along the tandem blade is studied for various relative blade positions. In all the studied cases, the front blade is fixed and the position of the rear blade is varied as a function of the axial and tangential displacements. A computer code was developed in "Visual Basic" using linear strength vortex-panel method to predict the aerodynamic performance of the tandem blade.

The European Physical Journal B, 2017

Abstract Quantum correlations are generally impossible to address directly in bulk systems. Quant... more Abstract Quantum correlations are generally impossible to address directly in bulk systems. Quantum measures extended only to a few number of parties can be discussed in practice. In the present work we study a cluster of spins belonging to a compound whose structure is that of a quantum magnet. We reproduce at a much smaller scale the experimental outcomes and then we study the role of quantum correlations there. A macroscopic entanglement witness has been introduced in order to reveal quantum correlations at nonzero temperatures. The critical point beyond which entanglement is zero is found at Tc = 15 K.

IOSR Journal of Mechanical and Civil Engineering, 2016

In this research, the philosophy of manufacturing the geogrids in their conventional shape is mod... more In this research, the philosophy of manufacturing the geogrids in their conventional shape is modified to let the friction between the ribs and soil particles have a noteworthy effect on the final resistance of soil reinforced by geogrids. Inspired by the belts used to link gears, both surfaces of the conventionalBiaxial Geogridwere reformed by adding cubic cogs distributed in a sine wave order on both sides of the ribs. The proposed geogrid shall be denominated "ICB-GGR"as an abbreviation for Isometric Cogged Biaxial Geogrid. In order to study the improvement in the soil-cogged geogridinteraction, prototypes of theconventional Biaxial geogrid and the modified ICB-GGR were manufactured of steel 37with the same dimensions of apertures and ribs. After many unsucccessful trials to manufacture polymeric geogrid prototypes due to some technical difficulties, steel 37 was the most appropriate material to accomplish the researchsince the main target isto investigate theshapeeffect of the proposed ICB-GGR.Pull-out tests were operated according toASTM D 6706-0101with some modifications to suit the laboratory preparations.The geogrid prototypes were used to reinforce uniformly graded sand and were tested under three different values of overburden pressures. The results showed that thepull-out resistance of the proposed ICB-GGR superior the conventional Biaxial Geogrid by about 50%.

Middle Eastern and African Perspectives on the Development of Public Relations, 2014

International Journal of Modern Physics B, 2016

Quantum correlations are considered analytically in a model that contains two coupled superconduc... more Quantum correlations are considered analytically in a model that contains two coupled superconducting charge qubits sharing a large Josephson junction. Dynamical properties for the reduced two-qubit state are addressed in the quantum evolution when the coupling between the field and the qubits is either constant or time-dependent. In the latter case, adiabatic and nonergodic features are present for extremely low and fast evolutions, respectively. Finally, the case where the coupling drops to zero is also considered.

Quantum Information Processing, 2016

Quantum correlations are thought to be the reason why certain quantum algorithms overcome their c... more Quantum correlations are thought to be the reason why certain quantum algorithms overcome their classical counterparts. Since the nature of this resource is still not fully understood, we shall investigate how multipartite entanglement and non-locality among qubits vary as the quantum computation runs. We shall encounter that quantum measures on the whole system cannot account for their corresponding speedup.