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Variational Iteration Method for Solving Time Fractional Burgers Equation Using Maple 被引量:1
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作者 Fayza Alwehebi aatef hobiny Dalal Maturi 《Applied Mathematics》 2023年第5期336-348,共13页
The Time Fractional Burger equation was solved in this study using the Mabel software and the Variational Iteration approach. where a number of instances of the Time Fractional Burger Equation were handled using this ... The Time Fractional Burger equation was solved in this study using the Mabel software and the Variational Iteration approach. where a number of instances of the Time Fractional Burger Equation were handled using this technique. Tables and images were used to present the collected numerical results. The difference between the exact and numerical solutions demonstrates the effectiveness of the Mabel program’s solution, as well as the accuracy and closeness of the results this method produced. It also demonstrates the Mabel program’s ability to quickly and effectively produce the numerical solution. 展开更多
关键词 Variational Iteration Method Time Fractional Burgers Equation Maple18
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Adomian Decomposition Method for Solving Time Fractional Burgers Equation Using Maple
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作者 Fayza Alwehebi aatef hobiny Dalal Maturi 《Applied Mathematics》 2023年第5期324-335,共12页
In this paper, the Adomian decomposition method was used to solve the Time Fractional Burger equation using Mabel program. This method was applied to a number of examples of the Time Fractional Burger Equation. The ob... In this paper, the Adomian decomposition method was used to solve the Time Fractional Burger equation using Mabel program. This method was applied to a number of examples of the Time Fractional Burger Equation. The obtained numerical results were presented in the form of tables and graphics. The difference between the exact solutions and the numerical solutions shows us the effectiveness of the solution using the Mabel program and that this method gave accurate results and was close to the exact solution, in addition to its ability to obtain the numerical solution quickly and efficiently using the Mabel program. 展开更多
关键词 Adomian Decomposition Method Time Fractional Burgers Equation Maple 18
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Effect of Time Delay and Antibodies on HCV Dynamics with Cure Rate and Two Routes of Infection
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作者 Ahmed M. Elaiw Shafeek A. Ghaleb aatef hobiny 《Journal of Applied Mathematics and Physics》 2018年第5期1120-1138,共19页
In this paper we propose and analyze an HCV dynamics model taking into consideration the cure of infected hepatocytes and antibody immune response. We incorporate both virus-to-cell and cell-to-cell transmissions into... In this paper we propose and analyze an HCV dynamics model taking into consideration the cure of infected hepatocytes and antibody immune response. We incorporate both virus-to-cell and cell-to-cell transmissions into the model. We incorporate a distributed-time delay to describe the time between the HCV or infected cell contacts an uninfected hepatocyte and the emission of new active HCV. We show that the solutions of the proposed model are nonnegative and ultimately bounded. We derive two threshold parameters which fully determine the existence and stability of the three steady states of the model. Using Lyapunov functionals, we established the global stability of the steady states. The theoretical results are confirmed by numerical simulations. 展开更多
关键词 HCV INFECTION Distributed Time Delay Global Stability CELL-TO-CELL Transmission LYAPUNOV Function
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Differential coupling contributes to synchronization via a capacitor connection between chaotic circuits 被引量:5
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作者 Yu-meng XU Zhao YAO +1 位作者 aatef hobiny Jun MA 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2019年第4期571-583,共13页
Nonlinear oscillators and circuits can be coupled to reach synchronization and consensus. The occurrence of complete synchronization means that all oscillators can maintain the same amplitude and phase, and it is ofte... Nonlinear oscillators and circuits can be coupled to reach synchronization and consensus. The occurrence of complete synchronization means that all oscillators can maintain the same amplitude and phase, and it is often detected between identical oscillators. However, phase synchronization means that the coupled oscillators just keep pace in oscillation even though the amplitude of each node could be different. For dimensionless dynamical systems and oscillators, the synchronization approach depends a great deal on the selection of coupling variable and type. For nonlinear circuits, a resistor is often used to bridge the connection between two or more circuits, so voltage coupling can be activated to generate feedback on the coupled circuits. In this paper, capacitor coupling is applied between two Pikovsk-Rabinovich(PR) circuits, and electric field coupling explains the potential mechanism for differential coupling. Then symmetric coupling and cross coupling are activated to detect synchronization stability, separately. It is found that resistor-based voltage coupling via a single variable can stabilize the synchronization, and the energy flow of the controller is decreased when synchronization is realized. Furthermore, by applying appropriate intensity for the coupling capacitor, synchronization is also reached and the energy flow across the coupling capacitor is helpful in regulating the dynamical behaviors of coupled circuits, which are supported by a continuous energy exchange between capacitors and the inductor. It is also confirmed that the realization of synchronization is dependent on the selection of a coupling channel. The approach and stability of complete synchronization depend on symmetric coupling, which is activated between the same variables. Cross coupling between different variables just triggers phase synchronization. The capacitor coupling can avoid energy consumption for the case with resistor coupling, and it can also enhance the energy exchange between two coupled circuits. 展开更多
关键词 SYNCHRONIZATION Voltage COUPLING CHAOTIC circuit CAPACITOR COUPLING
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A new photosensitive neuron model and its dynamics 被引量:6
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作者 Yong LIU Wan-jiang XU +2 位作者 Jun MA Faris ALZAHRANI aatef hobiny 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2020年第9期1387-1396,共10页
Biological neurons can receive inputs and capture a variety of external stimuli,which can be encoded and transmitted as different electric signals.Thus,the membrane potential is adjusted to activate the appropriate fi... Biological neurons can receive inputs and capture a variety of external stimuli,which can be encoded and transmitted as different electric signals.Thus,the membrane potential is adjusted to activate the appropriate firing modes.Indeed,reliable neuron models should take intrinsic biophysical effects and functional encoding into consideration.One fascinating and important question is the physical mechanism for the transcription of external signals.External signals can be transmitted as a transmembrane current or a signal voltage for generating action potentials.We present a photosensitive neuron model to estimate the nonlinear encoding and responses of neurons driven by external optical signals.In the model,a photocell(phototube)is used to activate a simple FitzHugh-Nagumo(FHN)neuron,and then external optical signals(illumination)are imposed to excite the photocell for generating a time-varying current/voltage source.The photocell-coupled FHN neuron can therefore capture and encode external optical signals,similar to artificial eyes.We also present detailed bifurcation analysis for estimating the mode transition and firing pattern selection of neuronal electrical activities.The sampled time series can reproduce the main characteristics of biological neurons(quiescent,spiking,bursting,and even chaotic behaviors)by activating the photocell in the neural circuit.These results could be helpful in giving possible guidance for studying neurodynamics and applying neural circuits to detect optical signals. 展开更多
关键词 Photosensitive neuron Neuron model BIFURCATION BURSTING PHOTOCELL
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Understanding the adsorption mechanism of Ni(II) on graphene oxides by batch experiments and density functional theory studies 被引量:6
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作者 Yuantao Chen WeiZhang +3 位作者 Shubin Yang aatef hobiny Ahmed Alsaedi Xiangke Wang 《Science China Chemistry》 SCIE EI CAS CSCD 2016年第4期412-419,共8页
The graphene oxides (GOs) have attracted multidisciplinary study because of their special physicochemical properties. The high surface area and large amounts of oxygen-containing functional groups make GOs suitable ... The graphene oxides (GOs) have attracted multidisciplinary study because of their special physicochemical properties. The high surface area and large amounts of oxygen-containing functional groups make GOs suitable materials for the efficient elimination of heavy metal ions from aqueous solutions. Herein the sorption of Ni(Ⅱ) on GOs was studied using batch experi- ments, and the results showed that the sorption of Ni(Ⅱ) is strongly dependent on pH and ionic strength at pH〈8, and inde- pendent of ionic strength at pH〉8. The sorption of Ni(Ⅱ) is mainly dominated by outer-sphere surface complexation and ion exchange at low pH, and by inner-sphere surface complexation at high pH. The interaction of Ni(Ⅱ) with GOs was also inves- tigated by theoretical density functional theory (DFT) calculations, and the results show that the sorption of Ni(Ⅱ) on GOs is mainly attributed to the -COH and -COC groups and the DFT calculations show that Ni(Ⅱ) forms stable GO_Ni_triplet struc- ture with the binding energy of -39.44 kcal/mol, which is in good agreement with the batch sorption experimental results. The results are important for the application of GOs as adsorbents in the efficient removal of Ni(Ⅱ) from wastewater in environ- mental pollution cleanup. 展开更多
关键词 graphene oxides Ni(Ⅱ) SORPTION DFT calculation
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High-capacity quantum secure direct communication with two-photon six-qubit hyperentangled states 被引量:2
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作者 FangZhou Wu GuoJian Yang +4 位作者 HaiBo Wang Jun Xiong Faris Alzahrani aatef hobiny FuGuo Deng 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2017年第12期19-25,共7页
This study proposes the first high-capacity quantum secure direct communication(QSDC) with two-photon six-qubit hyperentangled Bell states in two longitudinal momentum and polarization degrees of freedom(DOFs) of phot... This study proposes the first high-capacity quantum secure direct communication(QSDC) with two-photon six-qubit hyperentangled Bell states in two longitudinal momentum and polarization degrees of freedom(DOFs) of photon pairs, which can be generated using two 0.5 mm-thick type-I β barium borate crystal slabs aligned one behind the other and an eight-hole screen. The secret message can be independently encoded on the photon pairs with 64 unitary operations in all three DOFs. This protocol has a higher capacity than previous QSDC protocols because each photon pair can carry 6 bits of information, not just 2 or 4 bits.Our QSDC protocol decreases the influence of decoherence from environment noise by exploiting the decoy photons to check the security of the transmission of the first photon sequence. Compared with two-way QSDC protocols, our QSDC protocol is immune to an attack by an eavesdropper using Trojan horse attack strategies because it is a one-way quantum communication.The QSDC protocol has good applications in the future quantum communication because of all these features. 展开更多
关键词 quantum secure direct communication high capacity hyperentanglement two-photon six-qubit systems decoy photons
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Self-error-rejecting photonic qubit transmission in polarization-spatial modes with linear optical elements
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作者 YuXiao Jiang PengLiang Guo +4 位作者 ChengYan Gao HaiBo Wang Faris Alzahrani aatef hobiny FuGuo Deng 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2017年第12期12-18,共7页
We present an original self-error-rejecting photonic qubit transmission scheme for both the polarization and spatial states of photon systems transmitted over collective noise channels. In our scheme, we use simple li... We present an original self-error-rejecting photonic qubit transmission scheme for both the polarization and spatial states of photon systems transmitted over collective noise channels. In our scheme, we use simple linear-optical elements, including half-wave plates, 50:50 beam splitters, and polarization beam splitters, to convert spatial-polarization modes into different time bins. By using postselection in different time bins, the success probability of obtaining the uncorrupted states approaches 1/4 for singlephoton transmission, which is not influenced by the coefficients of noisy channels. Our self-error-rejecting transmission scheme can be generalized to hyperentangled n-photon systems and is useful in practical high-capacity quantum communications with photon systems in two degrees of freedom. 展开更多
关键词 photon transmission error correction collective-noise channel spatial-polarization modes quantum communication
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