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Journal of Computational Mathematics 2023年第1期41卷 153-172页

作者： Maryam Yazdi Saeed Hashemi Sababe young researchers and Elite club Malard BranchIslamic Azad UniversityMalardIran Department of mathematical and statistical sciences University of AlbertaEdmontonCanada Young Researchers and Elite ClubMalard BranchIslamic Azad UniversityMalardIran

In this paper,we introduce a new iterative method based on the hybrid viscosity approximation method for finding a common element of the set of solutions of a general system of variational inequalities,an equilibrium problem,and the set of common fixed points of a countable family of nonexpansive mappings in a Hilbert *** prove a strong convergence theorem of the proposed iterative scheme under some suitable conditions on the ***,we apply our main result for ***,we give two numerical results to show the consistency and accuracy of the scheme.

关键词： Equilibrium problem Iterative method Fixed point Variational inequality

First Record of Sexual Dimorphism in Toxasterid Echinoid Heteraster from the Early Cretaceous Deposits of the Kopet-Dagh Basin,NE Iran

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地质学报:英文版 2023年第5期97卷 1318-1334页

作者： Hossein KAMYABI SHADAN Morteza TAHERPOUR KHALIL-ABAD Exploration Directorate of the National Iranian Oil Company TehranIran young researchers and Elite club Mashhad BranchIslamic Azad UniversityMashhadIran

Spatangoid echinoids belonging to Heteraster found in the Lower Cretaceous limestones and calcareous deposits of the Tirgan and Sarcheshmeh formations(Barremian-Aptian)in the Bahman jan-Bala stratigraphic section on the northern flank of the Borouj syncline,situated in the eastern Kopet-Dagh Basin,northeastern Iran are assessed as a sexually dimorphic *** dimorphism is a common feature in echinoids and,in this study of Heteraster renngarteni Poretzkaja,1961,sexual dimorphism has been detected for the first time in the family Toxasteridae.

关键词： invertebrate paleontology echinodermata Heteraster sexual dimorphism Barremian–Aptian Kopet-Dagh Iran

Entanglement of three-level atomic system and spontaneous emission fields in a vacuum and near the 1D photonic crystal band gap

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Optoelectronics Letters 2022年第11期18卷 687-693页

作者： Jalil Shiri Javad Khalilzadeh Seyyed Hossein Asadpour Department of Photonics Faculty of SciencesImam Hossein UniversityTehranlran young researchers and Elite club Central Tehran BranchIslamic Azad UniversityTehranIlran

The time evolution of the quantum entropy in a GaAs/AlAs one-dimensional photonic crystal(1DPC) with an atomic system defect layer is investigated in this work. The entanglement between atomic system and their spontaneous emission fields near the edge of the photonic band gap(PBG) is coherently controlled by the coupling field. Comparison between the atom-photon entanglement of the atomic system in the vacuum surrounding and that near the PBG of the 1DPC shows that the degree of entanglement strongly depends on the PBG. We find that degree of entanglement is strongly dependent on the intensity and detuning of the coupling and probe fields. Furthermore, the effect of the phase difference between applied fields on the atom-photon entanglement is studied. The potentially possible technological applications can be provided by the proposed model in the quantum optics and quantum communications based on photonic crystal.

关键词： field system vacuum

Synthesis and Crystal Structure of 2-(4-Chlorophenyl)-1,4,5-triphenyl-1H-imidazole

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Chinese Journal of Structural Chemistry 2012年第4期31卷 574-576页

作者： Ali Mohammad Amani Kazem Barati young researchers club Shiraz BranchIslamic Azad University young researchers club Yasooj BranchIslamic Azad University

The compound 2-（4-chlorophenyl）-1,4,5-triphenyl-1H-imidazole（1,C27H19ClN2） has been synthesized and its crystal structure was determined by single-crystal X-ray *** crystal of 1 belongs to the triclinic system,space group P with a = 10.3350（19）,b = 10.238（2）,c = 11.201（2） ,α = 85.957（16）,β = 83.148（15）,γ = 66.467（15）°,V = 1078.5（4） 3,Mr = 406.89,Z = 2,F（000） = 422,Dc = 1.257 g/cm3,μ = 0.193 mm-1,T = 298（2） K,S = 1.092,R = 0.0702 and wR = *** imidazole ring system is planar and makes a dihedral angle of 40.3° with the chlorobenzene ring.

关键词： crystal structure imidazole triclinic system

Total Pairwise Quantum Correlation and Entanglement in a Mixed-Three-Spin Ising-XY Model with Added Dzyaloshinskii-Moriya Interaction under Decoherence

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Chinese Physics Letters 2016年第9期33卷 5-9页

作者： H.A.Zad young researchers and Elite club Mashhad BranchIslamic Azad University

We investigate the behavior of geometric global quantum discord （GGQD） and concurrence （C） between half- spins of a mixed-three-spin （1/2, 1, 1/2） system with the Ising-XY model for which spins （1, 1/2） have the Ising interaction and half-spins （1/2, 1/2） have both XY and the Dzyaloshinskii Moriya interactions together, under the decoherence action. A single-ion anisotropy property with coefficient ζ is assumed for the spin-integer. This system which includes an analytical Hamiltonian is considered at the front of an external homogeneous magnetic field B in thermal equilibrium. Finally, we compare GGQD and C and express some interesting phase flip reactions of the total quantum correlation and pairwise entanglement between spins （1/2, 1/2）. Generally, we conclude that the concurrence and GGQD have different behaviors under the phase flip channel.

关键词： of is in for Total Pairwise Quantum Correlation and Entanglement in a Mixed-Three-Spin Ising-XY Model with Added Dzyaloshinskii-Moriya Interaction under Decoherence with

Two new methods for power flow tracing using bus power balance equations

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Journal of Central South University 2014年第7期21卷 2712-2718页

作者： Noradin Ghadimi young researchers club Ardabil BranchIslamic Azad University

Two new methods were presented for power flow tracing(PFT).These two methods were compared and the results were discussed in *** methods use the active and reactive power balance equations at each bus in order to solve the tracing *** first method considers the proportional sharing assumption while the second one uses the circuit laws to find the relationship between power inflows and outflows through each line,generator and load connected to each bus of the *** methods are able to handle loop flow and loss issues in tracing problem.A formulation is also proposed to find the share of each unit in provision of each *** methods are applied to find the producer and consumer's shares on the cost of transmission for each line in different case *** the results of these studies show,both methods can effectively solve the PFT problem.

关键词：平衡方程潮流跟踪总线电源跟踪问题负载功率无功功率流失问题

Developing energy forecasting model using hybrid artificial intelligence method

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Journal of Central South University 2015年第8期22卷 3026-3032页

作者： Shahram Mollaiy-Berneti young researchers and Elites club Bandar Abbas Branch Islamic Azad University

An important problem in demand planning for energy consumption is developing an accurate energy forecasting model. In fact, it is not possible to allocate the energy resources in an optimal manner without having accurate demand value. A new energy forecasting model was proposed based on the back-propagation(BP) type neural network and imperialist competitive algorithm. The proposed method offers the advantage of local search ability of BP technique and global search ability of imperialist competitive algorithm. Two types of empirical data regarding the energy demand(gross domestic product(GDP), population, import, export and energy demand) in Turkey from 1979 to 2005 and electricity demand(population, GDP, total revenue from exporting industrial products and electricity consumption) in Thailand from 1986 to 2010 were investigated to demonstrate the applicability and merits of the present method. The performance of the proposed model is found to be better than that of conventional back-propagation neural network with low mean absolute error.

关键词：预测模型人工智能方法误差反向传播神经网络国内生产总值能源资源能量开发混合

Development of a least squares support vector machine model for prediction of natural gas hydrate formation temperature

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中国化学工程学报：英文版 2017年第9期25卷 1238-1248页

作者： Mohammad Mesbah Ebrahim Soroush Mashallah Rezakazemi young researchers and Elites club Science and Research Branch Islamic Azad University young researchers and Elites club Ahvaz Branch Islamic Azad University Department of Chemical Engineering Shahrood University of Technology

Hydrates always are considered as a threat to petroleum industry due to the operational problems it can *** problems could result in reducing production performance or even production stoppage for a long *** this paper, we were intended to develop a LSSVM algorithm for prognosticating hydrate formation temperature(HFT) in a wide range of natural gas mixtures. A total number of 279 experimental data points were extracted from open literature to develop the LSSVM. The input parameters were chosen based on the hydrate structure that each gas species form. The modeling resulted in a robust algorithm with the squared correlation coefficients(R^2) of 0.9918. Aside from the excellent statistical parameters of the model, comparing proposed LSSVM with some of conventional correlations showed its supremacy, particularly in the case of sour gases with high H_2S concentrations, where the model surpasses all correlations and existing thermodynamic models. For detection of the probable doubtful experimental data, and applicability of the model, the Leverage statistical approach was performed on the data sets. This algorithm showed that the proposed LSSVM model is statistically valid for HFT prediction and almost all the data points are in the applicability domain of the model.

关键词： Hydrate formation temperature(HFT) Natural gas Sour gases Least squares support vector machine Outlier diagnostics Leverage approach

Influence of Non-Maxwellian Particles on Dust Acoustic Waves in a Dusty Magnetized Plasma

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Communications in Theoretical Physics 2013年第11期60卷 615-622页

作者： M.Nouri Kadijani H.Zareamoghaddam young researchers and Elite club Kashmar Branch Islamic Azad University

In this paper an investigation into dust acoustic solitary waves(DASWs) in the presence of superthermal electrons and ions in a magnetized plasma with cold dust grains and trapped electrons is discussed. The dynamic of both electrons and ions is simulated by the generalized Lorentzian(κ) distribution function(DF). The dust grains are cold and their dynamics are studied by hydrodynamic equations. The basic set of fluid equations is reduced to modified Korteweg-de Vries(mKdV) equation using Reductive Perturbation Theory(RPT). Two types of solitary waves, fast and slow dust acoustic soliton(DAS) exist in this plasma. Calculations reveal that compressive solitary structures are possibly propagated in the plasma where dust grains are negatively(or positively) charged. The properties of DASs are also investigated numerically.

关键词：磁化等离子体尘埃声波麦克斯韦流体动力学方程粒子尘土尘埃颗粒分布函数

Developing a Support Vector Machine Based QSPR Model to Predict Gas-to-Benzene Solvation Enthalpy of Organic Compounds

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物理化学学报 2017年第5期33卷 918-926页

作者： GOLMOHAMMADI Hassan DASHTBOZORGI Zahra KHOOSHECHIN Sajad young researchers and Elite club Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch Islamic Azad University young researchers and Elite club Central Tehran Branch Islamic Azad University

The purpose of this paper is to present a novel way to building quantitative structure-property relationship(QSPR) models for predicting the gas-to-benzene solvation enthalpy(ΔHSolv) of 158 organic compounds based on molecular descriptors calculated from the structure alone. Different kinds of descriptors were calculated for each compounds using dragon package. The variable selection technique of enhanced replacement method(ERM) was employed to select optimal subset of descriptors. Our investigation reveals that the dependence of physico-chemical properties on solvation enthalpy is a nonlinear observable fact and that ERM method is unable to model the solvation enthalpy accurately. The standard error value of prediction set for support vector machine(SVM) is 1.681 kJ ? mol^(-1) while it is 4.624 kJ ? mol^(-1) for ERM. The results established that the calculated ΔHSolvvalues by SVM were in good agreement with the experimental ones, and the performances of the SVM models were superior to those obtained by ERM one. This indicates that SVM can be used as an alternative modeling tool for QSPR studies.

关键词：数量的结构-财产关系气体-到-苯媒合焓描述符提高了复位成本折旧法支承矢量机器