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Journal of Mountain Science 2023年第5期20卷 1385-1401页

作者： mohsen JAMI Alireza DOCHESHMEH GORGIJ Mining Engineering Group Industry and Mining Faculty(khash)University of Sistan and Baluchesan+009854IRAN

There are various faults in northern and southern margins of Torbat-e-Jam-Fariman plain which show the probability of enormous earthquake in the *** present study the geomorphic indices contain Asymmetry Function(Af),Sinuosity of mountain front(Smf),Valley floor index(Vf),Hypsometric index(Hi),Mean Axial slope of channel index(MASC)and Drainage Basin Shape(Bs),have been utilized to determine the relative tectonic activity index(IAT)to recognize,eventually,the geo-structural model of the study *** and folds control the geo-structural activities of the study area,and the geomorphic indices are being affected in consequence of their *** intensity of these activities is different throughout the *** are many geomorphic evidences,related to active transform fault which are detectable all over the study area such as deviated rivers,quaternary sediments transformation,fault ***,recognition of geo-structural model of the study area is extremely *** study,then,approved the results of geomorphic indices calculation in determining the geo-structural model of the study *** depicted that the geostructural model of the study area is a kind of Horsetail splay form which is in accordance to the relative tectonic activity of the study *** on the above mentioned results it can be predicted that the splays are the trail of Neyshabour fault.

关键词： Fault Geo-structural Model Relative tectonic activity Geomorphic indices Horsetail Splay

Optimal design of structures for earthquake loads by a hybrid RBF-BPSO method

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Earthquake Engineering and Engineering Vibration 2008年第1期7卷 13-24页

作者： Eysa Salajegheh Saeed Gholizadeh mohsen Khatibinia Department of Civil Engineering University of Kerman Kerman lran

The optimal seismic design of structures requires that time history analyses （THA） be carried out repeatedly. This makes the optimal design process inefficient, in particular, if an evolutionary algorithm is used. To reduce the overall time required for structural optimization, two artificial intelligence strategies are employed. In the first strategy, radial basis function （RBF） neural networks are used to predict the time history responses of structures in the optimization flow. In the second strategy, a binary particle swarm optimization （BPSO） is used to find the optimum design. Combining the RBF and BPSO, a hybrid RBF-BPSO optimization method is proposed in this paper, which achieves fast optimization with high computational performance. Two examples are presented and compared to determine the optimal weight of structures under earthquake loadings using both exact and approximate analyses. The numerical results demonstrate the computational advantages and effectiveness of the proposed hybrid RBF-BPSO optimization method for the seismic design of structures.

关键词： earthquake optimization binary particle swarm neural networks radial basis function

Spatial correlation between groundwater seepage faces and fault zone in high bedrock channel: method and application

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Journal of Mountain Science 2021年第2期18卷 558-566页

作者： Yaser NIKPEYMAN mohsen EHTESHAMI-MOINABADi Department of Minerals and Groundwater Resources Faculty of Earth SciencesShahid Beheshti UniversityTehran ***Iran Department of Sedimentary Basins and Petroleum Faculty of Earth SciencesShahid Beheshti UniversityTehran ***Iran

The groundwater may recharge the surface water bodies through seepage faces and *** spatial correlation between the fault zones and the groundwater seepage faces results in deep understanding of the hydrogeologic regime,especially where there is no monitoring *** these recharging zones by conventional methods is a challenging task;particularly in areas where(1)there is no hydrogeologic monitoring boreholes or reliable data,(2)private pumps withdraw the stream,and(3)intense canopy limits the use of drones and satellite *** paper aims to study the relationship between the fault zones and occurrence of the groundwater seepage faces by using the high resolution handheld thermal imaging cameras as a tool to locate the seepage faces along a small river in the Damavand County,north of *** correlation between the structural geology features and occurrence of the groundwater seepage faces revealed that the stream in the study area is being recharged by the groundwater at extensive fault ***,this study suggests that the handheld thermal imaging cameras are a useful robust tools to evaluate the surface-groundwater ***,it is essential to use the field structural geologic and hydrogeologic observations to interpret the thermal images.

关键词： Damavand aquifer Fault zone Iran River Seepage face Thermal imaging camera

The interaction of history and modern thought in the creation of Iran’s architecture by investigating the approaches of past-oriented architecture

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Frontiers of Architectural Research 2024年第3期13卷 459-486页

作者： mohsen Kamali Department of Architecture Faculty of Arts and ArchitectureYazd UniversityYazdIran

The relationship between tradition and modernity significantly influences society,culture,and architectural *** philosophy offers a framework for exploring the impact of traditional architecture on contemporary Iranian architecture from different perspectives and *** viewpoints exist on whether historical architecture can be a defining characteristic of contemporary architectural *** an in-depth review of analysis-centred architectural literature,a unique method was chosen for analysing contemporary architecture and gaining insight into its *** main goal of this study is to establish a productive relationship between past-oriented architecture,innovative architectural concepts,and contemporary *** article examines three critical viewpoints,tradition as imitation,transmission,and transformation,alongside analysing their influential components on architectural form to gain insight into productively connecting with historical achievements and show that the role of history is to add new values to architecture-conscious needs that have changed during ***,the challenge lies in finding a suitable path among diverse perspectives and reinterpretations and establishing a productive relationship with history and contemporary thought.

关键词： Tradition Modernism Past-oriented architecture Contemporary Iranian architecture Concept-oriented architecture Contemporary architectural approaches

Cloud service selection using cloud service brokers: approaches and challenges

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Frontiers of Computer Science 2019年第3期13卷 599-617页

作者： Meysam VAKILI Neda JAHANGIRI mohsen SHARIFI Department of Computer Engineering University of Science and Culture Tehran 14619-68151 Iran School of Computer Engineering Iran University of Science and Technology Tehran 16846-13114 Iran

Cloud computing users are faced with a wide variety of services to choose from. Consequently, a number of cloud service brokers (CSBs) have emerged to help users in their service selection process. This paper reviews the recent approaches that have been introduced and used for cloud service brokerage and discusses their challenges accordingly. We propose a set of attributes for a CSB to be considered effective. DifFerent CSBs' approaches are classified as either single service or multiple service models. The CSBs are then assessed, analyzed, and compared with respect to the proposed set of attributes. Based on our studies, CSBs with multiple service models that support more of the proposed effective CSB attributes have wider application in cloud computing environments.

关键词： cloud service broker (CSB) cloud service selection cloud computing quality of service (QoS)

Evolving Hoava cosmological horizons

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Chinese Physics C 2016年第9期40卷 63-74页

作者： mohsen Fathi Morteza mohseni Department of Physics Payame Noor University(PNU)P.O.Box 19395—3697 TehranI R.of Iran

Several sets of radially propagating null congruence generators are exploited in order to form 3-dimensional marginally trapped surfaces, referred to as black hole and cosmological apparent horizons in a Hoava universe. Based on this method, we deal with the characteristics of the 2-dimensional space-like spheres of symmetry and the peculiarities of having trapping horizons. Moreover, we apply this method in standard expanding and contracting FLRW cosmological models of a Horava universe to investigate the conditions under which the extra parameters of the theory may lead to trapped/anti-trapped surfaces both in the future and in the past. We also include the cases of negative time, referred to as the finite past, and discuss the formation of anti-trapped surfaces inside the cosmological apparent horizons.

关键词： Horava universe standard cosmology null congruence expansion black hole horizons white holes

Fouling of WO3 nanoparticle-incorporated PSf membranes in ultrafiltration of landfill leachate and dairy a combined wastewaters： An investigation using model

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Chinese Journal of Chemical Engineering 2017年第6期25卷 741-751页

作者： Majid Peyravi mohsen Jahanshahi Soodabeh Khalili Nanoenvironment Research Group Nanotechnology Institute Faculty of Chemical Engineering Babol Noshirvani University of Technolog~ Babol lran

As fouling has always been a major drawback of membrane technology, qualitative and quantitative understanding of membrane fouling mechanisms therefore becomes vital in order to help push membrane separation technologies forward. In this study, firstly, self-cleaning Polysulfone(PSf) membranes were synthesized by incorporation of WO_3nanoparticles(0–2 wt%) and subsequent UV irradiation for efficient ultrafiltration(UF)of landfill leachate and dairy wastewater. The membrane surface properties were characterized by scanning electron microscopy(SEM) and contact angle analysis. It was found that UV-irradiated membranes exhibited higher percent COD removals due to the hydrophilicity and photocatalytic properties of nano-WO_3. Subsequently, in order to analyze the fouling behavior of the membranes, a set of experimental data from cross-flow ultrafiltration of municipal landfill leachate and industrial dairy wastewater at 25 °C was obtained. A new model of membrane fouling was proposed based on a resistance in series concept and was fitted well with all experimental data *** all relative errors of prediction provided by the proposed model were less than 2.5%. In addition, it was revealed that this newly-developed model exhibited smooth transition between the common successive twostep pore blockage-cake filtration phenomena and thus eliminates the need to use separate equations for different mechanisms.

关键词： Fouling model Leachate wastewater Ultrafiltration Whey wastewater Chemical oxygen demand

Evolutionary algorithm for optimization of multilayer coatings

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Chinese Physics B 2018年第10期27卷 531-536页

作者： Mahdi Ebrahimi mohsen Ghasemi Zeinab Sajjadi Department of Physics Payame Noor University Department of Physics Faculty of SciencesShahrekord University Department of Computer & Mathematics Sheikhbahaee University

In this paper, a new evolutionary algorithm, the well-known imperialist competition algorithm, is proposed for optimizing the optical thin-films. In this method, the process is modeled of the competition between countries as imperialists and their colonizing of others as colonies. This algorithm could be an appropriate alternative to some of the more popular algorithms for optimizing the optical thin-films for good performance. The polarizer and edge filter for example are designed by using the imperialist competition algorithm method and the results are compared with those from two optimization high-performance methods： the genetic algorithm and differential evolutionary algorithm. Based on these results,the performance of the imperialist competition algorithm method shows that this algorithm is not sensitive to the change of its parameters and it can be an important advantage for quickly achieving a global optimal point. On the other hand the results show a better ratio of P-polarization transmittance to S-polarization transmittance in the design of a 1540-nm polarizer, which is more appropriate than the results from the other two methods. In the second design, an edge filter with a lower number of layers and more uniform bandpass spectrum than the counterparts of those methods is obtained. These results indicate that the imperialist competition algorithm is a robust method for optical thin-film designs.

关键词： multilayers optimization thin-film imperialist competition algorithm

Equating incremental dynamic analysis with static nonlinear analysis at near-field excitation

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Earthquake Engineering and Engineering Vibration 2015年第3期14卷 465-476页

作者： Asghar Bahramirad mohsen Tehranizadeh Amir Moshref Department of Civil and Environmental Engineering Amir Kabir University of Technology

In an incremental dynamic analysis(IDA) using a set of ground motion records,nonlinear time history analysis needs to be performed on *** is well recognized that IDA calls for high computational efforts and the results are highly sensitive to selected ground *** a result,alternative static methods are *** study aims to introduce a new double-stage(N1- N2) static method to estimate capacity curves of MR *** technique is regulated to resemble IDA results with specific emphasis on near-field ground *** an ensemble of 56 near-field earthquake records,required ID As have been carried out for SAC-Los Angeles 3-,9- and 20-story buildings and an additional 15-story *** results of the proposed static method are compared with those from IDA,displacement-based adaptive procedure(DAP),and multimodal procedure(MMP).The results indicate that in addition to enhanced accuracy,very little time is required in the case of N1-N2 ***,for the 3-story structure,the time required is less than 1 *** proposed N1-N2 method shows the best accuracy in terms of lateral mechanisms for the 15-story frame while for the other cases,the first mode load pattern leads to the best accuracy.

关键词： incremental dynamic analysis new adaptive static p

Improvement in the protective performance and adhesion of polypyrrole coating on AZ31 Mg alloys

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Progress in Natural Science:Materials International 2015年第5期25卷 478-485页

作者： Maryam Hatami mohsen Saremi Reza Naderi School of Metallurgy and Materials Engineering Faculty of Engineering University of Tehran

The electrochemical synthesis of polypyrrole(Ppy) coating on AZ31 magnesium alloy was successfully achieved in a solution containing sodium salicylate and monomer of pyrrole through cyclic voltammetry *** effect of potential range,passivation pretreatment and number of cycles of polymerization on the quality and protective performance of the coatings was evaluated using surface analysis and electrochemical *** taking the advantage of charge transfer resistance,current density,corrosion potential,optical microscopy images and SEM micrographs,the optimum condition of synthesis of a Ppy coating with the best adhesion and corrosion protection was *** optimal PPy coating synthesized over AZ31 increases the polarization resistance and decreases the corrosion current more than one order of magnitude and shift the corrosion potential about 200 mV toward nobler *** SEM studies showed that Ppy coating have cauliflower morphology of Ppy grains with a diameter ranging from 20 nm to 60 nm.

关键词： PolyPyrrole AZ31 Mg Cyclic voltammetry Electropolymerization Corrosion protection