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A complex solution on the dynamic response of sandwich graphene-reinforced aluminum-based composite beams with copper face sheets under two moving constant loads on an elastic foundation

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International Journal of Mechanical System Dynamics 2023年第3期3卷 251-264页

作者： mohammadreza Eghbali seyed Amirhosein hosseini Department of Mechanical Engineering University of ZanjanZanjanIran Department of Industrial Mechanical and Aerospace EngineeringBuein Zahra Technical UniversityQazvinIran

An analytical solution was used to investigate the elastic response of a sandwich beam with a graphene-reinforced aluminum-based composite(GRAC)on an elastic foundation using copper as the face layer of the functionally graded composite beam and a simply supported boundary ***'s higher-order shear deformation theory was utilized to derive the equations,which were solved in Laplace space and then converted into space–time using Laplace *** exact response of the GRAC sandwich beam was obtained by considering the displacement at the mid-span of the sandwich *** moving loads with different speed ratios were applied at a single point,and the effect of various parameters,including the spring constant,the speed ratio,the percentage of graphene,the moving load speed,and the distribution pattern,was *** study aimed to eliminate any overlap and improve the accuracy of the *** exact solving method presented has not been reported in other articles so ***,due to the difficulty of solving mathematical equations,this method is only applicable to simple boundary conditions.

关键词： GRAC beams moving load Laplace transform elastic foundation analytical solution aluminum-based

Land-use change and carbon stocks: A case study, Noor County, Iran

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Journal of Forestry Research 2013年第3期24卷 461-469页

作者： Niloufar Haghdoost Moslem Akbarinia seyed Mohsen hosseini Department of Forestry Faculty of Natural Resources Tarbiat Modares UniversityNoor Mazandaran Iran. Postal code: 46417-76489 Department of Forestry Faculty of Natural Resources Tarbiat Modares UniversityNoor Mazandaran Iran

Land-use changes and land cover strongly influence carbon stock and distribution within ecosystems. Changing the land-use from natural forest to other land-uses has been more rapid in the past few decades than at any time in Iran＇s history. In this study, we investigated the effects of changing the land-use from natural forest to other land-uses on carbon stocks in northern Iran. We selected five sites for this study：（I） a natural forest, （II） an agricultural field and （III） plantations of three different species （Alnus subcordata .L, Acer velutinum .Boiss and Cu- pressus sempervirens）. We examined the effects of land-use changes on：（I） soil carbon stock （0-50 cm depth）, （II） biomass and carbon content of grassy vegetation and litter and （III） above- and below-ground biomass C in trees. Soil C stock was higher under A. velutinum and C. sempervirens whereas it was lower under A. subcordata and agricultural sites. Biomass and C content of grassy vegetation were significantly higher at A. veluti- num and C. sempervirens plantations. However, litter biomass and C content were significantly higher at the natural forest site. Natural forest had the highest amount of C content in above- and below-ground bio- mass. Total ecosystem C stocks declined following land-use changes.

关键词： biomass climate change mitigation Hyrcanian forests plan-tation soil organic carbon

Geometrically Nonlinear Analysis of Structures Using Various Higher Order Solution Methods: A Comparative Analysis for Large Deformation

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Computer Modeling in Engineering & Sciences 2019年第12期121卷 877-907页

作者： Ali Maghami Farzad Shahabian seyed Mahmoud hosseini Civil Engineering Department Faculty of EngineeringFerdowsi University of MashhadMashhadIran Industrial Engineering Department Faculty of EngineeringFerdowsi University of MashhadMashhadIran

The suitability of six higher order root solvers is examined for solving the nonlinear equilibrium equations in large deformation analysis of *** applied methods have a better convergence rate than the quadratic Newton-Raphson *** six methods do not require higher order derivatives to achieve a higher convergence *** algorithms are developed to use the higher order methods in place of the Newton-Raphson method to solve the nonlinear equilibrium equations in geometrically nonlinear analysis of *** higher order methods are applied to both continuum and discrete problems(spherical shell and dome truss).The computational cost and the sensitivity of the higher order solution methods and the Newton-Raphson method with respect to the load increment size are comparatively *** numerical results reveal that the higher order methods require a lower number of iterations that the Newton-Raphson method to *** is also shown that these methods are less sensitive to the variation of the load increment *** it is indicated in numerical results,the average residual reduces in a lower number of iterations by the application of the higher order methods in the nonlinear analysis of structures.

关键词： Geometrically nonlinear analysis higher order methods predictor-corrector algorithms convergence rate sensitivity to the increment size

Matching user identities across social networks with limited profile data

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Frontiers of Computer Science 2020年第6期14卷 171-184页

作者： Ildar NURGALIEV Qiang QU seyed Mojtaba hosseini BAMAKAN Muhammad MUZAMMAL Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055China Sberbank Moscow 121170Russia Department of Management Yazd UniversityYazd 89195-741Iran Department of Computer Science Bahria UniversityIslamabad 44000Pakistan

Privacy preservation is a primary concern in social networks which employ a variety of privacy preservations mechanisms to preserve and protect sensitive user information including age,location,education,interests,and *** task of matching user identities across different social networks is considered a challenging *** this work,we propose an algorithm to reveal user identities as a set of linked accounts from different social networks using limited user profile data,i.e,user-name and ***,we propose a framework,ExpandUIL,that includes three standalone al-gorithms based on(i)the percolation graph matching in Ex-pand FullName algorithm,(i)a supervised machine learning algorithm that works with the graph embedding,and(ii)a combination of the two,ExpandUserLinkage *** proposed framework as a set of algorithms is significant as,(i)it is based on the network topology and requires only name feature of the nodes,(i)it requires a considerably low initial seed,as low as one initial seed suffices,(ii)it is iterative and scalable with applicability to online incoming stream graphs,and(iv)it has an experimental proof of stability over a real ground-truth *** on real datasets,Instagram and VK social networks,show upto 75%recall for linked ac-counts with 96%accuracy using only one given seed pair.

关键词： social networks user identity linkage graph structure learning,maximum subgraph matching graph percolation

Characterization of synbiotic films based on carboxymethyl cellulose/β-glucan and development of a shelf life prediction model

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Food Bioscience 2023年第1期51卷 762-772页

作者： Sahar seyedzadeh-Hashemi Vahid Mofid seyede Marzieh hosseini seyed mohammad Taghi Gharibzahedi Amir mohammad Mortazavian Saeedeh Shojaee-Aliabadi Department of Food Science and Technology Faculty of Nutrition Sciences and Food TechnologyNational Nutrition and Food Technology Research InstituteShahid Beheshti University of Medical SciencesTehranIran Institute of Materials Science Faculty of EngineeringKiel University24143KielGermany Institute of Chemistry Technische Universit¨at BerlinStraße des 17.Juni 12410623BerlinGermany

Carboxymethyl cellulose(CMC)/β-glucan(BG)-based films(100:0,75:25,50:50,25:75)were developed and characterized to extend the survivability of Lactobacillus acidophilus LA-5 and establish a shelf life prediction *** incorporation of inulin(IL,2%and 4%)into the CMC matrix was also *** containing 2%IL and 50%BG were selected to develop probiotic films due to their suitable physicomechanical and barrier ***-transform infrared(FT-IR)spectroscopy spectra and scanning electron microscopy(SEM)images showed good compatibility between prebiotics and CMC films *** tensile strength and water vapor permeability(WVP)of films reduced by prebiotics addition,their oxygen barrier and extensibility were significantly *** viability of probiotic cells was observed in film containing BG;at 4℃(8.3 Log CFU/g),10℃(8.06 Log CFU/g)and 25℃(7.37 Log CFU/g),and under simulated gastrointestinal conditions(7.87 Log CFU/g).This new edible film would be inspiring for future bioactive-loaded packaging.

关键词： Biodegradable film Carboxymethyl cellulose β-glucan Inulin Probiotic viability Shelf life prediction Simulated digestion

APG: A novel python-based ArcGIS toolbox to generate absence-datasets for geospatial studies

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Geoscience Frontiers 2021年第6期12卷 90-104页

作者： seyed Amir Naghibi hossein Hashemi Biswajeet Pradhan Department of Water Resources Engineering&Center for Advanced Middle Eastern Studies Lund UniversityLundSweden Centre for Advanced Modelling and Geospatial Information Systems(CAMGIS) Faculty of Engineering and Information TechnologyUniversity of Technology SydneyNew South WalesAustralia Department of Energy and Mineral Resources Engineering Sejong UniversityChoongmu-gwan209 Neungdong-ro Gwangjin-guSeoul 05006Republic of Korea Department of Meteorology King Abdulaziz UniversityP.O.Box 80234Jeddah 21589Saudi Arabia Earth Observation Centre Institute of Climate ChangeUniversiti Kebangsaan MalaysiaBangiSelangorMalaysia

One important step in binary modeling of environmental problems is the generation of absence-datasets that are traditionally generated by random sampling and can undermine the quality of *** solve this problem,this study develops the Absence Point Generation(APG)toolbox which is a Python-based ArcGIS toolbox for automated construction of absence-datasets for geospatial *** APG employs a frequency ratio analysis of four commonly used and important driving factors such as altitude,slope degree,topographic wetness index,and distance from rivers,and considers the presence locations buffer and density layers to define the low potential or susceptibility zones where absence-datasets are *** test the APG toolbox,we applied two benchmark algorithms of random forest(RF)and boosted regression trees(BRT)in a case study to investigate groundwater potential using three absence datasets i.e.,the APG,random,and selection of absence samples(SAS)*** BRT-APG and RF-APG had the area under receiver operating curve(AUC)values of 0.947 and 0.942,while BRT and RF had weaker performances with the SAS and Random *** effect resulted in AUC improvements for BRT and RF by 7.2,and 9.7%from the Random dataset,and AUC improvements for BRT and RF by 6.1,and 5.4%from the SAS dataset,*** APG also impacted the importance of the input factors and the pattern of the groundwater potential maps,which proves the importance of absence points in environmental binary *** proposed APG toolbox could be easily applied in other environmental hazards such as landslides,floods,and gully erosion,and land subsidence.

关键词： Absence-dataset Classification Python Machine learning algorithms GIS Groundwater Hydrogeology

Mathematical model and energy analysis of ethane dehydration in two-layer packed-bed adsorption

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Particuology 2019年第6期17卷 33-40页

作者： Yadollah Tavan Seyyed hossein hosseini Goodarz Ahmadi Martin Olazar Chemical and Petroleum Engineering Department Sharif University of TechnologyAzadi Av.TehranIran Chemical Engineering Department Faculty of EngineeringIlam University69315-516 IlamIran Department of Mechanical and Aeronautical Engineering Clarkson UniversityPotsdamNY 13699-5725USA Department of Chemical Engineering Faculty of Science and TechnologyUniversity of the Basque CountryP.O.Box 64448080 BilbaoSpain

The 3A zeolites are excellent adsorbents for industrial-scale gas dehydration because of the low energy required for regeneration and ease of operation.A computational study of the dehydration of an industrial feed stream containing ethane and water was performed using an in-house code that included an appropriate equilibrium adsorption *** validated computational model was used to examine the impact of particle size on the process dynamics and the corresponding pressure *** water concentration along the adsorption column was also *** increase the process capacity,the packed adsorption bed was divided into two distinct layers,which were operated with different particle *** length of each layer was determined by a parametric *** best breakthrough time,i.e.,107,800 s,at the allowed pressure drop was obtained when the lengths of the first and second layers were 4.5 and 1 m,*** results showed that the new two-layer adsorption bed could save around 33.8%in total energy requirement in comparison to that of a single bed.

关键词： Molecular sieve Breakthrough Adsorption Ethane dehydration Mathematical model

Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf) Ternary Diagram: An Excellent Tool for Discriminating Barren and Ta-Hosting Granite-Pegmatite Systems

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Journal of Earth Science 2020年第3期31卷 551-558页

作者： Maryam Mohamadizadeh seyed hossein Mojtahedzadeh Farimah Ayati Mining and Metallurgical Engineering Department Yazd UniversityYazd 98195-741Iran Department of Geology Payame Noor University19395-4697 TehranIran

Discriminating barren and fertile intrusions is one of the main challenges in the search for rare-element *** comprising more than one element can make discrimination of productive and barren samples more *** diagrams distinguish samples by simultaneous means of positive and/or negative correlations between variables.A ternary diagram for S-type peraluminous granites has been obtained in this ***,a database composed of Ta-bearing and barren granitic systems was created,then geochemical behavior of trace elements was studied,and statistical investigations were done using GCDkit software,which resulted in the Ga-(Nb+Ta)-(Nb/Ta)(Zr/Hf)ternary diagram which can distinguish the non-mineralized granites from productive *** Ta-bearing samples,which are situated in the fertile field in the diagram,are those which have high Nb and Ta contents,elevated Ga content and the lowest Nb/Ta and Zr/Hf values.

关键词： tantalum mineralization S-type peraluminous granite discrimination of fertile and barren granites whole-rock geochemistry indicators

An Efficient Lightweight Authentication and Key Agreement Protocol for Patient Privacy

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Computers, Materials & Continua 2021年第12期69卷 3495-3512页

作者： seyed Amin hosseini Seno Mahdi Nikooghadam Rahmat Budiarto Department of Computer Engineering Ferdowsi University of MashhadMashhad***Iran Department of Informatics Faculty of Science and TechnologyUniversitas Alazhar IndonesiaJakarta12110Indonesia

Tele-medical information system provides an efficient and convenient way to connect patients at home with medical personnel in clinical *** this system,service providers consider user authentication as a critical *** address this crucial requirement,various types of validation and key agreement protocols have been *** main problem with the two-way authentication of patients and medical servers is not built with thorough and comprehensive analysis that makes the protocol design yet has *** paper analyzes carefully all aspects of security requirements including the perfect forward secrecy in order to develop an efficient and robust lightweight authentication and key agreement *** secureness of the proposed protocol undergoes an informal analysis,whose findings show that different security features are provided,including perfect forward secrecy and a resistance to DoS ***,it is simulated and formally analyzed using Scyther *** results indicate the protocol’s robustness,both in perfect forward security and against various *** addition,the proposed protocol was compared with those of other related protocols in term of time complexity and communication *** time complexity of the proposed protocol only involves time of performing a hash function Th,i.e.,:O(12Th).Average time required for executing the authentication is 0.006 seconds;with number of bit exchange is 704,both values are the lowest among the other *** results of the comparison point to a superior performance by the proposed protocol.

关键词： Authentication key agreement protocol tele-medical Scyther perfect forward secrecy