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Seismic vulnerability assessment of urban buildings using the rough set theory and weighted linear combination

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Journal of Mountain Science 2022年第3期19卷 849-861页

作者： yasaman asadi Najmeh NEYSANI SAMANY Majid KIAVARZ MOQADAM Ata ABDOLLAHI KAKROODI Meysam ARGANY Department of Remote Sensing and GIS Faculty of GeographyUniversity TehranTehran 33137-67464Iran

Seismic vulnerability assessment of urban buildings is among the most crucial procedures to post-disaster response and recovery of infrastructure *** present study proceeds to estimate the seismic vulnerability of urban buildings and proposes a new framework training on the two ***,a comprehensive interpretation of the effective parameters of this phenomenon including physical and human factors is ***,the Rough Set theory is used to reduce the integration uncertainties,as there are numerous quantitative and qualitative *** objectives were conducted on seven distinct earthquake scenarios with different intensities based on distance from the fault line and the *** proposed method was implemented by measuring seismic vulnerability for the seven specified seismic *** final results indicated that among the entire studied buildings,71.5%were highly vulnerable as concerning the highest earthquake scenario(intensity=7 MM and acceleration calculated based on the epicenter),while in the lowest earthquake scenario(intensity=5 MM),the percentage of vulnerable buildings decreased to approximately 57%.Also,the findings proved that the distance from the fault line rather than the earthquake center(epicenter)has a significant effect on the seismic vulnerability of urban *** model was evaluated by comparing the results with the weighted linear combination(WLC)*** accuracy of the proposed model was substantiated according to evaluation *** assessment based on the distance from the epicenter and its comparison with the distance from the fault shows significant reliable results.

关键词： Seismic vulnerability Urban buildings Rough set theory Earthquake scenarios WLC

Cell biomechanics and its applications in human disease diagnosis

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Acta Mechanica Sinica 2015年第2期31卷 268-273页

作者： yasaman Nematbakhsh Chwee Teck Lim NUS Graduate School for Integrative Sciences and Engineering Department of Biomedical Engineering National University of Singapore Department of Mechanical Engineering National University of Singapore Mechanobiology Institute National University of Singapore

Certain diseases are known to cause changes in the physical and biomechanical properties of *** include cancer,malaria,and sickle cell anemia among ***,such physical property changes can result in several fold increases or decreases in cell stiffness,which are significant and can result in severe pathology and eventual catastrophic breakdown of the bodily *** there are developed biochemical and biological assays to detect the onset or presence of diseases,there is always a need to develop more rapid,precise,and sensitive methods to detect and diagnose *** property changes can play a significant role in this *** such,research into disease biomechanics can not only give us an in-depth knowledge of the mechanisms underlying disease progression,but can also serve as a powerful tool for detection and *** article provides some insights into opportunities for how significant changes in cellular mechanical properties during onset or progression of a disease can be utilized as useful means for detection and *** will also showcase several technologies that have already been developed to perform such detection and diagnosis.

关键词： Biophysical properties Cancer Malaria Cell enrichment Phenotyping Diagnostic tool Mechanopathology Cell separation and capture

Seismic assessment of nature-inspired hexagrid lateral load-resisting system

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Earthquake Engineering and Engineering Vibration 2021年第3期20卷 661-672页

作者： yasaman Memarzadeh Kiani Seyed Hossein Hosseini Lavassani Afshin Meshkat-Dini Department of Civil Engineering Faculty of EngineeringKharazmi UniversityTehranIran

This paper provides a general perspective of the seismic performance of a nature-inspired,honey-comb grid structural system,known as a hexagrid,under near-field ground *** performance of this skeleton is then compared to that of a bundled-tube,as a conventional and efficient load-resisting system in order to provide a better perception of the seismic behavior of a hexagrid *** 20-story buildings with bundled-tube and hexagrid skeleton were *** behavior of the structures was investigated through 3-D finite element computer models and nonlinear time history analyses by subjecting the models to seven three-component records of scaled near-field ground *** of peak inter story drift and corner beam-column joint rotations were calculated and *** indicated that by replacing the exterior columns of the bundled-tube system with inclined beam-column elements of nature-inspired hexagons,lateral stiffness of the building increased and it would tolerate less deformations before global dynamic instability is *** presence of inclined columns in the hexagrid skeleton helped to concentrate local nonlinearities in ring beams rather than exterior columns.

关键词： high-rise steel structure hexagrid structure performance assessment nonlinear seismic analysis

Using neural network modeling to improve the detection accuracy of land subsidence due to groundwater withdrawal

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Journal of Mountain Science 2024年第7期21卷 2320-2333页

作者： Ali M.RAJABI Ali EDALAT yasaman ABOLGHASEMI Mahdi KHODAPARAST Department of Engineering Geology University of TehranTehran ***Iran Department of Civil Engineering University of QomQom ***Iran

Despite the high efficiency of remote sensing methods for rapid and large-scale detection of subsidence phenomena,this technique has limitations such as atmospheric impact and temporal and spatial decorrelation that affect the accuracy of the *** paper proposes a method based on an artificial neural network to improve the results of monitoring land subsidence due to groundwater overexploitation by radar interferometry in the Aliabad plain(Central Iran).In this regard,vertical ground deformations were monitored over 18 months using the Sentinel-1A SAR *** model the land subsidence by a multilayer perceptron(MLP)artificial neural network,four parameters,including groundwater level,alluvial thickness,elastic modulus,and transmissivity have been *** model's generalizability was assessed using data derived for 144 *** to the results,the neural network estimates the land subsidence at each ground point with an accuracy of 6.8 mm.A comparison between the predicted and actual values indicated a significant *** MLP model can be used to improve the results of subsidence detection in the study area or other areas with similar characteristics.

关键词： DInSAR Land subsidence Groundwater withdrawal Aliabad plain Artificial neural network

GLOBAL DYNAMICS OF A DIFFERENTIAL SUSCEPTIBILITY MODEL

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International Journal of Biomathematics 2012年第5期5卷 219-238页

作者： M. R. RAZVAN S. yasaman Sharif University of TechnologyDepartment of Mathematical SciencesP. O. Box 11155-9315 Tehran Iran School of MathematicsInstitute for Research in Fundamental Sciences ( IPM) P. O. Box 19395-5746 Tehran Iran

An SIS epidemiological model in a population of varying size with two dissimilar groups of susceptible individuals has been analyzed. We prove that all the solutions tend to the equilibria of the system. Then we use the Poincar~ Index theorem to determine the number of the rest points and their stability properties. It has been shown that bistability occurs for suitable values of the involved parameters. We use the perturbations of the pitchfork bifurcation points to give examples of all possible dynamics of the system. Some numerical examples of bistability and hysteresis behavior of the systeIn has been also provided.

关键词： Epidemiological model differential susceptibility disease-free equilibrium endemic equilibrium Poincar~ index bifurcation.

Phase-sensitive plasmonic biosensor using a portable and large field-of-view interferometric microarray imager

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Light(Science & Applications) 2017年第1期6卷 159-167页

作者： Filiz Yesilkoy Roland A Terborg Josselin Pello Alexander A Belushkin yasaman Jahani Valerio Pruneri Hatice Altug Institute of BioEngineering École Polytechnique Fédérale de LausanneCH-1015 LausanneSwitzerland ICFO-Institut de Ciències Fotòniques The Barcelona Institute of Science and Technology08860 Castelldefels(Barcelona)Spain ICREA-InstitucióCatalana de Recerca i Estudis Avançats 08010 BarcelonaSpain

Nanophotonics,and more specifically plasmonics,provides a rich toolbox for biomolecular sensing,since the engineered metasurfaces can enhance light–matter interactions to unprecedented *** far,biosensing associated with high-quality factor plasmonic resonances has almost exclusively relied on detection of spectral shifts and their associated intensity ***,the phase response of the plasmonic resonances have rarely been exploited,mainly because this requires a more sophisticated optical *** we present a new phase-sensitive platform for high-throughput and label-free biosensing enhanced by *** employs specifically designed Au nanohole arrays and a large field-of-view interferometric lens-free imaging reader operating in a collinear optical path *** unique combination allows the detection of atomically thin(angstrom-level)topographical features over large areas,enabling simultaneous reading of thousands of microarray *** the plasmonic chips are fabricated using scalable techniques and the imaging reader is built with low-cost off-the-shelf consumer electronic and optical components,the proposed platform is ideal for point-of-care ultrasensitive biomarker detection from small sample *** research opens new horizons for on-site disease diagnostics and remote health monitoring.

关键词： interferometric imaging label-free plasmonic biosensors lens-free imaging phase interrogation point-of-care devices protein microarray detection

Synthesis of Single-Walled Carbon Nanotubes by Induction Thermal Plasma

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Nano Research 2009年第10期2卷 800-817页

作者： Keun Su Kim Ala Moradian Javad Mostaghimi yasaman Alinejad Ali Shahverdi Benoit Simard Gervais Soucy Department of Chemical Engineering Universitéde SherbrookeJ1K 2R1Canada Department of Mechanical and Industrial Engineering University of TorontoM5S 3G8Canada Steacie Institute for Molecular Sciences National Research CouncilK1A 0R6Canada

The production of high quality single-walled carbon nanotubes(SWCNTs)on a bulk scale has been an issue of considerable ***,it has been demonstrated that high quality SWCNTs can be continuously synthesized on large scale by using induction thermal plasma *** this process,the high energy density of the thermal plasma is employed to generate dense vapor-phase precursors for the synthesis of *** the current reactor system,a carbon soot product which contains approximately 40 wt%of SWCNTs can be continuously synthesized at the high production rate of~100 g/*** this article,our recent research efforts to achieve major advances in this technology are ***,the processing parameters involved are examined systematically in order to evaluate their individual inuences on the SWCNT synthesis.Based on these results,the appropriate operating conditions of the induction thermal plasma process for an effective synthesis of SWCNTs are discussed.A characterization study has also been performed on the SWCNTs produced under the optimum processing ***,a mathematical model of the process currently under development is *** model will help us to better understand the synthesis of SWCNTs in the induction plasma process.

关键词： Single-walled carbon nanotubes(SWCNTs) large-scale continuous synthesis radio frequency(RF)induction thermal plasma optimization numerical modeling

Novel microsatellite markers suggest the mechanism of parthenogenesis in Extatosoma tiaratum is automixis with terminal fusion

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Insect Science 2018年第1期25卷 24-32页

作者： yasaman Alavi Anthony van Rooyen Mark Adrian Elgar Theresa Melanie Jones Andrew Raymond Weeks1 School of BioSciences University of Melbourne Victoria Australia Cesar Pty Ltd 293 Royal Parade Parkville Victoria Australia

Parthenogenetic reproduction is taxonomically widespread and occurs through various cytological mechanisms, which have different impact on the genetic variation of the offspring. Extatosoma tiaratum is a facultatively parthenogenetic Australian insect （Phasmatodea）, in which females oviposit continuously throughout their adult lifespan irre- spective of mating. Fertilized eggs produce sons and daughters through sexual reproduction and unfertilized eggs produce female offspring via parthenogenesis. Here, we developed novel microsatellite markers for E. tiaratum and characterized them by genotyping indi- viduals from a natural population. We then used the microsatellite markers to infer the cytological mechanism of parthenogenesis in this species. We found evidence suggesting parthenogenesis in E. tiaratum occurs through automixis with terminal fusion, resulting in substantial loss of microsatellite heterozygosity in the offspring. Loss of microsatel- lite heterozygosity may be associated with loss of heterozygosity in fitness related loci. The mechanism of parthenogenetic reproduction can therefore affect fitness outcomes and needs to be considered when comparing costs and benefits of sex versus parthenogenesis.

关键词： apomixis automixis Extatosoma tiaratum heterozygosity microsatellite markers parthenogenesis

Two-dimensional Parameter Relationships for W UMa-type Systems Revisited

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Research in Astronomy and Astrophysics 2024年第1期24卷 51-58页

作者： Atila Poro Ehsan Paki Ailar Alizadehsabegh Mehdi Khodadadilori Selda Ranjbar Salehian Mahya Hedayatjoo Fatemeh Hashemi yasaman Dashti Fatemeh Mohammadizadeh Astronomy Department of the Raderon AI Lab. BurnabyBCCanada Faculty of Electrical and Computer Engineering Department of PhotonicsUniversity of TabrizTabriz 51664Iran Department of Electrical Engineering Amirkabir University of TechnologyTehranIran Astronomy Students'Scientific Association University of TabrizTabriz 51664Iran Department of Physics Iran University of Science and TechnologyTehranIran Institute for the Intellectual Development(Kanoon) Astronomy GroupBojnordIran Department of Mechanical Engineering Amirkabir University of TechnologyTehranIran Aerospace Engineering Department Science and Research Branch of Islamic Azad UniversityTehranIran

Reviewing the empirical and theoretical parameter relationships between various parameters is a good way to understand more about contact binary *** this investigation,two-dimensional(2D)relationships for P–MV(system),P–L1,2,M1,2–L1,2,and q–Lratiowere *** sample used is related to 118 contact binary systems with an orbital period shorter than 0.6 days whose absolute parameters were estimated based on the Gaia Data Release 3 *** reviewed previous studies on 2D relationships and updated six parameter ***,Markov chain Monte Carlo and Machine Learning methods were used,and the outcomes were *** selected 22 contact binary systems from eight previous studies for comparison,which had light curve solutions using spectroscopic *** results show that the systems are in good agreement with the results of this study.

关键词： (stars:)binaries(including multiple):close stars:fundamental parameters methods:data analysis