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您的检索式：作者名="Ahmad MAHMOUDI"
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| 1 | Image quality assessment using the singular value decomposition theorem显示文摘 | Azadeh Mansouri Ahmad Mahmoudi Aznaveh Farah Torkamani-Azar | 2009 | Optical Review2009，16，2： | 1 |
| 2 | Plague reservoir species throughout the world显示文摘Plague has been known since ancient times as a re-emerging infectious disease,causing considerable socioeconomic burden in regional hotspots.To better understand the epidemiological cycle of the causative agent of the plague,its potential occurrence,and possible future dispersion,one must carefully consider the taxonomy,distribution,and ecological requirements of reservoir-species in relation either to natural or human-driven changes(e.g.climate change or urbanization).In recent years,the depth of knowledge on species taxonomy and species composition in different landscapes has undergone a dramatic expansion,driven by modern taxonomic methods such as synthetic surveys that take into consideration morphology,genetics,and the ecological setting of captured animals to establish their species identities.Here,we consider the recent taxonomic changes of the rodent species in known plague reservoirs and detail their distribution across the world,with a particular focus on those rodents considered to be keystone host species.A complete checklist of all known plague-infectable vertebrates living in plague foci is provided as a Supporting Information table. | Ahmad MAHMOUDI Boris KRYŠTUFEK Alexander SLUDSKY Boris V.SCHMID Alzira M.P.DE ALMEIDA Xu LEI Beza RAMASINDRAZANA Eric BERTHERAT Aidyn YESZHANOV Nils ChrSTENSETH Ehsan MOSTAFAVI | 2021 | Integrative Zoology2021，16，6： | 0 |
| 3 | The Arcsine-X Family of Distributions with Applications to Financial Sciences显示文摘The heavy-tailed distributions are very useful and play a major role in actuary and financial management problems.Actuaries are often searching for such distributions to provide the best fit to financial and economic data sets.In the current study,a prominent method to generate new distributions useful for modeling heavy-tailed data is considered.The proposed family is introduced using trigonometric function and can be named as the Arcsine-X family of distri-butions.For the purposes of the demonstration,a specific sub-model of the proposed family,called the Arcsine-Weibull distribution is considered.The max-imum likelihood estimation method is adopted for estimating the parameters of the Arcsine-X distributions.The resultant estimators are evaluated in a detailed Monte Carlo simulation study.To illustrate the Arcsine-Weibull two insurance data sets are analyzed.Comparison of the Arcsine-Weibull model is done with the well-known two parameters and four parameters competitors.The competitive models including the Weibull,Lomax,Burr-XII and beta Weibull models.Different goodness of fit measures are taken into account to determine the useful-ness of the Arcsine-Weibull and other considered models.Data analysis shows that the Arcsine-Weibull distribution works much better than competing models in financial data analysis. | Yen Liang Tung Zubair Ahmad Eisa Mahmoudi | 2021 | Computer Systems Science & Engineering2021，39，12： | 0 |
| 4 | 采用CFD得到的横摇阻尼的船舶横摇分析:数值和实验研究显示文摘This study investigates the roll decay of a fishing vessel by experiments and computational fluid dynamics(CFD)simulations.A fishing vessel roll decay is tested experimentally for different initial roll angles.The roll decay is also simulated numerically by CFD simulations and is validated against the experimental results.It shows that the roll damping could be obtained by CFD with high level of accuracy.The linear and nonlinear damping terms are extracted from the CFD roll decay results and are used in a potential-based solver.In this way we are using a hybrid solver that benefits the accuracy of the CFD results in terms of roll damping estimation and the fast computations of the potential-based solver at the same time.This hybrid method is used for reproducing the free roll decays at Fn=0 and also in analyzing some cases in waves.The experiments,CFD and the hybrid parts are described in detail.It is shown that the suggested method is capable of doing the simulations in a very short time with high level of accuracy.This strategy could be used for many seakeeping analyses. | Isar Ghamari Hamid Reza Mahmoudi Ahmad Hajivand Mohammad Saeed Seif | 2022 | Journal of Marine Science and Application2022，21，1： | 0 |
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