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| 1 | Mixed-effects modeling for tree height prediction models of Oriental beech in the Hyrcanian forests显示文摘Height–diameter relationships are essential elements of forest assessment and modeling efforts.In this work,two linear and eighteen nonlinear height–diameter equations were evaluated to find a local model for Oriental beech(Fagus orientalis Lipsky) in the Hyrcanian Forest in Iran.The predictive performance of these models was first assessed by different evaluation criteria: adjusted R^2(R^2_(adj)),root mean square error(RMSE),relative RMSE(%RMSE),bias,and relative bias(%bias) criteria.The best model was selected for use as the base mixed-effects model.Random parameters for test plots were estimated with different tree selection options.Results show that the Chapman–Richards model had better predictive ability in terms of adj R^2(0.81),RMSE(3.7 m),%RMSE(12.9),bias(0.8),%Bias(2.79) than the other models.Furthermore,the calibration response,based on a selection of four trees from the sample plots,resulted in a reduction percentage for bias and RMSE of about 1.6–2.7%.Our results indicate that the calibrated model produced the most accurate results. | Siavash Kalbi Asghar Fallah Pete Bettinger Shaban Shataee Rassoul Yousefpour | 2018 | Journal of Forestry Research2018，29，5： | 6 |
| 2 | Fabrication and characterization of GNPs and CNTs reinforced Al7075 matrix composites through the stir casting process显示文摘This study investigated the effects of adding graphene nanoplates(GNPs)and carbon nanotubes(CNTs)into the Al7075 matrix via the stir casting method on the microstructure and mechanical properties of the fabricated composites.By increasing the volume fraction of rein-forcements,the fraction of porosity increased.The X-ray diffraction results showed that the addition of reinforcements into the Al7075 changed the dominant crystal orientation from(002)to(111).Field emission scanning electron microscopy images also showed the distribution of clustered reinforcements in the matrix.Between the two reinforcements,the addition of CNTs generated a lower fraction of porosities.Through the addition of 0.52vol%GNPs into the matrix,the hardness,ultimate tensile strength and uniform elongation increased by 44%,32%,and 180%,respectively.Meanwhile,the presence of 0.71vol%CNTs in the matrix increased the hardness,tensile strength and uniform elongation by 108%,129%,and 260%,respectively. | Siavash Imanian Ghazanlou Beitallah Eghbali | 2021 | International Journal of Minerals,Metallurgy and Materials2021，28，7： | 4 |
| 3 | Experimental Investigation of the Effects of Various Plasma Actuator Configurations on Lift and Drag Coefficients of a Circular Cylinder Including the Effects of Electrodes显示文摘In this paper, the effects of the existence of plasma actuator electrodes and also various configurations of the actuator for controlling the flow field around a circular cylinder are experimentally investigated. The cylinder is made of PVC (Polyvinyl Chloride) and considered as a dielectric barrier. Two electrodes are flush-mounted on the surface of the cylinder and are connected to a DC high voltage power supply for generation of electrical discharge. Pressure distribution results show that the existence of the electrodes and also the plasma are able to change the pressure distribution around the cylinder and consequently the lift and drag coefficients. It is found that the effect of the existence of the electrodes is comparable with the effect of plasma actuator in controlling the flow field around the cylinder and this effect is not reported by other researchers. Eventually it is concluded that the existence of the electrodes or any extra objects on the cylinder and also the existence of the plasma are capable of changing the flow field structure around the cylinder so that the behavior of the lift and drag coefficients of the cylinder will be changed significantly. | Siavash TABATABAEIAN Masoud MIRZAEI Asghar SADIGHZADEH Vahid DAMIDEH Abdollah SHADARAM | 2012 | Chinese Journal of Aeronautics2012，25，3： | 4 |
| 4 | EBSD表征变形后退火Al7075/石墨烯纳米片/碳纳米管复合材料显示文摘研究变形后退火对碳纳米管(CNTs)和石墨烯纳米片(GNPs)增强热轧Al7075基复合材料显微组织演变的影响。对搅拌铸造样品进行多道次热轧,然后在450℃下退火4 h。采用SEM、EDS和EBSD技术观察材料的显微组织演变。EBSD数据显示,添加体积分数(下同)为0.87%的GNPs和CNTs可明显抑制再结晶的发生。当添加0.96%的CNTs时,再结晶受到部分抑制。而当添加0.92%的GNPs时,明显加快了粒子激发形核(PSN)机制导致的再结晶。在有增强相存在的情况下,再结晶晶粒的体积分数与PSN的产生有显著的关系。主要织构的强度和类型都取决于增强相的种类。 | Siavash IMANIAN GHAZANLOU Baitallah EGHBALI Roumen PETROV | 2021 | Transactions of Nonferrous Metals Society of China2021，31，8： | 4 |
| 5 | Hybrid classifier for fault location in active distribution networks显示文摘This paper presents a fast hybrid fault location method for active distribution networks with distributed generation(DG)and microgrids.The method uses the voltage and current data from the measurement points at the main substation,and the connection points of DG and microgrids.The data is used in a single feedforward artificial neural network(ANN)to estimate the distances to fault from all the measuring points.A k-nearest neighbors(KNN)classifier then interprets the ANN outputs and estimates a single fault location.Simulation results validate the accuracy of the fault location method under different fault conditions including fault types,fault points,and fault resistances.The performance is also validated for non-synchronized measurements and measurement errors. | Sadegh Jamali Alireza Bahmanyar Siavash Ranjbar | 2020 | Protection and Control of Modern Power Systems2020，5，1： | 3 |
| 6 | MXene‑Graphene Composites:A Perspective on Biomedical Potentials显示文摘MXenes,transition metal carbides and nitrides with graphene-like structures,have received considerable attention since their first discovery.On the other hand,Graphene has been extensively used in biomedical and medicinal applications.MXene and graphene,both as promising candidates of two-dimensional materials,have shown to possess high potential in future biomedical applications due to their unique physicochemical properties such as superior electrical conductivity,high biocompatibility,large surface area,optical and magnetic features,and extraordinary thermal and mechanical properties.These special structural,functional,and biological characteristics suggest that the hybrid/composite structure of MXene and graphene would be able to meet many unmet needs in different fields;particularly in medicine and biomedical engineering,where high-performance mechanical,electrical,thermal,magnetic,and optical requirements are necessary.However,the hybridization and surface functionalization should be further explored to obtain biocompatible composites/platforms with unique physicochemical properties,high stability,and multifunctionality.In addition,toxicological and long-term biosafety assessments and clinical translation evaluations should be given high priority in research.Although very limited studies have revealed the excellent potentials of MXene/graphene in biomedicine,the next steps should be toward the extensive research and detailed analysis in optimizing the properties and improving their functionality with a clinical and industrial outlook.Herein,different synthesis/fabrication methods and performances of MXene/graphene composites are discussed for potential biomedical applications.The potential toxicological effects of these composites on human cells and tissues are also covered,and future perspectives toward more successful translational applications are presented.The current state-of-the-art biotechnological advances in the use of MXene-Graphene composites,as well as their developmental challenges and future prospects are also deliberated.Due to the superior properties and multifunctionality of MXene-graphene composites,these hybrid structures can open up considerable new horizons in future of healthcare and medicine. | Ebrahim Mostafavi Siavash Iravani | 2022 | Nano-Micro Letters2022，14，8： | 3 |
| 7 | Response of a 2-story test-bed structure for the seismic evaluation of nonstructural systems显示文摘A full-scale,two-story,two-by-one bay,steel braced-frame was subjected to a number of unidirectional ground motions using three shake tables at the UNR-NEES site.The test-bed frame was designed to study the seismic performance of nonstructural systems including steel-framed gypsum partition walls,suspended ceilings and fire sprinkler systems.The frame can be configured to perform as an elastic or inelastic system to generate large floor accelerations or large inter story drift,respectively.In this study,the dynamic performance of the linear and nonlinear test-beds was comprehensively studied.The seismic performance of nonstructural systems installed in the linear and nonlinear test-beds were assessed during extreme excitations.In addition,the dynamic interactions of the test-bed and installed nonstructural systems are investigated. | Siavash Soroushian E. “Manos” Maragakis Arash E. Zaghi Esmaeel Rahmanishamsi Ahmad M. Itani Gokhan Pekcan | 2016 | Earthquake Engineering and Engineering Vibration2016，15，1： | 3 |
| 8 | Feasibility of using electrokinetics and nanomaterials to stabilize and improve collapsible soils显示文摘Loess as a subcategory of collapsible soils is a well-known aeolian deposit generally characterized as a highly-porous medium with relatively low natural density and water content and a high percentage of fine-grained particles.Such collapsible soil sustains large stresses under a dry condition with natural water content.However,it can experience high and relatively sudden decreases in its volume once it reaches a certain water content under a certain load and therefore,the natural condition of the soil might not be suitable for construction if the possibility of the exposure of the soil to excessive water exists during the lifetime of the project.This research presents the utilization of an innovative method for stabilization and improvement of Gorgan loessial soil.This method uses electrokinetics and nanomaterials to instigate additives to move through soil pores,as an in situ remedial measure.To assess the acceptability of this measure,the deformability and strength characteristics of the improved collapsible soil are measured and compared with those of the unimproved soil,implementing several unsaturated oedometer tests under constant vertical stress and varying matric suction.The result emphasizes the importance of the matric suction on the behavior of both improved and unimproved soils.The test results indicate that the resistance of the soil was highly dependent on the water content and matric suction of the soil.The oedometer tests on samples improved by 3%lime and 5%nanomaterials show considerable improvement of the collapse potential.Results also reveal that stabilized samples experience notably lower volume decrease under the same applied stresses. | Arash Hosseini S.Mohsen Haeri Siavash Mahvelati Aria Fathi | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，5： | 3 |
| 9 | Image registration using Log-Polar mappings for recovery of largescale similarity and projective transfOrmations显示文摘 | Zokai Siavash Wolberg George | 2005 | IEEE Transactions on Image Pprocessing2005，，10： | 1 |
| 10 | A Simple Transmit Diversity Technique for Wireless Communications显示文摘 | Siavash M Alamouti | 1998 | IEEE Journal on Selected Areas in Communications1998，16，10： | 1 |
| 11 | A Simple Transmit Diversity Technique for Wireless Communications显示文摘 | Siavash M Alamouti | 1998 | IEEE Transactions on Communications1998，16，8： | 1 |
| 12 | Selenium Deficiency as a Possible Contributor of Goiter in Schoolchildren of Isfahan, Iran显示文摘 | Ammar H. Keshteli Mahin Hashemipour Mansour Siavash Masoud Amini | 2009 | Biological Trace Element Research (-)2009，，1： | 1 |
| 13 | Determinants of Smart School System Success: A Case Study of Malaysia显示文摘 | Siavash O Maslin M Harihoddin S | 2012 | Intemational Journal of Academic Research2012，，1： | 1 |
| 14 | A Simple Transmit Diversity Technique for Wireless Communication显示文摘 | Alamouti Siavash M | 1998 | IEEE J Select Areas Commun1998，16，： | 1 |
| 15 | Iron deficiency in goitrous schoo!children of Semirom, Iran 显示文摘 | Siavash Dastjerdi M Hashemipour M Rezvanian H | 2006 | Hornl Res2006，66，1： | 1 |
| 16 | A simple transmit diversity technique for wireless communications显示文摘 | SIAVASH M ALAMOUTI | 1998 | IEEE J Select Areas Commun1998，16，8： | 1 |
| 17 | Design and construction of a harvesting safflower petals machine 显示文摘 | Siavash Azimi Gholamreza Chegini Mohamad Hosein Kian- mehr | 2012 | Iranian journal of Range and Desert Re- seach2012，14，2： | 1 |
| 18 | Spectrophotometric resolution of ternary mixtures of pseudoephedrine hydrechloride, dextromethorphan hydrobromide, and sodium benzoate in syrups using wavelength selection by net analyte signals calculated with hybrid linear analysis 显示文摘 | Mohsen K Z Siavash M | 2004 | Analytica Chimica Acta2004，526，1： | 1 |
| 19 | Vitamin C may have similar beneficial effects to Gemfibrozil on serum high- density lipoprotein-cholesterol in type 2 diabetic patients显示文摘 | Siavash M Amini M | 2014 | J Res Pharm Pract2014，3，3： | 1 |
| 20 | A simple transmit diversity technique for wireless communications显示文摘 | Siavash M Alamouti | | IEEE journal on select areas in communications0，16，： | 1 |
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