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| 1 | 一种PWM整流器直接功率控制方法(英文)显示文摘PWM 整流器的直接功率控制方法因具有简单实用、抗干扰能力强、良好的动态性能、可以实现有功无功的解耦控制的特性而被广泛应用。基于传统的 V-DPC(voltage direct power control)和 VF-DPC(virtual flux direct power control)控制方案,提出了一种新的控制方案。新控制方案减轻了电网电压不理想条件下(电网电压畸变或不平衡)产生的影响。PWM 调制器应用保证了恒定的开关频率。增加电网电压传感器使得利用低分辨率 ADC 转换器实现控制策略成为可能。通过引入电网电压的不平衡补偿模块和重构模块,改善了系统在电网电压不平衡或畸变条件下的性能。实验结果证实了这种方法的有效性。 | Hadian Amrei S R 徐殿国 郎永强 | 2007 | 中国电机工程学报2007，27，25： | 35 |
| 2 | Estimation of spatial and temporal changes in net primary production based on Carnegie Ames Stanford Approach(CASA) model in semi-arid rangelands of Semirom County, Iran显示文摘Net primary production(NPP) is an indicator of rangeland ecosystem function. This research assessed the potential of the Carnegie Ames Stanford Approach(CASA) model for estimating NPP and its spatial and temporal changes in semi-arid rangelands of Semirom County, Iran. Using CASA model, we estimated the NPP values based on monthly climate data and the normalized difference vegetation index(NDVI) obtained from the MODIS sensor. Regression analysis was then applied to compare the estimated production data with observed production data. The spatial and temporal changes in NPP and light utilization efficiency(LUE) were investigated in different rangeland vegetation types. The standardized precipitation index(SPI) was also calculated at different time scales and the correlation of SPI with NPP changes was determined. The results indicated that the estimated NPP values varied from 0.00 to 74.48 g C/(m^2·a). The observed and estimated NPP values had different correlations, depending on rangeland conditions and vegetation types. The highest and lowest correlations were respectively observed in Astragalus spp.-Agropyron spp. rangeland(R^2=0.75) with good condition and Gundelia spp.-Cousinia spp. rangeland(R^2=0.36) with poor and very poor conditions. The maximum and minimum LUE values were found in Astragalus spp.-Agropyron spp. rangeland(0.117 g C/MJ) with good condition and annual grassesannual forbs rangeland(0.010 g C/MJ), respectively. According to the correlations between SPI and NPP changes, the effects of drought periods on NPP depended on vegetation types and rangeland conditions. Annual plants had the highest drought sensitivity while shrubs exhibited the lowest drought sensitivity. The positive effects of wet periods on NPP were less evident in degraded areas where the destructive effects of drought were more prominent. Therefore, determining vegetation types and rangeland conditions is essential in NPP estimation. The findings of this study confirmed the potential of the CASA for estimating rangeland production. Therefore, the model output maps can be used to evaluate, monitor and optimize rangeland management in semi-arid rangelands of Iran where MODIS NPP products are not available. | Fatemeh HADIAN Reza JAFARI Hossein BASHARI Mostafa TARTESH Kenneth DCLARKE | 2019 | Journal of Arid Land2019，11，4： | 7 |
| 3 | CO_2 reforming of methane over nickel catalysts supported on nanocrystalline MgAl_2O_4 with high surface area显示文摘In this paper dry reforming of methane (DRM) was carried out over nanocrystalline MgAl2O4-supported Ni catalysts with various Ni loadings. Nanocrystalline MgAl2O4 spinel with high specific surface area was synthesized by a co-precipitation method with the addition of pluronic P123 triblock copolymer as surfactant, and employed as catalyst support. The prepared samples were characterized by X-ray diffraction (XRD), N2 adsorption, H2 chemisorption, temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), temperature- programmed desorption (TPD) and transmission and scanning electron microscopies (TEM, SEM) techniques. The obtained results showed that the catalyst support has a nanocrystalline structure (crystal size: about 5 nm) with a high specific surface area (175 m2 g-1) and a mesoporous structure. Increasing in nickel content decreased the specific surface area and nickel dispersion. The prepared catalysts showed high catalytic activity and stability during the reaction. SEM analysis revealed that whisker type carbon deposited over the spent catalysts and increasing in nickel loading increased the amount of deposited carbon. The nickel catalyst with 7 wt% of nickel showed the highest catalytic activity. | Narges Hadian Mehran Rezaei Zeinab Mosayebi Fereshteh Meshkani | 2012 | Journal of Natural Gas Chemistry2012，21，2： | 6 |
| 4 | Microstructural Evaluation of 410 SS/Cu Diffusion-Bonded Joint显示文摘In the present study, a grade of stainless steel (SS, 410) and copper plates were joined through diffusion bonding by using a nickel interlayer at temperature range of 800-950℃. These were performed through pressing the specimens under a pressure of 12 MPa for 60 min under 1.33×10 -2 Pa (10-4 torr) vacuum. The microstructure and phase constitution near the diffusion bonding interface of Cu/Ni and Ni/SS were studied by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and an elemental analyses through energy dispersive spectrometry (EDS). The results indicated that an obvious diffusion zone was formed near both Cu/Ni and Ni/SS interfaces during the vacuum diffusion bonding. The thickness of reaction layer in both interfaces was increased with increasing process temperature. The diffusion transition region near the Cu/Ni and Ni/SS interfaces consist of complete solid solution zone and various phases based on (Fe, Ni), (Fe, Cr, Ni) and (Fe, Cr), respectively. From EDS results, three different mixtures of phases were distinguished in SS-Ni interface. The activation energy and rate constant were determined for the growth of these reaction layers and the values become maximum for the {γFe, Ni+αFe+Cr} phase mixture. | H. Sabetghadam A. Zarei Hanzaki A. Araee A. Hadian | 2010 | Journal of Materials Science & Technology2010，26，2： | 6 |
| 5 | 一种新颖的多电平矩阵变换器的建模与仿真显示文摘在传统矩阵变换器和多电平逆变器的基础上,提出一种新颖的多电平矩阵变换器,介绍了其拓扑结构和工作原理.多电平矩阵变换器的能量传递,是通过三相输入电压对中点电容充电到一个恒定直流电压而实现的.选择适当的控制算法和电容电压,能在变换器的两侧合成低次谐波含量小且波形近似于正弦的可控输入/输出电压.对多电平矩阵变换器进行建模和仿真,并探讨了其输出能控性. | 张华强 王新生 王立国 REZA Hadian 徐殿国 | 2004 | 控制与决策2004，19，10： | 5 |
| 6 | A novel and efficient multiparty quantum secret sharing scheme using entangled states显示文摘We proposed a novel and efficient multiparty quantum secret sharing scheme using entangled state which in that the number of parties can be arbitrary large.The state which we used,has special properties that make our scheme simple and safe.The operations which are needed to recover secret message,are only exclusive-or addition and complement operation.Moreover it is shown that this scheme is secure against eavesdropping.Also this scheme provides the best quantum bit efficiency compared with some famous quantum secret sharing schemes. | MASSOUD Hadian Dehkordi ELHAM Fattahi | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，10： | 4 |
| 7 | 一种大负载和变电压输入条件下大功率DC/DC变换器的新型控制策略(英文)显示文摘由于DC/DC开关变换器具有许多优良的特性,近年来得到了许多应用。基于变结构控制的滑模控制方式可被应用于各种开关变换器的控制,电流模式控制方式只是特定地应用于DC/DC变换器的控制。然而,在大负载电流和输入电压波动的情况下,这些控制方式的补偿能力明显不足。文章综合这两种控制策略提出了一种新的控制策略和获得动态参考电流的方法,并进行了仿真分析。结果证明,这种动态参考电流的获得方法能够减轻大负载电流和输入电压波动的影响。 | Seyed Reza Hadian Amrei 徐殿国 郭德胜 | 2006 | 电网技术2006，30，6： | 3 |
| 8 | A machine learning approach to model solute grain boundary segregation显示文摘Even minute amounts of one solute atom per one million bulk atoms may give rise to qualitative changes in the mechanical response and fracture resistance of modern structural materials.These changes are commonly related to enrichment by several orders of magnitude of the solutes at structural defects in the host lattice.The underlying concept—segregation—is thus fundamental in materials science.To include it in modern strategies of materials design,accurate and realistic computational modelling tools are necessary.However,the enormous number of defect configurations as well as sites solutes can occupy requires models which rely on severe approximations.In the present study we combine a high-throughput study containing more than 1 million data points with machine learning to derive a computationally highly efficient framework which opens the opportunity to model this important mechanism on a routine basis. | Liam Huber Raheleh Hadian Blazej Grabowski Jörg Neugebauer | 2018 | npj Computational Materials2018，，1： | 2 |
| 9 | Test-retest relia- bility of center of pressure measures of postural stability during quiet standing in a group with musculoskeletal disorders con- sisting of low back pain,anterior cruciate ligament injury and functional ankle instability显示文摘 | Salavati M Hadian MR Mazaheri M | 2009 | Gait Posture2009，29，3： | 1 |
| 10 | Short-term rapid atrial pacing produces electrical remodeling of sinus node function in humans显示文摘 | Hadian D Zipes DP Olgin JE | 2002 | J Cardiovasc Electrophysiol2002，13，6： | 1 |
| 11 | The effect of Li on the tensile properties of cast Al–Mg 2 Si metal matrix composite显示文摘 | R. Hadian M. Emamy N. Varahram N. Nemati | 2008 | Materials Science & Engineering A2008，，1： | 1 |
| 12 | Short-term rapid atrial pacing produces electrical remodeling of sinus nodefunction in humans显示文摘 | Hadian D Zipes DP Olgin JE | | 0，，06： | 1 |
| 13 | Hamstring flexibility in young women following passive stretch and muscle energy technique 显示文摘 | Shadmehr A Hadian MR Naiemi SS | 2009 | J Back Museuloskelet Rehabil2009，22，3： | 1 |
| 14 | Short-term rapid atrial pacing produces electrical remodeling of sinus node function in humans显示文摘 | Hadian D Zipes DP Olgin JE | 2002 | J Cardiovasc Electrophysiol2002，13，6： | 1 |
| 15 | Modification of Cast Al-Mg2Si Metal Matrix Composite by Li显示文摘 | R. Hadian M. Emamy J. Campbell | 2009 | Metallurgical and Materials Transactions B2009，，6： | 1 |
| 16 | Cross-comparison of car- diac output trending accuracy of LiDCO, PiCCO, FloTrac and pul- monary artery catheters显示文摘 | HADIAN M KIN H SEVERYN D | 2010 | Critical Care2010，14，11： | 1 |
| 17 | Residual stresses in electrodeposits of nickel and nickel - iron alloys 显示文摘 | Hadian S E Gabe D R | 1999 | Surface and Coatings Technology1999，122，： | 1 |
| 18 | Cost-effectiveness analysis of trastuzumab in the adjuvant treatment for early breast cancer 显示文摘 | Aboutorabi A Hadian M Ghaderi H | 2014 | Glob J Health Sci2014，7，1： | 1 |
| 19 | Residual stresses in electrodeposits of nickel and nickel-iron alloys显示文摘 | Hadian S E Gabe D R | 1999 | Surface and Coatings Technology1999，122，： | 1 |
| 20 | The let-7 tar-get gene mouse lin-41 is a stem cell specific E3 ubiq-uitin ligase for the miRNA pathway protein Ago2显示文摘 | Rybak A Fuchs H Hadian K | 2009 | Nat Cell Biol2009，11，12： | 1 |
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