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| 1 | Optimum mining method selection using fuzzy analytical hierarchy process–Qapiliq salt mine,Iran显示文摘Mining method selection is the first and the most critical problem in mine design and depends on some parameters such as geotechnical and geological features and economic and geographic factors.In this paper,the factors affecting mining method selection are determined.These factors include shape,thickness,depth,slope,RMR and RSS of the orebody,RMR and RSS of the hanging wall and footwall.Then,the priorities of these factors are calculated.In order to calculate the priorities of factors and select the best mining method for Qapiliq salt mine,Iran,based on these priorities,fuzzy analytical hierarchy process(AHP) technique is used.For this purpose,a questionnaire was prepared and was given to the associated experts.Finally,after a comparison carried out based on the effective factors,between the four mining methods including area mining,room and pillar,cut and fill and stope and pillar methods,the stope and pillar mining method was selected as the most suitable method to this mine. | Karimnia Hamed Bagloo Heydar | 2015 | International Journal of Mining Science and Technology2015，25，2： | 7 |
| 2 | Discrete-time based sliding-mode control of robot manipulators显示文摘Purpose-The purpose of this paper is to develop sliding mode control with linear and nonlinear manifolds in discrete-time domain for robot manipulators.Design/methodology/approach–First,a discrete linear sliding mode controller is designed to an n-link robot based on Gao’s reaching law.In the second step,a discrete terminal sliding mode controller is developed to design a finite time and high precision controller.The stability analysis of both controllers is presented in the presence of model uncertainties and external disturbances.Finally,sampling time effects on the continuous-time system outputs and sliding surfaces are discussed.Findings–Computer simulations on a three-link SCARA robot show that the proposed controllers are robust against model uncertainties and external disturbance.It was also shown that the sampling time has important effects on the closed loop system stability and convergence.Practical implications-The proposed controllers are low cost and easily implemented in practice in comparison with continuous-time ones.Originality/value-The novelty associated with this paper is the development of an approach to finite time and robust control of n-link robot manipulators in discrete-time domain.Also,obtaining an upper bound for the sampling time is another contribution of this work. | Sajjad Shoja Majidabad Heydar Toosian Shandiz | 2012 | International Journal of Intelligent Computing and Cybernetics2012，5，3： | 2 |
| 3 | Osteochondral autograft transfer (mosaicplasty) for treatment of patients with osteochondral lesions of talus显示文摘Purpose:Osteochondral lesion of talus(OLT)is one of the common causes of ankle pain.This disorder is common in young athletes after ankle injury.There are various therapeutic options.One of the options is mosaic plasticizer.The purpose of this study was to investigate the effect of mosaicplasty on improvement of symptoms of patients with osteochondral lesions of talus.Methods:Nineteen patients with osteochondral lesions of talus participated in this study,who were treated with mosaicplasty.Before and after treatment,pain(visual analogue scale),function(American Orthopaedic Foot and Ankle Society),range of motion and radiographic signs were evaluated.Results:The results of this study showed that mosaicplasty could significantly reduce pain,increase function and improve radiographic symptoms.The range of motion increased after treatment,which was not significant.Conclusion:We can confirm the effect of mosaicplasty on the improvement of patients with osteochondral lesions of the ankle,suggesting it as a treatment option. | Amir Sabaghzadeh Fateme Mirzaee Heydar Shahriari Rad Fateme Bahramian Ardeshir Alidousti Hamidreza Aslani | 2020 | Chinese Journal of Traumatology2020，23，1： | 2 |
| 4 | Composite automated distribution system reliability model considering various automated substations 显示文摘 | Hajian-Hoseinabadi Hamze Golshan Mohamad Esmail Hamedani Shayanfar Heydar Ali | 2014 | Electrical Power and Energy Systems2014，54，： | 1 |
| 5 | Reducing resin content and board density without adversely affecting the mechanical properties of particleboard through controlling particle size显示文摘Density and resin content are two factors that have a signifi- cant effect on the production cost of wood composite. However, particle size affects resin content and density, which suggests that the interaction of these three factors can be manipulated to reduce the board density and resin content of particleboard without adversely influencing its mechani- cal properties. Some mathematical functional forms based on resin con- tent, board density and slenderness ratio were regressed and an appropri- ate form was chosen. According to analysis of the results using SHA- ZAM 9 software, the exponential function best fit the experimental data. Finally, 'indifference curves' of mechanical properties were illustrated and analyzed. The results indicated that negative effects of density or resin content reduction on mechanical properties could be compensated for by controlling particles' slenderness ratio. Interestingly, increases in slenderness ratio compensated for the negative effects of decreases in resin content or board density on module of rupture (MOR) and module of elasticity (MOE). Moreover, this 'compensation ratio' intensified as resin content or density decreased and/or as the MOR or MOE increased. On the other hand, reduction in slenderness ratio indicated a comple- mentary effect on reducing internal bond (IB) strength, a result of de- creases in resin content or density. Moreover, this 'complementary ratio' was intensified as resin content or density decreased and/or as IB strength increased. | Mohammad Arabi Mehdi Faezipour Heydar Gholizadeh | 2011 | Journal of Forestry Research2011，22，4： | 1 |
| 6 | 重组组织型纤维蛋白酶原激活剂治疗白内障手术后的纤维蛋白膜(英文)显示文摘目的:研究重组组织型纤维蛋白酶原激活剂(tPA)对于治疗白内障手术后的纤维蛋白膜的作用。方法:选取白内障人工晶状体植入术后中度至重度纤维蛋白膜15例,行25μgtPA前房注射。同时给与持续的局部激素和睫状肌麻痹剂治疗,以及常规的裂隙灯检查和眼压监测。结果:在前房注射tPA的15眼中,其中9眼(60.0%)在2h后纤维蛋白膜完全溶解,11眼(73.3%)在1d内完全溶解。3眼内注射tPA几天后纤维蛋白膜复发。注射tPA24h后可观察到前房反应(P=0.54)和角膜水肿(P=0.083)增加。裂隙灯和眼压检查未发现明显的毒副作用。实验得到预期的稳定结果。结论:前房注射tPA用于治疗白内障手术后出现的纤维蛋白膜具有安全有效的作用。由于病例数量较少,需要进一步观察。 | Heydar Siatiri Bahram Eshraghi Mohammad Taher Rajabi Firoozeh Rahimi Nasim Siatiri | 2007 | 国际眼科杂志2007，7，3： | 1 |
| 7 | Symmetry and limb dominance in able-bodied gait:a review显示文摘 | Heydar S Paul A Francois P | 2000 | Gait and Posture2000，12，1： | 1 |
| 8 | Muscle Power Compensatory Mechanisms in Below-knee Amputee Gait显示文摘 | Heydar Sadeghi Allard Paul Duhaime | 2001 | Muscle Power Compensatory Mech-anisms2001，1，2： | 1 |
| 9 | Decentralized sliding mode control of fractional-order large-scale nonlinear systems显示文摘 | Sajjad Shoja Majidabad Heydar Toosian Shandiz Amin Hajizadeh | 2014 | Nonlinear Dynamics . 2014 (1-2)2014，，1： | 1 |
| 10 | Idempotent Completions of Operator Partial Matrices | Heydar Radjavi Peter Rosenthal | 1999 | Acta Mathematica Sinica,English Series1999，15，3： | 1 |
| 11 | Transitive Spaces of Operators显示文摘 | Kenneth R. Davidson Laurent W. Marcoux Heydar Radjavi | 2008 | Integral Equations and Operator Theory2008，，2： | 1 |
| 12 | Symmetry and limb dominance in able-bodied gait:a review 显示文摘 | Heydar S Paul A Francois P | 2000 | Gait and Posture2000，12，1： | 1 |
| 13 | Crystalline degradation products of vancomycin as a new chiral stationary phase for liquid chromatography 显示文摘 | GHASSEMPOUR A ABDOLLAHPOUR A TABAR- HEYDAR K | 2005 | Chromatographia2005，61，34： | 1 |
| 14 | 新型吡咯烷键合反相高效液相色谱固定相的制备与研究(英文)显示文摘A new ionic liquid-based high-performance liquid chromatography stationary phase is reported.A derivative of N-methyl pyrrolidinium tetrafluoroborate was covalently immobilized on the surface of silica particles to prepare silica-based N-methyl pyrrolidinium tetrafluoroborate(SilprMP BF4)stationary phase.The obtained ionic liquid-modified silica was evaluated and confirmed by elemental analysis,infrared spectroscopy,and thermogravimetric analysis.A column was packed with the modified particles.The retention behavior of aromatic compounds,alkyl benzenes,and acidic and basic compounds on the SilprMP BF4 stationary phase was studied under reversed-phase liquid chromatography conditions.The effect of the eluent pH on the separation of the acidic and basic compounds was also studied.The new stationary phase involves multiple retention mechanisms,such as electrostatic,hydrophobic,ion-dipole,and anion-exchange interactions,which might lead to multipurpose separation media. | Elahe NAGHDI Kourosh TABAR HEYDAR Ali SHARIFI Seyyed Hamid AHMADI | 2017 | 色谱2017，35，11： | 0 |
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