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| 1 | Application of a fuzzy analytical hierarchy process to the prediction of vibration during rock sawing显示文摘A new predictive model for evaluating the vibration of a sawing machine was developed using a new rock classification system. The predictors are machine parameters and a rock sawability index. The new rock classification system includes four major parameters of the rock: uniaxial compressive strength, abrasiv- ity index, mean Moh's hardness, and Young's modulus. The FAHP approach was used when determining the weights of these parameters by six decision makers. Two groups of carbonate rocks were sawn using a fully-instrumented laboratory sawing rig at different feed rates and depths of cut. During the sawing trials system vibration was monitored as a measure of saw performance. Then, a new statistical model was obtained by multiple regression on the machining parameters and the rock sawability index. The model is very useful for the evaluation of the system vibration, and for selecting suitable machining parameters, from a limited set of mechanical properties. | Mikaeil Reza Ataei Mohammad Yousefi Reza | 2011 | Mining Science and Technology2011，21，5： | 9 |
| 2 | Monte Carlo Analytic Hierarchy Process (MAHP) approach to selection of optimum mining method显示文摘One of the most critical and complicated steps in mine design is a selection of suitable mining method based upon geological,geotechnical,geographical,safety and economical parameters.The aim of this study is developing a Monte Carlo simulation to selection the optimum mining method by using effective and major criteria and at the same time,taking subjective judgments of decision makers into consideration.Proposed approach is based on the combination of Monte Carlo simulation with conventional Analytic Hierarchy Process(AHP).Monte Carlo simulation is used to determine the confdence level of each alternative’s score,is calculated by AHP,with the respect to the variance of decision makers’opinion.The proposed method is applied for Jajarm Bauxite Mine in Iran and eventually the most appropriate mining methods for this mine are ranked. | Ataei Mohammad Shahsavany Hashem Mikaeil Reza | 2013 | International Journal of Mining Science and Technology2013，23，4： | 8 |
| 3 | Correlation of production rate of ornamental stone with rock brittleness indexes 显示文摘 | MIKAEIL R ATAEI M YOUSEFI R | 2013 | Arabian Journal of Geosciences2013，6，： | 1 |
| 4 | Predicting the production rate of diamond wire saws in carbonate rocks cutting 显示文摘 | MIKAEIL R ATAEI M HOSEINIE SH | 2008 | Industrial Diamond Review2008，3，： | 1 |
| 5 | The application of fuzzy analytic hierarchy process (FAHP) approach to selection of optimum underground mining method for Jajarm Bauxite Mine, Iran 显示文摘 | Naghadehi M Z Mikaeil R Ataei M | 2009 | Expert Systems with Applications2009，36，4： | 1 |
| 6 | Multifactorial fuzzy approach to the penetrability classification of TBM in hard rock conditions显示文摘 | Reza Mikaeil Masoud Zare Naghadehi Farhang Sereshki | 2009 | Tunnelling and Underground Space Technology incorporating Trenchless Technology Research2009，，5： | 1 |
| 7 | The application of fuzzy analytic hierarchy process (FAHP) approach to selection of optimum underground mining method for Jajarm Bauxite Mine,Iran显示文摘 | Naghadehi M Z Mikaeil R Ataei M | 2009 | Expert Systems with Applications2009，36，4： | 1 |
| 8 | The application of fuzzy analytic hierarchy process(FAHP)approach to selection of optimum underground mining method for Jajarm Bauxite Mine,Iran显示文摘 | Naghadehi M Z Mikaeil R Ataei M | 2009 | Expert Systems with Applications2009，36，4： | 1 |
| 9 | A decision sup- port system using fuzzy analytical hierarchy process (FAHP) and TOPSIS approaches for selection of the opti- mum underground mining method 显示文摘 | Mikaeil R Naghadehi M Z Ataei M | 2009 | Archives of Mining Sciences2009，54，2： | 1 |
| 10 | Physical modeling into outflow hydrographs and breach characteristics of homogeneous earthfill dams failure due to overtopping显示文摘The main objective of the present study is to introduce new empirical equations for the determination of breach geometrical dimensions and peak outflow discharge(Q_(p)).Therefore,a historic failure database of 109 embankments was collected and examined.The most important factors that affect the breach evolution,including grading size,hydraulic,and outflow characteristics are also studied.Some of the parameters used for the determination of Q_(p) and average breach width(Bave)have a significant effect on the erosion process,but they are less reflected in the technical literature.To study the behavior of noncohesive soils during overtopping,15 physical tests were performed at the laboratory,and the effects of interfering parameters were investigated.The experimental output hydrograph was used to simulate the hydrographs resulting from the failure of real dams,and recent artificial intelligence techniques along with linear and nonlinear regression models were employed.The area-time analysis of the laboratory hydrographs shows that the soil particle size and the characteristics of reservoir-basin significantly affect the rate of breach formation and outflow discharge.New relationships are introduced,based on the breach characteristics,by a combination of historical and experimental data,as well as case studies conducted on the hypothetical failure of 10 operational dams.The mathematical model is also used to simulate the process of breach evaluation.Based on statistical indices,comparison of the results,and sensitivity analysis,the developed equations can better express the susceptibility of materials to erosion and their application can minimize downstream vulnerabilities. | KOUZEHGAR Kamran HASSANZADEH Yousef ESLAMIAN Saeid YOUSEFZADEH FARD Mikaeil BABAEIAN AMINI Alireza | 2021 | Journal of Mountain Science2021，18，2： | 0 |
| 11 | Assessment of the knowledge level of radiographers and CT technologists regarding computed tomography parameters in Iran显示文摘Objective:To evaluate the knowledge of CT technologists and radiographers concerning CT parameters,in order to keep CT users be aware of all CT parameters and their impact on image quality and patient dose while keeping their knowledge up to date.Methods:This cross-sectional descriptive-analytic study was conducted in Zanjan province,Iran,using a valid and reliable online questionnaire with 53 questions distributed to 153 radiology personnel.Each questionnaire included questions about demographic characteristics and CT parameters,including kVp,mAs,image noise,slice thickness,pitch and automatic tube current modulation(ATCM),and the effects of these parameters on image quality and radiation dose.Results:A response rate of 61.0%(94/153)was achieved.This study enrolled 30 radiographers and 64 CT technologists.There was no significant difference in the mean scores of the two groups(52.169.90 vs.56.0912.00,t=1.545,P=0.126).CT personnel had the highest and lowest knowledge scores in image reconstruction(t=28.33,P=0.001)and mAs(t=4.27,P=0.590),respectively,whereas radiographers had the highest and lowest knowledge scores in the fields of image noise(t=9.85,P=0.015)and kVp(t=12.73,P=0.007),respectively.Conclusions:The total knowledge scores of CT technologists and radiographers for various scan parameters affecting image quality and dose were insufficient.Thus,it is recommended that regular retraining courses be held to enhance and update technologists’knowledge. | Zahra Kazemi Khadijeh Hajimiri Faranak Saghatchi Mikaeil Molazadeh Hamed Rezaeejam | 2023 | Radiation Medicine and Protection2023，4，1： | 0 |
| 12 | 切割机在切割块石时的性能评估(英文)显示文摘切割机的能耗和振动性能直接影响到生产成本。本研究的目的是通过系统的实验研究,使用混合智能模型来评估切削机床的性能。建立了一个关于碳酸盐岩和花岗岩的数据库,确定极限抗压强度、弹性模量、莫氏硬度、Schmiazek 磨耗系数等物理力学参数和切削深度、进给速度等操作参数为输入参数。将多层感知器人工神经网络与遗传算法(GANN-BP)、支持向量回归法与布谷鸟优化算法(SCA-SVR)相结合,建立预测模型。结果表明,所建立的 GANN-BP 模型与 COA-SVR 模型性能相近,与实测值吻合较好。这些结果也表明,这些模型是评价切削机床性能的合适工具。 | Mohammad ATAEI Sadjad MOHAMMADI Reza MIKAEIL | 2019 | Journal of Central South University2019，26，7： | 0 |
| 13 | 金刚石绳锯切割碳酸盐石材的生产效率预测显示文摘文章对金刚石绳锯的生产效率进行了预测研究,测量了伊朗13个采石场中金刚石绳锯切割碳酸盐石材的性能。从这些采石场的石材荒料中分别选取石材样品用于实验室测试,测定其中石英含量及单轴抗压强度(UCS),发现生产率与对应的石英含量和单轴抗压强度相关。运用多元与单元回归分析评价锯切效率与石材性能的相互关系,通过统计测试验证开发的模型,研究认为运用该模型可有效预测金刚石绳锯切割碳酸盐石材的锯切效率。 | R·Mikaeil M·Ataei S·H·Hoseinie 刘燕(编译) 罗劬侃(编译) | 2009 | 石材2009，，1： | 0 |
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