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| 1 | Economic modeling of mechanized and semi-mechanized rainfed wheat production systems using multiple linear regression model显示文摘Mathematical modeling of economic indices is a challenging topic in crop production systems.The present study aimed to model the economic indices of mechanized and semimechanized rainfed wheat production systems using various multiple linear regression models.The study area was Behshahr County located in the east of Mazandaran Province,Northern Iran.The statistical population included all wheat producers in Behshahr County in 2016/17 crop year.Five input variables were human labor,machinery,diesel fuel,chemical(chemical fertilizers and chemical pesticides)costs,and the income was considered to be the output.The results showed that the cost of wheat production in the semimechanized system was higher than that of the mechanized system.In both systems,the highest cost was related to agricultural machinery input.Moreover,seed cost was lower in the mechanized system than that of the semi-mechanized system.The net return indicator was 993.68$ha1 and 626.71$ha1 for the mechanized and semi-mechanized systems,respectively.The average benefit to cost ratio was 3.46 and 2.40 for the mechanized and semi-mechanized systems,respectively,demonstrating the greater profitability of the mechanized system.The results of the evaluation of five types of regression models including the Cobb-Douglas,linear,2FI,quadratic and pure-quadratic for the mechanized and semi-mechanized production systems indicated that in the developed Cobb-Douglas model,the R2-value was higher than that of the quadratic model while RMSE and MAPE of the quadratic model were determined to be smaller than that of the Cobb-Douglas model.Therefore,the best model to investigate the relationship between input costs and the income of wheat production in both mechanized and semi-mechanized systems was the quadratic model. | Mobin Amoozad-Khalili Reza Rostamian Mahdi Esmaeilpour-Troujeni Armaghan Kosari-Moghaddam | 2020 | Information Processing in Agriculture2020，7，1： | 2 |
| 2 | The incidence, diagnosis, and management of pulmonary vein stenosis as a complication of atrial fibrillation ablation 显示文摘 | Rostamian A Narayan SM Thomson L | 2014 | Journal of inter- ventional cardiac electrophysiology2014，40，1： | 1 |
| 3 | 显示文摘 | Rostamian R Najafi M Rafati A A | 2011 | Chemical Engineering Journal2011，171，3： | 1 |
| 4 | Characteristics and relationship of periodontal disease with juvenile idiopathic and rheumatoid arthritis显示文摘 | Vahabi S Rostamian A Baniebrahimi G | 2015 | Dent Res J (Isfahan)2015，12，6： | 1 |
| 5 | Characteristics and relationship of periodontal disease with juvenile idiopathic and rheumatoid ar-thritis显示文摘 | Vahabi S Rostamian A Baniebrahimi G | 2015 | Dent Res J (Isfahan)2015，12，6： | 1 |
| 6 | Application of a SWAT model for estimating runoff and sediment in two mountainous watersheds in central Iran显示文摘 | ROSTAMIAN R JALEH A AFYUNI M | 2008 | Hydrol Sci J2008，53，5： | 1 |
| 7 | Synthesis andcharacterization of thiol-functionalized silica nano hollow sphereas a novel adsorbent for removal of poisonous heavy metal ionsfrom water : kinetics, isotherms and error analysis 显示文摘 | Rostamian R Najafi M Rafati A A | 2011 | ChemicalEngineering Journal2011，171，3： | 1 |
| 8 | The role of smears, cultures, and antibiotic sensitivity testing in the management of suspected infectious keratitis显示文摘 | S.D. McLeod A. Kolahdouz-Isfahani K. Rostamian C.W. Flowers P.P. Lee P.J. McDonnell | 1996 | Ophthalmology1996，，1： | 1 |
| 9 | A numerical technique for solving IHCPs using Tikhonov regularization method 显示文摘 | Pourgholi R Rostamian M | 2010 | Applied Mathematical Modelling2010，34，8： | 1 |
| 10 | Three-Dimensional Echocardio- graphic Assessment of Patent Foramen Ovale in Platypnea-Orthodeoxia 显示文摘 | Rostamian A Rathod A Makkar RR | 2013 | Eehocardiography2013，25，： | 1 |
| 11 | Application of a SWAT model for estimating runoff and sediment in two mountainous watersheds in central Iran显示文摘 | Rostamian R Jaleh A Afyuni M | 2008 | Hydrol- ogy Science Journal2008，53，5： | 1 |
| 12 | Silica gel supported ferric perchlorate : a new and efficient reagent for one pot synthesis of amides from benzylic alcohols 显示文摘 | Peyman Salehi Aghamorad Rostamian Motlagh | 2000 | Synthetic Communications2000，30，4： | 1 |
| 13 | A numerical technique for solving IHCPs using Tikhonov regulariza-tion method 显示文摘 | Pourgholi R Rostamian M | 2010 | Applied Mathematical Modelling2010，34，8： | 1 |
| 14 | Application of a SWAT model for estimating runoff and sediment in two mountainous basins in central Iran显示文摘 | Rostamian R Jateh A Afyuni M | 2008 | Hydrological Sciences Journal2008，53，5： | 1 |
| 15 | 无老年痴呆症的老年患者的认知功能与生存状况刘青(译),叶鹏(摘,审校)显示文摘特定区域认知功能的损害与死亡风险的增加相关。该研究前瞻性地评估了无痴呆老年受试者执行功能和记忆与长期死亡率的关系。此外,研究者调查了结构性大脑异常在这种关联中的作用。研究者纳入了547名无痴呆受试者(平均年龄78岁,男性占56.5%),他们来自高危老人服用普伐他汀的前瞻性研究(the prospective study of pravastatin in the elderlyat risk.PROSPER)的磁共振成像亚组。 | 刘青(译) 叶鹏(摘/审校) Rostamian S de Haan S van der Grond J van Buchem MA Ford I Jukema JW Sabayan B | 2019 | 中华高血压杂志2019，27，7： | 1 |
| 16 | Approximate solutions of K (2,2),KdV and modified KdV equations by variationaliteration method,homotopy perturbation method and homotopy analysis method显示文摘 | TariH Ganji D D Rostamian M | 2007 | International Journal of NonlinearSciences and Numerical Simulation2007，8，2： | 1 |
| 17 | The principle of linearized stability for a class of degenerate diffusion equations显示文摘 | Bertsch M Rostamian R | | 0，，57： | 1 |
| 18 | A numerical technique for solving IHCPs using Tikhonov regularization method显示文摘 | Pourgholi R Rostamian M | 2010 | Applied Mathematical Modelling2010，34，： | 1 |
| 19 | The incidence, diagnosis, and management of pulmonary vein stenosis as a complication of atrial fibrillation ablation显示文摘 | Armand Rostamian Sanjiv M. Narayan Louise Thomson Michael Fishbein Robert J. Siegel | 2014 | Journal of Interventional Cardiac Electrophysiology2014，，： | 1 |
| 20 | A numerical technique for solving IHCPs using Tikhonov regularization method显示文摘 | Pourgholi R Rostamian M | 2010 | Applied Mathematical Modeling2010，34，8： | 1 |
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