نتایج جستجو برای: empirical hybrid model

تعداد نتایج: 2397988  

Journal: :journal of industrial engineering, international 2011
m khashei f mokhatab rafiei m bijari s.r hejazi

computational intelligence approaches have gradually established themselves as a popular tool for forecasting the complicated financial markets. forecasting accuracy is one of the most important features of forecasting models; hence, never has research directed at improving upon the effectiveness of time series models stopped. nowadays, despite the numerous time series forecasting models propos...

Journal: :تحقیقات مهندسی کشاورزی 0
مژده خلیلی دانش آموخته کارشناسی ارشد آبیاری و زهکشی دانشگاه علوم کشاورزی و منابع طبیعی گرگان مهدی اکبری دانشیار موسسه تحقیقات فنی و مهندسی کشاورزی ابوطالب هزارجریبی دانشیار گروه مهندسی آب دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان مهدی ذاکری نیا استادیار گروه مهندسی آب دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان فریبرز عباسی استاد موسسه تحقیقات فنی و مهندسی کشاورزی

optimal use of water resources is essential to decrease cost and maximize available water resources. subsurface drip irrigation can increase irrigation and water use efficiency. this irrigation method distributes water into the soil, leaving the surface of the soil dry and decreasing evaporation. in the design of subsurface drip irrigation (sdi) systems, the dimensions of the wetted onion deter...

2015
Yangguang Huang Quan Wen

We study a hybrid mechanism that combines auction and lottery to allocate indivisible goods. One advantage of hybrid mechanism is to balance e ciency, revenue, and equality. In this model, players self-select into a multi-unit auction with unknown number of bidders. We characterize one symmetric Bayesian Nash equilibrium where auction participants use a monotone bid function. Based on this equi...

The efficiency measurement is a subject of great interest. The majority of studies on DEA models have been carried out using radial or non-radial approaches regarding the application of DEA for the efficiency measurement. This paper, based on the directional distance function, proposes a new generalized hybrid measure of efficiency under generalized returns to scale with the existence of both r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Journal: :International Journal of Information Technology and Computer Science 2012

Journal: :iranian red crescent medical journal 0
abbas heydari department of medical surgical nursing, faculty of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran fatemeh khorashadizadeh assistant professor, deparment of nursing, north khorasan university of medical sciences, bojnurd, ir iran; phd in nursing, mashhad university of medical sciences, mashhad, ir iran; deparment of nursing, north khorasan university of medical sciences, bojnurd, ir iran. tel: +98-9153867734, fax: +98-5138591511 fatemeh heshmati nabavi department of mental health and management, faculty of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran seyed reza mazlom department of medical surgical, faculty of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran mahdi ebrahimi department of islamic studies, mashhad university of medical sciences, mashhad, ir iran

conclusions islam has a unique perspective on spiritual health as it encompasses all aspects of human beings. thus, it is necessary to carefully study the difference between the islamic concept of spiritual health and that of other religions and ideologies to design suitable and useful nursing care for iranian patients that satisfy their spiritual needs. results the relevant literature in the t...

Journal: :journal of linear and topological algebra (jlta) 0
a mirsalehy university putra malaysia. malaysia m rizam abu baker university putra malaysia. malaysia l soon lee universiti putra malaysia. malaysia gh. r jahanshahloo science and research branch. islamic azad university. iran

the efficiency measurement is a subject of great interest. the majority of studies on dea models have been carried out using radial or non-radial approaches regarding the application of dea for the efficiency measurement. this paper, based on the directional distance function, proposes a new generalized hybrid measure of efficiency under generalized returns to scale with the existence of both r...

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