نتایج جستجو برای: output model

تعداد نتایج: 2236503  

Data Envelopment Analysis (DEA) is a mathematic technique to evaluate the relative efficiency of a group of homogeneous decision making units (DMUs) with multiple inputs and outputs. The efficiency of each unit is measured based on its distance to the production possibility set (PPS). In this paper, the BCC model is used in output-oriented. The average return on profit as output and the covaria...

Journal: :razavi international journal of medicine 0
ghasem sadeghi bajestani department of biomedical engineering, science and research branch, islamic azad university, tehran, ir iran; department of biomedical engineering, science and research branch, islamic azad university, tehran, ir iran ali sheikhani department of biomedical engineering, science and research branch, islamic azad university, tehran, ir iran mohammad reza hashemi golpayegani department of biomedical engineering, amir kabir university of technology, tehran, ir iran farah ashrafzadeh paediatric neurology division, qaem hospital, mashhad university of medical sciences, mashhad, ir iran paria hebrani department of paediatrics, dr sheikh paediatric hospital, mashhad university of medical sciences, ir iran

conclusions the most effected parts in asd are lateral connections of hmasd. two-sided connections which are completely symmetric become more active, and cause extra synchronization. on the other hand, due to special characteristic of two-sided connections and their ability to simulate the same phased dynamics, they cause unnatural asymmetry in children’s eeg signal. these results are consisten...

Journal: :تحقیقات جغرافیایی 0
زهرا سیفری پژوهشکده هواشناسی سازمان هواشناسی کشور سیده مژگان قاضی میرسعید پژوهشکده هواشناسی سازمان هواشناسی کشور مجتبی ذوالجودی پژوهشکده هواشناسی سازمان هواشناسی کشور

abstract: in this study, it has been tried to test the accuracy of output and hence the model efficiency in the predictions of 24 and 48 hour precipitation forecasting by choosing different schemes be assessed. therefore, in order to test the accuracy of model product, two conditions of rainfall precipitation and lack of rainfall precipitation were considered. four thresholds were taken. adapti...

Journal: :journal of biomedical physics and engineering 0
a allahverdy department of medical physics & biomedical engineering, school of medicine, tehran university of medical sciences, tehran, iran. s rahbar department of medical physics & biomedical engineering, school of medicine, tehran university of medical sciences, tehran, iran. r r mirzaei department of immunology, school of medicine, tehran university of medical sciences, tehran, iran. m ajami department of immunology, faculty of medical sciences, tarbiat modares university, tehran, iran. a namdar department of immunology, school of medicine, isfahan university of medical sciences, isfahan, iran. s habibi department of immunology, school of medicine, tehran university of medical sciences, tehran, iran.

background: there are many studies to investigate the effects of each interacting component of tumor-immune system interactions. in all these studies, the distinct effect of each component was investigated. as the interaction of tumor-immune system has feedback and is complex, the alternation of each component may affect other components indirectly. objective: because of the complexities of tum...

Traditional Data Envelopment Analysis (DEA) models evaluate the efficiency of decision making units (DMUs) with common crisp input and output data. However, the data in real applications are often imprecise or ambiguous. This paper transforms fuzzy fractional DEA model constructed using fuzzy arithmetic, into the conventional crisp model. This transformation is performed considering the goal pr...

Journal: Iranian Economic Review 2002

In this paper, we introduce non-interest profit/loss sharing (PLS) banks into a three-period overlapping generations model. Two types, (low- and high quality) investments are assumed and capital accumulation and level of output in the steady state is considered. Then, administrative rationing is introduced to the model. It is shown that the level of capital accumulation and output in equilibriu...

Journal: :نشریه دانشکده فنی 0
رمضانعلی مهدوی نژاد دانشگاه تهران کامران تمیمی دانشگاه تهران

optimization of machining parameters is very important and the main goal in every machining process. surface finishing prediction is a pre-requirement to establish a center for automatic machining operations. in this research, a neuro-fuzzy approach is used in order to model and predict the surface roughness in dry turning. this approach has both the learning capability of neural network and li...

Hajir Karimi Sadra Azizi

In this study, a three–layer artificial neural network (ANN) model was developed to predict the pressure gradient in horizontal liquid–liquid separated flow. A total of 455 data points were collected from 13 data sources to develop the ANN model. Superficial velocities, viscosity ratio and density ratio of oil to water, and roughness and inner diameter of pipe were used as input parameters of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1394

اگرکیفیت معلم کلاس برای بهبودیادگیری دانش آموزحیاتی است،پس کیفیت اساتیددانشجو-معلمان، یابه عبارتی معلمین معلمان نیزبرای پیشرفت آموزش بسیارمهم واساسی است.ناگفته پیداست که یک سیستم مناسب آموزش معلمان ،معلمین با کیفیتی را تربیت خواهدکرد.که این کار منجربه داشتن مدارس خوب، ودرنتیجه نیروی کارماهرتروشهروندبهتربرای جامعه خواهدشد. اساتیددانشجو-معلمان نقشی بسیارمهم را در سیستم اموزش معلمان درسراسرجهان ای...

Journal: :مهندسی صنایع 0
مهدی اجلی sufi razi institute حسین صفری university of tehran

one of the biggest problems of using data envelopment analysis for the evaluation of performance is the weakness of the separability for the decision maker units. this problem is generalizable because of the lower quantity of units in comparison with the ¬input and output quantities of the model [1]. this matter considerably reveals itself in the evaluation process of 23 provincial gas companie...

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