نتایج جستجو برای: Gained Output Ratio

تعداد نتایج: 725074  

The humidification-dehumidification system is one of the desalination technologies that can utilize non-fossil thermal sources and requires insignificant input energy. This system is usually suitable for rural areas and places far from the main sources of energy. The purpose of this study is to obtain the most suitable working conditions and dimensions of this system. In this research, thermody...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده مدیریت 1392

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Journal: :Journal of Radiation Research 2013

Journal: :مهندسی صنایع 0
بابک سهرابی دانشگاه تهران سروش نالچیگر دانشگاه تهران

data envelopment analysis (dea) is a widely recognized approach for evaluating the efficiencies of decision making units (dmus). because of easy and successful application and case studies, dea has gained much attention and widespread use by business and academy researchers. the conventional dea models (e.g. bcc and ccr) make an assumption that input and output data are exact values on a ratio ...

آتشک, محمد, فرمهینی فراهانی, محسن ,

This research aims at studying the impact of inputs on the output of middle school education system in Iran’s provinces. Hence, first the output of lower secondary level education system in provinces of Iran is calculated on the basis of indicators approved by International Institute for Educational Planning & UNESCO Institute for Statistics. The results showed that provinces Such as Sistan & B...

2005
FRANÇOIS CHAPEAU-BLONDEAU DAVID ROUSSEAU

It is demonstrated that benefits from the noise can be gained at various levels in stochastic resonance. Raising the noise can produce signal amplification as well as signal-tonoise ratio improvement, input–output gain exceeding unity in signal-to-noise ratio, and enhanced performance in optimal processing. This series of benefits is successively exhibited in the processing of a periodic signal...

2007
CHUNLU LIU YU SONG

Research on the international comparison of productivity has gained significant interest throughout several previous decades. Relatively little work has however been done in the real estate sector. This paper aims to develop a new productivity measurement framework for the international comparison of the real estate sector based on the newly-published OECD input-output database. Three multifact...

2013
Hisayuki Miyashita Shogo Hatanaka Yukio Fujita Shimpei Hashimoto Atsushi Myojyoyama Hidetoshi Saitoh

Output factor (Scp) is one of the important factors required to calculate monitor unit (MU), and is divided into two components: phantom scatter factor (Sp) and in-air output ratio (Sc). Generally, Sc for arbitrary fields are calculated using several methods based on Sc determined by the absorbed dose measurement for several square fields. However, there are calculation errors when the treatmen...

2013
Jacob A. Miller Syed M. Zubair Gregory P. Thiel John H. Lienhard

The impact of mass extractions and injections as a method for increasing the energetic performance of fixed-size humidification-dehumidification desalination systems is examined. Whereas previous studies of this problem have been restricted to thermodynamic models, the use of a more complete model that includes transport provides the ability to quantify the impact of mass extractions/injections...

Journal: :Proceedings of the National Academy of Sciences 1970

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