Air curtains (ACs) are plane turbulent impinging jets that used to separate two environments in terms of heat and mass transfer while still allowing traffic between these environments. The many applications ACs across a wide variety industries makes the evaluation their performance an important but difficult task. aim this paper is introduce indicator, called adapted separation efficiency, suit...

The operational plan converts dream and imagination to a reality; in fact, it is anassured way to achieve organizational perspectives. The present study aimsto identify the performance indicators and to investigate the relationship between the operational performances of industrial manufacturing companies in terms of innovation, quality, productivity and efficiency. A researcher-made questionna...

As governmental subsidies to universities are declining in recent years, sustaining excellence in academic performance and more efficient use of resources have become important issues for university stakeholders. To assess the academic performances and the utilization of the resources, two important issues need to be addressed, i.e., a capable methodology and a set of good performance indica...

radial models of dea to measure the efficiency of dmus assumed an inefficient unit to be efficient must decrease (increase) proportional all inputs (outputs) as the same. this assumption is absolutely false, unnecessary and unrealistic, therefore, to address this deficiency, and raise awareness of how to use resources, it is so realistic that expect the various inputs have different efficiency....

Unsupervised algorithms can be used in digital communications to estimate the channel at the receiver without using pilot symbols, thus obtaining a considerable improvement in terms of data rate, spectral efficiency, and energy consumption. Unfortunately, the computational load is considerably high since they require to estimate Higher Order Statistics. For addressing this issue, it has been re...

Rate-distortion otpimization procedures are very often used in rate allocation problems encountered in source encoders. However , these procedures can be, depending on the number of quantizers considered, very time consuming. This paper describes a sim-pliied approach relying on statistical signal and noise modeling. The strategy presented leads to performances comparable to a classical rate-di...