INTRODUCTION Brain death is generally accepted as a concept to indicate death. It was introduced about 40 years ago, and it was considered the ideal situation for donation of organs. METHODS During this time, however, there have been problems in the understanding of this concept both in the medical profession and in the general population. University students from medical and non-medical scho...

This paper presents a new family of complex spreading sequences designed using mutually orthogonal(MO) complementary sets. Based on the technique described in this paper, the correlation properties ofsets ofsequences are compared to well-known Walsh-Hadamard sequence sets. Further improvement of correlation qualities can be achieved by employing a diagonal modification method. We also present s...

an efficiency-centred hierarchical model is developed to assess the performance ofwastewater treatment plants (wwtps). specifically, a new treatment performance index (tpi) hasbeen proposed to determine the overall treatment performance of wwtp by analysing the tpivalues and the weights of individual treatment phase for overall treatment performance. threemodules have been developed to examine ...

sohrabi and nalchigar (2010) proposed a new data envelopment analysis (dea) model to identify the most efficient decision-making unit (dmu) in presence of imprecise data. in this paper, it is shown that the proposed model is not able to determine the most efficient dmu and is randomly introduced an efficient dmu. in addition, it is shown that this model determines the most efficient dmu in the ...

this paper shows the role of the general dynamic model in empirical research of production technology in agriculture. the model is a first order autoregressive multivariate specification, first developed by anderson and blundell. this model is general enough to nest several simpler dynamic as well as static models within it. therefore, it provides a framework for applying classical testing ...