This paper deals with the assessment of finite population mean. An estimator is suggested for estimation mean study variable. The purpose this to evolve a ratio-type enhance proficiency existing estimators considered in sample random sampling without replacement using information auxiliary Expressions bias and square error (MSE) proposed was derived by Taylor series method. efficiency condition...

The narrowband Internet of Things (NB-IoT) is a cellular technology introduced by the third-generation partnership project (3GPP) to provide connectivity large number low-cost (IoT) devices with strict energy consumption limitations. However, in an ultradense small cell network employing NB-IoT technology, intercell interference can be problem, raising serious concerns regarding performance NB-...

We studied families of discrete dynamical systems obtained by using iteration functions given by weighted power mean in order to understand the role of hyperrapid convergence in nonlinear maps. Our interest resides in concepts related to the velocity of convergence. We introduce new concepts regarding the time of convergence and we provide an ordering of these families according to their depend...

The power of mean reversion tests has long been a tacit issue of the market efficiency literature. Early tests of market efficiency, as summarized in Fama Ž . 1970 , found no economically significant evidence of serial correlation in stock Ž . returns. However, Summers 1986 later suggested that this was because these tests lacked power: Summers suggested a model of AfadsB in which stock prices ...