In this paper, tuning of COST-231 Hata prediction method has been carried out based on experiments at 2.3 GHz using WiMAX transmissions conducted in western India. Fine tuning of the model is carried out using large number of measurement records to increase the accuracy of the prediction. The parameters of this model are tuned based on a linear iterative tuning method. The path loss predictions...

Gaussian-3 total energies has been approximated using single-point Hartree-Fock-self-consistent field (HFSCF) total energies plus the correlation energy corrections calculated from the HF-SCF partial atomic charges according to the rapid estimation of correlation energy from partial charges (RECEP) method (Chem. Phys. Lett. 1999, 307, 469). Sixty-five closed-shell neutral molecules (composed of...

In this paper, we consider portfolio selection problem in which security returns are regarded as fuzzy variables rather than random variables. We first introduce a concept of absolute deviation for fuzzy variables and prove some useful properties, which imply that absolute deviation may be used to measure risk well. Then we propose two mean-absolute deviation models by defining risk as abs...

Four algorithms for simulating flicker FM phase noise (f−3 spectrum) are given, two old and two new. Their Allan deviation and mean square time interval error (MSTIE) are examined. The MSTIE shows that one of the old algorithms has deficient long-term phase deviations on average. The Allan deviation does not reveal this deficiency.

AIM To determine whether heart rate variability parameters vary between in-utero drug-exposed infants and controls. To determine correlations between Finnegan score and heart rate variability parameters. To differentiate those drug-exposed infants who require treatment from those infants who do not. METHODS A total of 24 jaundiced control subjects and 25 in-utero drug-exposed infants were enr...

PURPOSE To map health outcome related variables from a national register, not part of any validated instrument, with EQ-5D weights among stroke patients. METHODS We used two cross-sectional data sets including patient characteristics, outcome variables and EQ-5D weights from the national Swedish stroke register. Three regression techniques were used on the estimation set (n=272): ordinary lea...

This paper introduces a method based on the near-infrared spectroscopy for rapid measurement of the biodiesel conversion rate during the transesterification of triolein with methanol. To build the regression model between the conversion rate and the spectral date, the real conversion rate of glycerides to methyl esters was analyzed by Proton Nuclear Magnetic Resonance (HNMR) spectroscopy, and s...