the quantitative structure-retention relationship (qsrr) of nanoparticles in roadside atmosphere against the comprehensive two-dimensional gas chromatography which was coupled to high-resolution time-of-flight mass spectrometry was studied. the genetic algorithm (ga) was employed to select the variables that resulted in the best-fitted models. after the variables were selected, the linear multi...

Meteorological parameters play a significant role in affecting ambient air quality of an urban environment. As Dhaka, the capital city of Bangladesh, is one of the air pollution hotspot among the megacities in the world, however the potential meteorological influences on criteria air pollutants for this megacity are remained less studied. The objectives of this research were to examine the rela...

This note considers some aspects of the computational problem of by minimizing the sum of absolute deviations Yt = t 1 x· t l3· l= l l fitting the regression model (t = 1, 2, ... , n) r!: 1 x· t l3·1 l= l l The iterative method recently proposed by Schlossmacher (1973) is shown to have undesirable features under certain conditions. The linear programming approach using the simplex method as sug...

Investigation of river flow volume in different conditions as a function temperature and rainfall variables can be quite effective understanding the hydrological hydro-climatic watershed. Multiple linear regression models were applied estimating several studies due to their straightforwardness appropriate interpretation results. In this study, overcome limitations multiple model, Bayesian quant...

This study connected with the aim of relationship between attitudes and social competence in parent-child emotional metacognition. With Cochran formula and Multi-stage cluster random sampling method 250 students were selected as a sample size. Emotional metacognition questionnaires conducted on students and their parents to complete the religious attitudes and social competence. Statistical mod...

QSPR study on benzene derivatives have been made using recently introduced topological methodology. In this study the relationship between the Randic' (x'), Balaban (J), Szeged (Sz),Harary (H), Wiener (W), HyperWiener and Wiener Polarity (WP) to the thermal energy (Eth), heat capacity (CV) and entropy (S) of benzene derivatives is represented. Physicochemical properties are taken from the quant...