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Although Alan certainly did not regard the practical analytical work as ' hack work ' , he returned to his fundamental research on the assessment of the possibilities of absolute chemical analysis by atomic absorption and on the testing of the peak atomic absorption method , by comparing measurements on aqueous solutions with the known oscillator strengths of elements over a wide range of oscillator strength values and excitation wavelengths . Furthermore , we applied our original tight-binding quantum chemical molecular dynamics method to the clarification of the dynamic behaviors of the hydroxyl group on the Pt / ZrO2 ( 111 ) and ZrO2 ( 111 ) surface . Paperless billing is a secure , cost effective billing method that will allow students to receive billing statements in a timely manner , as well as have the convenience of accessing up to 12 months of billing history . In the present study , we applied our novel tight-binding quantum chemical molecular dynamics method to the investigation on the photocatalytic oxidation dynamics of acetone by photogeneratedOH radicals on the hydrated anatase TiO2 surface . It is important not only to select the most effective ( and cost effective ) method , but also to have a realistic evaluation of the likelihood of success . We propose a variant of the maximum entropy discrimination method that uses variational bounding on classification constraints to make computations tractable in the latent case .