Nonhomogeneity of the Measuring Channels in Technological Seismic Prospecting and Related Problems

A serious intrinsic contradiction in the MOCDP method related to a disastrous mistake in the technical realization of the synthesis of the method of multiple overlapping (MO) and the common-depth-point (CDP) method is discussed. Possible ways of partial removal of this contradiction are pointed out. Bibliography: 18 titles.     

Combining endogenous and exogenous variables in a special case of non-parametric time series forecasting model

We address a problem of increasing quality of forecasting time series by taking into account the information about exogenous time series. We aim to improve a non-parametric forecasting algorithm that minimizes the convolution of a histogram of time series with the loss function. We propose to adjust the histogram, using mixtures of conditional histograms as a less sparse alternative to multidimensional histogram and in some cases demonstrate the decrease of loss compared to the basic forecasting algorithm. To the extent of our knowledge, such approach to combining endogenous and exogenous time series is original and has not been proposed yet. The suggested method is illustrated with the data from the Russian Railways.     

Kinetics,Substrate Selectivity and Mechanism of the Oxidation of Alkenes by Peroxynitrous Acid

The kinetic features of the oxidation of alkenes by peroxynitrous acid (HOONO) generated in the H₂O₂–HNO₂/acetate buffer (pH 4.27) system, are quantitatively explained assuming simultaneous reactions in the gas and liquid phases. A remarkable similarity is found for the substrate selectivities of the gas-phase reactions of alkenes as well as of alkanes and arenes with HOONO and with ^·OH radicals. The reaction mechanism is discussed.