@article{Tuluchenko_Chursina_Krugliy_2016, title={Homogeneity investigation of oil flax processing products by quality indexes}, volume={6}, url={https://journals.uran.ua/eejet/article/view/83593}, DOI={10.15587/1729-4061.2016.83593}, abstractNote={<p>The paper analyzes the homogeneity of the stochastic structure of the samples of oil flax fibres of the Ukrainian and Polish selections. The distribution laws of fibres as mixtures of the normal and logarithmically normal distribution laws are identified. The general probability distribution law of fibre lengths of oil flax of the Ukrainian selection is a mixture of four logarithmically normal laws of distribution, and the general probability distribution law of fibre lengths of oil flax of the Polish selection is a mixture of a normal distribution law and three logarithmically normal laws of distribution. The parameters of the relevant components of the common distribution laws are found as a result of solving the problem of nonlinear optimization using the method of generalized lowering gradient that is implemented in Excel tabular processor.</p><p>The adequacy of the built nonlinear models of the distribution laws is proved by estimating the value of the determination index.</p><p>The comparative analysis of distribution laws of general totalities, from which the oil flax fibre samples of the Ukrainian and Polish selections are obtained, is conducted by the Kolmogorov-Smirnov statistical criterion. This criterion allows us to test and reject the hypothesis about belonging of two independent samples to the same general totality.</p><p>The analysis of the general distribution laws shows that the oil flax fibres of the Ukrainian selection have a more pronounced tendency to stratification by a fibre length. Such a fibre is easily divided into factions. The oil flax fibres of the Polish selection have a larger part of short and extra-long fibres. Thus, it is clear that raw materials of the Ukrainian selection are more suitable for the production of non-woven materials of different target purposes, and the Polish selection - for the production of ropes, cords, etc.</p><p>The obtained results can be used by specialists at processing enterprises for a reasonable choice of raw materials, optimization of processing modes and improving ready-made product quality.</p>}, number={3 (84)}, journal={Eastern-European Journal of Enterprise Technologies}, author={Tuluchenko, Nadiia and Chursina, Ludmila and Krugliy, Dmitriy}, year={2016}, month={Dec.}, pages={46–53} }