The article highlights results of the geotechnical analysis of the stress and strain state for the base of a subsoil massif under its interaction with the strip foundations. The massif is represented by loess soils which while soaking give overtime subsidences that complicate the operation of a building or a structure. Through geotechnical iterative research, optimization of the parameters for strip foundations on four axes at a four-storeyed residential building is carried out. Checks are performed on two groups of limiting states for scenarios of soil occurrence in natural, moistened and compacted states. The optimum dimensions in the width of strip foundations are selected, they give approximately the same strain values of the base after the creation of the soil bedding with its layer-bylayer compaction. The relevance of this research is to develop optimal parameters in the design of strip foundations for shallow depth on subsidental loess soils.

Инженер-программист, Запорожский национальный технический университет, Украина АВТОМАТИЗИРОВАННАЯ СИСТЕМА АНАЛИЗА И ИНТЕРПРЕТАЦИИ ЭКГ В статье выполнен обзор существующих программных продуктов для анализа и интерпретации электрокардиосигнала (ЭКГ), предложен алгоритм идентификации ЭКГ, основанный на обнаружении и временной локализации максимумов модуля вейвлетпреобразования, и нейросетевой классификатор кардиоциклов. Разработана программа для анализа и интерпретации ЭКГ. Проведены эксперименты по делинеации сигнала. Исследованию подвергались записи цифровых сигналов ЭКГ базы данных QTDB. Результаты работы предложенного алгоритма сравнивались с опубликованными результатами работы других алгоритмов идентификации ЭКГ. Наиболее существенное улучшение было обнаружено в определении положения P-и Т-волны. Ключевые слова: делинеация ЭКГ, вейвлет-анализ ЭКГ, ключевые точки ЭКГ, максимумы модуля вейвлет-преобразования, нейросетевой классификатор кардиоциклов. ОБЗОР ПРОГРАММ ДЛЯ АНАЛИЗА И ИНТЕР-ПРЕТАЦИИ СИГНАЛА ЭКГ Программное обеспечение имеет основополагающее значение при построении системы электрокардиог

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Purpose. Perform a comparative analysis of drill and injection (jet-grouting) and drill and mixing technologies of micropiles arrangement of weak soil bases with the identification of technological features that significantly effect on the design and calculation of weak soil bases strengthening. Methodology. To solve this problem, was conducted of the detailed analysis of the most effective methods of micropiles arrangement during the strengthening of weak soil bases (physical immersion, bored and packing of concrete, drill and injection of ground, drill and mixing soils and application of special effects). Peculiarities of technological parameters of jet-grouting and drill and mixing technologies are considered in detail. The advantages and disadvantages of each of the technologies are revealed. It is proved that the drill and mixing technology has a greater degree of prediction of the stress-strain state change of the inhomogeneous base. To determine the influence of deformation characteristics, a spatial finite-element model based on a flat prototype was created, which was built using automatic triangulation of the professional calculation complex SCAD. Findings. A significant reduction of the deformed state at an almost constant stress state is obtained. When the deformation characteristic increases by 3 times (the ratio of the modulus of elasticity of the soil cement pile and the weak soil), the vertical displacements of the foundation decrease by 1.23 times. Originality. It consists in obtaining the dependence of the change of vertical displacements and stresses on the modulus of elasticity of the soil cement micropile, created on the basis of drill and mixing technology. Practical value. It consists in the obtained results of comparative analysis of substantiation of micropile installation drill and mixing technology during strengthening of weak soil bases with definition of technological features and choice of drill and mixing as the most effective variant from the point of view of technology realization.

The given work presents the methodology of R-peaks detection in an electrocardiogram signal based on Discrete Wavelet Transformation. The optimal level decomposition of the detail coefficients can be determined by energy, frequency and cross-correlation analyses. The effectiveness of the proposed algorithm has been tested by using records obtained from the MIT/BIH Physionet arrhythmia database.