Showing 2,301 - 2,313 results of 2,313 for search '"experimental"', query time: 0.12s Refine Results
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    Metodología para estimar el coeficiente de heterogeneidad del suelo, el número de repeticiones y el tamaño de parcela en investigaciones con frijol (Phaseolus vulgaris L.) by Blair Matthew, Muñoz Jaime Eduardo, Mayor Durán Víctor Manuel

    Published 2012-03-01
    Subjects: “…Análisis estadísticos, experimentación, heterogeneidad del suelo, investigación de campo, ley de varianza, Phaseolus vulgaris, rendimiento, Experimentation, field research, law of variance, Phaseolus vulgaris, soil heterogeneity, statistical analysis, yie…”
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    INVESTIGATION OF EFFICIENCY OF GRAY CAST IRON GRAPHITIZING MODIFICATION BY DISPERSION-FILLED CONSUMABLE PATTERN by I. A. Nebozhak, V. V. Sumenkova, O. I. Shynsky, V. D. Babyuk, E. A. Zhydkov

    Published 2016-01-01
    Subjects: “…approximation, consumable pattern, graphitizer, graphical interpretation, length of inclusions of flaked graphite, silicon concentration, silicon assimilation quotient, silicon, lost-foam casting (lfc-process), casting mold, casting specimen, mathematical treatment, material, matrix melt, modification, ingot, microstructure parameters, foam polystyrene, pearlite, flaked graphite, polynomial, gray cast iron, hardness, ferrite, ferrosilicon, functional relation, temper of functional relation, cementite, experimental data, empirical equation…”
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  11. 2311

    Contribution of macrophage subpopulations to the pathogenesis of chronic periodontitis in humans and perspectives for study. Review of the literature by V. I. Shynkevych, I. P. Kaidashev

    Published 2019-02-01
    Subjects: “…and to enhance proinflammatory abilities. Experimental depletion of macrophages using clodronate liposomes can prevent the bone resorption. …”
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  12. 2312

    COMPARATIVE RESEARCHES OF FRACTURES OF HIGH-STRENGTH CAST IRON IN THE AS-CAST AND DEFORMED STATE by A. I. Pokrovsky, I. N. Khrol

    Published 2016-01-01
    Subjects: “…the results of comparative studies of fracture surfaces of high-strength cast iron in the as-cast state and after hot direct extrusion through an aperture of a conical die are presented. the shape change of graphite inclusions and components of the metal matrix is examined with increasing the reduction ratio from 0 (as-cast state) to 80%. for the fist time, using the electrochemical etching of the metal matrix of the cast iron, it is demonstrated experimentally that at plastic deformation the ductile flow of graphite inclusions occurs without fracturing of the latter. the surface morphology of a deformed graphite inclusion is revealed. it is shown that inside the inclusion the strain is distributed non-uniformly: the peripheral zones are deformed to a larger extent while the central part may retain its original radial structure. the fact that the most part of graphite inclusions on the fracture surface of the deformed cast iron appeared undamaged (very small amount of fractured inclusions was observed) testifies against the common opinion that graphite acts as a crack nucleation site. a hypothesis is put forward that the crack nucleates in the metal matrix, presumably at the pearlite/ferrite interface, and propagates from one graphite inclusion to another rounding but not damaging the latter.…”
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  13. 2313

    ADVANCED SCHEDULER FOR COOPERATIVE EXECUTION OF THREADS ON MULTI-CORE SYSTEM by O. N. Karasik, A. A. Prihozhy

    Published 2017-05-01
    Subjects: “…three architectures of the cooperative thread scheduler in a multithreaded application that is executed on a multi-core system are considered. architecture a0 is based on the synchronization and scheduling facilities, which are provided by the operating system. architecture a1 introduces a new synchronization primitive and a single queue of the blocked threads in the scheduler, which reduces the interaction activity between the threads and operating system, and significantly speed up the processes of blocking and unblocking the threads. architecture a2 replaces the single queue of blocked threads with dedicated queues, one for each of the synchronizing primitives, extends the number of internal states of the primitive, reduces the inter- dependence of the scheduling threads, and further significantly speeds up the processes of blocking and unblocking the threads. all scheduler architectures are implemented on windows operating systems and based on the user mode scheduling. important experimental results are obtained for multithreaded applications that implement two blocked parallel algorithms of solving the linear algebraic equation systems by the gaussian elimination. the algorithms differ in the way of the data distribution among threads and by the thread synchronization models. the number of threads varied from 32 to 7936. architecture a1 shows the acceleration of up to 8.65% and the architecture a2 shows the acceleration of up to 11.98% compared to a0 architecture for the blocked parallel algorithms computing the triangular form and performing the back substitution. on the back substitution stage of the algorithms, architecture a1 gives the acceleration of up to 125%, and architecture a2 gives the acceleration of up to 413% compared to architecture a0. the experiments clearly show that the proposed architectures, a1 and a2 outperform a0 depending on the number of thread blocking and unblocking operations, which happen during the execution of multi-threaded applications. the conducted computational experiments demonstrate the improvement of parameters of multithreaded applications on a heterogeneous multi-core system due the proposed advanced versions of the thread scheduler.…”
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