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The question-answering systems were being investigated for several decades, but the majority of researches were carried out in English. The subject of this paper is the knowledge-based question-answering system. The unique mathematical model describes the process of answering when the question is presented in Russian as a natural language. The model is executed by mapping the question to the existing...
We consider the problem of motion of a rotationally symmetric ellipsoid on a fixed perfectly rough plane. Using the Kovacic algorithm we found several cases when equations of motion of the ellipsoid can be completely solved in quadratures with the additional restrictions on the parameters of the ellipsoid — its semiaxes and moments of inertia.
We report on the measurement of pulse shape, gain, leakage current, and photon detection efficiency in 4-9 mm2 state-of-the-art silicon photomultipliers (SiPMs) obtained recently from the Center of Perspective Technology and Apparatus (CPTA) in Russia, Center for Scientific and Technological Research (ITC-irst) in Italy, and Hamamatsu Corporation in Japan. The CPTA and IRST SiPMs were used to read...
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