50 research outputs found

    Fuzzy algorithm for situational control of urban transport traffic

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    The problem of operational dispatching control of urban transport is considered on the example of fixed-route taxis. The analysis of passenger traffic is carried out on the mathematical apparatus of the theory of queuing systems, within which a graph of states is constructed and ratios are obtained to evaluate the main indicators of the quality of minibus taxis. Due to the presence of information uncertainty in the work of urban transport, an algorithm of fuzzy situational management is proposed, which is the basis of intellectual DSS. For an optimal transition from the current situation to a situation that meets the new operating conditions, in the sense of the selected criterion, it is proposed to use the dynamic programming method

    Recognition of handwritten numbers based on convolutional neural networks

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    This article deals with the problem of practical implementation of handwritten digit recognition based on convolutional neural networks (CNN). The CNN architecture is presented and analyzed, for which it is recommended to use cross entropy as a loss function during training, and the Softmax function as an activation function of the last CNN layer. It is also recommended to use the well-known error back propagation algorithm to implement the CNN learning algorithm. To do this, the article presents the main relations for errors at each layer

    Automation Of Making Innovative Decisions In Development Of City Infrastructure

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    An automated method for evaluating expert questionnaires proposed, in which the questionnaire considered as a linguo-numerical model of the city infrastructure object under study, which makes it possible to present it in a form convenient for automated processing in decision support systems (DSS) based on the proposed procedures

    Stabilization of positioning points in the control system of industrial robots-manipulators

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    To stabilize the position of the grip of the manipulator at the working point of positioning, a modal procedure for optimal adjustment of the parameters of the proportional and differential parts of the multidimensional PID controller based on the original method of uncertain coefficients is proposed. To eliminate the static error, it is suggested to use the Davison method of adjusting the integral part of the PID controller. The proposed approach is universal and can be used to stabilize the modes of operation of other technical objects and technological processes

    ΠžΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ΅ ΡƒΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠ΅ Ρ‚ΠΎΠΏΠ»ΠΈΠ²ΠΎΠΌ Π² систСмС с Π·Π°ΠΏΠ°Π·Π΄Ρ‹Π²Π°Π½ΠΈΠ΅ΠΌ

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    Π ΠΎΠ±ΠΎΡ‚Π° присвячСна ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡ– синтСзу ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управління ΠΏΠ°Π»ΠΈΠ²ΠΎΠΌ Ρƒ систСмі Π· запізнСнням. Завдання ΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½Π΅ ΠΏΠΎ Π»Ρ–Π½Ρ–ΠΉΠ½ΠΈΡ… Ρ–Π½Π²Π°Ρ€Ρ–Π°Π½Ρ‚Π½ΠΈΡ… систСм Π·Π°Π΄Π°Π½ΠΈΡ… управлінням (Π†Π†-1, Π†Π†-2). Π‘ΠΈΠ½Ρ‚Π΅Π· ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управління для Π΄ΠΎΡΠ»Ρ–Π΄ΠΆΡƒΠ²Π°Π»ΡŒΠ½ΠΎΡ— систСми Π²ΠΈΡΠ²Π»ΡΡ”Ρ‚ΡŒΡΡ Π· використанням ΠΌΠ΅Ρ‚ΠΎΠ΄Π° максимум ΠŸΠΎΠ½Ρ‚Ρ€ΡΠ³Ρ–Π½Π°.The paper deals with the synthesis of the fuel-optimal control for the systems with delay in control loop. The considerations are confined to the class of the linear time-invariant systems performed by (II-1, II-2). Synthesis of the optimal control is achieved using the Pontryagin's maximum principle.Π Π°Π±ΠΎΡ‚Π° посвящСна ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ΅ синтСза ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управлСния Ρ‚ΠΎΠΏΠ»ΠΈΠ²ΠΎΠΌ Π² систСмС с Π·Π°ΠΏΠ°Π·Π΄Ρ‹Π²Π°Π½ΠΈΠ΅ΠΌ. Π—Π°Π΄Π°Ρ‡Π° ΠΎΠ³Ρ€Π°Π½ΠΈΡ‡Π΅Π½ΠΎ Π΄ΠΎ Π»ΠΈΠ½Π΅ΠΉΠ½Ρ‹Ρ… ΠΈΠ½Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π½Ρ‹Ρ… систСм Π·Π°Π΄Π°Π½Π½Ρ‹Ρ… ΡƒΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ (II-1, II-2). Π‘ΠΈΠ½Ρ‚Π΅Π· ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управлСния для исслСдуСмой систСмы получаСтся с использованиСм ΠΌΠ΅Ρ‚ΠΎΠ΄Π° максимум ΠŸΠΎΠ½Ρ‚Ρ€ΡΠ³ΠΈΠ½Π°

    Search for double beta decay processes in 106Cd with the help of 106CdWO4 crystal scintillator

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    A search for the double beta processes in 106Cd was carried out at the Gran Sasso National Laboratories of the INFN (Italy) with the help of a 106CdWO4 crystal scintillator (215 g) enriched in 106Cd up to 66%. After 6590 h of data taking, new improved half-life limits on the double beta processes in 106Cd were established at the level of 10^{19}-10^{21} yr; in particular, T_{1/2}(2\nu \epsilon \beta^+) > 2.1 10^{20} yr, T_{1/2}(2\nu 2\beta^+) > 4.3 10^{20} yr, and T_{1/2}(0\nu 2\epsilon) > 1.0 10^{21} yr. The resonant neutrinoless double electron captures to the 2718 keV, 2741 keV and 2748 keV excited states of 106Pd are restricted to T_{1/2}(0\nu 2K) > 4.3 10^{20} yr, T_{1/2}(0\nu KL1) > 9.5 10^{20} yr and T_{1/2}(0\nu KL3) > 4.3 10^{20} yr, respectively (all limits at 90% C.L.). A possible resonant enhancement of the 0\nu 2\epsilon processes is estimated in the framework of the QRPA approach. The radioactive contamination of the 106CdWO4 crystal scintillator is reported.Comment: Minor changes of half-life limits after improving the data analysis; version accepted for publication on Phys. Rev.

    Low background detector with enriched 116CdWO4 crystal scintillators to search for double beta decay of 116Cd

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    A cadmium tungstate crystal boule enriched in 116^{116}Cd to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition of cadmium and the trace contamination of the crystal were estimated by High Resolution Inductively Coupled Plasma Mass-Spectrometry. The crystal scintillators produced from the boule were subjected to characterization that included measurements of transmittance and energy resolution. A low background scintillation detector with two 116^{116}CdWO4_4 crystal scintillators (586 g and 589 g) was developed. The detector was running over 1727 h deep underground at the Gran Sasso National Laboratories of the INFN (Italy), which allowed to estimate the radioactive contamination of the enriched crystal scintillators. The radiopurity of a third 116^{116}CdWO4_4 sample (326 g) was tested with the help of ultra-low background high purity germanium Ξ³\gamma detector. Monte Carlo simulations of double Ξ²\beta processes in 116^{116}Cd were used to estimate the sensitivity of an experiment to search for double Ξ²\beta decay of 116^{116}Cd.Comment: 24 pages, 13 figures, 3 tables, accepted for publication on Journal of Instrumentatio

    Searches for neutrinoless resonant double electron captures at LNGS

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    Several experiments were performed during last years at underground (3600 m w.e.) Laboratori Nazionali del Gran Sasso (LNGS) of the INFN (Italy) to search for resonant 2Ξ΅0Ξ½\varepsilon0\nu captures in 96Ru, 106Cd, 136Ce, 156Dy, 158Dy, 180W, 184Os, 190Pt with the help of HP Ge semiconductor detectors, and ZnWO4 and 106CdWO4 crystal scintillators. No evidence for r-2Ξ΅0Ξ½\varepsilon0\nu decays was found, and only T_{1/2} limits were established in the range of 10^{14}-10^{21} yr.Comment: Proceedings of TAUP 2011 Conferenc

    MΓΆglichkeiten und Grenzen minimal-invasiver Multi-Port-Knochenchirurgie am Beispiel der Otobasis (MUKNO)

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