55 research outputs found

    Asset Price Dynamics with Local Interactions under Heterogeneous Beliefs

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    This paper investigates the effect of network structure on the asset price dynamics. We propose a simple present value discounted asset pricing model with heterogeneous agents. Every period the agents choose a predictor of the future price on the basis of past performance of their own and alternative strategies and form their demands for a risky asset. The information about the performance of an alternative strategy is available only locally from the directly connected agents. Using the rewiring procedure we produce four types of commonly considered networks: a fully connected network, a regular lattice, a small world, and a random network. The results show that the network structure influences asset price dynamics in terms of the region of stability and volatility. This is mostly due to the different speed of information transmission in the different networks.

    Accelerating structure for high-gradient accelerator

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    The conventional TW-mode accelerating structures are usually used for high gradient linacs. But these structures grow old quickly during running. It is very serious problem for creation next linear colliders [1]. In this article brief review of defects TW-mode accelerators is presented, and circuit of an accelerator on the basis of a parallel coupled cavity structure, in which accelerating resonators fed parallel from a few waveguides, is offered

    Jones matrix mapping of polycrystalline networks of layers of main types of amino acids

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    The given data on the optical arrangement, in which the coordinate distributions of the real and imaginary component of the elements of the Jones matrix of optically thin polycrystalline layers are determined. Algorithms are presented and an experimental method for measuring the real and imaginary component of Jones-matrix images is analyzed. The experimental results of the study of statistical, correlation, and fractal parameters, which characterize the real component of the Jones-matrix image of polycrystalline networks of flat layers of the main types of human amino acids, are presented

    Dynamic models of production activity planning in projects for the development of new products

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    РассмотрСны динамичСскиС ΠΌΠΎΠ΄Π΅Π»ΠΈ планирования ΠΎΠ±ΡŠΡ‘ΠΌΠΎΠ² производства Π² ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π°Ρ… освоСния Π½ΠΎΠ²ΠΎΠΉ ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ Π½Π° ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΠΌ прСдприятии. Π’ процСссС освоСния Π½ΠΎΠ²ΠΎΠΉ ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ проявляСтся эффСкт обучСния, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ ΠΏΡ€ΠΈΠ²ΠΎΠ΄ΠΈΡ‚ ΠΊ ΡƒΠΌΠ΅Π½ΡŒΡˆΠ΅Π½ΠΈΡŽ трудоСмкости Π² зависимости ΠΎΡ‚ кумулятивного объСма производства. ΠŸΡ€ΠΎΠ±Π»Π΅ΠΌΠ° динамичСского планирования производствСнной Π΄Π΅ΡΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ матСматичСски формализуСтся ΠΊΠ°ΠΊ Π·Π°Π΄Π°Ρ‡Π° ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управлСния производствСнной систСмой. Π Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ Π΄Π²Π° Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π° управлСния ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΎΠ½Π½ΠΎ-тСхничСской систСмой: Π² дискрСтном ΠΈ Π½Π΅ΠΏΡ€Π΅Ρ€Ρ‹Π²Π½ΠΎΠΌ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ. Π”ΠΈΠ½Π°ΠΌΠΈΠΊΠ° измСнСния систСмы описываСтся дискрСтным ΠΈ ΠΎΠ±Ρ‹ΠΊΠ½ΠΎΠ²Π΅Π½Π½Ρ‹ΠΌ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½Ρ‹ΠΌ уравнСниями. Для Π½Π΅ΠΏΡ€Π΅Ρ€Ρ‹Π²Π½ΠΎΠΉ Π·Π°Π΄Π°Ρ‡ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½ΠΎ аналитичСскоС Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΏΡ€ΠΈΠ½Ρ†ΠΈΠΏΠ° максимума ΠŸΠΎΠ½Ρ‚Ρ€ΡΠ³ΠΈΠ½Π°.//Dynamic models of production volume planning in the projects of development of new products at the industrial enterprise are considered. In the process of developing new products, the learning effect manifests itself, which leads to a reduction in labor intensity, depending on the cumulative volume of production. The dynamic planning problem of the production is formalized mathematically as a task of optimal control of the production system. Two variants of managing the organizational and technical system are considered: in discrete and continuous time. The dynamics of the system change is described by discrete and ordinary differential equations. For the continuous problem, an analytic solution is obtained using the Pontryagin maximum principle.ИсслСдованиС Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΡ€ΠΈ финансовой ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΊΠ΅ РЀЀИ ΠΈ Бамарской области Π² Ρ€Π°ΠΌΠΊΠ°Ρ… Π½Π°ΡƒΡ‡Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° No 17-46-630606

    Dynamic game task of executors incentives in projects for the development of new production in continuous time

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    Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ рассматриваСтся Π·Π°Π΄Π°Ρ‡Π° стимулирования исполнитСлСй ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° ΠΏΠΎ освоСнию Π½ΠΎΠ²ΠΎΠΈΜ† ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ Π½Π° ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΠΌ прСдприятии Π² Π½Π΅ΠΏΡ€Π΅Ρ€Ρ‹Π²Π½ΠΎΠΌ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ. Π’ процСссС освоСния Π½ΠΎΠ²ΠΎΠΈΜ† ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ проявляСтся эффСкт ΠΊΡ€ΠΈΠ²ΠΎΠΈΜ† обучСния, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΈΜ† ΠΏΡ€ΠΈΠ²ΠΎΠ΄ΠΈΡ‚ ΠΊ ΡƒΠΌΠ΅Π½ΡŒΡˆΠ΅Π½ΠΈΡŽ трудоСмкости ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ Π² зависимости ΠΎΡ‚ кумулятивного объСма производства. ΠŸΡ€ΠΎΠ΅ΠΊΡ‚ освоСния Π½ΠΎΠ²ΠΎΠΈΜ† ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ рассматриваСтся ΠΊΠ°ΠΊ управляСмая иСрархичСская динамичСская систСма, состоящая ΠΈΠ· руководства ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° (Ρ†Π΅Π½Ρ‚Ρ€Π°) ΠΈ исполнитСлСй (Π°Π³Π΅Π½Ρ‚ΠΎΠ²). ВзаимодСйствиС участников ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° формализуСтся ΠΊΠ°ΠΊ иСрархичСская Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½Π°Ρ ΠΈΠ³Ρ€Π°. Для Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ сформулированной динамичСской Π·Π°Π΄Π°Ρ‡ΠΈ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ стимулирования примСнялся извСстный ΠΏΡ€ΠΈΠ½Ρ†ΠΈΠΏ компСнсации Π·Π°Ρ‚Ρ€Π°Ρ‚. Π˜ΡΡ…ΠΎΠ΄Π½Π°Ρ Π·Π°Π΄Π°Ρ‡Π° раздСляСтся Π½Π° Π·Π°Π΄Π°Ρ‡Ρƒ согласованного стимулирования ΠΈ Π·Π°Π΄Π°Ρ‡Ρƒ согласованного планирования. Π’ исслСдовании ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, Ρ‡Ρ‚ΠΎ Π·Π°Π΄Π°Ρ‡Π° согласованного динамичСского планирования состоит Π² ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠΈ Ρ†Π΅Π½Ρ‚Ρ€ΠΎΠΌ ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΏΠ»Π°Π½ΠΎΠ²Ρ‹Ρ… объСмов производства с Ρ†Π΅Π»ΡŒΡŽ ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ‚Ρ€ΡƒΠ΄ΠΎΠ²Ρ‹Ρ… Π·Π°Ρ‚Ρ€Π°Ρ‚ Π°Π³Π΅Π½Ρ‚ΠΎΠ². Π˜ΡΡ…ΠΎΠ΄Π½Π°Ρ динамичСская Π·Π°Π΄Π°Ρ‡Π° ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ стимулирования Π±Ρ‹Π»Π° свСдСна ΠΊ Π·Π°Π΄Π°Ρ‡Π΅ ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управлСния. Π—Π°Π΄Π°Ρ‡Π° ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ управлСния с Π½Π΅ΠΏΡ€Π΅Ρ€Ρ‹Π²Π½Ρ‹ΠΌ Π²Ρ€Π΅ΠΌΠ΅Π½Π΅ΠΌ Π±Ρ‹Π»Π° Ρ€Π΅ΡˆΠ΅Π½Π° аналитичСски с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΏΡ€ΠΈΠ½Ρ†ΠΈΠΏΠ° максимума ΠŸΠΎΠ½Ρ‚Ρ€ΡΠ³ΠΈΠ½Π°. Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠ³ΠΎ исслСдования Π½Π°ΠΈΜ†Π΄Π΅Π½ΠΎ условиС опрСдСлСния ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… объСмов производства, ΡΠΎΠ³Π»Π°ΡΡƒΡŽΡ‰ΠΈΡ… интСрСсы Ρ†Π΅Π½Ρ‚Ρ€Π° ΠΈ Π°Π³Π΅Π½Ρ‚ΠΎΠ².ИсслСдованиС Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΡ€ΠΈ финансовой ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΊΠ΅ РЀЀИ ΠΈ Бамарской области Π² Ρ€Π°ΠΌΠΊΠ°Ρ… Π½Π°ΡƒΡ‡Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° No 17-46-630606

    Wavelet-analysis of gastric microcirculation in rats with ulcer bleedings

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    Nitric oxide (NO) plays an important role in regulation of central and peripheral circulation in normal state and during hemorrhagic stress. Because the impaired gastric mucosal blood flow is the major cause of gastroduodenal lesions including ulcer bleeding (UB), we study in this work the NO-ergic mechanism responsible for regulation of this blood flow. Our study is performed in rats with a model of stress-induced UB using laser Doppler flowmetry (LDF) that characterizes the rate of blood flow by measuring a Doppler shift of the laser beam scattered by the moving red blood cells. Numerical analysis of LDF-data is based on the discrete wavelet-transform (DWT) using Daubechies wavelets aiming to quantify influences of NO on the gastric microcirculation. We show that the stress-induced UB is associated with an increased level of NO in the gastric tissue and a stronger vascular sensitivity to pharmacological modulation of NO-production by L-NAME. We demonstrate that wavelet-based analyses of NO-dependent regulation of gastric microcirculation can provide an effective endoscopic diagnostics of a risk of UB
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