Ultra-Wideband Five-Tier LM-mode Filters Optimized with knowledge-based CAD system

An original knowledge-based CAD system for step-by-step automated development offive-tier filters base don wave guide-dielectric resonators with the lowest LM-modes has been proposed. The basic idea of the system created consists in physical analysis of signals passing through the filter, which is performed on the basis of a known solution for electrodynamic problem of scattering of fundamental electromagnetic waves in a multi-tier structure. Regularities in formation of the filter ultra-wide bandwidths and formalized them in the form of production rules for the system were discovered. A comparative analysis of frequency responses for three- and five-tier UWB filters, optimized with the system has been also provided. The designed filters are intended for the next generation of millimeter waveband wireless systems and conform to the latest standards like ECMA-387, WirelessHD, IEEE 802.15.3c and IEEE 802.11ad.Предложена оригинальная САПР последовательного проектирования пятизвенных фильтров на основе волноводно-диэлектрических резонаторов с низшими LM-модами. Ключевая идея разработанной системы заключается в физическом анализе сигнала прошедшего через фильтр, который рассчитывается на основе известного решения электродинамической задачи рассеяния основной волны на многозвенной структуре. Установлены закономерности формирования ультрашироких полос пропускания фильтров, которые формализованы в виде логических продукций. Проведен сравнительный анализ АЧХ трех- и пятизвенных ультрашироких фильтров, сконструированных системой. Параметры фильтров отвечают новому поколению радиотелекоммуникационных систем миллиметрового диапазона соответствующих новейшим стандартам ECMA-387, WirelessHD, IEEE 802.15.3candIEEE 802.11ad

Intellectual CAD of mm waves WDR filters with increased stop band attenuation

Physical principles of the original intellectual CAD development for three-tier WDR filters with increased stop band attenuation are presented in the article. The electrodynamic parameters of the partly filled resonators with quasi-H101 and quasi- H102 eigenmodes, which influencing on their frequency separation are analysed. The results of filters designing, proper to the recent standards ECMA-387, WirelessHD, IEEE 802.15.3c, IEEE 802.11ad, are presentedУ статті викладено фізичні принципи розробки оригінальної інтелектуальної САПР триланкових ХДР-фільтрів з розширеною областю позасмугового затухання. Проаналізовано електродинамічні параметри частково заповнених резонаторів з квазі- H101 - і квазі H102 модами, які впливають на їх взаємну частотну відстань. Результати конструювання фільтрів відповідають новітнім стандартам ECMA-387, WirelessHD, IEEE 802.15.3c, IEEE 802.11a

Lithium and its isotopic ratio 6Li/7Li in the atmospheres of some sharp-lined roAp star

The lines of lithium at 6708 A, and 6103 A, are analyzed in high resolution spectra of some sharp-lined and slowly rotating roAp stars. Three spectral synthesis codes - STARSP, ZEEMAN2 and SYNTHM were used. New lines of the rare earth elements from the DREAM database, and lines calculated on the basis of the NIST energy levels were included. Magnetic splitting and other line broadening processes were taken into account. Enhanced abundances of lithium in the atmospheres of the stars studied are obtained for both the lithium lines. High estimates of 6Li/7Li ratio (0.2 -- 0.5) for the studied star can be explained by Galactic Cosmic Ray (GCR) production through the spallation reactions and the preservation of the original $^6$Li and $^7$Li by the strong magnetic fields.Comment: 5 pages, 2*5 figs, submitted for IAUS #224 Proceeding

Prospects for the Bc Studies at LHCb

We discuss the motivations and perspectives for the studies of the mesons of the (bc) family at LHCb. The description of production and decays at LHC energies is given in details. The event yields, detection efficiencies, and background conditions for several Bc decay modes at LHCb are estimated.Comment: 20 pages, 5 eps-figure

ANALYSIS OF THE BEST PRACTICES OF IMPLEMENTING LEAN PROJECT AND PROGRAM MANAGEMENT TECHNOLOGIES IN RUSSIA

This article considers the principles and tools of lean management. The paper gives practical examples of the implementation of the concept of lean production in large Russian organizations, in state and municipal institutions. The analysis showed that there are many opportunities for improving operational and project activities that justify the introduction of a lean approach in organizations. The problems in understanding the need for lean production arise since people are generally reluctant to change established processes, but positive follow-up examples contribute to the success of implementing lean management and help in developing adequate development strategies for companies and government agencies