503 research outputs found

    Distributivity breaking and macroscopic quantum games

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    Examples of games between two partners with mixed strategies, calculated by the use of the probability amplitude as some vector in Hilbert space are given. The games are macroscopic, no microscopic quantum agent is supposed. The reason for the use of the quantum formalism is in breaking of the distributivity property for the lattice of yes-no questions arising due to the special rules of games. The rules of the games suppose two parts: the preparation and measurement. In the first part due to use of the quantum logical orthocomplemented non-distributive lattice the partners freely choose the wave functions as descriptions of their strategies. The second part consists of classical games described by Boolean sublattices of the initial non-Boolean lattice with same strategies which were chosen in the first part. Examples of games for spin one half are given. New Nash equilibria are found for some cases. Heisenberg uncertainty relations without the Planck constant are written for the "spin one half game"

    The question of design online store website

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    The article deals with the essence of the Internet shop, the purpose of its creation. We study the content management system, its key objectives, the advantages of the selected CMS-system. Highlights of the development of the site, particularly the creationВ статье рассматривается сущность Интернет - магазина, цель его создания. Исследуется система управления контентом, ключевые ее задачи, преимущества выбранной CMS-системы. Основные моменты разработки Сайта, особенности создани

    СОВЕРШЕНСТВОВАНИЕ АЛГОРИТМА РАСЧЕТА СЛОЖНЫХ НЕЭКВИПОТЕНЦИАЛЬНЫХ ЗАЗЕМЛЯЮЩИХ УСТРОЙСТВ ЭЛЕКТРОУСТАНОВОК С УЧЕТОМ ПРОВОДИМОСТИ ЕСТЕСТВЕННЫХ ЗАЗЕМЛИТЕЛЕЙ

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    Purpose. The method of natural concentrated groundings substitution by the set of electrodes taking them into account in the algorithm of electric characteristics calculation for complicated grounding connections of electric installation is offered. An equivalent model as a set of linear electrodes is chosen in accordance with two criteria: leakage resistance and potentials on the ground surface. Methodology. We have applied induced potential method and methods for computing branched electrical circuits with distributed parameters. Results. We have obtained the algorithm for calculating complex non-equipotential grounding connections, which makes it possible to obtain refined values of the potential distribution in the electric stations and substations with outdoor switchgear. Originality. For the first time, we have taking into account the conductivity of natural concentrated grounds by a set of vertical and horizontal electrodes based on equivalent electrical characteristics applied to a two-layer ground. Practical value. The using of the proposed calculation algorithm in the electric grids of JSC «Kharkivoblenergo» made it possible to determine the values of the potential distribution at short circuit in electrical substation taking into account the influence of the conductivity of natural concentrated groundings.Цель. Целью статьи является разработка алгоритма расчета электрических характеристик неэквипотенциальных заземляющих устройств электроустановок с учетом большого числа естественных сосредоточенных заземлителей, а также собственных активных и реактивных сопротивлений горизонтальных заземлителей. Методика. Проведены теоретические исследования с использованием метода наведенных потенциалов, методов конечных разностей для расчета электрического поля простых заземлителей в земле с двухслойной структурой и последовательного применения метода наведенных потенциалов и методов расчета разветвленных электрических цепей с распределенными параметрами. Результаты. Получен алгоритм расчета сложных неэквипотенциальных заземляющих устройств, позволяющий получить уточненные значения распределения потенциала на территории электроустановки. Научная новизна. Новые положения, по сравнению с известными решениями, состоят в учете проводимости естественных сосредоточенных заземлителей совокупностью вертикальных и горизонтальных электродов, обоснованной по равнозначным электрическим характеристикам применительно к двухслойной модели электрической структуры земли. Практическое значение. Использование предложенного алгоритма расчёта в электрических сетях АК «Харьковоблэнерго» позволили определить значения распределения потенциалов при КЗ на электрической подстанции с учетом влияния проводимости естественных сосредоточенных заземлителей. Скорректированные таким образом результаты расчета дадут более точную информацию о величинах нормируемых параметров по заземляющим устройствам действующих электроустановок. С помощью предложенного алгоритма могут быть получены уточненные значения падения напряжений по заземляющим устройствам при КЗ, а, следовательно, рассчитаны напряжения, воздействующие на изоляцию кабелей вторичных цепей, – параметры, нормируемые по условиям электромагнитной совместимости

    The effect of different baryons impurities

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    We demonstrate the different effect of different baryons impurities on the static properties of nuclei within the framework of the relativistic mean-field model. Systematic calculations show that Λc+\Lambda_c^+ and Λb\Lambda_b has the same attracting role as Λ\Lambda hyperon does in lighter hypernuclei. Ξ\Xi^- and Ξc0\Xi_c^0 hyperon has the attracting role only for the protons distribution, and has a repulsive role for the neutrons distribution. On the contrary, Ξ0\Xi^0 and Ξc+\Xi^+_c hyperon attracts surrounding neutrons and reveals a repulsive force to the protons. We find that the different effect of different baryons impurities on the nuclear core is due to the different third component of their isospin.Comment: 9 page

    The effects of the small t properties of hadronic scattering amplitude on the determination its real part

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    Taking into account the different forms of the Coulomb-hadron interference phase and the possible spin-flip contribution the new analysis of the experimental data of the proton-antiproton elastic scattering at 3.8<pL<6.0 3.8 < p_L <6.0 \ GeV/c and small momentum transfer is carried out. It is shown that the size of the spin-flip amplitude can be determined from the form of the differential cross sections at small tt, and the deviation of ρ(s,t)\rho(s,t) obtained from the examined experimental data of the ppˉp\bar{p} scattering from the analysis \cite{Kroll}, based on the dispersion relations, is conserved in all xamined assumptions. The analysis of the proton-proton elastic scattering at 9<pL<70 9 < p_L < 70 \ GeV/c also shows the impact of the examined effects on the form of the differential cross sections.Comment: 13 pages, 3 figure

    Theoretical aspects of it consulting: problems and prospects

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    This article discusses the theoretical aspects of IT consulting - its problems and prospects. Today it is difficult to imagine a really successful business, which would not have resorted to consulting services. IT consulting helps to solve most of the problems that arise during the conduct of business. The article gives the definition, historical background, see the formation of consulting in Russia and abroadВ данной статье рассматриваются теоретические аспекты ИТ - консалтинга - его проблемы и перспективы. На сегодняшний день трудно представить себе по-настоящему успешный бизнес, который бы не прибегал к услугам консалтинга. ИТ - консалтинг помогает решить большинство проблем, которые возникают во время ведения бизнеса. В статье даны определения, приведена историческая справка становления консалтинга в России и за рубежо

    Pion and Kaon Polarizabilities and Radiative Transitions

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    CERN COMPASS plans measurements of gamma-pi and gamma-K interactions using 50-280 GeV pion (kaon) beams and a virtual photon target. Pion (kaon) polarizabilities and radiative transitions will be measured via Primakoff effect reactions such as pi+gamma->pi'+gamma and pi+gamma->meson. The former can test a precise prediction of chiral symmetry; the latter for pi+gamma->a1(1260) is important for understanding the polarizability. The radiative transition of a pion to a low mass two-pion system, pi+gamma->pi+pi0, can also be studied to measure the chiral anomaly amplitude F(3pi) (characterizing gamma->3pi), arising from the effective Chiral Lagrangian. We review here the motivation for the above physics program. We describe the beam, target, detector, and trigger requirements for these experiments. We also describe FNAL SELEX attempts to study related physics via the interaction of 600 GeV pions with target electrons. Data analysis in progress aims to identify the reactions pi+e->pi'+e'+pi0 related to the chiral anomaly, and pi+e->pi'+e'+gamma related to pion polarizabilities.Comment: 16 pages, 6 figures, Latex Springer-Verlag style Tel Aviv U. Preprint TAUP-2469-97, Contribution to the Workshop on Chiral Dynamics Theory and Experiment, U. of Mainz, Sept. 1-5, 1997, to be published in Springer-Verlag, Eds. A. Bernstein, Th. Walcher, 199

    Probability amplitude in quantum like games

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    Examples of games between two partners with mixed strategies, calculated by the use of the probability amplitude are given. The first game is described by the quantum formalism of spin one half system for which two noncommuting observables are measured. The second game corresponds to the spin one case. Quantum logical orthocomplemented nondistributive lattices for these two games are presented. Interference terms for the probability amplitudes are analyzed by using so called contextual approach to probability (in the von Mises frequency approach). We underline that our games are not based on using of some microscopic systems. The whole scenario is macroscopic.Comment: Quantum-like model
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