839 research outputs found
Programs for high-speed Fourier, Mellin and Fourier-Bessel transforms
Several FORTRAN program modules for performing one-dimensional and two-dimensional discrete Fourier transforms, Mellin, and Fourier-Bessel transforms are described along with programs that realize the algebra of high speed Fourier transforms on a computer. The programs can perform numerical harmonic analysis of functions, synthesize complex optical filters on a computer, and model holographic image processing methods
Influence of Primary Cosmic Radiation Mass Composition on the Estimation of Eas Energy
At the Yakutsk EAS array E_em is determined by using measurements of EAS
Cherenkov light flux and charged particle flux. It is known from calculations
that these characteristics depend on a sort of primary particle and, therefore,
the estimation of E_em depends on a primary particle mass. In the work the
dependence of the E_em/E_0 ratio on the energy is given and experimental data
are compared with calculations by the QGSJET model. The calculations have been
carried out for the primary proton and iron nucleus. The average calculated
meaning of the value of E_em/E_0 ratio (between the proton and iron nucleus)
within experimental errors is in agreement with experimental data that doesnt
contradict to the mixed mass composition of primary cosmic radiation.Comment: 19th European Cosmic Ray Symposium. Aug 30 - Sep 3 2004, Florence,
Italy. 3 pages, 1 figure. Subbmitted for publication in International Journal
of Modern Physics
Fluctuations of Xmax and Primary Particle Mass Composition in the Range of Energy 5 10^{17} - 3 10^{19} ev by Yakutsk Data
The experimental distributions of \Xmax obtained with the Yakutsk EAS array
at fixed energies of , and
eV are analysed. A recent version of the QGSJET model is used as a tool of our
analysis. In the framework of this model, the most adequate mass composition of
primary particles satisfying the experimental data on \Xmax is selected.Comment: 19th European Cosmic Ray Symposium, Aug 30 - Sep 3 2004, Florence,
Italy. 3 pages, 1 figure. Submitted for publication in International Journal
of Modern Physics
Measurement of the - mixing angle in and beams with GAMS- Setup
The results of mixing angle measurement for , mesons generated
in charge exchange reactions with and beams are preseneted.
When the , mesons are described in nonstrange(NS)--strange(S)
quark basis the and beams allow to study and
parts of the meson wave function. The cross section ratio at
(GeV/c) in the beam is , results in mixing angle . For
beam the ratio is . It was found that
gluonium content in is . The
experiment was carried out with GAMS-4 Setup.Comment: 6 pages, 4 figures, 1 table, to be submitted in European physical
journal C. Minor changes, the Bibliography extende
A description of a system of programs for mathematically processing on unified series (YeS) computers photographic images of the Earth taken from spacecraft
A description of a batch of programs for the YeS-1040 computer combined into an automated system for processing photo (and video) images of the Earth's surface, taken from spacecraft, is presented. Individual programs with the detailed discussion of the algorithmic and programmatic facilities needed by the user are presented. The basic principles for assembling the system, and the control programs are included. The exchange format within whose framework the cataloging of any programs recommended for the system of processing will be activated in the future is displayed
Muons with E_th >= 1 Gev and Mass Composition in the Energy Range 10^{18}-10^{20} ev Observed by Yakutsk Eas Array
The ratio of the muon flux density to charged particle flux density at
distances of 300 and 600 m from the shower axis (\rhom(300)/\rhos(300) and
\rhom(600)/\rhos(600)) is measured. In addition, the energy dependence of
\rhom(1000) is analysed for showers with energies above eV. A
comparison between the experimental data and calculations performed with the
QGSJET model is given for the cases of primary proton, iron nucleus and gamma-
ray. We conclude that the showers with \E\ge3\times10^{18} eV can be formed
by light nuclei with a pronounced fraction of protons and helium nuclei. It is
not excluded however that a small part of showers with energies above
eV could be initiated by primary gamma-rays.Comment: 19th European Cosmic Ray Symposium, Aug 30 - Sep 3 2004, Florence,
Italy. 3 pages, 1 figure. Submitted for publication in International Journal
of Modern Physics
Fluctuations of development maximum depth and nuclear composition of primary cosmic radiation
The extensive air showers (EAS) cascade curves from the Cerenkov light lateral distribution measurements are recovered and the maximum depth fluctuations of the shower development theta x sub m both on the Cerenkov and charged EAS components are defined. At E sub 0 approximates 10 to the 18th power eV the mean content of protons is greater than 85%, and p-air cross section theta sub 0 p-air 750mb
«Marshall Plan» for Donbass: prerequisites for investment development
The preconditions for restoration and investment development of Donbass according to the international "Marshall Plan" in case of peaceful settlement of armed conflict are determined. Significant advantages of Donbass as an object of the Marshall Plan implementation are shown, in particular, depending on the stages of the peaceful settlement in the Donbass, as well as the directions of investment of the enterprises of the largest cities of Donbas. The proposed estimation of volumes of annual investments, receipt of additional products, possibilities of its immediate consumption is offered.Визначено передумови відновлення й інвестиційного розвитку Донбасу згідно з міжнародним «Планом Маршалла» у разі мирного врегулювання збройного конфлікту. Показано суттєві переваги Донбасу як об’єкту запровадження «плану Маршалла», зокрема, у залежності від етапів мирного врегулювання в Донбасі, а також напрямки інвестування підприємств найбільших міст Донбасу. Запропоновано укрупнену оцінку обсягів щорічних інвестицій, отримання додаткової продукції, можливості її негайного споживання.Определены предпосылки восстановления и инвестиционного развития Донбасса в соответствии с международным «Планом Маршалла» в случае мирного урегулирования вооруженного конфликта. Показаны существенные преимущества Донбасса как объекта осуществления «плана Маршалла», в частности, в зависимости от этапов мирного урегулирования в Донбассе, а также направления инвестирования предприятий крупнейших городов Донбасса. Предложена укрупненная оценка объемов ежегодных инвестиций, получения дополнительной продукции, возможности ее немедленного потребления
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