2,740 research outputs found
Integrability of the symmetry reduced bosonic dynamics and soliton generating transformations in the low energy heterotic string effective theory
Integrable structure of the symmetry reduced dynamics of massless bosonic
sector of the heterotic string effective action is presented. For string
background equations that govern in the space-time of dimensions ()
the dynamics of interacting gravitational, dilaton, antisymmetric tensor and
any number of Abelian vector gauge fields, all depending only on two
coordinates, we construct an \emph{equivalent} matrix
spectral problem (). This spectral problem provides the base for the
development of various solution constructing procedures (dressing
transformations, integral equation methods). For the case of the absence of
Abelian gauge fields, we present the soliton generating transformations of any
background with interacting gravitational, dilaton and the second rank
antisymmetric tensor fields. This new soliton generating procedure is available
for constructing of various types of field configurations including stationary
axisymmetric fields, interacting plane, cylindrical or some other types of
waves and cosmological solutions.Comment: 4 pages; added new section on Belinski-Zakharov solitons and new
expressions for calculation of the conformal factor; corrected typo
Pозробка методу контролю елементів конструкції планеру повітряних суден в умовах експлуатації
The paper proposes to use a method of infrared pulse-echo inspection to control airframe designelements, made of polymeric composite materials under operators` conditions. The following is described:skeleton operation diagram of the given method, device structure and results of the preliminary researchesconfirming operation capacity of the method offeredПредложено использовать инфракрасный эхо-импульсный метод для контроля элементов конструкции планера, изготовленного из полимерных композицитных материаловЗапропоновано використовувати інфрачервоний ехо-імпульсний метод для контролю елементів конструкціїпланера, виготовленого з полімерних композитних матеріалі
Accuracy of one-dimensional collision integral in the rigid spheres approximation
The accuracy of calculation of spectral line shapes in one-dimensional
approximation is studied analytically in several limiting cases for arbitrary
collision kernel and numerically in the rigid spheres model. It is shown that
the deviation of the line profile is maximal in the center of the line in case
of large perturber mass and intermediate values of collision frequency. For
moderate masses of buffer molecules the error of one-dimensional approximation
is found not to exceed 5%.Comment: LaTeX, 24 pages, 8 figure
New Occurrences of Anomalous Specimens of Anuran Amphibians in Northwest Upper Poochye
New data about anomalous amphibian specimens in northwest Upper Poochye are provided. We found anomalies like anophthalmia, dyscoria, corectopia and abnormal patterns
Laser in the axial electric field as a tool to search for P-, T- invariance violation
We consider rotation of polarization plane of the laser light when a gas
laser is placed in a longitudinal electric field (10~kV/cm). It is shown that
residual anisotropy of the laser cavity 10^{-6} and the sensitivity to the
angle of polarization plane rotation about 10^{-11} -10^{-12} rad allows one to
measure an electron EDM with the sensitivity about 10^{-30} e cm.Comment: 12 page
Form factors in the Bullough-Dodd related models: The Ising model in a magnetic field
We consider particular modification of the free-field representation of the
form factors in the Bullough-Dodd model. The two-particles minimal form factors
are excluded from the construction. As a consequence, we obtain convenient
representation for the multi-particle form factors, establish recurrence
relations between them and study their properties. The proposed construction is
used to obtain the free-field representation of the lightest particles form
factors in the perturbed minimal models. As a significant example
we consider the Ising model in a magnetic field. We check that the results
obtained in the framework of the proposed free-field representation are in
agreement with the corresponding results obtained by solving the bootstrap
equations.Comment: 20 pages; v2: some misprints, textual inaccuracies and references
corrected; some references and remarks adde
Integration of corporate technological foresight into the technological development management system in companies of oil and gas sector
The experience of leading multinational players in conducting corporate technological foresight shows that the key to its successful implementation is effective integration with the existing corporate strategic planning system.The issue of identifying the most important and necessary measures for integrating foresight into the corporate governance system of oil and gas companies has been considered in the article. The elements of the corporate management system with which it is necessary to build interrelation and description of options for strategies, have been presented, recommendations for conducting foresight for each of them have been given. It has been noted, that the use of foresight research has a significant impact on the effectiveness of individual projects and on the efficiency of companies' activity as a whole.The results obtained have showed that the effectiveness of the results of foresight directly depends on the company’s readiness to conduct it and the level of maturity of scientific and technical processes of innovative development of the company. The directions of the company’s management system, that have a particularly strong impact on the effectiveness of the results of foresight research have been highlighted, as well as methods for assessing the company’s readiness to conduct foresight have been proposed. An assessment of the options for applying foresight research depending on the company’s chosen model of innovative development and innovative development program has been given. It has been noted, that the greatest effect is achieved with a proactive management model that allows you to fully use the tools of foresight research, resulting forecasts. Using foresight for active and passive models doesn't give any advantages for the company, it leads to additional costs. The relationship between foresight and the most common organizational management structures, currently used in Russian oil and gas companies, has been shown
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