Modeling of "groove" rolling defect on internal surface of pipes at lengthwise rolling

The research has been conducted in pipe forming at rolling off by lengthwise rolling mill with stub mandrel; the patterns of change in dimensionless parameters were determined, which characterize deformation in side angle depending on http://www.multitran.ru/c/m.exe?t=424995_2_1elongation ratio. The model of formation of lengthwise groove on internal surface of pipes has been proposed

Electrical discharges in the atmosphere of Venus

Data received from Venera 11 and 12 experiments involving the electrical activity of the atmosphere of Venus show that the electrical discharges occur in the cloud layer. Their energy is roughly the same as in terrestrial lightning, but with a pulse repetition frequency of the discharges which is much greater

The role of customer service in increasing the competitive ability and competitiveness of service organizations

The essence of service and service as a product of the service business, including the core of the service, its customized variants, atmosphere, architecture and contact personnel, has been characterized. It has been found out that customer orientation is a key characteristic of a business in the service sector and reflects a combination of understanding of its strategic vectors, its essential characteristics and the vision of the organization through the eyes of the client (internal - employee and external - consumer). It has been determined that a customer-oriented service consists in focusing attention on the customer, rather than on a product-centered marketing strategy. The components of a successful customer-oriented service have been highlighted, based on the quality of services provided, the level of accompanying service, the range of services provided and the availability of after-sales service. It has been noted that nowadays there is a shift in the relationship between sellers and buyers from onetime transactions to long-term partnership relations

COMPARATIVE ANALYSIS OF THE CONCEPTS OF «COMPETITIVE STABILITY» AND «COMPETITIVENESS» OF SERVICE ORGANIZATIONS

A comparative analysis of the categories, that form the concepts of competitiveness and competitive stability in relation to the organization of the services sector, has been conducted. The main approaches to the definition of categories and concepts, such as «competitive position», «competitive status», «competitive potential», «competitive advantages» have been analyzed. Their clarifications regarding the organizations of the service sector have been made. Based on the conducted comparative analysis, the concept of competitive advantages has been formulated as a basis for the formation of competitiveness and potential competitive stability of the organization of the services sector

Kids football coach`s type as a determining factor of child-footballer`s development

this article provides an author`s classification of basic types of kids football coaches and the conclusion about suitability of certain types of coaches to certain age groups of childrenВ данной статье приведена авторская классификация базовых типов детских футбольных тренеров и сделан вывод о предпочитаемом соответствии данных типов возрастной группе занимающихся дете

INTERNET TECHNOLOGIES AS A FACTOR OF INCREASING THE COMPETITIVENESS AND COMPETITIVE STABILITY OF SERVICE ORGANIZATIONS

Presently, the use of Internet technologies is an absolute advantage on the way to the successful functioning of an enterprise in any sphere of economy. The increasing unpredictability of the external environment, the variability of consumer preferences are increasingly transforming competition in the markets of goods and services, from the industrial to the information plane. Under such conditions, the role of internal factors of enterprise competitiveness increases. In recent decades, the introduction of such technologies in service enterprises has become increasingly widespread, ranging from simple tools (e-mail or messengers) to global introduction in the business structure ( using electronic commerce or creating virtual enterprises). We are not even talking about the newest complex developments in the field of Internet technologies, but about the use of existing and simpler ones, which are increasingly used by enterprises. The basic directions of application of Internet technologies and advantages which a business entity in the service sector receives from it have been considered in the article

Dynamics of the Free Surface of a Conducting Liquid in a Near-Critical Electric Field

Near-critical behavior of the free surface of an ideally conducting liquid in an external electric field is considered. Based on an analysis of three-wave processes using the method of integral estimations, sufficient criteria for hard instability of a planar surface are formulated. It is shown that the higher-order nonlinearities do not saturate the instability, for which reason the growth of disturbances has an explosive character.Comment: 19 page

Experimental characterization of anomalous strong scattering of mm-waves in TEXTOR plasmas with rotating islands

Anomalous scattering of high power millimetre waves from gyrotrons at 140 and 110 GHz is investigated for plasma with rotating islands at TEXTOR. The magnetic field and plasma density influence the spectral content of the scattered waves and their power levels significantly. Anomalous strong scattering occurs in two density regimes, one at low densities and one at high densities, that also depend on the magnetic field. The two regimes are separated by a quiescent regime without anomalous scattering. Investigations suggest that scattering in the high-density regime is generated at the low-field side intersection of the gyrotron beam and the island position. The transition from the quiescent regime to the high-density regime occurs when the gyrotron frequency is twice the upper hybrid frequency at this position. There is some evidence that the scattering in the low-density regime is generated near the plasma centre. Under this assumption all the observed scattering is generated when the gyrotron frequency is near or below twice the upper hybrid frequency

Development Of Software–Hardware System for Real Time Simulation of Electric Power System with Smart Grids

The design and research of electric power system (EPS) with smart grids (SG), which are the current world trend of modern electric power industry, requires solving a large number of non-trivial tasks. The developed technical solutions and used equipment are novel for the world practice. Therefore, their implementation requires carefulanalysis and an individual approach to research that provides an assessment of the impact of new network elements on the power system. All of this puts requirements on the tools and methods of research used to solve such problems. At present, digital systems for modelling EPS with SG based on the application of numerical methods are used as such tools. However, despite the high level of these developments, it has drawbacks. The use of incomplete and invalid information obtained by digital tools can lead to the wrong design and operational decision in real power system, which can cause blackouts. The alternative approach for solving the problem of detailed simulation of EPS with SG is the creation of hybrid system based on the principle of combining different modelling methods. Hybrid Real-Time Power System Simulator (HRTSim) is developed based on this approach and presented in the paper