Improved numerical methods in reliability analysis of suspension roof joints

On the basis of comparative analysis of approaches to the study of organizational communications developed a method of their diagnosis, consisting in determining the composition of the characteristics of the communication system of the enterprise, specialized methods for measuring and assessing the magnitude of critical deviations, and the research algorithm. Specifics of the considered strategic diagnostics consist in the accounting of resources and abilities of the organizational communications considered as complete set of external and internal communications. The resulting tools are used in decision-making procedures on the directions of development of the communication component of the strategic potential of the production enterprise. The tendency of alignment of the importance of communications supporting organizational changes with resource-providing communications with the increasing turbulence of the external environment is established, which increases the importance of internal communications for modern enterprises, including the distribution of budgets for the development of communications.

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Algorithm and methodology of diagnostics of communication system of the enterprise

Kravets

2019

“…The level of air pollution in Saint-Petersburg is determined by emissions of pollutants into the air from stationary and mobile sources [11,[13][14][15]. The greatest contribution (85%) to air pollution is made by road transport.…”

Section: Air Quality In Saint-petersburgmentioning

confidence: 99%

Control of air pollution caused by vehicular emissions

Gumerova

Gamayunova

2018

Dispersion of air pollutants is caused often by vehicular emissions. It is necessary to define correctly parameters, which influence on emissions. In this article analysis of the parameters and calculations of Saint-Petersburg roads are shown. According to results, measures to improve the air state are defined. Solving of this ecological problem is implementation of development programs of urban public transport, the use of fuel with improved environmental characteristics, the development of electric modes of transport, traffic management methods to increase the capacity of the road and road network in the city.

“…For example, the fire effect significantly changes the parameters of creep of concrete [7], thermo-stressed state in massive concrete structures in a fire is equivalent to that arising during setting of concrete [8], which causes cracks formations. In this way, the design of fire protection is a mandatory requirement in the design of structures [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Increase of fire resistance of reinforced concrete structures with polypropylene microfiber

Gravit

Golub

2018

The increase in the construction of high-rise, technically complex buildings and structures is a prerequisite for the widespread use of structures of heavy concrete. In this work, a special type of destruction of this type of concrete is considered in the fire action explosive spalling. One method of protection is polypropylene microfiber, the objective of which is to increase the fire resistance of concrete and reinforced concrete structures. The fire resistance tests of the reinforced concrete structure with the use of microfiber and without it have been carried out. It is shown that polypropylene microfiber can completely prevent explosive spelling of concrete. In addition, the introduction of additives in the form of fibrous materials into the concrete mix is the most optimal from the point of view of labor intensity and material costs.