No abstract

No abstract

Pipelines are structural elements of many systems. For example, they are used in water supply and heat supply systems, in chemical production facilities, aircraft manufacturing, and in the oil and gas industry. Accidents in piping systems result in significant economic damage. An important factor for ensuring the reliability of energy transportation systems is the assessment of real technical conditions of pipelines. Methods for assessing the state of pipeline systems by their vibro-acoustic parameters are widely used today. Traditionally, the Fourier transform is used to process vibration signals. However, as a rule, the oscillations of the pipe-liquid system are non-linear and non-stationary. This reduces the reliability of devices based on the implementation of classical methods of analysis. The authors used neural network methods for the analysis of vibro-signals, which made it possible to increase the reliability of diagnosing pipeline systems. The present work considers a method of neural network analysis of amplitude-frequency measurements in pipelines to identify the presence of a defect and further clarify its variety.

⎯The paper presents statistical data on the state of scientific and innovative activities in the regions of Northwest Russia. The dynamics of their main indicators has been analyzed. Scientific factors that affect the effectiveness of innovative activities have been identified. The values of factors and their connection with the final results by region have been determined. The advisability of developing statistical accounting of process innovations and implementation of scientific potential of the region is noted.

No abstract