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Personal profile

Research interests

  • Asymptotic and numerical methods for solving differential equations;
  • The method of matched asymptotic expansions;
  • Bisingular problems for the systems of differential equations containing a small parameter;
  • Application of the catastrophe theory to the study of solutions of differential equations
  • Interpretation of electromagnetic and seismic monitoring data.

Education/Academic qualification

Mathematics and Physics, Candidate

5 May 2014 → …

Fingerprint Dive into the research topics where Олег Юрьевич Хачай is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 2 Similar Profiles
rock Earth & Environmental Sciences
explosion Earth & Environmental Sciences
acoustics Earth & Environmental Sciences
monitoring Earth & Environmental Sciences
Acoustics Engineering & Materials Science
Monitoring Engineering & Materials Science
Rocks Engineering & Materials Science
wave field Earth & Environmental Sciences

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Projects 2016 2017

Research Output 2012 2019

  • 4 Citations
  • 1 h-Index
  • 30 Article
  • 16 Conference contribution
  • 2 Conference article

Defining of 2-D surfaces of a combined hierarchical object located in the block layered geological medium using the data of active acoustic monitoring

Hachay, O., Khachay, A. & Khachay, O., 1 Jan 2019, 18th International Conference "Geoinformatics: Theoretical and Applied Aspects", Geoinformatics 2019. European Association of Geoscientists and Engineers, 15053. (18th International Conference "Geoinformatics: Theoretical and Applied Aspects", Geoinformatics 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Inverse problems
Acoustics
Monitoring
Open systems
Elastic waves
Oil wells
oil well
Phase diagrams
Oils
acoustics
Open Access
rockburst
acoustics
monitoring system
monitoring
inverse problem

Algorithm of modeling of acoustic monitoring of composite hierarchical inclusions

Hachay, O., Khachay, A. & Hachay, O., 1 Jan 2018, 17th International Conference on Geoinformatics - Theoretical and Applied Aspects. European Association of Geoscientists and Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Acoustics
Monitoring
Composite materials
Rocks
Integrodifferential equations

Asymptotics of a Solution of a Three-Dimensional Nonlinear Wave Equation near a Butterfly Catastrophe Point

Khachai, O. Y., 1 Jul 2018, In : Proceedings of the Steklov Institute of Mathematics. 301, p. 72-87 16 p.

Research output: Contribution to journalArticleResearchpeer-review

Catastrophe
Nonlinear Wave Equation
Asymptotic Expansion
Three-dimensional
Ordinary differential equation