Yeskendyr Ashimov

Al-Farabi Kazakh National University · Department of Physics and Technology

In astrophysics, the Lomb–Scargle method is widely used to analyse time series observations of stellar objects. The method allows us to detect periodic variations in the light intensity of a star, which may be due to its rotation, pulsations or interaction with a companion. In this paper, we describe the mathematical modelling of the Lomb–Scargle m...

One of the key problems for students, especially from developing countries during pandemic is a lack of the electronic materials. Obviously, there are a lot of problems arise during education in the online regime. First of all, it is a weak Internet connection combined with the lack of appropriate equipment. Even having a higher quality computer th...

The article points out some of the challenges faced by students at the University of Ostrava, Comenius University in Bratislava and Al-Farabi Kazakh National University, who had almost no previous practice in online teaching during the COVID-19 pandemic situation. The students from the mentioned universities were interviewed to share their experien...

Randomly distributed nonoverlapping perfectly conducting n spheres of radii rk (k=1,2,…,n) are embedded in a conducting matrix occupying a large ball of the normalized unit radius. The potential and the normal flux are given on the boundary of large ball. The locations of inclusions ak are not known. A perturbation term induced by inclusions is con...