Traditionally, representatives of technical faculties win the university competition "Young Teacher-Researcher". It is even more pleasant to tell about a young scientist, whose historical explorations are interesting and modern, they are published in international publications.

"After defending my dissertation at Igor Sikorsky Kyiv Polytechnic Institute, I started working as a specialist historian," recalls Serhiy Cholii, associate professor of history, who was awarded the title of "Young Teacher-Researcher" in 2019 and 2020. And it all started with the historical faculty of KNU, which Sergii graduated in 2008. There he studied in graduate school, where in 2013 he defended his dissertation "Formation of the Austro-Hungarian Armed Forces in the domestic policy of the Habsburg Monarchy." The work was carried out in conjunction with the graduate program of the University of Vienna "Austrian Galicia and its intercultural heritage" and several other European research institutes. And then the interest in ancient history grew into the study of modern history.

At the Department of History, Serhii Vasyliovych has consistently held the positions of teacher, senior lecturer, and associate professor. The department is not a graduate, but the teacher has been organizing the annual student scientific-practical conference "Ukraine: history, culture, memory ", which is conducted by the Department of History of Igor Sikorsky Kyiv Polytechnic Institute. In addition to teaching, he actively conducts scientific research in the field of modern and contemporary history in several areas. First of all, it is the tradition of military manning in Europe of the XIX-XXI centuries, where the young scientist studies the Central European and Ukrainian experience of the male population during military service. Secondly, it is environmental history and migrations caused by environmental and political factors.

In addition, during 2017-2020, Serhii Cholii was the head of the research project implemented at the FSP - "Improvement of human capital as a factor in increasing the mobilization potential of Ukraine.” This study, funded by a grant from the Ministry of Education and Science of Ukraine for young scientists, brought together an interdisciplinary team of young scientists who worked to solve an important and relevant in today's social problem. The paper theoretically outlines various parameters of such a phenomenon as mobilization in the political, social, economic and military life of the country, analyzes the practical application of mobilization processes in public policy and legal activity. Thus, it is established that during the growth of social and political tensions between states and in the states themselves, societies, in the presence of appropriate mobilization potential, are able to solve the problems of survival and adaptation.

It should be noted that in his scientific activity Sergii Vasyliovych actively cooperates with foreign educational and scientific institutions, participates in scientific conferences, summer schools, publishes in international publications, including those indexed in scientometric databases Scopus and Web of Science. As a historian, S. Cholii actively searches for new information through annual archival and field research. Among other things, he was interested in the summer school "Polissya as a landscape of intervention" of the Herder Institute for Historical Studies of Eastern Europe, research program of the German Historical Institute in Warsaw (2021), etc.

The young researcher is the author of more than 30 scientific publications. Among them is the monograph "Mobilization on the periphery. Military service as a factor in the modernization of the Habsburg Empire 1868-1914 "(2016), articles" War as a model of population movement in the modern world ... “ (Berlin: Duncker&Humblot, 2020), "Communities in Fukushima and Chernobyl - favorable and deterrent factors in the recovery of nuclear disasters" in "Demography of disasters: impact on population and place "(Springer Nature, 2020)," Mobilization in post-socialist spaces: between the imperatives of modernization and the threats of demodernization "(Politics, 2018) and others. Publications help to learn about history, draw parallels with the present, are the basis for understanding possible development scenarios.