The purpose of my research is to provide insight into the current state of smart cities. According to the everyday language, settlements use digital solutions for smart cities, which make life easier for people, who living there. The article demonstrates the impact on smart cities and how complex this concept is in practice. A smart city is constantly exploring and analysing the effects of the developments and innovations introduced.
 Debreceni virágkarnevál. Történet. (2017. 08 10.). http://debreceniviragkarneval.hu/tortenet/
 Dehir: Kétezer akkumulátor hajtja majd az egyetem virágkocsiját – videóval . (2016) http://www.dehir.hu/debrecen/ketezer-akkumulator-hajtja-majd-az-egyetem-viragkocsijat/2016/07/18/
 Nemet G.: Automobile Fuel Efficiency Standards. Historical Case Studies of Energy Technology Innovation In: The global energy assessment. (Eds. Grubler A., Aguayo F., Gallagher K. S., Hekkert M., Jiang K., Mytelka L., Neij L., Nemet G., C. Wilson
Nowadays more and more ultralight aircraft are being built because the building process itself and the acquisition of the necessary documentation is relatively easy. Furthermore, these planes are easier to fly than larger types of aircraft. This article presents the engineering work and documentation that is necessary for the building process. The calculations can be done traditionally on paper which is an extremely complex task. With the innovations and developments in the technical field though, it is possible now to simplify these calculations, the basis of which is the finite element method and aerodynamics simulations. If the finite element method is adequate, the boundary conditions are ideal and input-output settings for the simulations are correct, it is possible to compare the traditional calculations to the modern simulated engineering work, thus the time necessary for achieving precise results becomes significantly shorter.