Перегляд за автором "Luhach, Ashish Kr."

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  • Зображення мініатюри
    Публікація
    Electronic User Authentication Key for Access to HMI/SCADA via Unsecured Internet Networks
    (Hindawi, 2022) Abu-Jassar, Amer Tahseen; Attar, Hani; Yevsieiev, V.; Amer, Ayman; Demska, N.; Luhach, Ashish Kr.; Lyashenko, V.
    This paper discusses the development of new hardware and software for protecting access to HMI/SCADA systems via Unprotected Internet Networks (UPN), mainly when working remotely with confidential information. Based on the analysis carried out, it is shown that the existing vulnerabilities can be exploited by cybercriminals to steal passwords and user authentication logins. Modern protection technologies based on the OTP method have been investigated. Moreover, a new concept of information security for user authentication in UPNs when working with information remotely is proposed. The structure of the electronic key and the connection diagram based on the selected hardware modules have been developed. In addition, the two-level user identification algorithms and the firmware program code for the ATmega32U4 microcontroller are considered. Finally, to show the reliability and stability of the of the developed electronic user authentication key against any unexpected software hacking, a number of experiments have been performed.
  • Зображення мініатюри
    Публікація
    Zoomorphic Mobile Robot Development for Vertical Movement Based on the Geometrical Family Caterpillar
    (Hindawi, 2022) Attar, Hani; Abu-Jassar, Amer Tahseen; Yevsieiev, V.; Lyashenko, V.; Nevliudov, I.; Luhach, Ashish Kr.
    Research in robotics is one of the promising areas in mobile robot development, which is planned to be implemented in extreme dangerous conditions of areas explored by humans. This article aims at developing and improving a prototype of zoomorphic mobile robots that are designed to repeat the existing biological objects in nature. The authors performed a detailed analysis on the structure and dynamics of the geometrical family caterpillar movement, which is passed on a practical design implemented to perform the dynamic movement on uneven vertical surfaces. Based on the obtained analysis, the design and kinematic scheme of the movement is developed. Also, the structural control scheme via the Internet technologies that allow carrying out remote control is presented in this paper, considering the dangerous mobile robot work zones. To test the recommended solutions, the authors developed detailed 3D printed models of the mobile robot constructions for the implemented hardware. The model of the mobile robot is constructed, and the control system with examples of the user program code implementations is performed. Several experiments were performed, which showed the efficiency of the achieved mobile robot for solving problems of vertical movement on uneven metal surfaces. Moreover, the obtained slow motion of the designed robot proves that the simulated robot behaves similarly to the natural behavior of caterpillar movement.