523 research outputs found

    Mary Georgi

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    abstract: Mari Georgi left her village before it was attacked at the age of seven. She never witnessed the war but did hear about the attacks and the violence. On July 28, 2000 she came to the United States. “Lost Boys Found” is an ongoing, interdisciplinary project that is collecting, recording and archiving the oral histories of the Lost Boys/Girls of Sudan. The collection is a work-in-progress, seeking to record the oral history of as many Lost Boys/Girls as are willing, and will be used in a future book.Age: 37Region: Southern SudanThis picture and bio was donated to the "Lost Boys Found" oral history project from The Arizona Lost Boys Cente

    Fault Prognosis of Electric Powertrains using Deep Learning Approaches

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    Author Georgi DambolovMasterarbeit Johannes Kepler Universität Linz 202

    Vuk and Georgi: An adventure into active systems via mechatronics, robotics and manufacturing engineering

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    Dimirovski, Georgi M. (Dogus Author) -- Conference full title: 2013 IEEE 11th International Symposium on Intelligent Systems and Informatics (SISY) 26-28 Sept. 2013, Subotica, SerbiaThe last century's ending quarter was marked by an dramatically dynamic development of new technologies and practical realizations of diverse technical constructions in various fields of engineering, in general, and in robotics, in particular. However, such growth of new technological achievements was not accompanied always with the necessary caution steps and protection measures against possible breakdown and destructions, which in specific cases and under certain conditions could be disastrous. In this talk commemorating Academician Vukobratovic and drawing from his endeavors on the so-called active systems and research he shared with me as well as our academic cooperation during the last decade of his active work, while examining some advantages, his merits for the entire field are pointed in here out to the best author's abilities. Some active systems such as adaptation for active noise and machine vibration control via active damping by force feedback as well as mobile robotic unmanned air and underwater vehicles as well as platoon of ground vehicles are note considered. Rather focus is put on active controls of earthquake induced vibrations and high-rise structures, manufacturing processes, wheeled mobile manipulators and walking humanoid robots are discussed in more detail while on homing missiles are only mentioned. In due course, some solutions to contact task in dynamic environment that are linked with active systems are also touched upon

    Polynomial J-spectral factorization method for optimal control of discrete-time systems

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    Dimirovski, Georgi M. (Dogus Author)We present a simple algorithm for linear-quadratic control of discrete-time systems, based on polynomial J-spectral factorization

    Passivity-based global stabilization of a class of switched nonlinear systems by backstepping

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    Dimirovski, Georgi M. (Dogus Author) -- Conference full title: 33rd Chinese Control Conference (CCC), 28-30 July 2014, Nanjing, ChinaThis paper considers the global stabilization problem for a class of switched nonlinear systems. Passivity-based global stabilization controller and a state-dependent switching law of switched nonlinear systems with any relative degree are designed with the help of the recursive feedback passification design technique. Finally, a numerical example is presented to illustrate the effectiveness of our results.IEE

    Positive observer design for switched interval positive systems via the state-dependent and time-dependent switching

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    Dimirovski, Georgi M. (Dogus Author) -- Conference full title: 35th Chinese Control Conference: July, 2016, Chengdu, China.Positive observer design of interval switched positive systems is considered in this paper. The multiple quadratic co-positive Lyapunov functions technique and the method of augmented systems are adopted. The sufficient conditions of insuring stabilization of augmented systems are obtained under the state-dependent and time-dependent switching law, respectively. In the end, a numerical example is provided to demonstrate the feasibility of the presented results

    A condition for output-to-state stability of switched nonlinear systems

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    Dimirovski, Georgi M. (Dogus Author)Output-to-state stability of switched nonlinear systems is studied in this paper. A sufficient condition for output-to-state stability is given in terms of series expressions and under the assumption that all subsystems are output-to-state stable. For a class of switched nonlinear systems we also show how to satisfy this condition by appropriately choosing dwell time. A lower bound on such dwell time is explicitly calculated. AU results are derived constructively

    Synchronized dancing of an industrial manipulator and humans with arbitrary music

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    Tükel, Dilek Bilgin (Dogus Author) -- Dimirovski, Georgi M. (Dogus Author)An extended Labanotation for an industrial robot was developed and applied. A user-friendly program was designed to help design dance choreography. The program, LabanRobot, has a simple interface that can be used without any prior knowledge of the robot. The choreographer should keep geometry in mind and plan the dance sequence accordingly. The conversion of dance sequences to robot motion is done automatically by the program. Details of the algorithm are given. Examples of simulation and on-stage-performance are shown

    Unreal space, symbolic space : Warsaw in Georgi Markov's "Zhenite na Varshava"

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    After defection from Bulgaria, dissident writer Georgi Markov, re-writes his novel Women of Warsaw. In new, finalized (as the author claims) version of the book narrator declares that the title city has no meaning and could be changed to London, Tokyo or Madrid. This paper not only attempts to prove that the choice of the city was not random, but it also tries to discover the real meaning of Makrov’s "Warsaw"
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