• An Algorithm for Thresholding in the Context of Signal Denoising with Wavelets 

      Gogu, Anisia; Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2008)
      The problem of estimating a signal corrupted by additive noise has been of interest to many researchers for practical as well as theoretical reasons. Wavelet based methods have become increasingly popular, due to a number ...
    • Artifacts Removing in Ultrasonic Images by Fusion Processes 

      Cernat, Nicoleta; Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2013)
      Allmost airborne ultrasonic images used in robotics have artefacts and distorstions, when comparing real objects with those presented in ultrasonic images. The differences between reral and reference images have various ...
    • Building Similarity Maps of the Environment Using Sonar Information for the Navigation of Mobile Robots 

      Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2003)
      The objective of the work is to present a representation called similarity map based on some results in the evaluation of the SONAR system of a mobile robot. As environment a corner of our lab it is considered. Based on ...
    • A Distortion Input Parameter in Image Denoising Algorithms with Wavelets 

      Gogu, Anista; Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2009)
      The problem of image denoising based on wavelets is considered. The paper proposes an image denoising method by imposing a distortion input parameter instead of threshold. The method has two algorithms. The first one is ...
    • Evaluation of two Algorithms for Change Detection Based on Vibration Signals Processing 

      Aiordăchioaie, Dorel (Universitatea "Dunărea de Jos" din Galați, 2017)
      Change detection and diagnosis are important activities and research directions, in the field of system engineering and conditional maintenance of the equipment and industrial processes. The processed signals are coming ...
    • Force Prediction in Cold Rolling Mills by Polynomial Methods 

      Roman, Nicu; Aiordăchioaie, Dorel; Ceangă, Emil; Bivol, Ion ("Dunarea de Jos" University of Galati, 2007)
      A method for steel and aluminium strip thickness control is provided including a new technique for predictive rolling force estimation method by statistic model based on polynomial methods.
    • On Activity Modelling in Process Modelling 

      Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2001)
      The paper is looking to the dynamic feature of the meta-models of the process modelling process, the time. Some principles are considered and discussed as main dimensions of any modelling activity: the compatibility of ...
    • On Estimation of the Orientation of Mobele Robots Ising Turning Fuctions and Sonar Information 

      Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2003)
      SONAR systems are widely used by some artificial objects, e.g. robots, and by animals, e.g. bats, for navigation and pattern recognition. The objective of this paper is to present a solution on the estimation of the ...
    • On Phenomena Based Metamodelling - A Process System Engineering Point Of View 

      Aiordăchioaie, Dorel; Aoyama, Atsushi; Chatterjee, Ranajit; Naka, Yuji ("Dunarea de Jos" University of Galati, 2000)
      This work is looking to methodological aspects of process modelling. The point of view is more from Process System Engineering (PSE) in order to develop formal and generic techniques for process modelling, and to use ...
    • On Process Modelling Using Physical Oriented and Phenomena Based Principles 

      Aiordăchioaie, Dorel; Popa, Rusten; Culea, Mihai ("Dunarea de Jos" University of Galati, 2000)
      This work presents a modelling framework based on phenomena description of the process. The approach is taken to easy understand and construct process model in heterogeneous possible distributed modelling and simulation ...
    • On the harmonics reduction using wavelet based signal processing 

      Culea, Mihai; Aiordăchioaie, Dorel; Găiceanu, Marian ("Dunarea de Jos" University of Galati, 2000)
      This paper presents a method for calculating the reference currents needed for the command of an active filter. By using the Discrete Wavelet Transform (DWT) the high-frequency components of the currents are eliminated. ...
    • Prelucrarea statistică și informațională a semnelor 

      Aiordăchioaie, Dorel; Culea-Florescu, Anisia (Universitatea "Dunărea de Jos" din Galați, 2016)
      În sistemele electrice se utilizează forme de undă de curent și tensiune pentru achiziția, transmiterea și procesarea informației. Semnalele, indiferent dacă sunt de tensiune sau de curent, sunt funcții de timp și fac parte ...
    • Some Properties of Entropies for change Detection 

      Aiordăchioaie, Dorel ("Dunarea de Jos" University of Galati, 2013)
      The segmentation of signals is an important process in change detection applications. Many results reported in the literature use information and entropy, as direct or indirect processed variables. The objective of the ...