This book is a collection of scientific papers presented at the first. International Interdisciplinary PhD Workshop, held at Szklarska Poręba on May 10-13, 2009. The papers presented consist of topics from a wide variety of disciplines realized at Faculties of: electric, electronic, automatic, mechatronics, bioengineering and computer sciences. We hope that all members found the subject they were interested in. As usual, participants had a chance to attend oral and poster sessions as well as visit Prague, one of the most beautiful European cities. For those keen on active rest, the mountain trek was organized. In conclusion we would like to present some pictures took during the IIPHDW’09 Conference.

Table of Contents

I Power Electronics

1. Simulation of overvoltages generated Chile switching capacitive circuit by a vacuum switch

2. The influence of contact construction and setting on the magnetic flux density distribution in the contact gap

3. Electromagnetic properties analysis of dielectrics for application in electronics

4. Numerical simulation of a thermoacoustic refrigerator

5. Temperature of electric arc in argon – metal vapor atmosphere

6. Ultracapacitor fractional order dynamic model – properties and experiments

7. Improvement of visitor microstructure by Bi₂O₃ modification

II Applied Mathematics

8. Parameter estimation for a hysteresis model

9. Application of the Dirchlet – Neumann algorithm to calculations of light propagation in 3D multilayered spherical model

10. Error Analysis for Learning Process Modeling

11. Propagation of Light as Electromagnetic Waves in Design of Lighting Systems

12. Integral Model of Induction Heating of Rotating Bodies with Respecting Mechanical Transient

13. The development technology of cleaning sewage by underwater electrical discharge

14. Automated Terrain Surface Modelling with Particle Systems

15. Modified Broyden’s method for modeling of magnetic fields in nonlinear media

16. Electrical impedance tomography using the level set representation with the Mumford-Shah model

17. Clausen’s integral, Catalan’s constant and the resistance of a thin disc

18. Application of Level Set Method in Electrical Impedance Tomography Inverse Problem

III Environmental Protection

19. The determination of VFA and COD changes within the excessive sludge under the influence of ultrasonic waves

20. Thermovision diagnostic of gas temperature in the chamber of gliding arc plasma reactor

21. The influence of fertilation on energetic value and the amount of biomass from “Miscanthus giganteus”

22. The course of anaerobic stabilization process of excessive sludge, given to the sonificationc and coming from the pulp industry

IV Bioengineering

23. An approach to segmentation of bronchial tree from volumetric CT chest scans

24. Detection of Magnetic Field Generated by Low Current Signals Using Novel Needle Type GMR Sensor

25. Segmentation methods from MRI processing

26. Breast models from optical tomography based on Boundary Element Method

27. Measuring of pressure in intra – abdomen

28. Analysis of nerve fiber models for modeling magnetic stimulation

V Informatics and Telecommunications

29. Switching median filter for denosing images corrupted by impulse noise

30. Scientific Computation with Graphical Processor Units – a Case Study

31. Subspace Identification of a Linear Repetitive

32. Measurement and Analysis of Surface Discharge Sound by Optical Wave Microphone

33. Using jQuery library to improve web accessibility

34. Applications of GMR sensors in the context of other developments biomagnetic

35. Modelling virtual environments in X3D