Archive for May, 2010

The text is written in November 2008 for the http://groups.google.com/group/mor4ansys group. In the TCAD Newsletter I have found an interesting reference R. Ionutiu, J. Rommes, A. Antoulas: “Passivity preserving model reduction using dominant spectral zero interpolation”, IEEE Transactions on COMPUTER-AIDED DESIGN of Integrated Circuits and System, 2008, vol. 27, N 12, pp. 2250-2263 http://dx.doi.org/10.1109/TCAD.2008.2006160 It [...]

The text is written in December 2008 for the http://groups.google.com/group/mor4ansys group. E. W. Sachs and M. Schu Reduced Order Models (POD) for Calibration Problems in Finance Numerical Mathematics and Advanced Applications, 2008, Part 2, p. 735-742 http://dx.doi.org/10.1007/978-3-540-69777-0_88 It is exiting to learn that model reduction could help to save us from the financial crisis. In [...]

The text is written in January 2009 for the http://groups.google.com/group/mor4ansys group. Yongquan Wang, Hualing Chen, Xueming He System-level modeling and simulation for an electrostaticfeedback microaccelerometer based on equivalent electrical representation Microsyst Technol (2007) 13:613–624 http://dx.doi.org/10.1007/s00542-006-0361-2 I have browsed the paper above. It is a good application of the nodal approach to develop a compact model [...]

The text is written in January 2009 for the http://groups.google.com/group/mor4ansys group. I have being reading this week the paper J.C. Willems, The behavioral approach to open and interconnected systems, Control Systems Magazine, Volume 27, pages 46-99, 2007. The paper is available at http://homes.esat.kuleuven.be/~jwillems/Articles/JournalArticles/2007.1.pdf There is also available a related presentation Interconnected systems http://homes.esat.kuleuven.be/~jwillems/Recentlectures/2008/DelftVivaVoce.pdf and its [...]

The text is written in March 2009 for the http://groups.google.com/group/mor4ansys group.  A few comments to the paper G. Shi, B. Hu, and C.-J. R. Shi, “On symbolic model order reduction”, IEEE Trans. on Computer-Aided Design, vol. 25, no. 7, pp. 1257-1272, July 2006. http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1634623 or http://www.ee.washington.edu/research/mscad/shi/Papers/TCAD_2006_July_2.pdf that I have recently read. This is an interesting paper. [...]

The text is written in December 2008. I review the final chapters 6 and 7 of the book Thermodynamics: A Dynamical Systems Approach by Wassim M. Haddad, Vijay Sekhar Chellaboina, & Sergey G. Nersesov http://blog.rudnyi.ru/2010/05/thermodynamics-dynamical-systems.html Chapter 6: Thermodynamic Systems with Linear Energy Exchange In this chapter the authors consider the case from Chapter 3 but [...]

The text is written in December 2008. I review the fifth chapter, Work, Heat, and the Carno Cycle of the book Thermodynamics: A Dynamical Systems Approach by Wassim M. Haddad, Vijay Sekhar Chellaboina, & Sergey G. Nersesov http://blog.rudnyi.ru/2010/05/thermodynamics-dynamical-systems.html In this chapter the authors extend the formalism of Chapter 3 for a system with deformable wall, [...]

The text is written in December 2008. I review the fourth chapter, Temperature Equipartition and the Kinetic Theory of Gases of the book Thermodynamics: A Dynamical Systems Approach by Wassim M. Haddad, Vijay Sekhar Chellaboina, & Sergey G. Nersesov http://blog.rudnyi.ru/2010/05/thermodynamics-dynamical-systems.html In this chapter the authors extend the theory of Chapter 3 from the case when [...]