Conferences

2013 Anamaria Oros, Ingrid Kovacs, Marina Ţopa, Andi Buzo, Monica Răfăilă, Manuel Harrant, Georg Pelz, “Data Improvement in Lab Verification of Smart Power Products using DoE”, Proceedings of the 19th SIITME2013, pp 171-176, Galaţi, Romania, 24-27 October, 2013. International Symposium for Design and Technology of Electronics Packages
2013 Adrian Călin Fărcaş, Marina Dana Ţopa, “The adaptation of a recording studio for a performance room, using multiple position room response equalization”, Proc. of the International Conference on Acoustics AIA-DAGA 2013, ISBN: 978-3-939296-05-8, pp. 2094-2097, Merano, Italy, March 18-21, 2013.
2012 Cristian Conţan, Marina Ţopa, “Variable Step Size Adaptive Nonlinear Echo Canceller”, Proc. of the 10th 1-4244-8458-4, pp. 353-356, Timişoara, Romania, November 15-16, 2012. International Symposium on Electronics and Telecommunications ISETC’ 2012, International Symposium on Electronics and Telecommunications ISETC’ 2012, ISSN 978- 1-4244-8458-4, pp. 353-356, Timişoara, Romania, November 15-16, 2012.
2012 Anamaria Oros, Marina Ţopa, Marius Neag, Monica Răfăilă, Georg Pelz, “Application-Oriented Robustness Optimization based on Metamodels”, Proceedings of the 18th for Design and Technology of Electronics Packages SIITME2012, pp 37-41, Alba-Iulia, Romania, 25-28 October, 2012.
2012 Cristian Conţan, Marcus Zeller, Walter Kellerman, Marina Ţopa, “Excitation-Dependent  Stepsize Control of Adaptive Volterra Filters for Acoustic Echo Cancellation”,  Proc. 20th European Signal Processing (EUSIPCO2012), ISSN: 2076-1465. pp. 604–609, Bucharest, Romania, August 27-31 2012.
2011 Botond Sandor Kirei, Marius Neag, Marina Dana Ţopa, “Composite RF tuner models and their object oriented implementation “, Proc. 34th International Conference on Telecommunications and Signal Processing (TSP), ISBN: 978-1-4577-1410-8, pp. 150–154, Budapest, Hungary, 18-20 Aug. 2011.
2011 Ioana Homănă, Marina Ţopa, Botond Sandor Kirei, Cristian Conţan, “Behavior of Variable Step-Size NLMS Algorithms for Acoustic Echo Cancellation”, Proceedings of IEEE Symposium on Signals, Circuits and Systems (ISSCS), pp. 347-359, Iaşi, Romania, June 30-July 1, 2011.
2011 Cristian Conţan, Ioana Homănă, Marina Ţopa, Botond Sandor Kirei, “Nonlinear Acoustic System Identification using a Combination of Volterra and Power Filters”, Proceedings of IEEE Symposium on Signals, Circuits and Systems (ISSCS), pp. 431-434, Iaşi, Romania, June 30-July 1, 2011.
2010 Raul Oneţ, Victor Popescu, Marius Neag, Ioana Sărăcuţ, Marina Ţopa, “Matlab Modeling and Analysis of the Signal Path in Zero-IF DVB-H Radio Receivers”, Proc. of the 2010 9th International Symposium on Electronics and Telecommunications ISETC’ 2010, ISSN 978-1-4244-8458-4, pp. 43-46, Timişoara, Romania, November 11-12, 2010.
2010 Ioana Homănă, Marina Ţopa, Botond Sandor Kirei, Cristian Conţan, “Adaptive Algorithms for Double-Talk Echo Cancelling”,  Proc. of the 2010 9th International Symposium on Electronics and Telecommunications ISETC’ 2010,  ISSN 978-1-4244-8458-4, pp. 349-352, Timişoara, Romania, November 11-12, 2010.
2012 Botond Sandor Kirei, Marius Neag, Marina Dana Ţopa,, “Symmetric Adaptive Decorrelation for I/Q Imbalance Compensation in Narrowband Receivers”,  Proc. of the 2010 9th International Symposium on Electronics and Telecommunications ISETC’ 2010, ISSN 978-1-4244-8458-4, pp. 353-356, Timişoara, Romania, November 11-12, 2010.
2010 Botond Sandor Kirei, Marius Neag, Marina Dana Ţopa, “On I/Q Imbalance Compensation Based on Adaptive Filtering in Low-IF and Zero-IF Radio”, Proceedings of the 2010 IEEE International Conference on Automation, Quality and Testing (AQTR 2010), ISBN 978-1-4244-6722-8, pp. 166-169, Cluj-Napoca, Romania, May 28-30, 2010.
2010 Ioana Homǎnǎ, Marina Dana Ţopa, Botond Sandor Kirei, “Semi-blind equalization using the Constant Modulus Algorithm”, Proceedings of the 2010 IEEE International Conference on Automation, Quality and Testing (AQTR 2010), ISBN 978-1-4244-6722-8, pp. 299-302, Cluj-Napoca, Romania, May 28-30, 2010.
2010 Marius Neag, Raul Onet, Robert Groza, Marina Ţopa, “Analysing the Stability of Series-Shunt Circuits based on Voltage and Current-Feedback OpAmps Through SPICE AC Simulations”, Proceedings of the 2010 IEEE International Conference on Automation, Quality and Testing (AQTR 2010), ISBN 978-1-4244-6722-8, pp. 155-159, Cluj-Napoca, Romania, May 28-30, 2010.
2009 Raul Oneţ, Marius Neag, Marina Ţopa, “Comparison Between Three Structures of High Speed Low-Voltage and Low-Dropout Linear Regulators”, Proceedings of the 15th International Symposium for Design and Technology of Electronics Packages SIITME2009, pp 341-345, Gyula, Hungary, 17-20 September, 2009.
2009 Ioana Homănă, Marina Ţopa, Botond Sandor Kirei, “Echo Cancelling Using Adaptive Algorithms”, Proceedings of the 15th International Symposium for Design and Technology of Electronics Packages SIITME2009, pp 347-351,  Gyula, Hungary,17-20 September, 2009.
2009 Botond Sandor Kirei, Marina Ţopa, Albert Csaba Fazakas, Norbert Toma, “Novel FIR Implementation for Acoustic Signal Processing”, Proceedings of the 15th International Symposium for Design and Technology of Electronics Packages SIITME2009, pp 387-390, Gyula, Hungary, 17-20 September, 2009.
2009 Irina Dornean, Marina Ţopa, Botond Sandor Kirei, Marius Neag, “Sub-Band Adaptive Filtering for Acoustic Echo Cancellation”, Proceedings of the European Conference on Circuit Theory and Design ECCTD 2009, ISBN 978-1-4244-3896-9, pp. 810-813 (on CD C3L-D-3), Antalya, Turkey, 23-27 August, 2009.
2009 Marius Neag, Raul Oneţ, Marina Ţopa, “A New OTA-C Universal Biquad Resonates out the Main Parasitic Capacitance”, Proceedings of the European Conference on Circuit Theory and Design ECCTD 2009, ISBN 978-1-4244-3896-9,  pp. 125-128, (on CD A2L-B-2), Antalya, Turkey,  23-27 August, 2009.
2009 Botond Sandor Kirei, Irina Dornean, Marina Ţopa, Marius Neag, “Reconfigurable Zero/Low-IF Receiver”, Proceedings of the IEEE International Symposium on Signals, Circuits & Systems ISSCS 2009,  ISBN 978-1-4244-3748-9,  Vol. 2, pp. 417-420, Iaşi, Romania 9-10 July, 2009.
2008 Botond Sandor Kirei, Irina Dornean, Marina Ţopa, “Image Rejection Filter Based on Complex LMS Filter for Low-IF Receivers”, Proceedings of the 50 th International IEEE Symposium ELMAR-2008, ISBN  978-953-7044-08-04,  pp. 203-206, Zadar, Croatia,  10-12 September, 2008.
2008 Botond Sandor Kirei, Marina Ţopa, Irina Dornean, Albert Fazakas, “Novel Image Rejection Filter Based on Neural Networks”, Proceedings of the 2008 International Conference on Knowledege-Bases Intelligent Information and Engineering Systems (KES 2008), ISBN 978-3-540-85567-5, vol. III, pp. 343-350, Zagreb, Croatia, September 3-5, 2008.
2008 Erwin Szopos, Marina Ţopa, Robert Groza, “Adaptive LMS and Pade Algorithms in System Identification”, Proceedings of the IEEE International Conference on Applied Electronics,  ISBN  987-80-7043-654-7, pp. 219-222, Pilsen, Czech Republic,  10-11 September, 2008.
2008 Erwin Szopos, Marina Ţopa, Irina Dornean, Robert Groza, “Adaptive LMS Algorithm System Identification using LabVIEW”, Proceedings of the 2008 IEEE International Conference on Automation, Quality and Testing (AQTR 2008), ISBN  978-973-713-248-2, pp. 254-257, Cluj-Napoca, Romania, May 22-25, 2008.
2008 B.S.Kirei, Marina Ţopa, V. Popescu, Irina Dornean, “Image Rejection Filter Based on Blind Source Separation for Low-IF Receivers”, Proceedings of the 2008 IEEE International Conference on Automation, Quality and Testing (AQTR 2008), ISBN 978-1-4244-2576-1,  pp. 253-256, Cluj-Napoca, Romania, May 22-25, 2008.
2008 I. Dornean, Marina Ţopa, B. S. Kirei, G. Oltean, “HDL Implementation of the Variable Step Size N-LMS Adaptive Algorithm”, Proceedings of the 2008 IEEE International Conference on Automation, Quality and Testing (AQTR 2008), ISBN 978-1-4244-2576-1, pp.243-246, Cluj-Napoca, Romania, May 22-25, 2008.
2008 Botond Sandor Kirei, Victor Popescu, Marina Ţopa, Ioana Popescu, “A Propagation Model for Coupled Lines”, Proceedings of the 2008 IEEE International Spring Seminar on Electronics Technology, Reliability and Life-Time Prediction (ISSE 2008), ISBN  978-963-06-4915-5, pp. 624-629, Budapest, Hungary, May 7-11, 2008.
2007 Marina Dana Ţopa, Norbert Toma, Victor Popescu, Vasile Ţopa, “Evaluation of All-Pass Reverberators”, Proceedings of the 14th IEEE International Conference on Electronics,Circuits and Systems ICECS’2007,  ISBN 1-4244-1387-8, pp. 339-342, Marrakech, Morocco,  December 11-14, 2007.
2007 Erwin Szopos, Marina Ţopa, Istvan Lazar, “System Identification with the Pade Algorithm”, Proceedings of the IEEE International Conference on Applied Electronics,  ISBN  987-80-7043-537-3, pp. 215-218, Pilsen, Czech Republic, 5-6 September, 2007.
2007 Marius Neag, Marina Ţopa, Liviu Nedelea, Lelia Feştilă, Vasile Ţopa, “A Filter Design Framework with Multicriteria Optimization Based on a Genetic Algorithm”, Scientific Computing in Electrical Engineering SCEE 2006, Springer Book Series – Mathematics in Industry (ECMSI), Vol 11, Berlin Heidelberg New York, 2007,  ISBN 978-3-540-71979-3, pp. 207-212.
2007 V. Popescu, B. S. Kirei, M. Ţopa, C. Munteanu, “Analysis of Lossless Differential Microstrip Line”, Proceedings of the 30th IEEE International Spring Seminar on Electronics Technology ISSE, ISBN  1-4244-1218-8, pp. 551-554, Cluj-Napoca, Romania, 9-13 May, 2007.
2006 Marius Neag, Liviu Nedelea, Marina Ţopa, Lelia Feştilă, “A New OTA-C Electronically Tunable Orthogonal Universal Biquad”, Proceedings of the  Annual Workshop on Circuits, Systems and Signal Processing ProRISC, pp. 61-66,Veldhoven, Netherlands, 23-24 November, 2006.
2006 Liviu Nedelea, Marius Neag, Marina Ţopa, Lelia FeştilA, Vasile Ţopa, “A Filter Design Framework with Multicriteria Optimization Based on a Genetic Algorithm”, Proceedings of 6th International Conference on Scientific Computing in Electrical Engineering, ISBN  978-973-718-520-9, pp. 96-97, Sinaia, Romania, 17-22 September, 2006.
2006 Liviu Nedelea, Marius Neag, Marina Ţopa, Lelia Feştilă, Vasile Ţopa, “Analog Filter Transfer Function Optimization Based on a Genetic Algorithm”, Proceedings of the IEEE Applied Electronics International Conference, ISBN 80-7043-442-2, , pp. 125-128, Pilsen, Czech Republic, 6-7 September, 2006.
2006 Marina Dana Ţopa, Norbert Toma, Erwin Szopos, “Performance Analysis of Some Artificial Reverberators”, Proceedings of the 6th IEEE International Conference Communications 2006, ISBN (10) 973-718-479-3, ISBN (13) 978-973-718-479-5, pp.73-76, Bucharest, Romania, June 8-10, 2006.
2006 Norbert Toma, Marina Dana Ţopa, Victor Popescu, Erwin Szopos, “Comparative Performance Analysis of Artificial Reverberation Algorithms”, Proceedings of the 2006 IEEE-TTTC International Conference on Automation, Quality and Testing, Robotics AQTR, ISBN 1-4244-0360-X,  pp.138-142, Cluj-Napoca, Romania, May 25-28, 2006.
2006 Liviu Nedelea, Marius Neag, Marina Ţopa, Lelia Feştilă, “A New CCII-Based Universal Biquad”, Proceedings of the 2006 IEEE-TTTC International Conference on Automation, Quality and Testing, Robotics AQTR, ISBN 1-4244-0360-X, pp.195-198, Cluj-Napoca, Romania,  May 25-28, 2006.
2006 Lelia Feştilă, Robert Groza, Mihaela Cirlugea, Marina Ţopa, “Modular Log-domaine Multipliers for SVM Classifiers”, Proceedings of the 2006 IEEE-TTTC International Conference on Automation, Quality and Testing, Robotics AQTR, ISBN 1-4244-0360-X,  pp.271-274, Cluj-Napoca, Romania, May 25-28, 2006.
2005 Marius Neag, Liviu Nedelea, Marina Ţopa, Lelia Feştilă, “CAD Tool for Optimized Design of High-Performance Active Filters”, Proceedings of the 12th IEEE International Workshop on System, Signals & Image Processing,  ISBN 0-907776-20-5, pp. 389-393, Chalkida, Greece, 22-24 September 2005.
2005 Norbert Toma, Marina Ţopa, Erwin Szopos, “Aspects of Reverberation Algorithms”, Proceedings of the International Symposium on Signals, Circuits and Systems ISSCS 2005, ISBN 0-7803-9029-6,  pp. 577-580, Iasi, România, 14-15 July 2005.
2005 Norbert Toma, Marina Ţopa, Erwin Szopos, “On Improved Reverberation Algorithms”, Proceedings of the 47th International Symposium ELMAR-2005, ISBN 953-7044-04-1, pp. 217-220, Zadar, Croatia, 08-10 June 2005.
2005 Erwin Szopos, Marina Ţopa, Norbert Toma, “System Identification with Adaptive Algorithms”, Proceedings of the 7th IEEE Emerging Technologies Workshop: Circuits and Systems for 4G Mobile Wireless Communications ETW’05, ISBN 5-7422-0895-2, 23-24 June 2005, Saint Petersburg, Russia, pp. 64-68.
2004 Marina Ţopa, Liviu Nedelea, Lelia Festila, Marius Neag, “Software for Designing Multicriteria Cascaded Active Filters”, Proceedings of the 8th International Workshop on Symbolic Methods and Applications to Circuit Design SMACD 2004, ISBN 0-9752353-1-1, pp. 48-51, Wroclaw, Polonia, September 23-24, 2004.
2004 Lelia Feştilă, Marina Ţopa, Sorin Hintea, Mihaela Cirlugea, Robert Groza, “A General Modular Design of ELIN Filters based on F-1NF Models”, Proceedings of the International Conference on Automation, Quality and Testing, Robotics AQTR 2004- THETA 14, ISBN 973-713-047-2, Vol. II, pp. 227-232, Cluj-Napoca, România, May 13-15 2004.
2004 Marina Ţopa, Liviu Nedelea, Lelia Festila, Marius Neag, “Computer-Aided Design Method of Multicriteria Cascaded Active Filters”, Proceedings of the 9th International Conference on Optimization of Electrical and Electronic Equipment Optim’04, Vol. IV, pp. 7-12, Braşov, România, May 20-22, 2004.
2004 Bogdan Orza, Mircea Givan, Sorin Cristea, Marina Ţopa, Aurel Vlaicu, “Integrated Solution for Management, Evaluation and Communication in Distance Education Systems”, Proceedings of the 9th International Conference on Optimization of Electrical and Electronic Equipment Optim’04, Vol. IV, pp. 199-202, Braşov, România, May 20-22, 2004.
2003 Adrian Burian, Jarmo Takala, Marina Dana Ţopa, “Parallel Iterations for Recursive Median Filter”, Proceedings of ISCAS 2003 – The 2003 IEEE International Symposium on Circuits and Systems, pp. IV-488 – IV-491, Bangkok, Thailand, 25-28 May 2003.
2003 Liviu Nedelea, Marina Ţopa, Marius Neag, “Computer-Aided Network Function Approximation for  Multicriteria Filter Design”, SCS’2003 – International Symposium on Signals, Circuits and Systems, pp. 81-84, Iaşi, Romania, 10-11 Julz, 2003.
2002 Marina Ţopa, Liviu Nedelea, Marius Neag, “A Multicriteria Optimization Program for Analog Filter Design”, Proceedings of the 7th International Workshop on Symbolic Methods and Applications to Circuit Design SMACD’2002, pp. 116-119, Sinaia, Romania, October 10-11, 2002.
2000 Vasile Ţopa, Calin Munteanu, Marina Dana Ţopa, Emil Simion, “Optimal Pole Shape Design for the Reduction of Cogging Torque of a SRM Motor using the Simulated Annealing Method”, Proceedings of the Symposium on Power Electronics, Electrical Drives, Automation & Motion, pp. 35-39, Ischia, Italy, 13-16 June 2000.
2000 Marina Dana Ţopa, Adrian Burian, “On Hypermedia Assisted Learning”, Proceedings of the 7th International Conference on Optimization of Electrical and Electronic Equipment, pp. 865-870, Braşov, Romania, 11-12 May 2000.
1999 Adrian Gogu, Marina Dana Ţopa, Vasile Ţopa, “Lifting Wavelet Algorithm Implementation with Virtual Instrumentation”, Proceedings of the XIV Design of Circuits and Integrated Systems Conference DCIS’99, pp. 525-530, Palma de Mallorca, Spain, 16-19 November 1999.
1999 Marina Dana Ţopa, Adrian Burian, Vasile Ţopa, “Interactive Assisted Learning for Circuits and Systems”, Proceedings of the 10th EAEEIE Annual Conference Educational Innovations in EIE, pp. 56-58, Capri, Italy, 17-20 May 1999.
1998 Marina Dana Ţopa, “On Symbolic Analysis of Weakly-Nonlinear Circuits”, Proceedings of the International Workshop on Symbolic Methods and Applications in Circuit Design SMACD’98,  Kaiserslautern, Germany, 8-9 October 1998.
1997 Marina Dana Ţopa, P. Wambacq, G. Gielen, W. Sansen, E. Simion, “Postprocessing Techniques for Approximate Symbolic Network Functions of Complex Analog Integrated Building Blocks”, Proceedings of the 1997 European Conference on Circuit Theory and Design, Vol. 3, pp. 1464-1467, Budapest, Hungary, 30 August -3 September 1997.
1996 Marina Dana Ţopa, E. Simion, “Applications of Symbolic Network Analysis”, Proceedings of the Third International Conference on Electronics, Circuits and Systems ICECS’96, pp.108-111, Rodos, Greece, 13-16 October 1996.
1996 Marina Dana Ţopa, E. Simion, A. Burian, “A Symbolic Computation Program for Circuit Analysis”, Proceedings of the Symposium on Electronics and Telecommunications, pp. 39-44, Timisoara, Romania, 26-27 October 1996.
1996 P. Wambacq, Marina Dana Ţopa, G. Gielen, W. Sansen, E. Simion, “Factorization of Approximate Symbolic Network Functions of Complex Analog Integrated Building Blocks”, Proceedings of the 4th International Workshop on Symbolic Methods and Applications in Circuit Design SMACD’96, Heverlee Belgium, 10-11 October 1996.
1996 Marina Dana Ţopa, E. Simion, V. Ţopa, “Symbolic Noise Analysis for Electrical Circuits”, Proceedings of the Symposium on Power Electronics, Industrial Drives Power Quality, Traction Systems, SPEEDAM’96, pp. B6-15 – B6-18, Capri, Italy, 5-7 June 1996.
1996 Marina Dana Ţopa, A. Burian, “A Symbolic Computation Program for Circuit Analysis”, Proceedings of the 3rd Advanced Training Course of Mixed Design of Integrated Circuits and Systems, pp. 155-160, Lodz, Poland, 30 May – 1 June 1996.
1996 Marina Dana Ţopa, A. Burian, M. Neag, “Multiple-Choices Question-Based for Knowledge Valuation in Fundamental Electronics”, Proceedings of the 3rd Advanced Training Course of Mixed Design of Integrated Circuits and Systems, pp. 601-605, Lodz, Poland, 30 May – 1 June 1996.
1996 Marina Dana Ţopa, A. Burian, “Symbolic Network Analysis for Automated Design”, Proceedings of the Automatic Control and Testing Conference, pp. 187- 192, Cluj-Napoca, Romania, 23-24 May 1996.
1996 Marina Dana Ţopa, E. Simion, “Computer-Aided Analysis of Linear Passive Ladder Networks”, Proceedings of the Automatic Control and Testing Conference, pp. 193-196, Cluj-Napoca, Romania, 23-24 May 1996.
1995 Marina Dana Ţopa, E. Simion, “Sensitivity Analysis of Linear Passive Ladder Networks”, Proceedings of the 8th International Symposium on Theoretical Electrical Engineering ISTET, pp. 466-469, Thessaloniki, Greece, September 1995.
1994 Marina Dana Ţopa, E. Simion, “Symbolic Sensitivity for Analog Circuit Design”, Proceedings of the Symposium on Electronics and Telecommunications, pp. 57-61, Timisoara, Romania, 29-30 September 1994.
1994 Marina Dana Ţopa, E. Simion, “On Symbolic Analysis for Analog Filter Design”, Proceedings of the 4th International Conference on Optimization of Electric and Electronic Equipments, pp. 181-185, Brasov, Romania, 12-14 May 1994.
1993 Marina Dana Ţopa, Victor Popescu, “Estimation of the Effects of Lossy Elements in Reactive Linear Elements”, Proceedings of the International Symposium on Signals, Circuits and Systems, pp. 59-61, Iasi, Romania, 4-5 November 1993.
1987 E. Simion, D. Micu, Marina Dana Ţopa, V. Ţopa, “On a Numerical Method for Calculating the Inductances of Superconducting Coils”, Proceedings of the Conference on Optimization of Electrical, Electronic Driving, Automation and Computing Equipments, vol. I, pp. 47-51, Brasov, Romania, 1987.
1987 I. A. Viorel, Marina Dana Ţopa, M. M. Radulescu, V. Iancu, Z. Kovacs, M. Ivan, “Comparative Field Analysis Approach in the Computer-Aided Design of Sawyer Liniar Motors”, Proceedings of the International Conference on Electrical Machines BICEM’87, Vol.1, pp. 118-121, Beijing, China, 10-14 August 1987.
2009 Norbert Toma, Marina Ţopa, “Modelarea şi optimizarea acusticii încăperilor”, Volumul Simpozionului naţional “Edmond Nicolau”, ISBN 978-973-53-0017-3, Vol. I, pp.1530-156, Cluj-Napoca, 2009.
2007 Irina Dornean, Marina Ţopa, Botond Sandor Kirei, Erwin Szopos, “System Identification with Least Mean Square Adaptive Algorithm”, Proceedings of the International Intredisciplinarity in Engineering (InterIng 2007),  ISSN 1843-780X, 4 pages, Târgu-Mureş, România, 15-16.11.2007.
2007 Botond Sandor Kirei, Marina Ţopa, Irina Dornean, Fazakas Albert, “Simulink Modeling of Image Rejection Algorithms”, Proceedings of the International Intredisciplinarity in Engineering (InterIng 2007),  ISSN 1843-780X, 6 pages, Târgu-Mureş, România, 15-16.11.2007.
2007 Botond Sandor Kirei, Irina Dornean, Albert Fazakas, Marina Ţopa, “ Comparing VHDL and Verilog”, Proceedings of the International Scientific Conference microCAD, ISBN 978-963-661-751-6, pp. 35-40, Miskolc, Hungary, 22-23 March, 2007.
2005 Norbert Toma, Marina Ţopa, Erwin Szopos, Aurel Vlaicu, “Time-Variant Simple and Complex Audio Effects”, Proceedings of the 8th COST #276 Workshop, on CD, Trondheim, Norway, 26-27 May 2005.
2005 Marina Ţopa, Liviu Nedelea, Marius Neag, Lelia Feştilă, “Computer-Aided Design of Cascaded Active Orthogonal Filters”, Proceedings of the 3rd International Workshop on Advances in Numerical Computation Methods in Electromagnetism ANCME2005, ISBN 973-686-845-1, pp. 66-73, Bruxelles, Belgium, 26-27 May 2005.
2005 Marina Ţopa, Sergiu Mureşan, Florin Bud, “On Neural Algorithms for Blind Audio Source Separation”, Proceedings of the 3rd International Workshop on Advances in Numerical Computation Methods in Electromagnetism ANCME2005, pp. 74-81, Bruxelles, Belgium, 26-27 May 2005.
2005 Albert Fazakas, Marina Ţopa, Marius Neag, Lelia Feştilă, “Self calibrating System for IspPAC30 – Based Applications”, Proceedings of the 3rd International Workshop on Advances in Numerical Computation Methods in Electromagnetism ANCME2005, pp. 82-93, Bruxelles, Belgia, 26-27 May 2005.
2005 Florin Bud, Sergiu Mureşan, Marina Ţopa, “Simularea algoritmilor adaptivi neuronali pentru separarea semnalelor audio”, Verificatori biometrici, workshop cu participare internaţională,  ISBN 973-656-918-7, pp. 241-250, Cluj-Napoca, Romania, 26-27 May 2005.
2005 Erwin Szopos, Marina Ţopa, Norbert Toma, “Unknown System Modeling by Using Adaptive Algorithms”, Proceedings of the 36th International Scientific Symposium of the Military Equipment and Technologies Research Agency, ISBN 973-0-03923-2, pp. 244-249, Bucharest, Romania, 26-27 May 2005.
2005 Liviu Nedelea, Marina Ţopa, Gabriel Oltean, Lelia Feştilă, “Component Modeling and Sensitivity Analysis for Analog Filters Design”, Proceedings of the 36th International Scientific Symposium of the Military Equipment and Technologies Research Agency, ISBN 973-0-03923-2, pp. 266-271, Bucharest, Romania, 26-27 May 2005.
2005 Norbert Toma, Marina Ţopa, Erwin Szopos, “Obtaining Some Simple and Complex Sound Effects Using Digital Signal Processing Methods”, Proceedings of the 36th International Scientific Symposium of the Military Equipment and Technologies Research Agency, ISBN 973-0-03923-2, pp. 324-329, Bucharest, Romania, 26-27 May 2005.
2004 Lelia Feştilă, Albert Fazakas, Mihaela Cîrlugea, Robert Groza, Marina Ţopa, „Low Voltage Linear Circuits Based on Nonlinear Building Blocks”, Proceedings of the Conference of Energetics and Electrical Engineering ENELKO 2004, pp. 66-72, Cluj, Romania, ISBN 973-86852-9-x, October 8-10, 2004.
2004 Marina Ţopa, Norbert Toma, Erwin Szopos, “Efficient Reverberation Algorithms”, Cel de al XXXV-lea Simpozion de Comunicări Ştiinţifice al Agenţiei de Cercetare pentru Tehnică şi Tehnologii militare, ISBN 973-0-03501-6, on CD, Bucharest, Romania, May 27-28 2004.
2004 Marina Ţopa, Norbert Toma, Erwin Szopos, “Design and Simulation of Reverberation Algorithms”, Proceedings of the 6th Cost 276 Workshop on Information and Knowledge Management for Integrated Media Communication, ISBN 960-88136-0-3, pp. 139-144, Thessaloniki, Greece, May 6-7 2004.
2003 Marina Ţopa, Liviu Nedelea, Marius Neag, “Automated Generation of  Transfer Function for Analog Filter Design”, Proceedings 2nd International Workshop on Advances in Numerical Computation Methods in Electromagnetism ANCME2003, pp. 125-132, Gent, Belgia, May, 15-16, 2003.
2002 C. Porumb, S. Catana, S. Cristea, Marina Ţopa, A. Vlaicu – “Information Management using Multi-Agent Platform Systems”, Third COST #276 Workshop on Information and Knowledge Management for Integrated Media Communication, pp. 49-52, Budapest, Hungary, October 11-12, 2002.
2002 Aurel Vlaicu, Marina Ţopa, Cosmin Porumb, Mircea Romantan, S. Gordea, “IntelCOM – „Intelligent Communication Environment using Multiagent Systems”, Second COST #276 Workshop on Information and Knowledge Management for Integrated Media Communication, Florence, Italy, March 25-26, 2002.
2002 C. Porumb, B. Orza, S. Gordea, S. Catana, M. Romantan, S. Cristea, C. Hutanu, Marina Ţopa, A. Vlaicu, “Integrated Environment for Distance Education”, Third COST #276 Workshop on Information and Knowledge Management for Integrated Media Communication, pp. 7-10, Budapest, Hungary, October 11-12, 2002.
1999 Adrian Gogu, Marina Dana Ţopa, “Short-time Signals Analysis Classes using Virtual Instrumentation”, Proceedings of the 2nd International Workshop CAD in Electromagnetics and Electrical Circuits CADEMEC’99, pp. 116-119, Cluj-Napoca, Romania, 7-9 September 1999.
1999 Adrian Gogu, Marina Dana Ţopa, Victor Popescu, “Virtual Instrumentation and Analog Signals Analysis”, Proceedings of the 5th International Workshop Bases of Electronics SBE’99, pp. 84-91, Cluj-Napoca, Romania, 10-11 June 1999.
1999 Marina Dana Ţopa, Lelia Festila, Adrian Burian, Marius Neag, “Computer-Assisted Learning for Bases of Electronics. From LAN to Hypermedia Implementation”, Proceedings of the 5th International Workshop Bases of Electronics SBE’99, pp. 265-268, Cluj-Napoca, Romania, 10-11 June 1999.
1999 Jose-Ramon Beltran, Fernando A. Beltran, Marina Dana Ţopa, Dorin Bogdan, “On Discrete Wavelet Transform in Image Processing”, Proceedings of the 5th International Workshop Bases of Electronics SBE’99, pp. 11-24, Cluj-Napoca, Romania, 10-11 June 1999.
1998 Vasile Ţopa, Calin Munteanu, Emil Simion, Marina Dana Ţopa, “Optimal Pole Shape Design of a SRM Motor using the Genetic Algorithm Method”, Proceedings of the ATEE Conference, pp. 17-22, Bucharest, Romania, 1998.
1998 Vasile Ţopa, Marina Dana Ţopa, Lelia Feştilă, Emil Simion, “Regional Network of Continuing Education Centres in Electrical Engineering”, Proceedings of the Tempus Conference: Universities in Social and Economical Environment, pp. 178-183, Braşov, Romania, 5-7 November 1998.
1998 Adrian Burian, Daniel Zinca, Marina Dana Ţopa, Pauli Kuosmanen, “Hypermedia Education Environment for Circuits and Systems. Implementation and Support”, Proceedings of the Conference Sharing Experience to Increase Internationalizatiom and Globalization in Engineering Education, pp. 364-367, Mannheim, Germany, 17-19 September 1998.
1997 Marina Dana Ţopa, E. Simion, “Symbolic Time- Analysis for Electrical Weakly Nonlinear Circuits” (in Romanian), Proceedings of the Symposium on Symbolic Network Analysis, Bucharest, Romania, 5 December 1997.
1997 Marina Dana Ţopa, P. Wambacq, G. Gielen, W. Sansen, E. Simion, “Postprocessing Techniques for Approximate Symbolic Analysis of Large Electrical Circuist” (in Romanian), Proceedings of the Symposium on Symbolic Network Analysis, Bucharest, Romania, 5 December 1997.
1997 Marina Dana Ţopa, E. Simion, “On the Transient Analysis of Weakly-Nonlinear Circuits”, Proceedings of the Workshop on Basis of Electronics SBE’97, pp. 49-54, Cluj-Napoca, Romania, 17-18 October 1997.
1997 Marina Dana Ţopa, A. Burian, M. Neag, Lelia Festila, “MeDIAC – “A Computer Media for Electronical Engineering Education”, Proceedings of the Workshop on Basis of Electronics SBE’97, pp. 267-272, Cluj-Napoca, Romania, 17-18 October 1997.
1997 Marina Dana Ţopa, E. Simion, “Symbolic Transient Analysis for Weakly Nonlinear Circuits”, Proceedings of the 1st International Workshop CAD in Electromagnetism and Electrical Circuits CADEMEC’97, pp. 87-90, Cluj-Napoca, Romania, 5-7 August 1997.
1997 Marina Dana Ţopa, A. Burian, M. Neag, Lelia Festila, “Interactive Learning and Evaluation in Electronical Engineering using a Low-Cost Computer Network”, Proceedings of the 4th International Workshop Mixed Design of Integrated Circuits and Systems MIXDES’97, pp. 697-700, Poznan, Poland, 12-14 June 1997.
1996 Marina Dana Ţopa, E. Simion, “Computer-Aided Symbolic Network Analysis”, Proceedings of the 2nd National Seminar on Theoretical Electrotechnics, pp. 141-147,  Bucharest, Romania, 19-20 April 1996.
1995 Marina Dana Ţopa, “Symbolic Analysis of SC Circuits”, Proceedings of the 2nd Advanced Training Course Mixed Design of VLSI Circuits, pp. 187-192, Krakow, Poland, 29-31 May 1995.
1994 Marina Dana Ţopa, “Generation of Network Functions for Analog Design”, Proceedings of the Workshop on Basis of Electronics SBE’94, pp. 9-14, Cluj-Napoca, Romania, 27-28 October 1994.
1994 Marina Dana Ţopa, “Sensitivity Analysis of Large Passive Ladder Networks”, Proceedings of the Workshop on Basis of Electronics SBE’94, pp. 48-52, Cluj-Napoca, Romania, 27-28 October 1994.
1993 Marina Dana Ţopa, V. Crisan, “Computer-Aided Design of a Class of Active Filters”, Proceedings of the Workshop on Basis of Electronics SBE’93, pp. 44-47, Cluj-Napoca, Romania, 17-18 September 1993.
1993 Marina Dana Ţopa, E. Simion, “Sensitivity Analysis of Passive Ladder Circuits”, Proceedings of the Workshop on Basis of Electronics SBE’93, Cluj-Napoca, Romania, 17-18 September 1993, pp. 9-12.
1991 Marina Dana Ţopa, E. Simion, “Computer Program for Passive Filter Design” – Proceedings of the XIInd Scientific Symposium of the Marine Institute “Mircea cel Batrân“, vol. I, Constanţa, Romania, 20 May 1991.
1991 E. Simion, D. Micu, Marina Dana Ţopa, “Numerical Analysis of the Electromagnetic Fields of an Electromagnet Used in the Textile Industry in Unconventional Technologies”, Proceedings of the 11th International Symposium on Industrial Automation, Chemnitz, Germany, 12-14 February 1991.
1988 E. Simion, Marina Dana Ţopa, G. Roth, S. Darie, V. Ţopa, “ Analiza numerică a câmpului magnetic al unui vibromotor”, Proceedings of the Symposium “Vibrotehnica”, pp. 20-27, Cluj-Napoca, Romania, 3-6 November 1988.
1988 E. Simion, V. Ţopa, Marina Dana Ţopa, D. Micu, “ Calculul analitic al inductivităţilor proprii şi mutuale pentru bobine cilindrice cu un singur strat de spire”, Proceedings of the 2nd National Symposium: Achievements and Future Developments of Transducers for Measurement Equipment, pp. 255-260, Cluj-Napoca, Romania, 3-5 November 1988.
1988 E. Simion, V. Ţopa, D. Micu, Marina Dana Ţopa, “, “Calculul inductivităţii bobinelor cilindrice în prezenţa ecranelor feromagnetice”, Buletinul sesiunii de comunicări ştiinţifice şi referate al Institutului de marină Mircea cel Bătrân,  Constanta, Romania, 27-28 May 1988, pp. 187-192.
1986 E. Simion, D. Micu, Marina Dana Ţopa, V. Ţopa, ““Consideraţii teoretice şi calculul numeric al unor bobine supraconductoare”, Proceedings of the IVth National Symposium on Superconductivity and Cryoelectrotehnics, pp. 123-127, Craiova, Romania, November 1986.
1986 E. Simion, Marina Dana Ţopa, V. Ţopa, D. Micu, “ Determinarea prin metode numerice de câmp a caracteristicii unui traductor inductiv de deplasare”, Proceedings of the National Symposium: Achievements and Future Developments of Transducers for Measurement Equipment, vol.II, pp. 354-357, Cluj-Napoca, Romania, 23-24 October 1986.
1986 E. Simion, Marina Dana Ţopa, “ Calculul numeric al câmpului într-un cablu, luând în consideraţie incluziunile accidentale din izolaţie” , Proceedings of the Scientific Session of the Technical University of Iaşi, vol. I, pp. 29-34, Iasi, Romania, 16-17 May 1986.
1986 Marina Dana Ţopa, I. A. Viorel, “Computer-aided Modeling of the Magnetic Circuit of a Liniar Motor with Variable Reluctance and Permanent Magnet” (in Romanian), Proceedings of the National Symposium Electromotor: Trends in the Design and Manufacturing of Electric Machines, pp. 27-34, Timişoara, Romania, April 1986.
1984 I. A. Viorel, Z. Kovacs, Marina Dana Ţopa, M. M. Radulescu, M. Ivan, “ Modelarea pe calculatorul numeric a circuitului magnetic al unui motor liniar cu reluctanţă variabilă şi magnet permanent”, Proceedings of the national conference on electrotechnics and electroenergetics, vol.6, pp. 173-183, Craiova, Romania, 20-21 September 1984.
1984 T. Colosi, Marina Dana Ţopa, “ Extinderea liniarizării local temporale a soluţiei a ecuaţiilor cu derivate parţiale”, Proceedings of the Third National Symposium on Systems Theory, vol. 1, pp. 182-187, Craiova, Romania, 20-21 September 1984.