Zhangxin (John) Chen

Research Presentations


``Prismatic Mixed Finite Elements'' (seminar), Department of Mathematics, Purdue University, West Lafayette, March 1989.

``Local Volume Averaging and Homogenization'' (seminar), Department of Mathematics, Purdue University, West Lafayette, October 1989.

``Modeling of Compositional Flow in Fractured Reservoirs'' (colloquium), Department of Mathematics, Lamar University, Beaumont, April 1990.

``Mixed Finite Element Methods for Second Order Elliptic Problems'' (colloquium), Department of Mathematics, Kansas State University, Manhattan, Kansas, February 1991.

``Mixed Finite Element Methods for Nonlinear Second Order Elliptic Problems'' (colloquium), Department of Mathematics, Northern Illinois University, Dekalb, Illinois, March 1991.

``Relationship between Mixed and Nonconforming Finite Elements'' (colloquium), Purdue University, West Lafayette, July 1991.

``Mixed Finite Element Methods'' (colloquium), IMA, University of Minnesota, Minneapolis, November 1991.

``Modelling of Compositional Flow in Fractured Porous Media'' (invited talk), Workshop on Environmental Studies, IMA, Minneapolis, July 1992.

``Numerical Analysis of Semiconductor Devices'' (invited minisymposium talk), SIAM 40th Anniversary Meeting, Los Angeles, California, July 1992.

``Finite Element Simulation of the Hydrodynamic Model for Semiconductor Devices'' (colloquium), AHPCRC, University of Minnesota, December 1992.

``Numerical Methods for the Hydrodynamic Model in Semiconductor Devices'' (colloquium), Department of Mathematics, Iowa State University, Ames, Iowa, January 1993.

``Semiconductor Modeling'' (colloquium), Department of Mathematics, University of North Carolina, Wilmington, February 1993.

``Dual-Porosity Models of Compositional Flow in Fractured Reservoirs'' (contributed talk), SIAM Conference on Mathematical and Computational Issues in the Geosciences, Houston, Texas, April 1993.

``Runge-Kutta Local Projection Discontinuous Galerkin Methods for Conservation Laws and Applications to the Hydrodynamic Device Model'' (contributed talk), 8th International Conference on the Math of Finite Elements and Applications, Brunel University, Uxbridge, Middlesex, UK, April 1993.

``Finite Element Methods for the Hydrodynamic Model in Semiconductor Devices'' (invited minisymposium talk), 6th SIAM Conference on Parallel Processing for Scientific Computing, Norfolk, Virginia, March 1993.

``Mixed-RKDG Finite Element Methods for the Hydrodynamic Model for Semiconductor Device Simulation'' (colloquium), Department of Mathematics, Texas A&M University, College Station, Texas, April 1993.

``L^p-Posteriori Error Analysis of Mixed Methods for Linear and Quasilinear Elliptic Problems'' (invited talk), Workshop on Modeling, Adaptivity, and Mesh Generation for Partial Differential Equations, IMA, Minneapolis, July 1993.

``Modeling of and Numerical Methods for Compositional Flow in Naturally Fractured Reservoirs'' (contributed talk), CMWR'94, Heidelberg, Germany, July 1994.

``Finite Elements for the Quantum Hydrodynamic Model for Semiconductor Devices'' (invited minisymposium talk), SIAM 42nd Anniversary Meeting, San Diego, July 1994.

``Three Models of Compositional Flow in Petroleum Reservoirs'' (invited talk), Workshop on Finite Element Modeling of Envir. Problems, Austin, March 1994.

``From the Classical Model to the Quantum Hydrodynamic Model: Semiconductor Modeling'' (colloquium), Department of Mathematics, Texas A&M University, College Station, Texas, May 1994.

``Modeling of Compositional Flow'' (colloquium), University of Bergen, Norway, July 1994.

``From the Classical Model to the Quantum Hydrodynamic Model: Semiconductor Modeling'' (colloquium), IBM, Yorktown Heights, January 1995.

``Mathematical Models and Numerical Methods for Reservoir Simulation'' (colloquium), IBM, Yorktown Heights, New York, January 1995.

``Mixed Finite Element Methods and their Applications'' (colloquium), AT&T Bell Labs, Murray Hill, NJ, February 1995.

``Mixed Finite Element Methods and their Applications'' (colloquium), Colorado State University, Fort Collins, Colorado, February 1995.

``Mixed and Nonconforming Methods for Second Order Elliptic Problems: Equivalence and Implementation" (contributed talk), Texas Finite Element Circus, College Station, Texas, February 1995.

``Mixed Finite Element Methods and their Applications'' (colloquium), Southern Methodist University, Dallas, Texas, March 1995.

``Recent Development of Multigrid Algorithms for Mixed and Nonconforming Methods for Second Order Elliptic Problems'' (invited minisymposium talk), Eighth Copper Mountain Conference on Multigrid Methods, Copper Mountain, Colorado, April 1995.

``Recent Development of Multilevel Preconditioners for Mixed and Nonconforming Finite Element Methods'' (invited talk), Symposium on Advances and Trends in Computational and Applied Mathematics, Austin, Texas, April 1995.

``Recent Development of Domain Decomposition Methods and Multilevel Preconditioners for Nonconforming and Mixed Methods for Second Order Elliptic Problems'' (contributed talk), the Eighth International Conference on Domain Decomposition Methods, Beijing, China, May 1995.

Organizing a special session ``Multigrid Methods'' in the Eighth International Conference on Domain Decomposition Methods, Beijing, China, May 1995.

``Recent Development of Domain Decomposition Methods and Multilevel Preconditioners for Nonconforming and Mixed Methods for Second Order Elliptic Problems'' (colloquium), Xi'an Jiaotong University, Xi'an, China, May 1995.

``Numerical Methods in Semiconductor Devices'' (colloquium), Korea Advanced Institute of Science and Technology, Taejon, Korea, June 1995.

``On the Convergence of Nonconforming Multigrid Methods'' (contributed talk), The Texas Finite Element Rodeo, University of Houston, Houston, Texas, March 1996.

``Mathematical Models in Porous Media'' (invited talk), the Symposium dedicated to Richard Ewing on the occasion of his 50th birthday, Texas A&M University, College Station, Texas, November 1996.

``Convergence of Multigrid Methods for Nonconforming Finite Elements'' (contributed talk), Texas Finite Element Rodeo, Austin, Texas, February 1997.

``Homogenization of Porous Media'' (colloquium), Mobil Technology Company, March 1997.

``The Analysis of Nonconforming Multigrid Methods and Intergrid Transfer Operators'' (invited minisymposium talk), the 8th Copper Mountain Conference on Multigrid Methods Copper Mountain, Colorado, April 1997.

``Mathematical Models, Theoretical Results and Numerical Methods for Multiphase Flow in Porous Media'' (contributed talk), the Fourth SIAM Conference on Mathematical and Computational Issues in the Geosciences, Albuquerque, New Mexico, June 1997.

``Convergence of Multigrid Methods for Nonconforming Finite Elements'' (invited talk), Third IMACS International Symposium on Iterative Methods in Scientific Computation, Jackson Hole, Wyoming, July 1997.

Organizing a special session ``Adaptive and Iterative Methods'' in the Third IMACS International Symposium on Iterative Methods in Scientific Computation, Jackson Hole, Wyoming, July 1997.

``Convergence of Multigrid Methods for Nonconforming Finite Elements'' (contributed talk), the Tenth International Conference on Domain Decomposition Methods, Boulder, Colorado, August 1997.

``Multigrid Methods for Nonconforming Finite Elements'' (colloquium), Southern Methodist University, November 1997.

``Multiphase Flow in Porous Media: Regularity, Uniqueness, and Error Analysis'' (contributed talk), The Texas Finite Element Rodeo, College Station, Texas, March 1998.

``Mathematical and Numerical Results for Multiphase Flow in Porous Media'' (invited minisymposium talk), the American Mathematical Society regional meeting, Manhattan, Kansas, March 1998.

``Mathematical and Numerical Analysis for Multiphase Flow in Porous Media'' (colloquium), the Chinese University of Hong Kong, Hong Kong, June 1998.

Co-organizing the Second International Conference on Bifurcation Theory and its Numerical Analysis, Xi'an, P. R. China, July 1998.

``Multiphase Flow in Porous Media'' (invited talk), the Second International Conference on Bifurcation Theory and its Numerical Analysis, Xi'an, June 1998.

``On the Convergence of Galerkin-Multigrid Methods for Nonconforming Finite Elements'' (colloquium), Xi'an Jiaotong University, Xi'an, China, July 1998.

``On the Convergence of Galerkin-Multigrid Methods for Nonconforming Finite Elements'' (colloquium), the Chinese Academy of Sciences, Beijing, China, July 1998.

``Mathematical and Numerical Analysis for Multiphase Flow in Porous Media'' (invited talk), An International Workshop on State of the Art in the Finite Element Method, Hong Kong, July 1998.

``On the Convergence of Galerkin-Multigrid Methods for Nonconforming Finite Elements'' (invited talk), the Seventh International Colloquium on Numerical Analysis and Computer Sciences, Plovdiv, Bulgaria, August 1998.

``Recent Results in Porous Media Flows'' (invited talk), the Ninth International Colloquium on Differential Equations, Plovdiv, Bulgaria, August 1998.

``Mathematical and Numerical Analysis for Multiphase Flow in Porous Media'' (colloquium), Texas Tech University, Lubbock, Texas, September 1998.

``Degenerate Two-Phase Incompressible Flow: Local Refinement and Domain Decomposition'' (contributed talk), The Texas Finite Element Rodeo, Houston, Texas, March 1999.

``Multigrid and Multilevel Techniques for Applications of Multiphase Fluid Flow in Porous Media'' (invited minisymposium talk), the SIAM Conference on Mathematical and Computational Issues in the Geosciences, San Antonio, Texas, March 1999.

Organizing a special session ``Computational Issues in Numerical Simulation of Multiphase Flow in Porous Media'', the SIAM Conference on Mathematical and Computational Issues in the Geosciences, San Antonio, Texas, March 1999.

``Convergence of the Wilson Nonconforming Finite Element'' (invited minisymposium talk), the 9th Copper Mountain Conference on Multigrid Methods Copper Mountain, Colorado, April 1999.

``Recent Developments in Simulation of Multiphase Fluid Flow in Porous Media'' (invited talk), An International Workshop on Computational Physics: Fluid Flows and Transport in Porous Media, Beijing, China, August 1999.

Co-organizing an International Workshop on Computational Physics: Fluid Flows and Transport in Porous Media, Beijing, China, August 1999.

``Mathematical Analysis and Numerical Simulation of Multiphase Flow in Porous Media'' (colloquium), INRIA, Le Chesnay Cedex, France, January 2000.

``Mathematical Analysis and Numerical Simulation of Multiphase Flow in Porous Media'' (invited talk), The Mathematics of Porous Media, Oberwolfach, Germany, January 2000.

``Mathematical and Computational Challenges in Energy and Environmental Modeling'' (The Sigma Xi talk), Southern Methodist University, February 2000.

``On the Relationship of Various Discontinuous Galerkin Methods for Second-Order Elliptic Problems'' (contributed talk), The Finite Element Circus/Rodeo, Austin, Texas, February 2000.

``Mathematical Analysis and Numerical Simulation of Multiphase Flow in Porous Media'' (colloquium), University of Wyoming, Laramie, March 2000.

``Mathematical Analysis and Numerical Simulation of Multiphase Flow in Porous Media'' (invited minisymposium talk), Finite Elements in Flow Problems 2000, Austin, Texas, April-May 2000.

Co-chairing a session ``Numerical Methods'' at the Finite Elements in Flow Problems 2000, Austin, Texas, April-May 2000.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), Shanghai Jiaotong University, Shanghai, June 2000.

``New Conservative Finite Element Schemes'' (colloquium), Xi'an Jiaotong University, Xi'an, June 2000.

``Mathematical Models in Reservoir Simulation'' (contributed talk), An International Conference on PDEs and their Computational Methods, Lushan, Jiangxi, June 2000.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (invited talk), The Annual Conference on Computational Mathematics, Qinghai, August 2000.

``Mixed Discontinuous Finite Element Methods for Second Order Problems'' (contributed talk), Finite Element Circus, Rutgers University, New Jersey, October 2000.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), University of Texas at Arlington, Arlington, Texas, January 2001.

``Relationships Among Characteristic Finite Element Methods for Advection-Diffusion Problems'' (contributed talk), Texas Finite Element Rodeo, Southern Methodist University, Dallas, Texas, March 2001.

``Mixed Discontinuous Finite Element Methods'' (colloquium), ExxonMobil, Houston, Texas, March 2001.

``Mixed Discontinuous Finite Element Methods and Their Applications'' (invited minisymposium talk), the American Mathematical Society regional meeting, Las Vegas, Nevada, April 2001.

``Industrial Mathematics'', SIAM Southwest Regional Mathematics in Industry Workshop, Houston, Texas, April 2001.

``Mixed Discontinuous Finite Element Methods for Multiphase Flows in Porous Media'' (invited minisymposium talk), the American Mathematical Society regional meeting, Morelia, Mexico, May 2001.

``Different Formulations and Numerical Methods for Multiphase Flows in Porous Media'' (invited minisymposium talk), SIAM Geosciences Conference, Boulder, Colorado, June 2001.

``Different Formulations and Numerical Methods for Multiphase Flows in Porous Media'' (invited talk), AMS, SIAM, and IMS Joint Summer Research Conference, South Hadley, Massachusetts, June 2001.

``A Series of Talks on Finite Element Methods and Their Applications in Industry'', Summer School, Center of Computational Physics, Beijing, China, July 2001.

``Mathematical and Computational Techniques in Petroleum Reservoirs'' (colloquium), Research Institute of Petroleum Exploration and Develpment, PetroChina Company Limited, Beijing, China, July 2001.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), Department of Computational Mathematics, Beijing University, Beijing, China, July 2001.

``New Technology in Reservoir Simulations'' (colloquium), PDVSA-Intevep, Venezuela, August 2001.

``New Technology in Reservoir Simulations'' (colloquium), China National Petroleum Corp. (CNPC), Caracas, Venezuela, August 2001.

``New Technology in Reservoir Simulations'' (colloquium), University of Houston, Texas, October 2001.

``New Technology in Reservoir Simulations'' (colloquium), Texas A&M University, Commerce, Texas, November 2001.

``A Series of Talks on Discontinuous Galerkin Methods'' (invited talk), Workshop on Scientific Computation, National Center for Theoretical Sciences, National Tsing-Hua University, Taiwan, February 2002.

``Recent Developments in Reservoir Simulation'', The Texas Finite Element Rodeo, Texas A&M University, College Station, Texas, March 2002.

``Recent Developments in Reservoir Simulation'' (colloquium), State University of New York, Stony Brook, April 2002. 2002.

``Recent Developments in Reservoir Simulation'' (colloquium), China National Petroleum Corp. (CNPC), Caracas, Venezuela, May 2002.

``Mixed Discontinuous Finite Element Methods and Their Applications to Fluid Flows'' (invited minisymposium talk), SIAM Annual Meeting, Philadephia, July 2002.

``Discontinuous and Characteristic Finite Elements'' (colloquium), National Center for Theoretical Sciences, National Tsing-Hua University, Taiwan, July 2002.

``A Series of Talks on Finite Element Methods and Their Applications in Industry'', Summer School, College of Sciences, Xi'an Jiaotong University, Xi'an, China, August 2002.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (invited talk), The Fifth National Conference of Computational Physics, Xi'an, China, August 2002.

``Recent Developments in Reservoir Simulations'' (invited talk), ICM2002-Beijing Satellite Conference on Scientific Computing, Xi'an, China, August 2002.

``Numerical Reservoir Simulation'' (colloquium), Center for Computational Sciences, University of Kentucky, October 2002.

``Numerical Reservoir Simulations'' (invited talk), Numerical Analysis Conference Honoring Professor Raytcho Lazarov on the Occasion of his 60th Birthday, College Station, Texas, January 2003.

``Stability and Convergence of Mixed Discontinuous Finite Element Methods for Second-Order Differential Problems'' (contributed talk), The Texas Finite Element Rodeo, Houston, Texas, March 2003.

``Mathematical and Computational Techniques in Energy and Environmental Modeling" (invited talk), The EPA Regional Science Council Meeting, Dallas, Texas, May 2003.

``An Interactive Simulation Platform and its Industrial Applications" (invited minisymposium talk), the Second MIT Conference on Computational Fluid and Solid Mechanics, MIT, Massachusetts, June 2003.

``Analysis and Numerics for Multiphase Flow in Porous Media" (Key-note presentation), the Second MIT Conference on Computational Fluid and Solid Mechanics, MIT, Massachusetts, June 2003.

``Reservoir Simulation" (One of four invited instructors), Workshop on Computational Fluid Dynamics, Center for Mathematical Research (CIMAT), Guanajuato, Mexico, June 2003.

``Numerical Reservoir Simulation" (colloquium), Department of Mathematics, Unversity of Nevada at Las Vegas, Nevada, October 2003.

``An Overview on Discontinuous Finite Element Methods" (colloquium), Department of Mechanical Engineering and Nevada Center for Advanced Computational Methods, Unversity of Nevada at Las Vegas, Nevada, October 2003.

``Numerical Reservoir Simulation" (special seminar), Department of Mathematics, Princeton University, New Jersey, November 2003.

``New Technology in Reservoir Simulation" (plenary talk), The IX Mexican Congress of Fluids, Mexico City, Mexico, November 2003.

``A Series of Talks on Reservoir Simulation and Ground Water Modeling" (invited talks), Mexican Institute of Petroleum, Mexico City, Mexico, November 2003.

``New Technology in Reservoir Simulation'' (key-note talk), International Workshop on Efficient Techniques for Numerical Solutions of Coupled PDEs and Applications to Reservoir Simulation, Institute for Studies in Theoretical Physics and Mathematics, Tehran, Iran, December 2003.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (plenary talk), International Workshop on Efficient Techniques for Numerical Solutions of Coupled PDEs and Applications to Reservoir Simulation, Institute for Studies in Theoretical Physics and Mathematics, Tehran, Iran, December 2003.

``New Technology in Reservoir Simulation'' (invited talk), Research Institute of Petroleum Industry, Tehran, Iran, December 2003.

``Numerical Reservoir Simulation'' (colloquium), Department of Mathematics, University of Houston, Houston, Texas, March 2004.

``Numerical Reservoir Simulation'' (colloquium), Department of Mathematics, Baylor University, Waco, Texas, March 2004.

``Numerical Reservoir Simulation'' (colloquium), Department of Mathematics, Wayne State University, Detroit, Michigan, May 2004.

``New Technology in Reservoir Simulation'' (invited talk), Power Energy and Environmental Research Center, California Institute of Technology, California, June 2004.

``New Technology in Reservoir Simulation'' (invited minisymposium talk), The AIMS Fifth International Conference on Dynamical Systems and Differential Equations, California State Polytechnic University, Pomona, CA, USA, June 2004.

``Parallel Computation for Multicomponent, Multiphase Flows in Porous Media'' (invited minisymposium talk), The AIMS Fifth International Conference on Dynamical Systems and Differential Equations, California State Polytechnic University, Pomona, CA, USA, June 2004.

``Opportunities and Challenges in Computational Sciences'' (colloquium), College of Computer Science and Engineering, Shanghai University, Shanghai, China, July 2004.

``Opportunities in Development of the Next Generation of Petroleum Reservoir Simulators'' (colloquium), College of Science, Xi'an Jiaotong University, Xi'an, China, July 2004.

``Scanning Technology's Application in Reservoir Simulation'' (invited talk), International Conference on 3D CT Graphing Technology, Xi'an, China, July 2004.

``Control Volume Methods'' (invited talk), International Conference on 3D CT Graphing Technology, Xi'an, China, July 2004.

``Opportunities and Challenges in Development of the Next Generation of Petroleum Reservoir Simulators'' (plenary talk), Three National Conferences on Computational Mathematics, Ulmqi, Xinjiang, August 2004.

``Control Volume Finite Element Methods'' (colloquium), Institute of Applied Physics and Computational Mathematics, Beijing, China, August 2004.

``Parallel Computations in Reservoir Simulation'' (invited talk), Analysis, Modeling and Computation of PDEs and Multiphase Flow in Celebration of James Glimm's 70th Birthday, SUNY at Stony Brook, New York, August 2004.

``Computing Technologies in Reservoir Simulation'' (plenary talk), an International Conference on Scientific Computing in Petroleum Industry, Jiuhua Resort, Beijing, China, August 2004.

``High Performance Computing in Reservoir Simulation'' (plenary talk), The International Conference on High Performance Computing and Applications, Shanghai University, Shanghai, China, August 2004.

``Opportunities in Development of the Next Generation of Petroleum Reservoir Simulators'' (colloquium), Ding Tech Comp., Shanghai, China, August 2004.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), University of Manitoba, Winnipeg, Canada, December 2004.

``Discontinuous Finite Element Methods'' (colloquium), Institute of Applied Physics and Computational Mathematics, Beijing, China, December 2004.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), Beijing University, Beijing, China, December 2004.

``Unstructured Grid Techniques in Petroleum Reservoir Simulations'' (seminar), Institute for Scientific Computation, Texas A&M University, College Station, Texas, February 2005.

``Unstructured Grid Techniques in Petroleum Reservoir Simulations'' (invited talk), a workshop on Fluid Mixing by Permedia, BP, Unocal, ExxonMobil, Anadarko, Total, and ConocoPhillips, Houston, Texas, February 2005.

``Unstructured Grid Techniques in Petroleum Reservoir Simulations'' (colloquium), Permedia Research Group, Ottawa, Canada, March 2005.

``Control Volume Finite Element Methods and Their Applications to Multiphase Flows in Porous Media'' (invited minisymposium talk), the Eighth U.S. National Congress on Computational Mechanics, Austin, Texas, July 2005.

``New Research Directions in Petroleum Reservoir Simulation'' (invited talk), Summer School on Partial Differential Equations, Xi'an Jiaotong University, Xi'an, China, July 2005.

``New Research Directions in Petroleum Reservoir Simulation'' (invited talk), Conference of Numerical Analysis and its Applications on the Occasion of Prof. Aixiang Huang's 70th Birthday, Hunan Normal University, Changsha, China, July 2005.

``Foamy Flows'' (seminar), China National Oil and Gas Exploration and Development Corporation, Beijing, China, July 2005.

``Control Volume Finite Element Methods and Their Applications to Petroleum Reservoir Simulation'' (colloquium), Institute of Computational Mathematics, Chinese Academy of Science, Beijing, China, July 2005.

``New Research Directions in Petroleum Reservoir Simulation'' (colloquium), Institute of Applied Physics and Computational Mathematics, Beijing, China, August 2005.

``Fluid Mixing Problems in Porous Media'' (seminar), ConocoPhillips, Houston, Texas, August 2005.

``Integrated Environmental Modeling'' (invited talk), Integrated Environmental Modeling Workshop in Texas, Southern Methodist University, Dallas, Texas, August 2005.

``Mathematical and Computational Techniques in Reservoir Simulation'' (colloquium), Department of Computational and Applied Mathematics, Rice University, Houston, Texas, September 2005.

``Fluid Mixing Instabilities'' (invited talk), a workshop on Reservoir Fluids and Fluid Mixing by Permedia, BP, BG, Unocal, ExxonMobil, Anadarko, Shell, Statoil Research, and ConocoPhillips, Houston, Texas, October 2005.

``Alternating Direction Methods for Mixed Finite Element Systems'' (invited talk), 50 Years of Alternating Direction Methods: Celebrating the Contributions of Jim Douglas, Don Peaceman, and Henry Rachford, Rice University, Houston, Texas, November 2005.

``Control Volume Finite Element Methods and Their Applications to Multiphase Flows in Porous Media'' (invited minisymposium talk), Joint AMS, MAA, and SIAM Mathematics Meetings. San Antonio, Texas, January 12-15, 2006.

``Mathematics and Calculus Education Reform'' (invited talk), International Symposium on Mathematics Education Reform, Beijing, China, March 20-22, 2006.

``Fluid Mixing for Porous Media Flows'' (invited talk), Oil Industrial Meeting, Ottawa, Canada, April 26--28, 2006.

``Parallel Computing in Petroleum Engineering'' (invited talk), Oil Industrial Meeting, Ottawa, Canada, April 26--28, 2006.

``Laboratory Experiments, Mathematical Modeling and Numerical Methods for Foamy Oil Reservoirs'' (invited talk), Fifth International Conference on Scientific Computing and Applications, May 18--21, 2006, University of Alberta, Edmonton, Alberta, Canada.

``Ten Lectures on Multiphase Flows in Porous Media'', The Distinguished Lecturer at the NSF-CBMS Regional Research Conference, University of Nevada, Las Vegas (UNLV), May 23--27, 2006.

``Mixed Finite Element Methods for Multiphase Flows in Porous Media'' (colloquium), Department of Applied Mathematics, National ChungHsing University, Taichung, Taiwan, June 2006.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), Department of Applied Mathematics, National Chiao Tung University, Hsinchu 30050, Taiwan, June 2006.

``Laboratory Experiments, Mathematical Modeling and Numerical Methods for Foamy Oil Reservoirs'' (colloquium), Institute of Applied Mathematics, Chinese Academy of Science, Beijing, China, June 2006.

``Computational Methods for Multiphase Flows in Porous Media'' (invited talk), The Launching Meeting on Networks and Heterogeneous Media, Maiori, Italy, June 21-23 2006.

``Heavy Oil Modeling and Simulation'' (invited talk), International Conference on Partial Differential Equations and Numerical Analysis, Changsha, Hunan, China, 22-26 June, 2006.

``Are New Energy Resources within Reach?'' (colloquium), Jiangxi University of Science and Technology, Ganzhou, Jiangxi, China, June 2006.

``Mathematical and Computational Techniques in Energy and Environmental Modeling'' (colloquium), Jiangxi University of Science and Technology, Ganzhou, Jiangxi, China, June 2006.

``Are New Energy Resources within Reach?'' (colloquium), Ganzhou Normal College, Ganzhou, Jiangxi, China, June 2006.

``Mathematical Problems in New Energy Resources Modeling'' (colloquium), Nanchang University, Nanchang, China, July 2006.

``Computational Methods for Multiphase Flows in Porous Media'' (invited lecture), International (NATO) Summer School on Modern Problems of Fluid Mechanics and Heat Transfer in Porous Media, July 2--8, 2006, Istanbul Technical University, Maslak-Istanbul, Turkey.

``Laboratory Experiments, Mathematical Modeling and Numerical Methods for Foamy Oil Reservoirs'' (invited talk), Workshop on Scientific Computing, Tsinghua University, Beijing, China, July 13--14, 2006.

``Multiphase Flow Simulation in Porous Media'' (invited talk), An International Conference on Scientific Computing Dedicated to Professor Qun Lin's 70th Birthday, Institute of Computational Mathematics, Chinese Academy of Science, Beijing, China, July 15--16, 2006.

``Multiscale Methods'' (colloquium), Institute of Applied Physics and Computational Mathematics, Beijing, China, July 2006.

``Finite Element Methods for 2nd and 4th Order Linear and Nonlinear Problems'' (a series of lectures), The Principal Lecturer at the Summer School, Xi'an Jiaotong University, Xi'an, China, July 2006.

``Numerical Petroleum Reservoir Simulation'' (colloquium), Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Canada, August 2006.

``Are New Energy Resources within Reach?'' (inaugural lecture), School of Energy, University of Wyoming, Laramie, Wyoming, September 2006.

``n-Component Fluid Mixing'' (invited talk), Consortium Steering Committee Meeting, Celtic Manor, Wales, October 2006.

``Recent Development of a Black Oil Simulator'' (invited talk), Consortium Steering Committee Meeting, Celtic Manor, Wales, October 2006.

``Mathematical and Computational Techniques for New Energy Resources Modeling'' (invited talk), Eighth IMACS International Symposium on Iterative Methods in Scientific Computation in Conjunction with A Scientific Celebration of the Sixtieth Birthday of Professor Richard E Ewing, Texas A&M University, College Station, Texas, USA, November 2006.

``N-Component Fluid Mixing'' (invited talk), Workshop on Fluid Mixing, Shell, Houston, Texas, November 2006.

``Energy Applications of Fluid Flow Through Porous Media'' (The Main Speaker), The RMMC (Rocky Mountain Mathematical Consortium) Conference, Wyoming, USA, June 18--29, 2007.

``What are the Main Road Blocks in the Mathematical Modeling and Computer Simulation of Engineering Problems?'', Summer School, Xi'an Jiaotong Universty, Xi'an, China, June 2--July 4, 2007.

``Mathematical and Computational Techniques for New Energy Resources Modeling'' (invited talk), International Workshop on Computational Methods in Geosciences on the occasion of Professor Jim Douglas, Jr.'s 80th birthday, Xian, Shaanxi, China, July 5--7, 2007.

``What are the Main Road Blocks in the Mathematical Modeling and Computer Simulation of Engineering Problems?'' (colloquium), Institute of Computational Mathematics, Chinese Academy of Sciences, Beijing, China, July 12, 2007.

``What are the Main Road Blocks in the Mathematical Modeling and Computer Simulation of Engineering Problems?'' (colloquium), Department of Mathematics, Shandong University, Jinan, China, July 27, 2007.

``Advanced Reservoir Simulation'', Summer School, College of Engineering, Peking University, Beijing, China, July 9--August 10, 2007.

``Chair Reservoir Simulation Research and Education Plans in the Next Five Years'' (invited talk), Foundation CMG Technical Symposium and Annual General Meeting, Calgary, Canada, September 5, 2007

``Mathematical Difficulties in Reservoir Simulation'' (invited talk), Fekete Associates Inc., Calgary, Canada, November 7, 2007.

``Building Better Models and Solvers'' (invited talk), Petro-Canada, Calgary, Canada, November 28, 2007.

``Building Better Models and Solvers'' (invited talk), Suncor Energy Inc., Calgary, Canada, December 4, 2007.

``Building Better Models and Solvers'' (invited talk), Shell Canada Limited, Calgary, Canada, December 5, 2007.

``Building Better Models and Solvers'' (invited talk), EnCana Corp., Calgary, Canada, December 13, 2007.

`` Fluid Mixing Simulation'' (invited talk), Partial Differential Equations in Applied and Engineering Sciences: Modelling and Simulation, a conference honoring Jim Douglas, Jr. for his 80th birthday, INRIA Paris - Rocquencourt, France, , December 13-14, 2007.

``Building Better Models and Solvers'' (invited talk), Athabasca Oil Sands Corp., Calgary, Canada, January 15, 2008.

``Building Better Models and Solvers'' (invited talk), Nexen Inc., Calgary, Canada, January 17, 2008.

``Recent Advances on Stabilization Mixed Finite Element Methods for Equations of Fluid Mechanics '' (seminar), Institute of Computational Mathematics, Chinese Academy of Science, Beijing, China, June 30, 2008.

``Beyond CSS, SAGD and VAPEX: Reservoir Modeling and Simulation for Heavy Oil and Oil Sands'' (seminar), China University of Petroleum, Beijing, China, June 30, 2008.

``Recent Advances on Stabilization Mixed Finite Element Methods for Equations of Fluid Mechanics '' (seminar), Institute of Applied Physics and Computational Mathematics, Beijing, China, July 1, 2008.

`` Computing Heavy Oil and Oil Sands'' (invited talk), International Conference on Modeling and Simulation 2008, Xi'an Jiaotong University, Xi'an, Shaanxi, China, July 9--12, 2008.

`` Computing Heavy Oil and Oil Sands'' (plenary talk), The 3rd North-West Conference on Computational Mathematics, Kunming, China, July 24--25, 2008.

`` Computing Heavy Oil and Oil Sands'' (plenary talk), Joint Conference of Computational Mechanics and IBM, Shanghai, China, July 25--26, 2008.

``Beyond CSS, SAGD and VAPEX: Reservoir Modeling and Simulation for Heavy Oil and Oil Sands '' (seminar), University of Pittsburgh, Pittsburgh, PA, Sept. 30, 2008.

``Integrated Reservoir Simulation'' (invited talk), CMG Reservoir Simulation Foundation Annual General Meeting, Calgary, Canada, October 22, 2008.

``Reservoir Simulation Course'' (instructor), Center for Mathematical Research (CIMAT), Guanajuato, Mexico, October 27-31, 2008.

``Integrated reservoir simulation and basin models: Reservoir charging and fluid mixing'', 2009 SPE Reservoir Simulation Symposium held in The Woodlands, Texas, USA, 2-4 February 2009.

``Mathematical and Computational Techniques for Modeling Multiphase Flow in Petroleum Reservoirs '' (colloquium), Department of Mathematics, University of Calgary, Calgary, AB, February 26, 2009.

``Better Decisions Through Hardware Acceleration'' (key note speech), Nexen Geology, Geophysics, Reservoir Engineering Conference, Canmore, Alberta, Canada, April 21--23, 2009.

``Energy Modeling'' (invited talk), IBM Alberta Centre for Advanced Studies Research Board Meeting, Edmonton, Alberta, Canada, June 24, 2009.