(57) Orucoglu, E., and Ahn, J., Reactive transport modeling of 129-I migration in granitic rocks, Migration 2013, 14th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, September 8 - 13, 2013, The Brighton Centre, Brighton, UK.

(56) Round Table “Fukushima and Nuclear Power in Japan", participated by Joonhong AHN, UC Berkeley, Cathryn CARSON, UC Berkeley, Michael FISCH, University of Chicago, Kohta JURAKU, UC Berkeley/University of Tokyo, Vincent LAGENDIJK, University of Leiden, Miwao MATSUMOTO, University of Tokyo, Trevor PINCH, Cornell University, Sonja SCHMID, Virginia Tech, and Tomiko YAMAGUCHI, International Christian University. Annual Meeting of the Society for Social Studies of Science (4S) 2011: Cleveland, Ohio, November 2-5, 2011, Crowne Plaza Cleveland City Center Hotel.

(55) Ahn, J., Educational Programs at the University of California at Berkeley for Nuclear Engineering, International Conference on Nuclear Power Plant Technology and Safety, June 17, 2010, Meliã Hotel, Hanoi, Vietnam, Co-hosted by Vietnam Ministry of Science and Technology (MOST), United States – Vietnam Foundation (USVNF).

(54) Borrelli, R. A., O. Thivent, J. Ahn, Radionuclide confinement in the Excavated Damaged Zone based on temperature effects to bentonite extrusion, Paper P/MT/CT/03, the 4th meeting on "Clays in Natural & Engineered Barriers for Radioactive Waste Confinement," March 29 – April 1, 2010, the "Cité Internationale des Congrès," Nantes, France.

(53) Borrelli, R. A., O. Thivent, and J. Ahn, Effect of Temperature Change on Bentonite Extrusion and Radionuclide Migration in the Excavated Damaged Zone, Impact of Thermo-Hydro-Mechanical-Chemical (THMC) processes on the safety of underground radioactive waste repositories, An international conference and workshop in the framework of the European Commission TIMODAZ and THERESA projects, Luxembourg, September 29 - October 1, 2009

(52) Borrelli, R. A., O. Thivent, and J. Ahn, Parametric Studies for Temperature Changes of Bentonite Extrusion and Impacts on Radionuclide Migration in the Excavated Damaged Zone, Migration ‘09, 12th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere, Three Rivers Convention Center, Kennewick, Washington, USA, September 20 - 25, 2009.

(51) Ahn, J., Thoughts on Strategic Package for Future Nuclear Development, Atomic Energy Society of Japan, Annual Meeting, Tokyo Institute of Technology, March 2009 (invited).

(50) Oda, T., K. Juraku, D. Kawasaki, H. Kimura, S. Nagasaki, S. Tanaka, and J. Ahn, Collaborations of Engineers and Social Scientists toward Creation of Education Program for Societal Aspects of Nuclear Energy, Atomic Energy Society of Japan, Annual Meeting, Tokyo Institute of Technology, March, 2009.

(49) Komatsu, K., H. Usui, Y. Niibori, J. Ahn, H. Mimura, Change of Fracture Permeability due to the Precipitation of Calcium-Silicate-Hydrate, Atomic Energy Society of Japan, Annual Meeting, Kochi Institute of Technology, September, 2008.

(48) Borrelli, R. A., and J. Ahn, Impact of Bentonite Extrusion on Radionuclide Migration in a Saturated Planar Fracture, Atomic Energy Society of Japan, Annual Meeting, Kochi Institute of Technology, September, 2008.

(47) Tsujimoto, K., H. Okuda, and J. Ahn, Large-Scale Simulation of Rock Fracture Network for Groundwater Flow and Mass Transport Analysis by Earth Simulator, B-10-3, Proc., 2005 Annual Meeting, Japan Society for Computational Engineering and Science, May 31-June 4, 2005, Tokyo, 2005.

(46) Tsujimoto, K., T. Ohasi, S. Ueta, and J. Ahn, Large-scale Repository Performance Simulation by Multiple Canister Model, 2004 Annual Meeting, The Japan Society for Industrial and Applied Mathematics, September 2004.

(45) Ahn, J., D. Kawasaki, and C.-L. Kim, Environmental Impact of Nuclear Fuel Cycle and Application of Compartment Models, Korea Atomic Industrial Forum, Seoul, Korea, April 26-27, 2004.

(44) Ahn, J., Next-Generation Nuclear Fuel Cycle for Sustainability – Requirements from Geologic Disposal--, Meeting of Tohoku Division, Atomic Energy Society of Japan, December 12, 2002, Tohoku University.

(43) Ahn, J., From Nuclear Legacy to New Nuclear Regime -- From the Viewpoint of Environmental Impacts and Proliferation Resistance --, Committee 122 for Nuclear Materials, Japan Society for Promotion of Science, December 16, 2002, University of Tokyo.

(42) Ahn, J., From Nuclear Legacy to New Nuclear Regime – From the Viewpoint of Sustainable Use of Nuclear Power and Repository Impacts --, International Symposium on Energy Future in the Asia/Pacific Region ––Research & Education for Nuclear Energy––, sponsored by Tokai University Education System, Japan, Co-sponsored by the Department of Nuclear Engineering, University of California, Berkeley, and Korea Atomic Energy Research Institute, and Korea Advanced Institute of Science and Technology, August 26-28, 2002, Taejon, Korea, 2002.

(41) Cheon, M., J. Ahn, E. Greenspan, P. L. Chambre, Analysis of Waste Composition from ATW Fuel Cycle, -- Liquid-Metal (LM) Cooled Fast Reactor --, 2001 ANS Student Mini-Conference, November 10-12, 2001, Reno, Nevada.

(40) Tsujimoto, K., T. Ohashi, Y. Shinohara, J. Ahn, M. Shiotsuki, Development of Parallel Object-Oriented Simulation Code for HLW Repository Performance Assessment, Atomic Energy Society of Japan, Annual Meeting, Hokkaido University, March, 2001.

(39) Ahn, J., Relationship between Nuclear Fuel Cycle Parameters and HLW Repository Performance, Proceedings of the International Symposium on Energy Future in the Asia/Pacific Region ––Research & Education for Nuclear Energy––, sponsored by Tokai University Education System, Japan, Co-sponsored by the Department of Nuclear Engineering, University of California, Berkeley, and Institute of Nuclear Energy Technology, Tsinghua University, March 27–29, 2000, Beijing, China, 2000.

(38) Ahn, J., Relationship between Nuclear Fuel Cycle Parameters and HLW Repository Performance, Proceedings of Symposium, Reduction of Environmental Impact with Nuclear Energy Use, Sponsored by Center for Integrated Research in Science and Engineering, Nagoya University, March 24, 2000, Nagoya, Japan, 2000.

(37) Ahn, J., Advanced Nuclear Fuel Cycle for Improved Radioactive Waste Management, Proceedings of the International Symposium on Energy Future in the Asia/Pacific Region ––Research & Education for Nuclear Energy––, sponsored by Nuclear Science and Technology Association, Taiwan, Tokai University Education System, Japan, and the Department of Nuclear Engineering, University of California, Berkeley, March 15-16, 1999, Lungtan, Taiwan, 1999.

(36) Ahn, J., Research and Education of Nuclear Engineering for Future, Proceedings of the International Symposium on Energy Future in the Asia/Pacific Region ––Research & Education for Nuclear Energy––, sponsored by Tokai University Education System, Japan, Co-sponsored by the Department of Nuclear Engineering, University of California, Berkeley, March 27–28, 1998, Honolulu, Hawaii, 1998

(35) Ahn, J., and W. E. Kastenberg, Overview of Nuclear Energy in the Asia/Pacific Region, Energy Future and the Nuclear Fuel Cycle in the Asia/Pacific Region, Proceedings of the Nuclear Engineering Session, Industrial Liaison Program, 19th Annual Conference, March 12, 1997, edited by J. Ahn and W. E. Kastenberg, Berkeley, California, 1997.

(34) Wakasugi, K., and J. Ahn, Analysis of Data Uncertainty in Performance Assessment for Engineered Barriers, Atomic Energy Society of Japan, Annual Meeting, Tokyo Institute of Technology, March, 1995.

(33) Ahn, J., Simulation of Radionuclide Transport Through Geological Media, 1995 National Symposium on Atomic Energy, Tokyo, Japan, Co-Sponsored by Nuclear energy related associations and societies in Japan, February 15, 1995.

(32) Ahn, J., Rad Waste Storage and Disposal: Present Status and Future Program in Japan, 13th Japan-Russia Energy Symposium on Nuclear Energy Program and Related Safety Issues, Tokai University, Tokyo, Japan, December 12-13, 1994.

(31) Wakasugi, K., and J. Ahn, Analysis of Data Uncertainty in Performance Assessment for Engineered Barriers, Atomic Energy Society of Japan, Annual Meeting, Hokkaido University, September, 1994.

(30) Takahashi, Y., and J. Ahn, Effect of Smectite Illitization on Performance of Engineered Barriers, Atomic Energy Society of Japan, Annual Meeting, Hokkaido University, September, 1994.

(29) Ahn, J., Safety of HLW Geological Disposal and Influences of Major Radionuclides, Symposium on New Technologies for Radioisotopes, '94, The Institute of Physical and Chemical Research (RIKEN), March 28, 1994, Wako, Japan, 1994.

(28) Ahn, J., Summary of International Activities for Geological Disposal of HLW and its Relation to Partitioning and Transmutation, Research Committee on Transmutation, Atomic Energy Society of Japan, January 25, 1994, Tokyo, Japan, 1994.

(27) Lee, G., J. Ahn, and A. Suzuki, Fuzzy Parameter Model for the Radionuclide Transport Through Geological Media, Atomic Energy Society of Japan, Fall Meeting, Kobe Shosen University, 1993.

(26) Ahn, J., Research and Development for Safety Assessment of Radioactive Waste Diasposal,, Symposium on Problems and Prospects for 21st Century's Nuclear Fuel Cycle, Research Committee on Advanced Nuclear Fuel Cycle Technologies, Atomic Energy Society of Japan, August 1993, Kashikojima, Japan, 1993.

(25) Ahn, J., M. Watanabe, and A. Suzuki, Computer Simulation of Tracer Dispersion in Flow Through Two-Dimensional Networks of Randomly Distributed Lines, Atomic Energy Society of Japan, Annual Meeting, Kyoto University, 1993.

(24) Ahn, J., K. Furukawa, T. Uchimoto, and A. Suzuki, Analysis of Tracer Dispersion in Flow Through Two-Dimensional Network of Randomly Distributed Lines by Percolation Theory, American Geophysical Union, Fall Meeting, San Francisco, 1992.

(23) Ahn, J., T. Ikeda, T. Ohe, T. Kanno, Y. Sakamoto, T. Chiba, M. Tsukamoto, S. Nakayama, S. Nagasaki, T. Fujita, and K. Banno, Quantitative Performance Allocation of Multi-Barrier System for HLW Disposal ––-Reduction of Nuclide Release Rates by the Engineered and Natural Barriers––-, Atomic Energy Society of Japan, Fall Meeting, Nagoya University, 1992.

(22) Ahn, J., T. Ikeda, T. Ohe, T. Kanno, Y. Sakamoto, T. Chiba, M. Tsukamoto, S. Nakayama, S. Nagasaki, T. Fujita, and K. Banno, Quantitative Performance Allocation of Multi-Barrier System for HLW Disposal ––-Determination of the Innermost Boundary Conditions––-, Atomic Energy Society of Japan, Fall Meeting, Nagoya University, 1992.

(21) Ahn, J., T. Ikeda, T. Ohe, T. Kanno, Y. Sakamoto, T. Chiba, M. Tsukamoto, S. Nakayama, S. Nagasaki, T. Fujita, and K. Banno, Quantitative Performance Allocation of Multi-Barrier System for HLW Disposal––-Prediction of Solubilities at Near-Field––-, Atomic Energy Society of Japan, Fall Meeting, Nagoya University, 1992.

(20) Fujita, K., J. Ahn, and A. Suzuki, Migration of Multiple-Member Decay Chains Through Fractured Media, Atomic Energy Society of Japan, Fall Meeting, Nagoya University, 1992.

(19) Ahn, J., and A. Suzuki, Diffusion of the 241Am ––> 237Np Decay Chain in Engineered Barriers Limited by Their Elemental Solubilities, Atomic Energy Society of Japan, Annual Meeting, Tokai University, 1992.

(18) Ahn, J., S. Nagasaki, K. Furukawa, and A. Suzuki, Experimental Studies of Tracer Dispersion in Flow Through Two-Dimensional Networks of Randomly Distributed Lines, Atomic Energy Society of Japan, Annual Meeting, Tokai University, 1992.

(17) Hunayama, M., J. Ahn, and A. Suzuki, Transport Properties in Porous Media By Sintered Glass Particles, Atomic Energy Society of Japan, Annual Meeting, Kinki University, 1991.

(16) Ahn, J., Y. Akashi, and A. Suzuki, Derivation of Green's Function for Anomalous Diffusion in Disordered MediaAtomic Energy Society of Japan, Annual Meeting, Kinki University, 1991.

(15) Ahn, J., Y. Furuhama, and A. Suzuki, Analysis of Radionuclide transport Through Fractured Geologic Media by Percolation Theory, Atomic Energy Society of Japan, Annual Meeting, Univ. of Tokyo, 1990.

(14) Ahn, J., Analytical Safety Assessment of High-Level Radioactive Waste Repositories with a Bounding Radionuclide Transport Model for Fractured Geologic Media, Symposium in honor of Professor T. H. Pigford, American Nuclear Society, Berkeley, Calif., 1989.

(13) Ahn, J., and A. Suzuki, Risk Analysis for a High-Level Waste Repository with Fracture Transport Model in the Presence of Parameter Uncertainty, Atomic Energy Society of Japan, Annual Meeting, Osaka, 1989.

(12) Ahn, J., and A. Suzuki, Radionuclide Release from a Low-Level Waste Repository with Cylindrical Nuclide-Path Model, Atomic Energy Society of Japan, Annual Meeting, Osaka, 1989.

(11) Ahn, J., P. L. Chambré, and T. H. Pigford, Radionuclide Transfer from Cylindrical Waste Solid Into Fractured Rock, Atomic Energy Society of Japan, Fall Meeting, Kobe, 1988.

(10) Zhou, W., J. Ahn, W. W.-L. Lee, P. L. Chambré, and T. H. Pigford, Dissolution/ Precipitation of a Two-member Chain at a Dissolving Matrix, SPECTRUM '88, American Nuclear Society International Topical Meeting, Pasco, WA, September 1988.

(9) Ahn, J., P. L. Chambré, and T. H. Pigford, Transient Diffusion from a Waste Solid into Fractured Porous Rock, Trans. Am. Nuc. Soc., 56, 173, Annual Meeting, San Diego, 1988.

(8) Ahn, J., P. L. Chambré, W. W.-L. Lee and T. H. Pigford, Back Diffusion of Contaminants in Fracture-Flow Transport, Am. Geophys. Union, Fall Meeting, San Francisco, 1987.

(7) Ahn, J., P. L. Chambré, T. H. Pigford, and W. W.-L. Lee, Nuclide migration from areal source into a fracture, Am. Soc. Civil Eng., Nat'l Conf. on Hyd. Eng. and Eng. Hydr., Williamsburg, 1987.

(6) Ahn, J., C. L. Kim, P. L. Chambré, W. W.-L. Lee, and T. H. Pigford, Approximations for array sources in ground-water quality modeling, Am. Geophys. Union, Spring Meeting, Baltimore, 1987.

(5) Ahn, J., P. L. Chambré, T. H. Pigford, and W. W.-L. Lee, Transport of radionuclide released from a multiple-patch source into a planar fracture with transverse hydrodynamic dispersion, Trans. Am. Nuc. Soc., Annual Meeting, Dallas, TX, June 7-11, 1987. Link

(4) Ahn, J., P. L. Chambré, T. H. Pigford, and W. W.-L. Lee, Multiple patch sources and effects of transverse dispersion in rock fractures, Am. Geophys. Union, Fall Meeting, San Francisco, 1986.

(3) Ahn, J., P. L. Chambré, and T. H. Pigford, Transport in multiply fractured rock by superposition, Trans. Am. Nuc. Soc., 50, pp. 139-140, Winter Meeting, San Francisco, 1985.

(2) Suzuki, A., H. Umeki, J. Ahn, Y. Enokida, and R. Kiyose, Long-term risk assessment on high-level waste management, Pacific Basin Chem. Eng. Conf., Seoul, 1983.

(1) Ahn, J., A. Suzuki, and R. Kiyose, A Study on Radionuclide Migration Through Fissured Media, Atomic Energy Society of Japan, Fall Meeting, Kobe, 1982.

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