For the purpose of designing new experiments at the Nuclear and Particle Physics Facility in J-PARC, physicists at home and abroad continue investigations and discussions through various workshops and international conferences.   scheduled conferences   recent conferences NP04: The 3rd International Workshop on Nuclear and Particle Physics at J-PARC (2004 August, Tokai/KEK) [slides] SNP2004: International Workshop on Strangeness Nuclear Physics (2004 July, Osaka Univ.) [slides] NuFACT04: 6th International Workshop on Neutrino Factories & Superbeams (2004 July-August, Osaka Univ.) [slides] PENTAQUARK04: International Workshop on PENTAQUARK04 (2004 July, SPring-8) [slides] NuFact04 Summer Institute: 3rd International School on Neutrino Factories and Superbeams (2004 July, Tokyo Metropolitan Univ.) [slides] 2nd Mini-workshop on the K1.8/K1.1 secondary beam lines at the Nuclear and Particle Physics Experimental Facility (2004 May, KEK) [slides]   conferences in the past Mini-Workshop on the Beam Lines for Kaon Decay Experiments at J-PARC (2003 December, KEK) [slides] NBI2003: 4th International Workshop on the Neutrino Beams and Instrumentation (2003 November, KEK) [slides] Mini-Workshop on the K1.8/K1.1 secondary beamlines at the Nuclear and Particle Physics Experimental Facility (2003 May, KEK) [slides] LEAP'03: International Conference on Low Energy Antiproton Physics (2003 March, Yokohama) [slides] PaNic02: XVI Particles and Nuclei International Conference (2002 September-October, Osaka) [slides] NP02: International Workshop on Nuclear and Particle Physics at 50-GeV PS (2002 September, Kyoto Univ.) [slides] NP01: International Workshop on Nuclear and Particle Physics at 50-GeV PS (2001 December, KEK) [slides] International Workshop on a Next Generation Long-Baseline Neutrino Oscillation Experiment (2001 May, Tsukuba) [slides] NuFACT'01: The 3rd International Workshop on Neutrino Factories based on Muon Storage Rings (2001 May, Tsukuba) [slides]