| No | Scientific Meetings/Workshps/Symposium/Seminars Attended | Roles |
| 141 | Oneday Technopreneureship Workshop. Badan Eksekutif Mahasiswa, Institut Pertanian Bogor. Bogor, 24 October 2009. | Presenter |
| 140 | International Conference on Promising Practices for the Development of Sustainable Paddy Fields. The 7th Annual Meeting of the International Society of Paddy and Water Environment Engineering (PAWEES). Bogor: October 7-9, 2009 | Chairman Presenter |
| 139 | Workshop on Promoting Biodiversity, Raiforest Protection, and Economic Development in Indonesia-Presenting Key Results for Research and Policy of a 9 Yaer Indonesian-German Research Program:" Stability of Rainforest Margins in Indonesia (STORMA). Bogor, 5-6 October 2009. | Participant |
| 138 | Semilokakarya Nasional Implementasi Jasa Lingkungan berbasis Para Pihak sebagai Alternatif Upaya membangun dan menjaga Keseimbangan Ekologi, Sosial dan Ekonomi dalam Perspekstif Pengelolaan DAS secara berkelanjutan. Cilegon, 12 Agustus 2009. | Participant |
| 137 | MBOS Meeting, Pre-Olympic Conference. Tangerang, 27 July 2009. | Presenter |
| 136 | Bogor Symposium and Workshop on Tropical Peatland Management: Characterization and Wise use of Tropical Peatland. Bogor, July 15-16, 2009. | Presenter |
| 135 | Identifikasi Dampak Perubahan Iklim pada Sektor Sumber Daya Air III. Program Penguatan IPTEK Adaptasi dan Mitigasi Perubahan Iklim. Kementerian Negara Riset dan Teknologi. Bogor, 23 Juni 2009. | Moderator |
| 134 | Sosialisasi dan Penyamaan Persepsi Sertifikasi Dosen Tahun 2009 di Lingkungan Institut Pertanian Bogor. Bogor, 9 Juni 2009. | Participant |
| 133 | Identifikasi Dampak Perubahan Iklim pada Sektor Sumber Daya Air II. Program Penguatan IPTEK Adaptasi dan Mitigasi Perubahan Iklim. Kementerian Negara Riset dan Teknologi. Jakarta, 25 Mei 2009. | Participant |
| 132 | Forum Group Discussion on Impact Identification of Climate Changes on Water Resource Sector. Program for Strengthening Adaptation and Mitigation Science and Technology on Climate Changes. State Ministry of Science and Technology. Bekasi, 21 April 2009. | Presenter |
| 131 | Workshop Irigasi Intermittent sebagai Alteenatif dala menjawab Tantangan Pengelolaan Sumber Daya Air. Bekasi, 20 April 2009. | Resource Person |
| 130 | Postgraduate GP Education Workshop on From Environmental to Sustainable Science: thinking the shift and the role of Asian agricultural science. Ibaraki University, January 12-13, 2009. | Presenter |
| 129 | INWEPF 5th Steering Meeting and Symposium on Effect and Sustainable Water use to address Poverty Alleviation and Food Security. Bali, 13-15 November 2008 | |
| 128 | International Symposium on Tropical Rainforests and Agroforests under Global Change. Denpasar, October 5-9, 2008. | Presenter |
| 127 | Seminar on Toward Harmonization between Development and Environmental Conservation in Biological Production. Tokyo, 28-29 February 2008 | Presenter |
| 126 | STORMA Stakeholder Workshop Sustainable resource management under global change - what can researchers tell decision makers? Widya Graha LIPI, Jakarta 20-21 February 2008 STORMA Stakeholder Workshop, Widya Graha LIPI, Jakarta 20 – 21 February 2008. | Presenter |
| 125 | Seminar Nasional Ketahanan Pangan 2007. Peningkatan Peran Keteknikan Pertanian dalam mewujudkan Ketahanan Pangan. PERTETA. Bandar Lampung, 15~17 November 2007. | Presenter |
| 124 | Ekpsose Nasional Hasil Penelitian dan Pengabdian kepada Masyarakat Unggulan Perguruan Tinggi tahun 2007. DP2M DIKTI, DEPDINAS. Semarang, 9~10 November 2007. | Presenter |
| 123 | International symposium & Students WorkShop on Ecological Service Functions for Sustainable Agriculture in Asia. Ibaraki, September 4-8, 2007. | Presenter |
| 122 | IndoAqua207. Bali, 1~2 Agustus 2007 | Participant |
| 121 | IUGG XXIV/2007 General Assembly. Perugia, Italy, July 2~13, 2007 | Presenter |
| 120 | Penguatan Forum Komunikasi DAS Cidanau melalui Rapid Hydrological Assesment. World Agroforestry Center. Bogor, 20 Juni 2007 | Presenter |
| 119 | Internatioal Joint Workshop on Water and Climate. Cooperative Program on Water and Climate & Indonesian Water Partnership. Jakarta, 23-24 May 2007 | Participant |
| 118 | 7th International Micro Irrigation Congress: Advance on microirrigation for optimum crop production and resource conservation. International Committee on Irrigation and Drainage. Kualalumpur, 10~16 September 2006. | Presenter |
| 117 | Magang Pengembangan Teknologi Maju Hemat Air. Direktorat Budidaya Tanaman Sayuran dan Biofarmaka, Ditjen Hortikultura, Departemen Pertanian. Bogor, 3-6 Juli 2006. | Presenter |
| 116 | Lokakarya Nasional Pengelolaan Sumber Daya Air Terpadu ditinjau dari Aspek Keberlanjutan Fungsi Lingkungan Hidup. Kemitraan Air Indonesia. Jakarta, 4 Juli 2006 | Participant |
| 115 | Pameran dan Temu Bisnis: Academic-Business-Government dalam meningkatkan Daya Saing Bisnis berbasis Teknologi Kelautan. Dirjen Pengolahan dan Pemasaran Hasil Perikanan, DKP. Jakarta, 26 Juni 2006. | Presenter |
| 114 | Apresiasi/Workshop Budidaya Patin. Jambi, 8-10 Juni 2006 | Presenter |
| 113 | Lokakarya Sehari IPB/CIFOR. Menggagas Aksi Bersama Masyarakat. Pengelolaan Jasa Lingkungan DAS Bagian Hulu. Bogor, 15 Maret 2006 | Moderator |
| 112 | Lokakarya Inventarisasai Permasalahan Pengelolaan Sumber Daya Air di Indonesia. Kemitraan Air Indonesia dan Global Water Partnership. Jakarta, 7~9 Maret 2006 | Participant |
| 111 | Seminar Departemen Teknik Pertanian. Pengolahan Tanah Optimal Budidaya tebu Lahan Kering dan Early Detection of Chilling Injury in Cucumber Fruits through Proton NMR Analysis. Bogor, 4 Januari 2006. | Participant |
| 110 | Dialog on Integrated Water Resource Management Capacity Building. Indonesian Water Partnership. Jakarta, 9 December 2005. | Presenter |
| 109 | Stakeholder Meeting on Advancing National Water Management Project.Directorate General of Water Resources, Ministry of Public Work. Jakarta, 08- December 2005. | Participant |
| 108 | Kongres dan Seminar Komite Nasional Indonesia-ICID. Jakarta, 28-29 November 2005. | Participant |
| 107 | Simposium Nasional. Ketahanan dan Keamanan Pangan pada Era otonomi dan Globalisasi. The International Society for Southeast Asian Agricultural Sciences (Indonesian Chapter). Bogor, 22 November 2005 | Presenter |
| 106 | Workshop RUBRD-UT/IPB. JSPS-DGHE Core University program in Applied Biosciences. Sekolah Pascasarjana, Institut Pertanian Bogor. Bogor, 9 Agustus 2005. | Participant |
| 105 | Workshop on Collaborative Working Models between Higher Education Institutions, Government and Industries to strengthen the Competitive Advantage og Agricultural Local Resource based Products. Bogor Agricultural University, JICA and DGHE. Bogor, 6-7 June 2005. | Participant |
| 104 | Seminar revitalisasi Subsektor Tanaman Pangan (Dr. Atjeng M. Sjarief). Departemen Teknik Pertanian, Institut Pertanian Bogor. Bogor, 25 Mei 2005. | Participant |
| 103 | Seminar Food Security and Safety (Prof. Bill Stout). Department of Agricultural Engineering, Bogor Agricultural University. Bogor, 25 April 2005. | Participant |
| 102 | Workshop on Toward Internalization of IPB from Guest lecturers’point of views. Bogor Agricultural University. Bogor, 19 April 2005. | Participant |
| 101 | Seminar Hasil Hibah Pengajaran, Proyek DUE-Like IPB Batch III. Departemen Teknik Pertanian, Institut Pertanian Bogor. Bogor, 30 Maret 2005. | Presenter |
| 100 | Workshop Strategi Komersialisasi KI/HKI IPB. Wakil Rektor IV Bidang Perencanaan, Pengembangan dan Kerjasama, Institut Pertanan Bogor. Bogor, 10 Maret 2005. | Participant |
| 99 | Lokakarya Diseminasi Hibah Pengajaran Tahun Anggaran 2004, Proyek DUE-Like Batch III. Local project Implementation Unit (LPIU), Institut Pertanian Bogor. Bogor, 10 Maret 2005. | Presenter |
| 98 | Lokakarya Pendidikan. Fakultas Teknologi Pertanian, Institut Pertanian Bogor. Bogor, 2 Maret 2005. | Participant |
| 97 | 2nd Workshop on Indonesia Integrated Water Resources management (IWRM) and Water Efficiency Plan. Indonesia water Partnership. Jakarta, February 21-22, 2005. | Participant |
| 96 | Mata Kuliah Kolokium PS. Pascasarjana Ilmu Keteknikan Pertanian. Departemen Teknik Pertanian, Institut Pertanian Bogor. Bogor, 29 Desember 2005. | Presenter |
| 95 | Kolokium Pascasarjana Ilmu Komputer. Kegiatan Penelitian. Departemen Ilmu Komputer, FMIPA. Kampus IPB Barangsiang, 18 Desember 2004. | Presenter |
| 94 | 1st Workshop on Indonesia Integrated Water Resources management (IWRM) and Water Efficiency Plan. Indonesia water Partnership. Jakarta, December 13-14, 2004. | Participant |
| 93 | Third International Seminar on Harmonization between Development and Environmental Conservation in Biological production. Banten, December 3-5, 2004. | Organizer, Presenter |
| 92 | Seminar Hasil Penelitian. Depertemen Teknik Pertanian. Institut Pertanian Bogor. Bogor, 27 Oktober 2004. | Participant |
| 91 | Third International Conference on Educational Accreditation System and APEC Engineers Project for Agricultural Engineering in Paddy-Farming Regions, and Award Ceremony for the PAWEES Honors. Ansan, Korea, 21-23 October 2004. | Presenter |
| 90 | First International Workshop on Solar Energy Utilization. Jakarta, October 6~7, 2004. | Presenter |
| 89 | International Symposium on Food Production and Environmental Conservation in the Face of Global Environmental Deterioration (FPEC). Fukuoka, Japan, 7-11 September 2004 | Presenter |
| 88 | Seminar Evaluasi dan Pembahasan Rencana kerja RUT X dan XI. Serpong, 25-27 November 2004. | Presenter |
| 87 | Seminar Nasional Ilmu Komputer dan Teknologi Informasi 2004. Departemen Ilmu Komputer, FMIPA. Institut Pertanian Bogor. 2-3 September 2004. | Presenter |
| 86 | Presentasi Hasil Penelitian Program Doktor. Departemen Teknik Pertanian. Institut Pertanian Bogor. Bogor, 28 Juli 2004. | Participant |
| 85 | Seminar Inovasi mekanisasi Pertanian Berkelanjutan (Dr. Handaka). Departemen teknik Pertanian, Institut Pertanian Bogor. Bogor, 14 Juli 2004. | Participant |
| 84 | Forum Ilmiah. Lindungi Bumi dengan Air. Festival Air. Kampus IPB Darmaga, Bogor. 25 Juni 2004. | Participant |
| 83 | Strategi Penyusunan Usul Penelitian dan Pengabdian Masyarakat DP3M, Dikti. Departemen Teknik Pertanian, Fakultas Teknologi Pertanian, Institut Pertanian Bogor. Bogor, 2 Juni 2004. | Presenter |
| 82 | Strategi Penyusunan Usul Penelitian dan Pengabdian Masyarakat DP3M Dikti. Departemen Teknik Pertanian, Institut Pertanian Bogor, 2 Juni 2004. | Presenter |
| 81 | Presentasi Hasil Hibah Pengajaran Proyek DUE-Like. Departemen teknik Pertanian, Institut Pertanian Bogor. Bogor, 18 Februari 2004. | Presenter |
| 80 | Presentasi Hasil Hibah Pengajaran Proyek DUE-Like. Departemen teknik Pertanian, Institut Pertanian Bogor. Bogor, 25 Februari 2004 | Participant |
| 79 | CIAM Series: Irigasi Kendi, kendali Lingkungan Pembenihan Ikan Patin, Wetland, watershed Modeling, and Tank Model. Kampus IPB Baranangsiang, 21 Januari 2004. | Presenter |
| 78 | International Colloquium on LUCC and Environmental Problems. Bogor, 19~21 December 2003. | Moderator |
| 77 | Dialog Nasional: Penyelamatan Air dalam rangka Hari Air Sedunia. Jakarta, 2003. | Participant |
| 76 | Round Table Discussion. Strategi Kebijakan Riset Kebutuhan Dasar Masyarakat. Kementrian Riset dan Teknologi, Republik Indonesia, Jakarta, 11 Desember 2003 | Participant |
| 75 | Seminar Tahunan PERTETA. Pengembangan Inkubator Agribisnis berbasis Teknologi Tapat Guna. Subang, 10 Desember 2003. | Participant |
| 74 | Presentasi Penelitian dan Japan Accreditation Board of Engineeirng Education (Prof.Dr. Tadatsagu Tanaka). Departemen Teknik Pertanian, Institut Pertanian Bogor. Bogor, 17-19 November 2003. | Participant |
| 73 | Lokakarya Pengembangan Kerjasama Bidang Teknik Pertanian. Projek DUE-Like Batch III. Bogor, 22 Okrober 2003. | Participant |
| 72 | Semiloka Teknologi Simulasi dan Komputasi serta Aplikasi. BPP Teknologi, Jakarta, 14 Oktober 2003. | Participant |
| 71 | Presentasi Hasil Penelitian (Dr. Arief S. Yuwono). Departemen Teknik Pertanian, Institut Pertanian Bogor. Bogor 0 Oktober 2003. | Participant |
| 70 | Seminar Evaluasi dan Pembahasan Rencana Kerja RUT IX dan X. LIPI, Serpong, 2~4 Oktober 2003. | Presenter |
| 69 | Workshop: Infrastruktur untuk pengembangan kawasan industri pertanian dan perkebunan. Bogor, 23 September 2003. | Presenter |
| 68 | 2nd Asia-Pacific Training Workshop on Ecohydrology: Integrating Ecohydrology and Pythotechnology into Workplan of Government, Private and Multinational Companies. Cibinong, 21~26 July 2003. | Presenter |
| 67 | Seminar Perkembangan Peneliltan Harmonisasi antara Pembangunan dan Konservasi Lingkungan dalam Kegiatan Produksi Biologi. JSPS-DGHE Core University Program in Applied Bioscienses. The University of Tokyo –Institut Pertanian Bogor. Bogor, 15 April 2003. | Presenter |
| 66 | Dialog Nasional: Penyelamatan Air, dalam rangka Hari Air Sedunia 2003. Jakarta, 20 Maret 2003. | Presenter |
| 65 | The 2nd Seminar Toward Harmonization between Development and Environmental Conservation in Biological Production. Tokyo, February 15-16, 2003. | Presenter |
| 64 | Seminar Jurusan Teknik Pertanian, Fateta-IPB. Sistem Penilaian Universitas yang dipakai oleh ASIA WEEK. Jurusan Teknik Pertanian, Fateta-IPB. Bogor, 6 Nopember 2002. | Presenter |
| 63 | Seminar Nasional Pembangunan Agribisnis dalam rangka memperingati HUT III Kabupaten Kutai Timur, Sangatta, 12~13 Oktober 2002. | Presenter |
| 62 | Seminar Nasional Ilmu Komputer dan Teknologi Informasi III. Masyarakat Ilmu Komputer dan Informasi. Universitas Tarumanegara, Jakarta, 27-28 Agustus 2002. | Presenter |
| 61 | Seminar Nasional Infrastruktur syarat mutlak pembangunan pertanian di Indonesia. CREATA LP-IPB. Bogor, 23 Agustus 2002. | Presenter |
| 60 | Seminar Nasional Crustacea 2. Peran Ilmu dan Teknologi dalam Peningkatan Produksi yang berkesinambungan dan berwawasan Lingkungan. Bogor, 20-21 Agustus 2002. | Presenter |
| 59 | Seminar Tahunan Perhimpunan Tenik Pertanian Indonesia. Malang, 3~4 Mei 2002. | Presenter |
| 58 | Seminar Nasional Kecerdasan Komputasional II. Depok, 16~17 Oktober 2001. | Presenter |
| 57 | Second IFAC-CIGR Workshop on Intelligent Control for Agricultural Applications. Bali, 22~24 August 2001. Pages 158~161. | Presenter |
| 56 | Annual meeting of Japanese Society of Irrigation, Drainage and Reclamation Engineering. Morioka, 25~27 July 2001. | Participant |
| 55 | The 1st Seminar: Toward Harmonization between Development and Environmental Conservation in Biological Production. Tokyo, February 21-23, 2001 | Presenter |
| 54 | International Conference Sustainable Soil Management for Environmental Protection - Soil Physical Aspect Firenze 2-7 July 2001 | Presenter |
| 53 | China International Conference on Dry land and Water-Saving Farming. Beijing, November 21~23, 2000. | Presenter |
| 52 | Kongres dan Seminar KNI-ICID: Air, Lahan dan Ketersediaan Pangan. Bogor, 16~17 Nopember 2000. | Presenter |
| 51 | Seminar Nasional Teknik Pertanian: Modernisasi Pertanian untuk meningkatkan Efisiensi dan Produktivitas menuju Pertanian Berkelenjutan. Bogor, 11~12 Juli 2000. | Presenter |
| 50 | International Toward Sustainable Agriculture in Humid Tropics facing 21st. Bandar lampung, September 27~28, 1999. | Presenter |
| 49 | Seminar Sehari Kongres Ilmu Pengetahuan Nasional VII. Puspiptek, Serpong, 8 September 1999. | Presenter |
| 48 | International Workshop on Sustainable Resource Management of Cidanau Watershed. Bogor July 26, 1999. | Organizer, Presenter |
| 47 | Workshop 1st Anniversary Research Unit for Biological Resources and Development, The University of Tokyo at Institut Pertanian Bogor. Bogor, December 21, 1998. | Presenter |
| 46 | Seminar Nasional Penerapan Teknologi Kendali dan Instrumentasi pada Pertanian. Jakarta, 28-29 Oktober 1998. | Presenter |
| 45 | The Afro-Asian Regional Conference on Irrigation and Drainage, Bali 19-25 July 1998. | Presenter |
| 44 | Seminar Tahunan Perteta, Yogyakarta 21-22 Juli 1998 | Presenter |
| 43 | Seminar Gerakan Hemat Air, Depok 9 April 1998. | Presenter |
| 42 | Seminar Sehari Pendayagunaan Air Tanah yang berkelanjutan dalam rangka memperingati hari Air Sedunia. Dep. PU-KNI ICID. Jakarta, 19 Maret 1998. | Presenter |
| 41 | 7th ICID International Drainage Workshop: Drainage for 21st Century. Penang, Malaysia, 17-21 November 1997. | Presenter |
| 40 | Seminar Nasional Optimasi Pemanfaatan Air Irigasi di Tingkat Usahatani menuju Pertanian Modern. HATTA dan KNI-ICID. Bekasi, 30 Oktober 1997. | Presenter |
| 39 | Seminar Nasional Pengembangan dan Pengelolaan Sumberdaya Air dan Lahan. Dep. PU-KNI ICID. Jakarta, 10 Juli 1997. | Presenter |
| 38 | Perkemahan dan Seminar Tahunan PERTETA. PERTETA Cabang Bandung dan UNPAD. Bandung, 8 Juli 1997 | Presenter |
| 37 | Seminar Sehari Pemanfaatan Air. Dirjen Pengairan PU. Jakarta, 30 Juni 1997 | Presenter |
| 36 | Lokakarya Peluang dan Prospek Kerjasama Kemitraan IPB dengan Dunia Usaha. PR IV IPB. Bogor, 16 Juni 1997 | Organizer |
| 35 | Seminar Nasional Pengembangan dan Pengelolaan Sumber Daya Air. PU dan KNI-ICID. Jakarta, 10 Juni 1997 | Presenter |
| 34 | Seminar and Workshop on Mamberamo River Catchment Are Development. DP-KTI, BPPT, Pemda Tk.I Irja dan CIDES. Jakarta, 7 April 1997. | Presenter |
| 33 | Seminar Nasional Pengelolaan Lingkungan yang berkelanjutan melalui Pemasyarakatan Gerakan Hemat Air. Dep. PU. Jakarta, 20 Maret 1997. | Presenter |
| 32 | Seminar Nasional Hasil Penelitian Perguruan Tinggi. Jakarta, 28 Desember 1996. | Presenter |
| 31 | International Agricultural Engineering Conference. AAAE. Pune, India, 9-12 December 1996. | Presenter |
| 30 | Seminar Pengembangan Teknologi berwawasan untuk Pertanian pada Lahan Gambut. Bogor, 26 September 1996. | Presenter |
| 29 | Seminar Pengembangan Pemukiman Transmigrasi Berpola Agribisnis dan Agroindustri. Bogor, 9 September 1996. | Presenter |
| 28 | Workshop on Industrial Drying Technology. Bogor, 20 Agustus 1996 | Presenter |
| 27 | Seminar Nasional Kontribusi Teknik Pertanian untuk memacu Pembangunan Industri dalam Era Globalisasi. Padang, 22~23 Juli 1996 | Presenter |
| 26 | Seminar Tahunan Pengembangan Penelitian Teknik Pertanian. Bogor, Juli 1996 | Presenter |
| 25 | Seminar Peranan Teknik Pertanian dalam Era Pertanian yang Berkelanjutan serta Berwawasan Ilmu Pengetahuan dan Teknologi. Bogor, 18 Juni 1996. | Presenter |
| 24 | Seminar Sehari Perencanaan dan Pengelolaan Wilayah Pesisir dan Lauran Secara Terpadu. Bogor, 16 April 1996 | Presenter |
| 23 | International Seminar on Optimization of Water Allocation for Sustainable Development. Jakarta, 17 January 1996 | Participant |
| 22 | Seminar Nasional Tahunan III PERSADA. Bogor, 7 Desember 1995 | Participant |
| 21 | Simposium Nasional Pengelolaan Sumber Air di Indonesia. PSDA-ITB. Bandung, 28-29 November 1995. | Presenter |
| 20 | Seminar Pengelolaan dan Pemanfaatan Airtanah di Wilayah Pesisir. BPPT. Jakarta, 25-26 Oktober 1995. | Presenter |
| 19 | Seminar Sehari Peluang dan Tantangan Agroindustri dalam menghadapi Era Globalisasi. Bogor, 7 Oktober 1995 | Organizer |
| 18 | Seminar Nasional KNI-ICID Pengembangan dan Pengelolaan Sumber Air. Palembang, 10 Juni 1995 | Presenter |
| 17 | Pertemuan Tahunan Perhimpunan Teknik Pertanian Indonesia. Bogor, 13-14 Maret 1995. | Presenter |
| 16 | Seminar Tahunan II PERSADA Bogor, 8 November 1994. | Presenter |
| 15 | Agroindustry Development to Manifest Sustainable System of Agriculture. IPB. Jakarta Fair Arena, Kemayoran, Jakarta, 25-29 September 1993. | Participant |
| 14 | Seminar Sehari Teknologi untuk Pedesaan PII. Jakarta, 26 Mei 1994. | Participant |
| 13 | Seminar Nasional Operasionalisasi Teknologi Tepat Guna Subsektor Agroindustri dalam PELITA VI. Jakarta, 5 Mei 1994 | Presenter |
| 12 | Seminar dan Kongres Perhimpunan Teknik Pertanian Indonesia. Bogor, 13-15 Desember 1993. | Presenter |
| 11 | Pertemuan Ilmiah Teknologi Tepat Guna untuk mendukung Agroindustri. Bogor, Oktober 1993. | Presenter |
| 10 | Konvensi Nasional Insinyur Mesin PII. Jakarta, 8-10 Agustus 1993. | Presenter |
| 9 | Annual Meeting of Japanese Society of Irrigation, Drainage and Reclamation Engineers. Hokkaido, 1992. | Presenter |
| 8 | Annual Meeting of Japanese Society of Irrigation, Drainage and Reclamation Engineers. Aichi, 1991. | Participant |
| 7 | International Symposium of International Society of Soil Science, Kyoto, 1991. | Participant |
| 6 | Annual Meeting of Japanese Society of Irrigation, Drainage and Reclamation Engineers. Marioka, 1990. | Participant |
| 5 | Annual Meeting of Agric. Civil Eng. Section of Japanese Society of Irrigation, Drainage and Reclamation Engineers, Kyoto, 1990. | Participant |
| 4 | Annual Meeting of Japanese Society of Irrigation, Drainage and Reclamation Engineers. Tokyo, 1989 | Participant |
| 3 | Annual Meeting of Soil Physics and Hydrology Research of Japanese Society of Irrigation, Drainage and Reclamation Engineers, Tokyo, 1988. | Participant |
| 2 | Simposium dan Kongres Perhimpunan Teknik Pertanian Indonesia, Jakarta 7-9 Februari 1981. | Participant |
| 1 | Regional Seminar. Appropriate Mechanization for Rural Development. IPB. Sahid Jaya Hotel, Jakarta, 26-31 January 1981. | Participant |