• Yu, J. H.,Wang,X.L.,Ha, B. R.,Lee, G.Y.,Ahn, S.H., 2018, "Monitoring of Solar Power Plant and Machine Tools for Sustainable Progress in Developing Countries," 9th International Conference on Appropriate Technology (ICAT) 2018, Academic Society for Appropriate Technology, November 23-24, Hanyang Institute of Technology, Hanyang University, Seoul, Korea.
• Ha, B. R., Wang,X.L.,Yu, J. H.,Lee, G.Y., Rhee, H., and Ahn, S.H., 2018, "Smart Electricity Meter Using Radio Frequency in Rural Area of Tanzania," 9th International Conference on Appropriate Technology (ICAT 2018), Academic Society for Appropriate Technology, November 23-24, Hanyang Institute of Technology, Hanyang University, Seoul, Korea.
• Park, S., Lyu, J. H., Yu, J. H., and Ahn, S.H., 2018, "Developing a Vaccine Carrier with Real-Time Monitoring System using GSM GPRS SMS communication methods: A Case Study in Tanzania," 9th International Conference on Appropriate Technology (ICAT) 2018, Academic Society for Appropriate Technology, November 23-24, Hanyang Institute of Technology, Hanyang University, Seoul, Korea.
• Kim, D.R., Jang, K.H., Chu, W.S., Dahyun Choi, Woo il Lee, Lee, C.S., and Ahn, S.H., 2018, "Preference of Man vs. Women to Case Materials in Smart Devices: A comparative Study in Korea, USA, and Tanzania," International Conference on Energy and Sustainability (ICES 2018), Academic Society for Appropriate Technology , October 17-19, Seoul National University, Seoul, Korea.
• Yu, J. H.,Wang,X.L.,Ha, B. R.,Lee, G.Y.,Ahn, S.H., 2018, "Monitoring and Stabilization of 10kW Solar Power Plant in Mkalama Village, Tanzania," International Conference on Energy and Sustainability (ICES 2018), Academic Society for Appropriate Technology , October 17-19, Seoul National University, Seoul, Korea.
• Wang,X.L., Ha, B. R.0, Ahn, S.H., 2018, "Radio Frequency based Energy Monitoring System, Case Study in Tanzanian Rural Village," International Conference on Energy and Sustainability 2018 (ICES 2018), October 17-19, Seoul National University, Seoul, Republic of Korea.
• Park, S., Lyu, J. H., Yu, J. H., and Ahn, S.H., 2018, "Thermoelectric Cooler with Real-Time Monitoring for Vaccine Delivery: A Case Study in Tanzania," International Conference on Energy and Sustainability 2018 (ICES 2018), October 18-19, Seoul National University Graduate School of Engineering Practice, Seoul National University, Seoul, Korea.
• Wang,X.L., Ha, B. R.0, Ahn, S.H., 2018, "Radio Frequency Based Remote Control of Smart Meter System for Energy Monitoring," International Symposium of Precision Engineering and Sustainable Manufacturing (PRESM 2018), Korean Society for Precision Engineering (KSPE), July 3-7, Sapporo Convention Center, Sapporo, Japan.
• Kim, J.S., Park, S., Yu, J. H., Ha, B.R., and Other 45 Author, H. Rhee, Lee, C.S., C.K. Song, K. Njau, and Ahn, S.H., 2018, "Electrification of Rural Area of Tanzania," International Symposium of Precision Engineering and Sustainable Manufacturing (PRESM 2018), Korean Society for Precision Engineers (KSPE), July 3-7, Sapporo Convention Center, Sapporo, Japan.
• Choi, I.G., Park, H.B., Yu, J. H., Kim, D.R. and Ahn, S.H., 2017, "Development of wearable cooling device using water evaporation through cooling fans," International Conference on Engineering Innovation, Seoul National University Graduate School of Engineering Practice, Dec 8, Seoul National University, Seoul, Korea
• Mun, J.W., Min, S.H., Kim, M.S., Poudel, S.R. and 18 other author and Ahn, S.H., 2017, "Electrification of Alpine Villages in Nepal," 8th International Conference on Appropriate Technology 2017, Academic Society of Appropriate Technology, December 1 - 2, Seoul National University, Seoul, Korea
• Ji-Hyun Moon, Seul-Ki Choi, Herb Rhee and Ahn, S.H., 2017, "Field research at rural area in Tanzania to establish the electrification project by Official Development Assistance," 8th International Conference on Appropriate Technology 2017, Academic Society of Appropriate Technology, December 1 - 2, Seoul National University, Seoul, Korea.
• Herb Rhee, Chu, W.S., Kim, J.S., Park, S., Ahnna Lee, Seulki Choi, Jihyun Moon, Karoli Njau and Ahn, S.H., 2017, "Introduction to Tanzania-Korea Innovative Technology and Energy Center Based on Renewable Energy and Local Industry," 8th International Conference on Appropriate Technology 2017, Academic Society of Appropriate Technology, December 1 - 2, Seoul National University, Seoul, Korea.
• Kim, M.S., Yu, J. H., 2017, "Extention of Vaccine Cold-chain using Renewable Energy in Nepal," The 8th International Conference on Appropriate Technology (ICAT), 2017/12/08, Seoul National University, Seoul, Korea.
• Park, S., Mun, J.W., Kim, M.S., Yu, J. H., Chu, W.S., and Ahn, S.H., 2017, "Vaccine Supply Management in Off-Grid Territories: A Case Study in Tanzania," 8th International Conference on Appropriate Technology (ICAT) 2017, Academic Society for Appropriate Technology, December 1-2, Global Convention Plaza, Seoul National University, Seoul, Korea.
• Chu, W.S., Kim, J.S., Park, S. and Ahn, S.H., 2017, "Vision of Korean Official Development Assistance Based on Appropriate Technology," 8th International Conference on Appropriate Technology (ICAT) 2017, Academic Society for Appropriate Technology, December 1~2, Global Convention Plaza, Seoul National University, Seoul, Korea.
• Bhandari, B., Yaroslav Zisser, Kim, J.S. and Ahn, S.H., 2017, "Modeling of net metering using smart meters for off-grid power systems," 2017 International Conference on Engineering Innovation, Seoul National University Graduate School of Engineering Practice, Seoul National University, Seoul, Korea.
• Kim, J.S., Herb Rhee and Ahn, S.H., 2017, "Regional Investigation about Energy Supply Status and Electrification of Tanzania Rural Area - Mkalama Village," 8th International Conference on Appropriate Technology 2017, Academic Society of Appropriate Technology, December 1 - 2, Seoul National University, Seoul, Korea.
• Kim, J.S., Park, S. and Ahn, S.H., 2017, "Service Learning: Development and Spreading of Appropriate Technology via Project Based Course," 8th International Conference on Appropriate Technology 2017, Academic Society of Appropriate Technology, December 1 - 2, Seoul National University, Seoul, Korea.
• Yu, J. H., Kim, D.R., Choi, I.G., Park, H.B. and Ahn, S.H., 2017, "Improvement on Evaporative Cooling Vest using Water Reservoir and Cooling Fans," 8th International Conference on Appropriate Technology (ICAT), Academic Society for Appropriate Technology (ASAT), Dec 1~2, Seoul, Korea.
• Ahn, S.H., Caroline Sunyoung Lee, Chulki Song, Mun, J.W., Kim, M.S., Min, S.H., Poudel, S.R., and 15 others., "Electrification of the Alpine Villages in Nepal", International Conference on Energy and Sustainability 2017 (ICES 2017), August 9-12, Nelson Mandela African Institution of Science and Technology Arusha, Tanzania.
• Mun, J.W., Lee, J.Y., Kim, M.S., Ahn, S.H., “Appropriate Monitoring Platform for Renewable Energy Plants in Nepal,” International Conference on Energy and Sustainability 2017 (ICES 2017), August 9-12, Nelson Mandela African Institution of Science and Technology Arusha, Tanzania.
• Park, Samuel, Mun, J.W., Kim, M.S., Yu, J.H., Kim, M.S., Li, T., Chu, W.S., and Ahn, S.H., “Vaccine Supply Management in Developing Countries: A Case Study in Tanzania with Vaccine Carrier,” International Conference on Energy and Sustainability 2017 (ICES 2017), August 9-12, Nelson Mandela African Institution of Science and Technology Arusha, Tanzania.
• Mun, J.W., Lee, J.Y., Kim, M.S. and Ahn, S.H., “Appropriate Monitoring Platfor Renewable Energy Plants in Nepal,” International Symposium on Green Manufacturing and Applications (ISGMA 2017), June 27~July 1, Hwabaek International Convention Center (HICO), Gyeongju, Korea.
• Ahn, S.H., “Extension of Vaccine Cold Chain Using Portable Carrier and Energy Technology” Biologistics World Korea 2017, May 24, Novotal Ambassador Gangnam, Korea.

•Ahn, S.H., 2018, "Green and Appropriate Technologies for the 4th Industrial Revolution," Green, Smart, Vision and Development, Seoul National University, November 9.
•Ahn, S.H., 2018, "Green and Appropriate Technologies in the 4th Industrial Revolution," 기계공학 콜로퀴엄, 서울대학교기계항공공학부, 11월 2일.
•Ahn, S.H., 2018, "적정기술과 발명," 전국대학발명동아리연합회, 숭실대, 9월 15일.
•Ahn, S.H., 2018, "Green and Appropriate Technologies in the 4th Industrial Revolution," International Symposium of Precision Engineering and Sustainable Manufacturing (PRESM) 2018, Sapporo Convention Center, Sapporo, Japan, July 4
•Ahn, S.H., 2018, "Water-Energy Nexus Appropriate Technology for Developing Countries," Global Engagement & Empowerment Forum on Sustainable Development, Yonsei University, Feb. 7.
•Ahn, S.H., 2017, "적정기술을 사용한 대학의 교육, 연구, 봉사," 서울대학교 화학생물공학부 화학산업경영, 12월 5일.
•Ahn, S.H., 2017, “제4차 산업혁명시대의 신재생 에너지 기반 적정기술-네팔 고산지역의 예,” 한국정밀공학회 춘계학술대회 녹색생산부문 초청강연(keynote), 제주 라마다 호텔, 5월 18일.
•Ahn, S.H., 2017, "적정기술을 사용한 대학의 교육, 연구, 봉사," 서울대학교 화학생물공학부 화학산업경영, 12월 5일
•Ahn, S.H., 2017, "제4차산업시대의 적정기술," 서울대 글로벌사회공헌단 6/23.
•Ahn, S.H., 2017, "적정기술과 선교," 한국선교연구원 세미나, 남서울교회비전센터 6/16.