R. Uto, K. Sako, and R. Kitamura:Study on a slope stability analysis expressed by the body force method considered unsaturated seepage,Proc. of the 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, JGS-016, 2019.
Ryosuke Kitamura and Kazunari Sako: Probability and Statistics Approach for Determining Pore Size Distribution of Coarse-Grain Soil, Geotechnical Engineering Journal of the SEAGS & AGSSEA, Vol.50, No.1, pp.54-62, 2019.
Keigo Koizumi, Keiji Sakuradani, Kazuhiro Oda, Mitsuru Komatsu, and Shinichi Ito:Relationship between initial quasi-saturated volumetric water content and rainfall-induced slope deformation based on a model slope experiment,Journal of Geo Engineering, Vol.13, No.4, pp.179-186, 2018.
Shinichi Ito, Kazuhiro Oda, Keigo Koizumi, and Yohei Usuki: Identification of slopes with higher risk to slope failures based on information processing techniques, International Journal of GEOMATE, Vol.8, No.2, pp.1226-1231, 2015.
K. Sako, M. Moriiwa, T. Satomi:Experimental Consideration of Evaporation Efficiency β of Unsaturated Sandy Soil Surface,Proc. of the 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, pp.226-229, 2015.
Hisakazu Sakai, Kazuyuki Izuno, Kazunari Sako, Takahiro Endo, Ryoichi Fukagawa and Kenzo Toki:Seismic assessment of Japanese traditional wooden structure by dynamic interaction numerical analysis of surrounding ground,Jouranal of Natural Disaster Science, Vol.35, No.1, pp.1-20, 2014.
Nobutaka Hiraoka, Takefumi Suda, Kazuhiro Hirai, Katsuhiko Tanaka, Kazunari Sako, Ryoichi Fukagawa, Makoto Shimamura, Asako Togari: Improved Measurement of Soil Moisture and Groundwater Level Using Ultrasonic Waves,Jpn. J. Appl. Phys., Vol.50, pp.07HC19-1-07HC19-5, 2011.
Yuko Ishida,Ryoichi Fukagawa,Kazunari Sako,Ikuo Yasukawa, K. Ikeda: Cultural heritage sites in Shiga prefecture in danger of natural disasters,Journal of Disaster Research, Vol.6, No.1, pp.88-95, 2011.
Junko Nakaya,Kazunari Sako,S. Mitsutani, Ryoichi Fukagawa:Hydrological environment in subsurface steep slope -groundwater flow passageway on slope behind Kiyomizudera-,Journal of Disaster Research, Vol.6, No.1, pp.80-87, 2011.
Kazunari Sako,Ryoichi Fukagawa, Tomoaki Satomi: Slope monitoring system at a slope behind an important cultural asset,Journal of Disaster Research, Vol.6, No.1, pp.70-79, 2011.
Ryosuke Kitamura, Kazunari Sako: Contribution of "Soils and Foundations" to studies on rainfall-induced slope failure,Soils and Foundations, Vol.50, No.6, pp.955-964, 2010.
Ha Hong Bui,Ryoichi Fukagawa,Kazunari Sako, John C. Wells: Slope stability analysis and discontinuous slope failure simulation by elasto-plastic smoothed particle hydrodynamics (SPH),Geotechnique, Vol.61, No.7, pp.565-574, 2010.
Ha H. Bui, K. Sako and R. Fukagawa:Slope Stability Analysis and Slope Failure Simulation by SPH,The 17th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE), pp.1578-1581, 2009.
K. Tanaka, T. Suda, K. Hirai, K. Sako, and R. Fukagawa:Monitoring of Soil Moisture and Groundwater Level Using Ultrasonic Waves to Predict Slope Failures, Japan,J. Appl. Phys., 48, 09KD12, 2009.
Ha H. BUI, R. Fukagawa, K. Sako and S. Ohno:Lagrangian Mesh-Free Particles Method (SPH) for Large Deformation and Failure Flows of Geomaterial using Elastic-Plastic Soil Consitutive Model, International Journal for Numerical and Analytical Methods in Geomechanics, Vol.32(12),pp.1537-1570,2008.
Ha H. Bui, K. Sako and R. Fukagawa:Numerical Simulation of Soil-Water Interaction Using Smoothed Particle Hydrodynamics (SPH) Method,International Journal of Terramechanics, Vol.44, pp.339-346, 2007.
Kazunari Sako, Ryosuke Kitamura:A practical numerical model for seepage behavior of unsaturated soil, Soils and Foundations, Vol.46, No.5, pp.595-604, 2006.
R. Kitamura, K. Sako, and K. Matsuo:A Research Strategy for Prediction of Slope Failures due to Heavy Rain,Proc. of 12th Asian Regional Conference, pp.1535-1538, 2003.
R. Nakajima, K. Sako, S. Ito, and R. Kitamura:Consideration on a characteristic length in a concept model for Soil-Water Characteristic Curves,Proc. of the Technical Forum on Mitigation of Geo-disasters in Asia, Research Paper, pp.162-167, 2019.
S. Ito, T. Danjo, T. Ishizawa, S. Baba, and K. Sako:Data assimilation of parallel tanks model based on measurement data of groundwater level on full-scale test,Proc. of the Technical Forum on Mitigation of Geo-disasters in Asia, Research Paper, pp.142-145, 2019.
K. Sako, S. Sato, M. Moriiwa, M. Fukaya, S. Yamamoto, S. Ito, and R. Kitamura:Application of the Kita-Sako model to soil-water characteristic curves of bentonaite/sand mixture,Proc. of the 7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT2019, pp.179-184, 2019.
Shinichi Ito, Kazuhiro Oda, Keigo Koizumi, and Yohei Usuki: Identification of slopes with higher risk to sediment disasters due to localized torrential rains based on artificial neural networks and mathematical statistics,The Proceedings of the 25th International Ocean and Polar Engineering Conference, Vol.2, pp.740-746, 2015.
Shinichi Ito, Kazuhiro Oda, Keigo Koizumi, Kyohei Umemura, and Yohei Usuki: Method for hazard assessment of slope failures based on information processing techniques, The Proceedings of fourth international conference on geotechnique, construction materials and environment, pp.66-71, 2014.
Kazuhiro Oda, Shinichi Ito, and Keigo Koizumi:Method for hazard assessment to deep-seated catastrophic landslides due to heavy rain with both artificial neural network and mathematical statistics, The Proceedings of the International Conference of the International Association for Computer Methods and Advances in Geomechanics, pp.1785-1790, 2014.
Takayuki Onishi, Keigo Koizumi, Kazuhiro Oda, Shinichi Ito, and Sadayuki Kamide: Estimation of volume water content using an electrical resistivity survey for monitoring shallow landslides,The Proceedings of the 24th International Ocean and Polar Engineering Conference, Vol.2, pp.737-741, 2014.
Kazuhiro Oda, Shinichi Ito, and Keigo Koizumi: A method for risk assessment to deep-seated catastrophic landslides caused by heavy rain based on artificial intelligence and mathematical statistics, The Proceedings of the 24th International Ocean and Polar Engineering Conference, Vol.2, pp.610-615, 2014.
Kazunari Sako, Masayuki Tabata, Ryosuke Kitamura, Masayuki Niisaka:Slope stability analysis by considering unsaturated seepage force in unsaturated slope,Proc. of the sixth International Conference on Unsaturated Soils (UNSAT 2014), pp.1279-1285, 2014.
M. Tabata, K. Sako, N. Nisaka, and R. Kitamura:A Study on Effects of Water Content on Slope Stability,Proc. of 7th International Joint Symposium on Problematic Soils and Environment in Asia (JS-Okinawa), pp.119-122,2013.
M. Kawamura, K. Sako, and R. Kitamura:Application of Potential Slip Plane to Estimation of Earth Pressure,Proc. of 7th International Joint Symposium on Problematic Soils and Environment in Asia (JS-Okinawa), pp.123-126,2013.
T. Danjo, K. Sako, N. Iwasa, and R. Fukagawa: Examination of Strain Measurement in the Ground using Soil Tank Test for Practical Realization of NNS,Proc. of 18th Southeast Asian Geotechnical Conference (18SEAGC), pp.537-542, 2013.
Kazunari Sako, Mitsuhide Yamada, Ryosuke Kitamura: Application of Potential Slip Plane to Slope Stability, Earth Pressure and Bearing Capacity,Proc. of 18th Southeast Asian Geotechnical Conference (18SEAGC), pp.513-518, 2013.
R. Kitamura, K. Sako, M. Yamada, K. Araki, and Y. Miyamoto: Unsaturated Soil Mechanics aided by Probability Theory and Statistics,Proc. of 18th Southeast Asian Geotechnical Conference (18SEAGC), pp.347-351, 2013.
T. Danjo, K. Sako, N. Iwasa, Y. Omura, and R. Fukagawa: Experimental tests on a fusion technique with monitoring and reinforcement method for rainfall-induced slope failures,Proc. of 15th International conference on Experimental Mechanics, Paper Ref 2761, 1-5, 2012.
N. Hiraoka, T. Mishina, T. Kurohara, K. Tanaka, K. Sako, R. Fukagawa, A. Togari, H. Morishima, and M. Shimamura: Monitoring of soil moisture and groundwater level using an embeded high-frequency ultrasonic detector for prediction of slope failures,Proc. of 15th International conference on Experimental Mechanics, Paper Ref 2672, 1-6, 2012.
Kazunari Sako, Toru Danjo, Ryoichi Fukagawa, Ha Hong Bui: Measurement of pore-water and pore-air pressure in unsaturated soil,Proc. of the 5th Asia-Pacific Conference on Unsaturated Soils, pp.443-448, 2011.
E. Calo, K. Sako, R. Kitamura, and M. Tabata: Slope stability analysis with change in apparent cohesion and seepage force,Proc. of the 5th Asia-Pacific Conference on Unsaturated Soils, pp.715-720, 2011.
Kazunari Sako, Toru Danjo, Ha Hong Bui, Ryoichi Fukagawa: Behavior of pore-water and pore-air pressure in unsaturated soil using laboratory soil tank experiments,The 2nd Japan-Korea Joint Workshop on Unsaturated Soils and Ground, JW-Fukuoka 2011, pp.31-48, 2011.
Ha Hong Bui, Kazunari Sako, Ryoichi Fukagawa, C.T. Nguyen: An investigation of riverbank failure due to water level change using two-phase flow SPH model,Proc. of 1st Computational Advances in Numerical and Analytical Methods, Direct and Inverse Problems, Practical Applications, IACMAG2011, pp.116-123, 2011.
K. Sako, T. Satomi, J. Nakaya, Y. Ishida and R. Fukagawa: Multipoint Monitoring Method to Prevent Slope Disasters during Rainfall for A Slope behaind An Important Cultural Asset, Proc. of the International Symposium on Geo-informatics and Zoning for Hazard Mapping (GIZ2009), pp.119-124, 2009.
K. Sako and R. Kitamura: A consideration on the fitting parameter of KITA-SAKO model,Proc. of the 4th Asia Pacific Conference on Unsaturated Soils (AP-UNSAT2009), pp.843-848, 2009.
E. Calo, Y. Inagaki, R. Kitamura and K. Sako: Modified slope stability analysis for estimation of change in apparent cohesion,Proc. of the 4th Asia Pacific Conference on Unsaturated Soils (AP-UNSAT2009), pp.903-907, 2009.
Ha H. Bui, R. Fukagawa, K. Sako, J.C. Wells: Numerical simulation of granular materials based on smoothed particle hydrodynamics,Proc. of Powders and Grains 2009, pp.575-578, 2009.
K.Sako, R.Kitamura, T.Satomi and R.Fukagawa: A research on the quantitative evaluation of slope stability during rainfall,Proc. of Prediction and Simulation Methods for Geohazard Mitigation (IS-Kyoto), pp.533-538, 2009.
K. Sako and R. Kitamura: Kitamura model for seepage behavior of unsaturated soil,Proc. of 3rd Asian conference on unsaturated soils, pp.397-403, 2007.
H.H.Bui,R.Fukagawa and K.Sako: Smoothed particle hydrodynamics for soil mechanics,Proc. of The Sixth European Conference On Numerical Methods In Geotechnical Engineering, pp.275-281, 2006.
K.Sako, R.Kitamura and R. Fukagawa: Study of slope failure due to rainfall: A comparison between experiment and simulation,Proc. of the fourth international conference on unsaturated soils, Vol.2, pp.2324-2335, 2006.
K. Sako, K. Iwasaki, R. Fukagawa and I. Yasukawa: Field monitoring system for natural disasters due to slope failures caused by heavy rain,Proc. of the international workshop on the mitigation and countermeasures of ground environment (IW-SHIGA2005), pp.45-48, 2005.
K. Sako and R. Kitamura: 2-D Unsaturated Seepage Analysis for Soil Tank Test,Proc. of 15th Southeast Asian Geotechnical Society Conference, pp.343-348, 2004.
K. Sako and R. Kitamura: Water retention and flow mechanism in unsaturated soil,Proc. of the 2nd Asian conference on Unsaturated Soils, UNSAT-ASIA2003, pp.345-350, 2003.
K. Sako, K. Araki and R. Kitamura: Research on probabilistic estimation of shear strength parameters for slope stability analysis,Proc. of The Sino-Japanese Symposium On Geotechnical Engineering, Geotechnical Engineering In Urban Construction, pp.320-325, 2003.
K. Sako and R. Kitamura: A Numerical Model For Seepage Behavior Of Unsaturated Soil,Proc. of the International Conference on PROBLEMATIC SOILS, Vol.2, pp.459-465, 2003.
K.Sako, K.Araki, and R. Kitamura: Synthetic system to predict slope failures due to rainfall,Proc. of International Conference on Fast Slope Movements-Prediction and Prevention for Risk Mitigation (IC-FSM2003), pp.457-461, 2003.
K. Sako, K. Matsuo and R. Kitamura: Numerical analysis for seepage of rainwater and evaporation of pore water in unsaturated soil,Proc. of International Symposium on Groundwater Problems Related to Geo-Environment (IS-OKAYAMA), pp.509-515, 2003.
Kazuari Sako, Kazumasa Matsuo, Ryosuke Kitamura: A research strategy for prediction of slope failures due to rainfall,Proc. of the International Conference on Physical Modeling in Geotechnics (ICPMG'02), pp.771-776, 2002.
R. Kitamura, Y. Miyamoto and K. Sako: In situ measurement of suction change in soil due to rainfall in Kagoshima, Japan,Proc. of 14th Southeast Asian Geotechnical Conference, Geotechnical Engineering Meeting Society's Needs, Vol.3, pp.291-294, 2001.
R. Kitamura and K. Sako: A synthetic research strategy for prediction of slope failures due to heavy rain,Proc. of 14th Southeast Asian Geotechnical Conference, Geotechnical Engineering Meeting Society's Needs, Vol.3, pp.325-328, 2001.
R. Kitamura and K. Sako: A consideration on apparent cohesion of unsaturated sandy soil,Proc. Modern Tunneling Science and Technology (IS-KYOTO 2001), pp.95-100, 2001.
Ryosuke Kitamura, Kazunari Sako: Synthetic system for prediction of slope failure due to rainfall,Proc. of the 1st Asian-Pacific Congress on Computational Mechanics, Vol.1, pp.381-386, 2001.
Kazunari Sako, Ryosuke Kitamura, Mitsuhide Yamada: A consideration on effective cohesion of unsaturated sandy soil,Proc. of the 4th International Conference on Micromechanics of Granular Media, Powders and Grains 2001, pp.39-42, 2001.
Ryosuke Kitamura, Kazunari Sakoh, Mitsuhide Yamada: A new slope stability analysis for Shirasu slopes in Japan,Proc. of the 1st Asian Conference on Unsaturated Soils (UNSAT-ASIA2000), pp.795-799, 2000.
Yuta Jikuya, Kazunari Sako, Shinichi Ito:A Consideration on Numerical Model for the Relationship Between Evaporation Efficiency and Volumetric Water Content,Proc. of 1st International Symposium on Construction Resources for Environmentally Sustainable Technologies, CREST2020, pp.221-230, 2021.
H. Yoshida, S. Miyachi, K. Sako, and S. Ito:Experimental study on seepage behavior of soil around a drain in river embankment contained Shirasu,Proc. of the Technical Forum on Mitigation of Geo-disasters in Asia, Technical Note, pp.180-181, 2019.
R. Nakajima, K. Sako, S. Ito, and R. Kitamura:Consideration on a characteristic length in a concept model for Soil-Water Characteristic Curves,Proc. of the Technical Forum on Mitigation of Geo-disasters in Asia, Research Paper, pp.162-167, 2019.
T. Tsuyama, K. Sako, R. Uto, S. Ito, and R. Kitamura:Calculation Results of Infinite Slope Method expressed by Body Force Method/ Water Pressure Method considered Unsaturated Seepage Behavior,Proc. of the 2nd Joint Seminar on Landslide, Flood Disasters and the Environmental Issues, Paper No.S2-1, pp.1-8, 2018.
深川良一,酒匂一成,里見知昭:表層すべり型斜面崩壊に対するモニタリングシステムの現状と新たな試み,Journal of The Mining and Materials Processing Institute of Japan (J of MMIJ), 総説,Vol.26, pp.49-57, 2010.
酒匂一成,深川良一,安川郁夫,里見知昭,Bui Hong Ha,仲矢順子:清水寺敷地内斜面における地盤調査結果,歴史都市防災論文集,Vol.3,pp.105-110,2009.
K.Sako, R.Fukagawa, R.Kitamura and I.Yasukawa:Field measurement for natural disasters due to slope failures caused by heavy rainfall,Proceedings of 2nd Japan-Taiwan Joint Workshop, pp.120-126, 2006.
K. Sako and R. Kitamura:A study on instability of slopes due to rainfall,Vietnam-Japan Joint Seminar on Geotechnics and Geoenvironment Engineering, pp.151-156, 2004.