Research Achievements - Original paper -

Ground source heat pump systems in Central Asia: A case study from Dushanbe, Tajikistan

Saeid Mohammadzadeh Bina, Hikari Fujii, Dursulton Qaisova, Richard Lein, Jamshed Rahmatov, Fumiaki Inagaki

Geothermics ( Geothermics )  128   2025.05  [Refereed]

Research paper (journal)   International Co-author

DOI

Area Studies as “Jissenchi (Practical Knowledge)" The Case of Energy Access Improvement in Tajikistan

KEIO SFC Journal ( KEIO SFC Academic Society )  24 ( 2 ) 86 - 93   2025.03  [Refereed]  [Invited]

Research paper (journal)   Single author

A predictive model of long-term performance assessment of Ground Source Heat Pump (GSHP) systems in Japanese regions

Saeid Mohammadzadeh Bina, Hikari Fujii, Hiroyuki Kosukegawa, Fumiaki Inagaki

Geothermics ( Geothermics )  119   2024.05  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Exploring the Macroeconomic Effects of Renewable Energy in Tajikistan: An Empirical Analysis

Mirzosaid Sultonov, Behruz Hasanov, Pirumsho Valizoda, Fumiaki Inagaki

Economies ( MDPI )  12 ( 5 )   2024.04  [Refereed]

Research paper (journal)   International Co-author

DOI

Transformation of Energy Policy in the Former Soviet Union after the Cold War

INAGAKI Fumiaki

The Journal of International Security ( Japan Association for International Security )  50 ( 4 ) 75 - 91   2023.03  [Invited]

Research paper (journal)   Single author

Use of a DNN-Based Image Translator with Edge Enhancement Technique to Estimate Correspondence between SAR and Optical Images

Hisatoshi Toriya, Ashraf Dewan, Hajime Ikeda, Norihiro Owada, Mahdi Saadat, Fumiaki Inagaki, Youhei Kawamura, Itaru Kitahara

Applied Sciences (Switzerland) ( Applied Sciences (Switzerland) )  12 ( 9 )   2022.05  [Refereed]

Research paper (journal)   International Co-author

In this paper, the local correspondence between synthetic aperture radar (SAR) images and optical images is proposed using an image feature-based keypoint-matching algorithm. To achieve accurate matching, common image features were obtained at the corresponding locations. Since the appearance of SAR and optical images is different, it was difficult to find similar features to account for geometric corrections. In this work, an image translator, which was built with a DNN (deep neural network) and trained by conditional generative adversarial networks (cGANs) with edge enhancement, was employed to find the corresponding locations between SAR and optical images. When using conventional cGANs, many blurs appear in the translated images and they degrade keypoint-matching accuracy. Therefore, a novel method applying an edge enhancement filter in the cGANs structure was proposed to find the corresponding points between SAR and optical images to accurately register images from different sensors. The results suggested that the proposed method could accurately estimate the corresponding points between SAR and optical images.

DOI

Application of Entropy Method for Estimating Factor Weights in Mining-Method Selection for Development of Novel Mining-Method Selection System

Elsa Pansilvania Andre Manjate, Mahdi Saadat, Hisatoshi Torirya, Fumiaki Inagaki, Youhei Kawamura

Journal of Sustainable Mining     2022.01  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Model scaling in smartphone GNSS‐aided photogrammetry for fragmentation size distribution estimation

Zedrick Paul L. Tungol, Hisatoshi Toriya, Narihiro Owada, Itaru Kitahara,Fumiaki Inagaki, Mahdi Saadat, Hyong Doo Jang and Youhei Kawamura

Minerals ( Minerals )  11 ( 12 )   2021.12  [Refereed]

Research paper (journal)   International Co-author

DOI

Mutual superimposing of SAR and ground-level shooting images mediated by intermediate multi-altitude images

Hisatoshi Toriya, Norihiro Owada, Mahd Saadat, Fumiaki Inagaki, AShraf Dewan, Youhei Kawamura, Itaru Kitahara

Array   12 ( 11 ) 100102 - 100102   2021.10  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Coupling nca dimensionality reduction with machine learning in multispectral rock classification problems

Brian Bino Sinaice, ,Narihiro Owada, Mahdi Saadat, Hisatoshi Toriya, Fumiaki Inagaki, Zibisani Bagai and Youhei Kawamura

Minerals ( Minerals )  11 ( 8 ) 207 - 227   2021.08  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Understanding Japanese Soft Power Policy and Its Feature in Central Asia

INAGAKI Fumiaki, USMONOV Farrukh

Central Asia and the Caucasus ( CA&C Press AB )  22 ( 1 ) 29 - 38   2021.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

US Policy in Central Asia

Fumiaki Inagaki

International Affairs   ( 86 ) 89 - 98   2016.02  [Invited]

Research paper (journal)   Single author

The Water Conflict in Central Asia: Disputes over the Tajikistani Rogun Hydro Power Station

Fumiaki Inagaki

International Affairs   ( 85 ) 107 - 115   2015.03  [Invited]

Research paper (journal)   Single author

Conceptual Design of Modernization and Estimation of Energy Efficicency Improvement for Coal Boiler in Heat Supply Stations in Kyrgyz.

Tomoyasu HIRANO, Toshikazu TSUMURA, Fumiaki INAGAKI, Yoshiko KAWABATA

砂漠研究   25 ( 3 ) 245 - 248   2015.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Central Asia and Afghanistan: New Power Grid Project "CASA1000"

Fumiaki Inagaki

International Affairs   ( 84 ) 263 - 272   2014.02  [Invited]

Research paper (journal)   Single author

The Relationship between Tajikistan and Russia

Fumiaki Inagaki

International Affairs   ( 83 ) 173 - 184   2013.02  [Refereed]  [Invited]

Research paper (journal)   Single author

International Relation in Central Asia over the Power Grid: Russia, Afghanistan and Water Disputes

Fumiaki Inagaki

Journal of World Affairs.   60 ( 9 ) 61 - 79   2012.09  [Refereed]  [Invited]

Research paper (journal)   Single author

Power Grid Reform in Central Asia: Emerging Electricity Supplier for South Asian Countries

Fumiaki Inagaki

International Affairs   ( 82 ) 169 - 182   2012.02  [Invited]

Research paper (journal)   Single author

The Uzbekistan and Tajikistan over the Water Resources.

Fumiaki Inagaki

International Affairs   ( 81 ) 281 - 190   2011.02  [Invited]

Research paper (journal)   Single author