• [title in Japanese]
  Kensuke Sawada
  2026Volume 19Issue 4 Pages 291-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.291
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• Intersection Graphs of Disks: Mathematical Properties and Algorithms
  Yoshio Okamoto
  2026Volume 19Issue 4 Pages 298-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.298
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• Estimation of Human Internal States and Application of Diffusion Models
  —Toward Understanding and Supporting the Self and Others—
  Masahiro Kohjima, Yuta Nambu
  2026Volume 19Issue 4 Pages 305-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.305
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• Study of AI Model Training Method Using Network Digital Twin in 5GC Environment
  Daiki Koyama, Minato Sakuraba, Junichi Kawasaki, Takuya Miyasaka
  2026Volume 19Issue 4 Pages 315-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.315
  JOURNAL FREE ACCESS
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• [title in Japanese]
  Shohei Kamamura
  2026Volume 19Issue 4 Pages 326-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.326
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• Network Operation and Maintenance Support Technology for Automating Countermeasures against Communication Failures Using Clustering Analysis
  Yuji Miyake, Takenori Sumi, Takeshi Suehiro
  2026Volume 19Issue 4 Pages 333-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.333
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• [title in Japanese]
  Saneyasu Yamaguchi
  2026Volume 19Issue 4 Pages 294-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.294
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• [title in Japanese]
  Nobuyoshi Kikuma
  2026Volume 19Issue 4 Pages 342-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.342
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• [title in Japanese]
  Ken Sakamura
  2026Volume 19Issue 4 Pages 350-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.350
  JOURNAL FREE ACCESS
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• [title in Japanese]
  Daiyuu Nobori
  2026Volume 19Issue 4 Pages 357-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.357
  JOURNAL FREE ACCESS
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• [title in Japanese]
  Ryo Yamamoto
  2026Volume 19Issue 4 Pages 363-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.363
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• [title in Japanese]
  Akio Oga
  2026Volume 19Issue 4 Pages 367-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.367
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• Consideration on Faraday’s Paradox:
  Do the Magnetic Field Lines of a Rotating Bar Magnet Rotate?
  Yoshio Karasawa
  2026Volume 19Issue 4 Pages 373-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.373
  JOURNAL FREE ACCESS
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• [title in Japanese]
  Ganggui Wang
  2026Volume 19Issue 4 Pages 382-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.382
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• [title in Japanese]
  Takeshi Higashino
  2026Volume 19Issue 4 Pages 384-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.384
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• [title in Japanese]
  Saneyasu Yamaguchi
  2026Volume 19Issue 4 Pages 387-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.387
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• Editors Note
  2026Volume 19Issue 4 Pages 388a-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.388a
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• [title in Japanese]
  Naoto Hoshikawa
  2026Volume 19Issue 4 Pages 388b-
  Published: 2026
  Released on J-STAGE: March 01, 2026
  
  DOIhttps://doi.org/10.1587/bplus.19.388b
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