All preprints

• A High-Speed and Structure-Preserving Retinex Method Based on a Complex Exponential Kernel: XCR

  Toma Okugawa

  DOI: https://doi.org/10.51094/jxiv.1961

  • Low-light image enhancement
  • Retinex theory
  • XCR
  • structure preservation
  • separable kernel
  • high-speed processing
  • image enhancement

  Downloads ：0 - Submitted 2025-11-16 12:52:41 UTC - Posted 2025-11-20 09:58:24 UTC

  • PDF (日本語)

• Structural Analysis of Damage Severity and Collision Direction in Four-Wheel Vehicle-to-Vehicle Accidents Using the National Police Agency Traffic Accident Statistics Open Data (Japan)

  Katsushi Yoshii

  DOI: https://doi.org/10.51094/jxiv.1965

  • Traffic accidents
  • NPA Traffic Accident Open Data
  • Vehicle damage severity
  • Impact direction
  • vehicle-to-vehicle
  • Ordered logit model
  • Visualization of empirical data

  Downloads ：0 - Submitted 2025-11-17 00:16:15 UTC - Posted 2025-11-20 09:57:11 UTC

  • PDF (日本語)

• AI-Powered Predictive Analytics for Early Detection of Cardiovascular Diseases Using Electronic Health Records A Retrospective Cohort Study

  Zhang Ying, Sun Xin

  DOI: https://doi.org/10.51094/jxiv.1847

  • artificial intelligence
  • cardiovascular diseases
  • predictive analytics
  • electronic health records
  • early detection
  • deep learning

  Downloads ：26 - Submitted 2025-10-29 02:44:08 UTC - Posted 2025-11-14 10:24:33 UTC

  • PDF

• Accuracy Validation of UAV-based Photogrammetry on Small Rivers using Two-Course Flight Design

  Takumi Kakihara, Ariyo Kanno

  DOI: https://doi.org/10.51094/jxiv.1940

  • UAV-based Photogrammetry
  • Small River
  • Along-river two-course flight

  Downloads ：31 - Submitted 2025-11-12 03:46:40 UTC - Posted 2025-11-13 01:29:37 UTC

  • PDF (日本語)

• Updated SOFA Score (SOFA-2 score): Elaboration on SOFA-2 project

  Tomoko Fujii, Shiro Tanaka, Shigetaka Kobari, Satoru Hashimoto

  DOI: https://doi.org/10.51094/jxiv.1929

  • SOFA-2 score
  • organ dysfunction
  • Japan ICU patient database
  • Delphi
  • validation

  Downloads ：72 - Submitted 2025-11-07 11:53:28 UTC - Posted 2025-11-13 01:24:16 UTC

  • PDF (日本語)

• Metasomatism at a metapelite–ultramafic rock contact at the subduction interface: Insights into mass transfer and fluid flow at the mantle wedge corner

  Ryosuke Oyanagi, Masaoki Uno, Atsushi Okamoto

  DOI: https://doi.org/10.51094/jxiv.1562

  • Metasomatism
  • Mass transfer
  • Mantle wedge
  • Serpentinite
  • Sanbagawa belt

  Downloads ：26 - Submitted 2025-11-11 06:22:29 UTC - Posted 2025-11-12 01:00:15 UTC

  • PDF

• Energy harvesting for known pulse wave at matched termination of transmission line by time-varying circuit

  Hajime Sakamoto, Hiroyasu Ito, Kenta Yamamoto, Naoto Ishii, Takashi Hisakado

  DOI: https://doi.org/10.51094/jxiv.1931

  • Energy Harvesting
  • Time-varying system
  • Pulse Wave
  • Transmission Line
  • Matched Termination

  Downloads ：28 - Submitted 2025-11-07 13:16:19 UTC - Posted 2025-11-12 00:57:57 UTC

  • PDF (日本語)

• Proposal of Fast Single-Scale Retinex and Evaluation of Real-Time Human Pose Estimation Performance under Low-Light Conditions

  Toma Okugawa

  DOI: https://doi.org/10.51094/jxiv.1897

  • Retinex theory
  • Single-Scale Retinex (SSR)
  • Fast Single-Scale Retinex (FSSR)
  • Illumination Correction
  • Real-time processing
  • Hand skeleton detection
  • Acceleration

  Downloads ：55 - Submitted 2025-11-03 13:52:23 UTC - Posted 2025-11-12 00:55:51 UTC

  • PDF (日本語)

• The Humanities Classroom with AI: Generative AI Ito-wo-Kashi (5)

  Shoichi YOKOYAMA, Masaki HISANO

  DOI: https://doi.org/10.51094/jxiv.1855

  • Generative AI
  • Humanities
  • Symbol Grounding Problem
  • Turing Test
  • Noh Theatre
  • Yugen
  • Affordance
  • Persona
  • Dialogic Education
  • Meaning Understanding

  Downloads ：79 - Submitted 2025-10-29 12:20:45 UTC - Posted 2025-11-11 05:35:59 UTC - Versions: 3

  • PDF_ver.3 (日本語)

• Distinct malignant epithelial tumors associated with Felis catus papilloma virus type 3 and type 4 co-infection in a domestic cat

  Hinata Abe, Nanami X Kato, Mika Tanabe, Taichi Shimabukuro, Saki Hashimoto, Takuya Hirai, Naoyuki Fuke, Akatsuki Saito

  DOI: https://doi.org/10.51094/jxiv.1905

  • Basosquamous cell carcinoma
  • Bowenoid in situ carcinoma
  • Co-infection
  • Felis catus papillomavirus

  Downloads ：55 - Submitted 2025-11-05 12:46:36 UTC - Posted 2025-11-10 01:09:17 UTC

  • PDF
  • Supplement_PDF

• Language Independent Speech-to-Singing-Voice Conversion

  Akinori Ito

  DOI: https://doi.org/10.51094/jxiv.1902

  • Singing voice
  • voiced/unvoiced classification
  • HuBERT

  Downloads ：52 - Submitted 2025-11-05 01:34:12 UTC - Posted 2025-11-10 01:07:20 UTC

  • PDF

• TAD Theory and Its Applications A Mathematical Framework for Visualizing Histories

  Yasuo Matsui

  DOI: https://doi.org/10.51094/jxiv.1593

  • History-Dependent Dynamics
  • Relaxation Function and Forgetting Curve
  • Logistic Growth Model
  • Kovacs Effect (Education and Memory Model)
  • Inventory Management and Advertising Effect
  • Epidemiological Model (SIR)
  • Economic Growth Model
  • Large Language Models (Transformer)

  Downloads ：58 - Submitted 2025-10-04 12:15:52 UTC - Posted 2025-11-06 07:08:37 UTC - Versions: 2

  • PDF_ver.2 (日本語)
  • Supplement-1_CSV_ver.2 (日本語)
  • Supplement-2_CSV_ver.2 (日本語)
  • Supplement-3_XLSX_ver.2 (日本語)
  • Supplement-4_XLSX_ver.2 (日本語)
  • Supplement-5_XLSX_ver.2 (日本語)
  • Supplement-6_XLSX_ver.2 (日本語)

• International Trends and Key Issues in Lunar Fusion Power System

  Tatsuki Nakatani, Shima Ariyoshi

  DOI: https://doi.org/10.51094/jxiv.1772

  • Energy Policy
  • Space Policy
  • Lunar Fusion Power System
  • Lunar Development

  Downloads ：43 - Submitted 2025-10-20 05:25:26 UTC - Posted 2025-11-04 08:00:22 UTC

  • PDF (日本語)

• Examining the Adaptive significance of colour change in the freshwater shrimp Neocaridina davidi

  Yuki Ishiba, Ayanosuke Takenaka, Reo Sato, Shohta Nakayama, Yusuke Fuke

  DOI: https://doi.org/10.51094/jxiv.1804

  • color substrate
  • background matching
  • DNA barcoding
  • RGB luminance values

  Downloads ：74 - Submitted 2025-10-29 23:43:51 UTC - Posted 2025-11-04 07:19:10 UTC

  • PDF (日本語)

• A Dynamical Model of Subjectivity Toward an Integrative Computational Architecture for the Mind

  Takeo Imaizumi

  DOI: https://doi.org/10.51094/jxiv.1794

  • Discrete Dynamical Systems
  • Bifurcation Theory
  • Mathematical Psychology
  • Computational Psychiatry
  • Cognitive Architecture
  • Free Energy Principle (FEP)
  • Perceptual Control Theory (PCT)

  Downloads ：37 - Submitted 2025-10-24 02:17:38 UTC - Posted 2025-11-04 07:17:09 UTC

  • PDF

• Electric potentials and field lines for uniformly-charged tube and cylinder expressed by Appell's hypergeometric function and integration of Z(u|m) sc(u|m)

  Daisuke Takahashi

  DOI: https://doi.org/10.51094/jxiv.1133

  • Appell's hypergeometric function
  • electric field line
  • Jacobi zeta function
  • elliptic integrals

  Downloads ：288 - Submitted 2025-03-09 16:54:40 UTC - Posted 2025-10-28 02:43:46 UTC - Versions: 3

  • PDF_ver.3

• Two complementary forest-originated Gigaspora spp. shifted shoot-to-root ratio for growth improvement in Cryptomeria japonica seedlings Gigaspora AMF shifted shoot-to-root ratio in Cryptomeria japonica

  Akotchiffor Kevin Geoffroy Djotan, Yosuke Matsuda, Norihisa Matsushita, Kenji Fukuda

  DOI: https://doi.org/10.51094/jxiv.1773

  • Forest AMF
  • Inoculation assays
  • Gigaspora rosea
  • Gigaspora margarita
  • AMF cohabitation

  Downloads ：32 - Submitted 2025-10-23 05:31:25 UTC - Posted 2025-10-27 08:44:13 UTC

  • PDF
  • Supplement_PDF

• Interorganizational Cooperation through Psychological Safety A Case Study on Japanese Regional Rice-Wine (Sake) Industry

  Byeongsik KIM, Youngjae KOH

  DOI: https://doi.org/10.51094/jxiv.1763

  • Competition
  • Cooperation
  • Psychological Safety
  • Japanese Sake Brewery Industry

  Downloads ：47 - Submitted 2025-10-18 07:07:57 UTC - Posted 2025-10-24 01:43:42 UTC

  • PDF

• An Inquiry into the Inevitability of Hallucination as a Structural Problem of Large Language Models Reconsidering the Relationship between Grammar Learning and Knowledge Acquisition

  Junichiro Niimi

  DOI: https://doi.org/10.51094/jxiv.1746

  • Large Language Model
  • Natural Language Processing
  • Deep Learning
  • Hallucination

  Downloads ：89 - Submitted 2025-10-16 08:35:51 UTC - Posted 2025-10-24 01:41:19 UTC

  • PDF (日本語)

• Quantitative analysis of artworks: emotions and color usage within Vincent van Gogh

  Masaki Suyama, Kosuke Sato

  DOI: https://doi.org/10.51094/jxiv.1631

  • Color
  • Emotion
  • State Space Model
  • van Gogh
  • LIWC

  Downloads ：40 - Submitted 2025-10-08 12:45:24 UTC - Posted 2025-10-24 01:37:51 UTC

  • PDF (日本語)

• Curvature Electromagnetism: Deriving Maxwell from Geometry Part III of the Curvature Field Series (A Minimal Geometric Route to Maxwell)

  seungil-il kim

  DOI: https://doi.org/10.51094/jxiv.1770

  • Curvature Electromagnetism
  • Deriving Maxwell
  • Constitutive laws
  • Uniaxial anisotropy
  • Berry-like connection
  • Aharonov–Bohm regularization
  • TE/TM mode ratio
  • Sub-percent limit

  Downloads ：62 - Submitted 2025-10-19 16:03:30 UTC - Posted 2025-10-24 01:35:34 UTC

  • PDF

• Decrease in Transcriptomic Liberality during Batch Cultivation of Streptococcus salivarius ssp. thermophilus in Milk- A Comparative Observation with CHO Cells

  Norichika OGATA

  DOI: https://doi.org/10.51094/jxiv.1761

  • Liberality

  Downloads ：28 - Submitted 2025-10-17 12:05:14 UTC - Posted 2025-10-24 01:33:42 UTC

  • PDF

• Aging, disease and transcriptomic liberality derived from human RNA-seq data

  Norichika OGATA

  DOI: https://doi.org/10.51094/jxiv.1758

  • Liberality

  Downloads ：34 - Submitted 2025-10-17 12:02:59 UTC - Posted 2025-10-24 01:30:43 UTC

  • PDF

• Utilizing Large Language Models in Research Practice: Insights from Southeast Asia

  Nobuaki Yagi

  DOI: https://doi.org/10.51094/jxiv.1644

  • South East Asian Area Studies
  • Malaysian Politics
  • Large Language Model
  • GPT
  • BERT

  Downloads ：60 - Submitted 2025-10-10 07:35:08 UTC - Posted 2025-10-23 07:38:59 UTC - Versions: 2

  • PDF_ver.2 (日本語)

• Prevalence of antibiotic-resistant Escherichia coli exceeds that of antibiotic-resistant coliforms in an urban river in Japan

  Kazuaki Matsui, Rahman MD Mizanur, Tsuguri Inui, Mizuki Oda, Takeshi Miki

  DOI: https://doi.org/10.51094/jxiv.1769

  • Antimicrobial resistance
  • combined sewer overflow
  • E. coli
  • coliform
  • CHROMagar ECC

  Downloads ：37 - Submitted 2025-10-19 12:37:01 UTC - Posted 2025-10-22 01:59:46 UTC

  • PDF