Data Visualization
6 items
High School Tuition Gaps by Prefecture — Osaka ¥630K, Tokyo ¥490K, Rural Areas ¥457K
A 2026 reform abolished income limits for Japan's high school tuition support program and raised the private school cap to ¥457,000. But "tuition-free" means very different things depending on where you live: Osaka offers ¥630K (the national high), Tokyo covers up to the metro average, while most rural prefectures have only the national base. This article reads the structural inequality through data.
Industries Where Wages Rose or Fell Over 30 Years — Real Wages by Industry in One Chart
Japan's real wages peaked in 1997 and have been falling across all industries on average — but the story varies sharply by sector. IT & telecom has trended upward over the long term, while hospitality and food service has hit new lows across 30 years. This article reads the structural causes through industry-level data.
A Data Analysis of the 744 'At-Risk' Municipalities — The Structure That Tokyo Siphons
A 2024 analysis by Japan's Population Strategy Council classified 744 municipalities (43.3% of all 1,729) as "at risk of disappearance." Meanwhile, 25 so-called "black-hole" municipalities attract young people yet suppress birth rates. This article reads the data-driven structure of Tokyo's concentration effect on national depopulation.
Tokunoshima TFR 2.25, Higashiyama 0.76 — Mapping Birth Rates Across 1,741 Municipalities
When Japan's total fertility rate is broken down to the municipal level (2018–2022 average), a nearly three-fold gap emerges between the highest (Tokunoshima 2.25) and lowest (Higashiyama Ward 0.76). This article analyzes the social structures behind the "high west, low east" geographic pattern.
Methodology Note: Why Data-Driven Visualization Constitutes an Intervention Against Epistemic Injustice
From Florence Nightingale's coxcomb charts to Data Feminism, tracing the history of data visualization as an epistemological practice that 'makes the invisible visible,' and arguing why ISVD's statistical dashboards can serve as interventions against structural invisibility.
Citation Network Analysis — The Intellectual Map Drawn by 938 References
A bibliometric analysis of 938 citations across 235 articles on the ISVD website, visualizing author, source, temporal, and disciplinary distribution patterns to reveal the intellectual structure of social design. What citations include — and what they exclude — outlines the contours of ISVD's knowledge project.