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Estimating human resource abundance with satellite imagery: When, Where, and Why?

Research Project

Project/Area Number 21K01653
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 07080:Business administration-related
Research InstitutionNagasaki University

Principal Investigator

Utsunomiya Yuzuru  長崎大学, 経済学部, 准教授 (60404315)

Co-Investigator(Kenkyū-buntansha) 福澤 勝彦  長崎大学, 経済学部, 客員研究員 (00208935)
藤田 渉  長崎大学, 経済学部, 客員研究員 (30264196)
Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsタイ / 状態空間モデル / アロメトリー / 労働力人口 / 建物面積 / 人的資源量 / 地理的自己相関 / 衛星画像 / 東南アジア / 色空間 / ベトナム
Outline of Research at the Start

本研究は、衛星画像から得られる植生・都市化指標にて表現する産業構造と産業集積、地理的な近接関係を勘案、官庁統計が集計した都県・省市別労働力勢力から人的資源量を推定するモデルを構築する。対象はタイおよびベトナムである。対象期間は1994年から2020年とする。

本研究は、下記3点を予想する。第一、人的資源量は漸減する。第二、産業構造変容は人的資源量変動に影響を及ぼす。第三、首都や産業集積が進んだ地域とそうではない地域との単純な往復ではなく、より多極的な移動がおこなわれる。

Outline of Final Research Achievements

The purpose of our study is to estimate labor force populations in Thailand using satellite-derived building footprint data. Recognizing the lack or unreliability of official labor statistics in many regions, the study explores building area as a proxy, based on the premise that indoor and outdoor labor activity correlates with built structures. Combining GHSL data from 1995 to 2020 with Thai labor surveys, four statistical models, including spatial models and state-space models, were applied. Results showed the state-space model performed best, with a significant allometric relationship (beta is approximately 0.78) between building area and labor force size. Spatial dependence was low, suggesting building data alone has predictive value.

Academic Significance and Societal Importance of the Research Achievements

本研究は、衛星画像から得た建物面積により労働力人口を推定する新手法を提示し、アロメトリー的関係を確認した。公式統計が乏しい地域において、空間統計・政策立案の両面で有用な知見を提供する。

Report

(5 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2025 2024 2023 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Remarks (1 results)

  • [Int'l Joint Research] カントー大学(ベトナム)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] チェンマイ大学(タイ)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Recruiment and Work Conditions of Factory Workers in Thailand2025

    • Author(s)
      Yuzuru Utsunomiya
    • Journal Title

      Keiei to Keizai

      Volume: 104 Pages: 53-66

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Factory Location and Travel time in Thailand: How Long Can Companies Accept?2024

    • Author(s)
      Yuzuru Utsunomiya
    • Journal Title

      Proceedings of 2024 Academy of International Business Asia Pacific Regional Conference

      Volume: 2024 Pages: 892-897

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estimating the Province-level Number of the Labor Force in Thailand and Whether labor shortage occurs.2023

    • Author(s)
      Yuzuru Utsunomiya
    • Journal Title

      GTBMC Proceedings

      Volume: 2 Pages: 75-86

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Can satellite imagery be used to estimate labor force population? A preliminary study using building footprint shape data and Thai labor force survey results2023

    • Author(s)
      Yuzuru Utsunomiya
    • Journal Title

      2023 AIB Asia Pacific Regional Conference

      Volume: 1 Pages: 927-932

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Remarks] 本研究が使用するRコードおよび成果物

    • URL

      https://github.com/yuzuruu

    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2026-01-16  

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