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2018 Fiscal Year Annual Research Report

Water resources portfolio for farmlands along the Dead Sea

Research Project

Project/Area Number 26257415
Research InstitutionKyoto University

Principal Investigator

宇波 耕一  京都大学, 農学研究科, 准教授 (10283649)

Project Period (FY) 2014-04-01 – 2019-03-31
Keywords水資源 / ポートフォリオ問題 / 乾燥地農業 / 関数解析 / 死海 / 国際研究者交流 / 国際情報交換 / ヨルダン
Outline of Annual Research Achievements

2014年度から2017年度の4年間をかけ、底部取水型取水工、貯水池、除塩プラント、受益地圃場からなる灌漑スキームのプロトタイプを、死海リサン半島に位置するヨルダン国ムタ大学試験農場に完成させた。これらの諸施設には、気象・水文自動観測装置、除塩プラントの熱力学系観測装置、土壌物理と作物成長の観測システムなどを整備して、データ収集を行った。2017年度からは、受益地圃場において、観測装置などから得られる情報をフィードバックすることによって点滴灌漑水路網を合理的に制御し、耐塩性かつ高付加価値のナツメヤシを栽培してきた。学術上の主な実績としては、除塩プラントの熱力学系モデルを構築し、パラメータ推定やモデル検証を実施し、国際学術誌に論文が受理された。また、除塩プラントから得られる淡水を点滴灌漑水路系に供給する貯留タンクの最適運用戦略に関しては、離散時間動的計画法の枠組みにおいて数理解析を行い、国際学術誌に論文が掲載された。その内容は、報酬関数の連続性に関して異なった2ケースを考え、価値関数の正則性を論じた上で時間周期解の一意存在性を検討し、数値計算の結果から誤差評価を行うものとなっている。さらに、本研究の成果は中東地域において学術的、実際的に極めて大きな意義を有することから、トルコ共和国コンヤ市で開催されたIGCC、ヨルダン王国ムタ大学で開催されたESACの両国際会議に、科学委員として参加し、招待講演を行った。また、九州大学IMI共同利用として企画した研究集会が採択され、主に時系列データのモデル化と解析について国際的、学際的な討議を行った。とくに、ナツメヤシの生育を目的とした塩水と淡水の最適ポートフォリオ、灌漑用貯水池における洪水制御などについて、学術的に顕著な進展があった。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

  • Research Products

    (29 results)

All 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 8 results,  Invited: 2 results) Book (4 results) Funded Workshop (1 results)

  • [Int'l Joint Research] RARS Jamalpur, BARI(バングラデシュ)

    • Country Name
      BANGLADESH
    • Counterpart Institution
      RARS Jamalpur, BARI
  • [Int'l Joint Research] Mutah University(ヨルダン)

    • Country Name
      JORDAN
    • Counterpart Institution
      Mutah University
  • [Int'l Joint Research] University of Mosul(イラク)

    • Country Name
      IRAQ
    • Counterpart Institution
      University of Mosul
  • [Int'l Joint Research] Universiti Putra Malaysia(マレーシア)

    • Country Name
      MALAYSIA
    • Counterpart Institution
      Universiti Putra Malaysia
  • [Int'l Joint Research] University of Delhi(インド)

    • Country Name
      INDIA
    • Counterpart Institution
      University of Delhi
  • [Journal Article] Prototype and model of solar driven desalination plant in arid environment2019

    • Author(s)
      Unami K, Mohawesh O, Fujihara M
    • Journal Title

      Thermal Science

      Volume: - Pages: 97-97

    • DOI

      https://doi.org/10.2298/TSCI180604097U

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Time periodic optimal policy for operation of a water storage tank using the dynamic programming approach2019

    • Author(s)
      Unami K, Mohawesh O, Fadhil RM
    • Journal Title

      Applied Mathematics and Computation

      Volume: 353 Pages: 418-431

    • DOI

      https://doi.org/10.1016/j.amc.2019.02.005

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] マルコフ連鎖による連続干天日数のモデル化2019

    • Author(s)
      宇波耕一
    • Journal Title

      土地改良の測量と設計

      Volume: 88 Pages: 22-27

  • [Journal Article] A unique value function for an optimal control problem of irrigation water intake from a reservoir harvesting flash floods2018

    • Author(s)
      Unami K, Mohawesh O
    • Journal Title

      Stochastic Environmental Research and Risk Assessment

      Volume: 32 Pages: 3169-3182

    • DOI

      10.1007/s00477-018-1527-z

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Holistic water quality dynamics in rural artificial shallow water bodies2018

    • Author(s)
      Alam AHMB, Unami K, Fujihara M
    • Journal Title

      Journal of Environmental Management

      Volume: 223 Pages: 676-684

    • DOI

      10.1016/j.jenvman.2018.06.076

    • Peer Reviewed
  • [Journal Article] A singular stochastic control model for sustainable population management of the fish-eating waterfowl Phalacrocorax carbo2018

    • Author(s)
      Yaegashi Y, Yoshioka H, Unami K, Fujihara Masayuki
    • Journal Title

      Journal of Environmental Management

      Volume: 219 Pages: 18-27

    • DOI

      10.1016/j.jenvman.2018.04.099

    • Peer Reviewed
  • [Journal Article] Numerical computation of robust optimal harvesting policy in a fish pond under uncertainty2018

    • Author(s)
      Ndede EO, Unami K, Fujihara M
    • Journal Title

      Journal of Rainwater Catchment Systems

      Volume: 24 Pages: 33-36

    • Peer Reviewed
  • [Presentation] A discrete time dynamic programming problem for a plant growth model with controlled parameters2018

    • Author(s)
      Unami K
    • Organizer
      農業農村工学会応用水理研究部会
  • [Presentation] On a hyperbolic-elliptic system having discontinuous self-similar solutions2018

    • Author(s)
      Yoshioka H
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] Stochastic optimal impulse control policy for management of seasonal fish-eating bird population dynamics2018

    • Author(s)
      Yaegashi Y
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] Multi-state Markov chains applied to drought management in rainfed agriculture2018

    • Author(s)
      Unami K
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] Optimal control of an irrigation tank during a flood event2018

    • Author(s)
      Fujikura Y
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] 豪雨による溜池決壊を想定した決定論的動的計画問題2018

    • Author(s)
      藤倉大和
    • Organizer
      第26回日本雨水資源化システム学会
  • [Presentation] 塩性乾燥地域における灌漑ナツメヤシ成長の一般化加法モデル2018

    • Author(s)
      新井芽丹
    • Organizer
      第26回日本雨水資源化システム学会
  • [Presentation] A time-dependent stochastic optimal impulse control model for management of fish-eating bird2018

    • Author(s)
      Yaegashi Y
    • Organizer
      第26回日本雨水資源化システム学会
  • [Presentation] Deterministic dynamic programming for operation of micro irrigation scheme2018

    • Author(s)
      Unami K
    • Organizer
      The Eighth Scientific Agricultural Conference ESAC-2018
    • Int'l Joint Research / Invited
  • [Presentation] Markovian properties and distribution of daily rainfall in northern Iraq2018

    • Author(s)
      Fadhil RM
    • Organizer
      The Eighth Scientific Agricultural Conference ESAC-2018
    • Int'l Joint Research
  • [Presentation] Convergence to steady states of open channel flows in a paddy irrigation canal system with ponds2018

    • Author(s)
      Mean S
    • Organizer
      PAWEES & INWEPF International Conference 2018
    • Int'l Joint Research
  • [Presentation] A prototype of micro irrigation scheme in the Jordan Rift Valley and its mathematical modelling2018

    • Author(s)
      Unami K
    • Organizer
      International Green Capitals Congress
    • Int'l Joint Research / Invited
  • [Book] Modelling and Analysis of Time Series Data in Math-Agro Sciences, The Mathematics for Industry Research2019

    • Author(s)
      Unami K, Chono C, Yoshioka H, Tagami D, Shirai T
    • Total Pages
      305
    • Publisher
      Institute of Mathematics for Industry, Kyushu University
  • [Book] New Trends in Emerging Complex Real Life Problems2018

    • Author(s)
      Yaegashi U, Yoshioka H, Unami K, Fujihara M
    • Total Pages
      471
    • Publisher
      Springer
  • [Book] Environmental Pollution, Water Science and Technology Library2018

    • Author(s)
      Unami K, Mabaya G, Alam AHMB, Fujihara M
    • Total Pages
      571
    • Publisher
      Springer Singapore
  • [Book] International Green Capitals Congress2018

    • Author(s)
      Unami K, Mohawesh O
    • Total Pages
      240
    • Publisher
      Konya Metropolitan Municipality
    • ISBN
      978-973-6299-49-4
  • [Funded Workshop] Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University2018

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Published: 2019-12-27  

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