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• Article 2026

  Stock market reaction to U.S. tariff announcements: Evidence from ASEAN

  Alvin Rezki Kurniawan, Titi Dewi Warninda, Murdiyah Hayati

  01 Apr 2026 · DOI: 10.55942/pssj.v6i4.1453

  84 Views

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  abnormal return ASEAN stock indeks efficient market hypothesis event study tariff announcement
• Article 2026

  Examining the planning model and rationality values of Singapore’s state planning: Is it effective and successful?

  Muhamad Khoirul Anam, Muhammad Rifqi Al Faizi

  06 Apr 2026 · DOI: 10.55942/pssj.v6i4.1178

  88 Views

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  national planning rationality value Singapore SITAR synoptic planning