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• Article 2026

  Portfolio optimization using cryptocurrency

  Raka Arjunaldi Pramana Putra, Mychelia Champaca

  19 Jan 2026 · DOI: 10.55942/pssj.v6i1.620

  233 Views

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  cryptocurrency portfolio optimization markowitz model mean variance optimization sharpe ratio
• Article 2026

  K-Pop fan solidarity in Indonesian social discourse: Activism and power resistance

  Nurul Laili Nadhifah, Manneke Budiman, Shuri Mariasih Gietty Tambunan

  15 Jan 2026 · DOI: 10.55942/pssj.v6i1.1101

  215 Views

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  fan activism Indonesian K-pop fans intimacy digital ethnography renegotiating identities transnational proximity
• Article

  Do profitability and liquidity drive market valuations? A study based on Tobin Q in LQ45 Firms (Q1 2021 – Q3 2024)

  Aditya Wardana, Rolan Mart Sasongko, Hafidh Rifky Adiyatna, Ryan Setya Budi, Ida Ayu Fatmayuni

  18 Sep 2025 · DOI: 10.55942/pssj.v5i9.587

  761 Views

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  Tobin’s Q analysis financial performance corporate valuation firm value
• Article

  The role of NGOs in empowering Londo Coffee Farmers in Sirukam Village, Solok Regency

  Dina Nirmala, Syamsir Syamsir

  24 Oct 2025 · DOI: 10.55942/pssj.v5i10.877

  356 Views

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  Non-Governmental Organizations Farmer Empowerment Social Forestry KUPS Londo Coffee Sustainable Agriculture Nagari Sirukam
• Article

  The phenomenon of inner marriage from the perspective of national marriage law and protection of women

  Muh. Akbar Fhad Syahril, Nurhaedah Hasan

  14 Jul 2025 · DOI: 10.55942/pssj.v5i7.403

  504 Views

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  Marry Inner Law Marriage Protection Woman Right Child Recording Marriage