Volume 70, Issue 4, 2025: Natural Sciences

Articles

• BUILDING A VIETNAMESE MATH CHATBOT BASED ON RAG AND LLM: SYSTEM DESIGN, IMPLEMENTATION AND EXPERIMENTAL EVALUATION

  Pham Van Khanh, Pham Vu Anh Tuan

  43-56

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  DOI: https://doi.org/10.18173/2354-1059.2025-0053

• MICROSATELLITE HYBRID STRUCTURE USING ALUMINUM 7075-T6 AND CFRP FOR IMPROVED LAUNCH PERFORMANCE SURVIVABILITY

  Nguyen Thuy Linh, Nguyen Cong Thai, Le Xuan Huy, To Anh Duc

  57-67

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  DOI: https://doi.org/10.18173/2354-1059.2025-0054

• ON BALANCING NUMBERS BY THE MATRIX METHOD

  Luu Ba Thang, Phan Hoang Lam

  3-10

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  DOI: https://doi.org/10.18173/2354-1059.2025-0049

• ROOTS OF COMPLEX HARMONIC POLYNOMIALS IN ONE VARIABLE

  Dinh Thi Quynh Lien

  11-17

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  DOI: https://doi.org/10.18173/2354-1059.2025-0050

• OPTIMAL ATTENUATION CONTROL OF 2-D POSITIVE ROESSER SYSTEMS WITH BOUNDED DISTURBANCES

  Mai Thi Hong

  18-31

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  DOI: https://doi.org/10.18173/2354-1059.2025-0051

• DIFFERENTIAL VARIATIONAL INEQUALITIES VIA THE EXTENDED LASALLE’S INVARIANCE PRINCIPLE APPROACH

  Hoang Mai Huong, Nguyen Thi Nhung

  32-42

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  DOI: https://doi.org/10.18173/2354-1059.2025-0052