Vol. 26 No. 1 (2004)

Research Paper

• On the optimal control force applied to tuned mass dampers for multi-degree-of-freedom systems

  Nguyen Dong Anh, Nguyen Chi Sang

  1-10

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• On the elastoplastic stability problem of the thin round cylindrical shells subjected to complex loading processes with the various kinematic boundary conditions

  Dao Van Dung

  11-22

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• The Poincaré method for an oscillator with quadratic nonlinearity

  Nguyen Van Dinh, Tran Duong Tri

  23-30

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• A numerical model for water-oil flow in naturally fractured reservoirs

  Ha Ngoc Hien, Nguyen Van Diep, Duong Ngoc Hai

  31-38

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• Beam element for large displacement analysis of elasto-plastic frames

  Nguyen Dinh Kien, Do Quoc Quang

  39-54

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• On the existence of periodic solution of some quasilinear differential equations with impulses

  Le Luong Tai

  55-64

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