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이기수 한국경영법률학회 2008 經營法律 Vol.18 No.2
The corporate governance is also in korea hot issue. The discussion about it is not over. We should try to find out desirable corporate governance in korea. The korean government is preparing for reform of korean commercial code. The executive officer system will be adopted. Japan has enacted new corporate law in 2005. In the case of governing bodies of companies in new japanese corporate law, it is possible to compose of no less than twenty types of bodies to make it various. In this article, the author has tried to point out the special character of japanese corporate governance, especially that of new corporate law 2005. On the other hand, the author analysed the corporate internal control. The author gives some suggestions about the desirable corporate governance in korea.
접촉면에서 모든 적합조건을 만족시키는 동적인 접촉현상의 해법
이기수 대한기계학회 1995 대한기계학회논문집 Vol.19 No.5
For the numerical solution of frictional dynamic contact problems, correct contact points and displacements are determined by iteratively reducing the displacement error vector monotonically toward zero And spurious oscillations are prevented from the solution by enforcing the velocity and acceleration compatibilities of the contact points with the corresponding error vectors. Numerical simulations are conducted to demonstrate the accuracy of the solution and the necessity of the velocity and acceleration compatibilities on the contact surface.
이기수,금영탁 대한기계학회 1992 대한기계학회논문집 Vol.16 No.12
To obtain the convenient solution of the multibody dynamic systems composed of flexible beams, linear finite element technique is adopted and the nodal coordinates are interpolated in the global inertia frame. Mass matrix becomes an extremely simple constant matrix and the force vector also becomes extremely simple because Coriolis acceleration and centrifugal force are not required. And the elastic force is also simply computed from the moving frame attached to the material. To solve the global differential algebraic euation. an ODE technique is adopted after Lagrange multiplier is computed by the accelerated iterative technique, and the time demanding procedures such as Newton-Raphson iterations and decomposition of the big matrix are not required. The accuracy of the present solution is checked by a well-known example problem.