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Recently, a steam turbine blade is becoming larger and more flexible, therefore it in necessary to calculate natural frequencies of long, cylindrical twisted turbine blade for avoiding resonance of rotation. In this paper, the vibration characterics of free-standing blade are experimently investigated and calculated. A mathod of analysis is transfer matrix mathod. Furthermore, their extension makes possible the evaluation of certain elastic constraints the lashing wire and shroud band. The calculated values do agree with the test values but with a small errors.
Korea has often been quoted as a model country of economic development. In recent years, however, critical views have also been built up on the development processes of the Korean economy. And, in fact, many of the critical evaluations are made based on the Marxian or Neo-Marxian development theory. This study is to propose a new line of analytic framework for the study of economic development processes. The proposed model is based on four general rules of economic development. One of them suggests that economic development precesses should be evaluated in terms of the standard of human rights and economic welfare. And the idea of single line of economic development processes is refuted on the basis of the Weberian approach. In the later part of the paper, the proposed theory of economic development is applied to the Korean development experiences. This study finds that the current economic problems in Korea are originated not only from her distorted history but also from her economic development policies adopted. It also sees that the recent transition in the Korean economy produces an optimism but with some reservations. For the final assessment of the Korean economic development process, however, we should wait until when Korea can successfully go through structural changes as desired.