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Yun Hee-Yun
- Journal of the Korean Society for Library and Information Science
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- v.22
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- pp.397-441
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- 1992
This study aims to present an improved model of the organizational structure for national university libraries in Korea. The results of this study are as follows : 1. A small scale library serving to a population of less than 15,000 should be organized with a staff of 50-60 persons, 3 departments and 10-13 sections (3 departments and 9-12 sections of central library + 1 section of branch library) 2. A medium scale library serving to 15,000-25,000 population should be organized with a staff of 80-120 persons, an associate librarian, 5-6 departments and 18-21 sections (4-5 departments and 15-18 sections of central library + 1 department and 3 sections of branch library) 3. A large scale library serving to a population of over 25,000 should be organized with a staff of 140-170 persons, an associate librarian, 7-8 departments and 25-28 sections (5-6 department and 20-21 sections of central library + 2 departments and 6 sections of branch libraries)
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Chong, Nak-Young;Choi, Donghoon;Suh, Il-Hong
- 제어로봇시스템학회:학술대회논문집
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- 1992.10b
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- pp.370-375
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- 1992
An algorithm for the notion planning of the robotic hand is proposed to generate finite displacements and changes in orientation of objects by considering sliding effects between the fingertips and the object at contact points. Specifically, an optimization problem is firstly solved to find minimum contact forces and minimum joint velocities to impart a desired motion to the object at each time step. Then the instantaneous relative velocity at the contact point is found by determining velocities of the fingertip and the velocity of the object at the contact point. Finally time derivatives of the surface variables and contact angle of the fingertip and the object at the present time step is computed using the Montana's contact equation to find the contact parameters of the fingertip and the object at the next time step. To show the validity of the proposed algorithm, a numerical example is illustrated by employing the robotic hand manipulating a sphere with three fingers each of which has four joints.
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