The vertical reference system being considered utilizes a two-degree-of-freedom gyroscope configured as a vertical gyro. Each
gimbal erection circuit forms a second-order feedback control system.
Gyros are susceptable to a number of error sources. In view
of the closed loop application being considered, all error sources are
of negligible consequence...
The present work is an attempt to correlate information collected in the northern part of Chile with the anchoveta distribution and its fluctuation. This information was collected over a three year period (November 1967 to November 1970) by the Instituto de Fomento Pesquero, Chile (IFOP). The first and second part...
This analysis of Colombia's System of National Park Reservations
accomplishes four objectives: 1) The historical development of national
parks in Colombia was described; 2) The status, as of August,
1974, of the areas administered by the Colombian Renewable Natural
Resources Development Institute (INDERENA) was summarized; 3) An
analysis of major...