A model of a squirrel cage induction machine, d.c.-
link power supply and centrifugal pump is developed and
used in the design and evaluation of a perturbation feedback
control system for a sewage pumping station. A comparison
of the simulation model of the induction machine
and a laboratory machine to...
The genus Tiaja Oman consists of eight known species of flightless
leafhoppers of the subfamily Megophthalminae found along the
western coast of North America between British Columbia and
northern Mexico. Species occurring from the San Francisco Bay
area northward are restricted to a narrow coastal zone within 1 km of...
An experimental study was made of the average and turbulent
wind characteristics of the flow over a model of a coastal headland.
The scale of the model was 300:1, corresponding to a prototype size
of 500 m.
The data for validation of the model study was obtained from
instruments mounted...
This study involved three separate experiments employing a total
of 29 horses and 4 rabbits. The purpose of these studies was to investigate
the use of various quantities and forms of ryegrass straw in horse
rations, and to determine the use of whole corn plant pellets as an alternative
roughage...
Purpose of the Study: The purpose of this investigation was to measure some of the effects of an elementary science program, the Science Curriculum Improvement Study (SCIS) on science achievement of certain sixth grade students. Important to the problem was how the SCIS students compared with students exposed to a...