A project funded by the Southern California Edison (SCE) Company, Research
Center of Irwindale, California, has supported the development of a performance and
parameter prediction software program for use during the refurbishment of large
synchronous machines, turbine generators, and synchronous condensers. The computer
program was developed for SCE to allow...
The Brush less Doubly-Fed Machine (BDFM) has the potential to be a more cost effective replacement for conventional induction or synchronous machine drives. The BDFM has two stator windings: a power winding and a control winding. An electronic power converter of variable voltage and frequency is connected to the control...
Use of conventional induction machines (IM) in adjustable
speed drives (ASD) has increased in recent years. Electronic
power processing has facilitated this increased use. The IM
is an inexpensive and robust machine, but when used as part of
an ASD, the cost of the system increases due to the inclusion...
High rates and high costs of adolescent pregnancy and school dropout have resulted in the development of many prevention programs; however, little is known about the long-range effectiveness of efforts. Empirical research is needed to document behavioral outcomes over extended periods of time. I interviewed eight young white women who...
A foundation for the control of tumors is presented,
based upon the formulation of a realistic, knowledge-based
mathematical model of the interaction between tumor cells
and the immune system. The parametric control variables
relevant to the latest experimental data, e.g., the sigmoidal
dose-response relationship and Michaelis-Menten dynamics,
are also considered....
The U.S. wood window and door industry has experienced much growth
for the past decade. However, to date, little information on factors that could
affect marketing strategies exists. This research represents an initial step for
providing this information.
A mail survey of U.S. wood window and door manufacturers was used...
The purpose of this study was to determine the
effects of a six-week career planning dropout prevention
program on the self-concepts and academic achievement of
at-risk middle school students in an inner-city public
school environment. The research population consisted of
1,434 students (grades seven, eight and nine) attending an
inner...
The purpose of this study was to determine differences in
patterns and underlying practices between fathers of gifted and
fathers of non-gifted children.
The study included 10 fathers of gifted (FG) children and 10
fathers of non-gifted (FN) children. The children were
preschoolers, ages 5-6 years old. Giftedness of the...