Effects of current velocity, irradiance, and grazing on the
biomass, taxonomic structure, physiognomy, and chemical composition
of lotic algal assemblages were investigated. Four experiments,
lasting 32 to 75 days, were conducted in laboratory streams to
determine how these factors affect algal assemblages singly, and in
concert with each other.
Regardless...
Reactor refueling is a computationally intensive
problem solving process that requires automation since
significant resources are expended upon the search for
an optimal core loading. Without imposing some
constraints upon the configurations investigated, an
extremely large number of prototype loadings may be
generated without discovery of an improved loading. As...
A branch mortality dating technique and whorl
sampling strategy were implemented to model five-year
crown recession from data collected on temporary
plots. Twenty-eight Douglas-fir from two levels-of-growing-
stock studies in Oregon and Washington were
first dissected to validate the proposed dating
technique and assess alternative sampling strategies.
Branch mortalities in...
Statistics indicate that the number of dual-career couples, and
thus dual-career women, has continued to increase (Holahan & Gilbert,
1979a; Jump, 1986; Maples, 1981; Sekaran, 1983). Very little is known,
however, about how these women make their career-related decisions
(Morgan & Hock, 1984). The major purpose of the present study...
Managing children with problem behaviors is a challenging task
for new teachers. Preservice training offers one means of better
preparing new teachers to meet this challenge. Before suggesting
alterations in preservice training programs, it is necessary to
understand how preservice teachers perceive and respond to problem
behaviors. Of particular interest...
This study had two major purposes. The first focused upon understanding the development of aspects of ethnic development among 4- and 7-year-old Chinese-American boys and girls from immigrant and non-immigrant families. The second focused upon understanding the contribution of selected parental (fathers' and mothers') characteristics on aspects of children's ethnic...
This paper proposes that human asymmetrical hemispheric
function originated because of the cognitive requirements of
tool-making.
The human brain can be considered to be a product of two
evolutionary episodes. The first episode was shared with
other mammals and resulted in a brain composed of a reptilian
complex, paleomammalian and...