Riparian ecosystems, through their unique positions in the agricultural landscape, have the potential to mitigate nutrient loading to streams. This study was conducted to gain a better understanding of N cycling in a poorly drained Grass Riparian Zone (GRZ) and adjacent Perennial Ryegrass seed Field (PRF) in the Willamette Valley,...
An experiment was established in 1992 in the central Sierra Nevada Mountains of California to assess the effects of high levels of surface organic residues, severely compacted soil, and shrub competition on the development of mixed conifer plantations. This study was conducted in 1997 to determine if selected combinations of...
Three experiments whose objectives were to investigate cover
crop kill by winter freeze, weed suppression by 'Micah' barley and
other spring cereals, and allelopathic potential of cereal covers
were conducted at the Vegetable Research Farm and in the greenhouse
and growth chamber facilities at OSU in 1989/90. Kill by winter...
School districts across the nation are engaged in an ongoing attempt to bring about
change. Educational researchers strive to initiate change in the classroom with students as
well as the teachers of these students.
The evaluation of a change effort is a key element in any implementation model; as
the...
This study was designed to investigate whether the conservation of substance, weight, continuous quantity, discontinuous quantity, number, area, distance, length, and two-dimensional space are developed in sequence in the acquisition of conservation operations. More specifically, the purposes of the study are two-fold: (1) To assess the sequence and rate of...
The purpose of this study was to determine the competencies necessary to conduct educational research in the
Venezuelan context; to determine if differences exist
among Venezuelan educators in responding to the questionnaire; to determine which clusters of skills and under
standings are relevant to an educational research master's
degree; to...
The dynamical role of mesoscale eddies in the ocean general
circulation is investigated using eddy-resolving quasigeostrophic
(QG) and primitive equation (FE) models which are parametrically
identical. The results of both QG and FE numerical
experiments in mid-latitude, rectangular ocean basins are
systematically intercompared and extensively analyzed in terms
of basic...
The topic of this study is the cultural impact of the computer in a school. "Impact" is 'defined as the cultural consequences of intended and unintended learning that occur when computers are used in the school. The major theoretical orientations of the work include the concepts of manifest and latent...
The focus of this study was to identify persistent
problems in the developmental history of the American
Department of Defense dependents schools in Okinawa, Japan.
The period of time covered was from 1946 through 1978.
The study includes historical descriptions of curriculum
development, obtaining and maintaining school facilities,
and the...
