Cognitive apprenticeship : teaching the craft of reading, writing, and mathtematics

Includes bibliographical references (p. 25-27)This research was supported by the National Institute of Education under Contract no. US-NIE-C-400-81-0030 and the Office of Naval Research under Contract No. N00014-85-C-002

A Review of the Open Educational Resources (OER) Movement: Achievements, Challenges, and New Opportunities

Examines the state of the foundation's efforts to improve educational opportunities worldwide through universal access to and use of high-quality academic content

Anxiety and Safety: Two Studies ol the Kentucky Coal Miner

Two reports offer insight into the personality and working conditions of the Kentucky Coal miner. Dr. George E. Dickinson\u27s survey measures death anxiety among miners; Dr. Stuart S. Sprague\u27s correlated report tracks the often volatile effort to legislate and enforce safety regulations. Both reports arrive at one perhaps startling conclusion: many miners agree - and are somewhat supported by statistics - that they themselves are most frequently to blame for accidents

Microclimate and activity of the lizard Angolosaurus skoogi on a dune slipface

The lizard Angolosaurus skoogi inhabits the surface and subsurface environments of sand dunes of the northern Namib Desert. We have related posture, locomotion, and other aspects of surface activity to the microclimate prevailing above and below the surface. Globe temperature was the best microclimatic correlate of surface activity. From our analysis, we concluded that surface thermoregulatory behaviour of A. skoogi is facultative, and aimed at maintaining a body temperature compatible with foraging and other obligatory surface activities

Workshop on computer applications in water management: proceedings of the 1995 workshop

Compiled and edited by L. Ahuja, J. Leppert, K. Rojas, E. Seely.Also published as: Great Plains Agricultural Council publication, no. 154.Includes bibliographical references.Presented at the Workshop on computer applications in water management: proceedings of the 1995 workshop held on May 23-25, 1995 at Colorado State University in Fort Collins, Colorado

Impact of artificial flooding on farm profits and streamflow in Echo Meadows, Oregon

Competition for water both from within the irrigation community and from outside interests has been a major source of conflict in the West. In the Umatilla Basin of central Oregon, Umatilla River water is diverted to irrigate a variety of crops, while instream flows have value in salmonid production. Historically, the Umatilla Basin supported runs of fall and spring Chinook as well as steelhead and resident trout but native fish populations have largely disappeared from the river system. The decline in salmonid production has been blamed, in part, on a combination of low streamflow and high water temperatures in the summer months resulting from diversions by agricultural users. This thesis examines a proposed project designed to increase streamflow in the lower Umatilla River during the summer months by artificially flooding selected agricultural land in the Echo Meadows area of the basin during the late winter. The thesis also examines alternative options to increase streamflow. Estimates of the economic and hydrologic impacts of winter water spreading and other options provides information to policy-makers and irrigators on the costs and benefits associated with various project management alternatives. Using information on agricultural production and water supply in the lower Umatilla Basin, this thesis constructs a mathematical optimization model of representative farms in the area. In addition, because return flows represent an important component of streamflow in summer months, water applications determined by the representative farm models are used to assess the impacts of the artificial flooding project on streamflow in the Umatilla River below the study area. The results of the representative farm models indicate that the artificial flooding project increases farm profits by $37,620 and streamflow by 18.58 cubic feet per second. Alternative techniques to obtain similar increases in streamflow are more costly and would have negative effects on the agricultural community