4,639 research outputs found
SPATIAL AND TEMPORAL WATER ALLOCATION IN THE KISSIMMEE RIVER BASIN
Resource /Energy Economics and Policy,
The Race, Social Class, and Place-Based Gap in Rural Turnaround Policy: A Policy Brief
Abstract: For teachers, leaders, and policymakers To understand the factors that contribute to the successful implementation of rural school turnaround, there is a need to understand how turnaround leadership implements school improvement in different types of communities of color (Wright, 2019). Studies examining the implications of school turnaround in minoritized educational contexts have solely examined urban school contexts to exclude rural contexts (Mette & Stanoch, 2018). Rural schools of color undergoing turnaround face the fundamental unique educational challenges of rural schools and the education debt that has accumulated over time for people of color (Ladson-Billings, 2006). There is a greater need to understand how school turnaround is enacted and embodied by rural Title I school communities of color. Black scholars studying rural education are conceptualizing the education debt for rural people of color to build the transformational capacity of the education debt present in schooling in rural communities of color (Harris, 2021; Grant-Panting, 2021; Nichols, 2021; Nino & Perez-Diaz., 2021). The implications of the current trends in rural education research suggest that the sociopolitical contingencies that intersect with rural experience must be studied. In particular, future research could collect oral histories of rural school communities of color to understand their schooling experiences to address issues like resources, teacher quality, and educational debt
Crystal structure analysis of intermetallic compounds
Study concerns crystal structures and lattice parameters for a number of new intermetallic compounds. Crystal structure data have been collected on equiatomic compounds, formed between an element of the Sc, Ti, V, or Cr group and an element of the Co or Ni group. The data, obtained by conventional methods, are presented in an easily usable tabular form
IUSThrust Vector Control (TVC) servo system
The IUS TVC SERVO SYSTEM which consists of four electrically redundant electromechanical actuators, four potentiometer assemblies, and two controllers to provide movable nozzle control on both IUS solid rocket motors is developed. An overview of the more severe IUS TVC servo system design requirements, the system and component designs, and test data acquired on a preliminary development unit is presented. Attention is focused on the unique methods of sensing movable nozzle position and providing for redundant position locks
Shear bands and cracking of metallic glass plates in bending
The thickness dependence of yielding and fracture of metallic glass plates subjected to bending is considered in terms of the shear band processes responsible for these properties. We argue that the shear band spacing (and length) scales with the thickness of the plate because of strain relaxation in the vicinity of the shear band at the surface. This is consistent with recent measurements of shear band spacing versus sample size. We also argue that the shear displacements in the shear band scale with the shear band length and plate thickness, thus causing cracks to be initiated in thicker plates at smaller bending strains. This leads to fracture bending strains that decrease markedly with increasing plate thickness, consistent with recent experiments. These results suggest that amorphous metals in the form of foams might have superior ductility and toughness
Report on the Joint Eglin Acoustic Week III
A series of three flight tests have been conducted at Eglin Air Force Base located in the Florida panhandle. The first was the Acoustics Week flight test conducted in September 2003. The second was the NASA Heavy Lift Rotorcraft Acoustic Flight Test conducted in October-November 2005. The most recent was the Eglin Acoustic Week III test conducted in August-September 2007. This series of tests have acquired acoustic data for a number of rotary and fixed wing aircraft that are used to generate noise semi-spheres used in predicting the acoustic footprint for prescribed flight operations. This extensive database can be used to determine the impact of flight operations on communities around a terminal area. Another valuable use of the semi-spheres is determining the long-range propagation of noise for civilian and military purposes. This paper will describe the third in this series of tests
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