8,739 research outputs found

    OUR SOUTHEAST ASIA POLICY

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    Political Economy,

    The Determination of the Effective Resistance of a Spindle Supporting a Model Airfoil

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    An attempt was made to determine the effect of spindle interference on the lift of the airfoil by measuring moments about the axis parallel to the direction of air flow. The values obtained are of the same degree as the experimental error, and for the present this effect will be neglected. The results obtained using a U.S.A. 15 wing (plotted here) show that the correction is nearly constant from 0 degrees to 10 degrees incidence and that at greater angles its value becomes erratic. At such angles, however, the wing drag is so high that the spindle correction and its attendant errors become relatively small and unimportant

    Arkansas Small-Grain Cultivar Performance Tests 2004-2005

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    Small-grain cultivar performance tests are conducted each year in Arkansas by the Arkansas Agricultural Experiment Station, Department of Crop, Soil and Environmental Sciences. The tests provide information to companies developing cultivars and/or marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for smallgrain producers

    Pendulous crop of turkeys

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    THE condition known as pendulous crop occurs occasionally in a mild form in fowls, but the most commonly reported cases concern the classical symptoms that occur from time to time in turkeys. The condition is also referred to as baggy crop, dropped crop, hanging crop and sour crop, and causes mortality, poor development and emaciation within turkey flocks in some areas

    ADMINISTRATORS\u27 BENEVOLENT AND CORRECTIVE HUMOR AND SUSPENSIONS OF AFRICAN AMERICAN SCHOOL AGE FEMALES

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    African American female students suspension rates are rising and outpacing those of all categories of students, including African American males. This is due, in part, to an administrators over-reliance on zero-tolerance disciplinary policies, as well as a teachers negative perception of African American female students. Soaring rates of suspension contribute to school disengagement, high dropout rates, and a formidable risk of involvement in the school to prison pipeline. In addition to the toll these risks take on human lives, society loses the benefit of human productivity, taxable wages, and stable, thriving communities. As attention to the rising rate of suspension of African American females increases, there are several suggested interventions to reverse the trend. Some researchers offer strategies like Positive Behavior Interventions (PBI) that modify students behavior. Others recommend culturally sensitive, professional learning for teachers. Administrators are encouraged to replace zero-tolerance policies with restorative justice practices. There is, however, a paucity of research that offers humor, specifically, benevolent and corrective humor, as a tool that administrators can apply, instead of handling office referrals with harsh, disciplinary decrees when they exercise their authority to suspend a student.The purpose of this study was to examine whether a principals benevolent and corrective humor score was predictive of the suspension rate of African American female students. Guided by established research in transformational leadership, school suspensions, and Black Girlhood Studies, a newly created, self-administered, Benevolent, and Corrective Humor Scale was distributed to a nationwide population of educational leaders. Benevolent humor is compassionate and for the benefit of the individual. Corrective humor is a moral-based mockery with a sympathetic heart. The blend of these evidence-based approaches was used to address the complex and multi-layered lives of African American females and their heightened risk for suspension. Results indicate a weak, positive relationship between corrective humor question 2 and the percentage of African American female students r (.149), p = .040. Recommendations for educational leaders and future research are provided

    Research on graphite reinforced glass matrix composites

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    A composite that can be used at temperatures up to 875 K with mechanical properties equal or superior to graphite fiber reinforced epoxy composites is presented. The composite system consist of graphite fiber, uniaxially or biaxially, reinforced borosilicate glass. The mechanical and thermal properties of such a graphite fiber reinforced glass composite are described, and the system is shown to offer promise as a high performance structural material. Specific properties that were measured were: a modified borosilicate glass uniaxially reinforced by Hercules HMS graphite fiber has a three-point flexural strength of 1030 MPa, a four-point flexural strength of 964 MPa, an elastic modulus of 199 GPa and a failure strain of 0.0052. The preparation and properties of similar composites with Hercules HTS, Celanese DG-102, Thornel 300 and Thornel Pitch graphite fibers are also described

    Compound compositional data processes

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    Compositional data is non-negative data subject to the unit sum constraint. The logistic normal distribution provides a framework for compositional data when it satisfies sub-compositional coherence in that the inference from a sub- composition should be the same based on the full composition or the sub-composition alone. However, in many cases sub-compositions are not coherent because of additional structure on the compositions, which can be modelled as process(es) inducing change. Sometimes data are collected with a model already well validated and hence with the focus on estimation of the model parameters. Alternatively, sometimes the appropriate model is unknown in advance and it is necessary to use the data to identify a suitable model. In both cases, a hierarchy of possible structure(s) is very helpful. This is evident in the evaluation of, for example, geochemical and household expenditure data. In the case of geochemical data, the structural process might be the stoichiometric constraints induced by the crystal lattice sites, which ensures that amalgamations of some elements are constant in molar terms. The choice of units (weight percent oxide or moles) has an impact on how the data can be modelled and interpreted. For simple igneous systems (e.g. Hawaiian basalt) mineral modes can be calculated from which a valid geochemical interpretation can be obtained. For household expenditure data, the structural process might be how teetotal households have distinct spending patterns on discretionary items from non-teetotal households. Measurement error is an example of another underlying process that reflects how an underlying discrete distribution (e.g. for the number of molecules in a sample) is converted using a linear calibration into a non-negative measurement, where measurements below the stated detection limit are reported as zero. Compositional perturbation involves additive errors on the log-ratio space and is the process that does show sub-compositional coherence. The mixing process involves the combination of compositions into a new composition, such as minerals combining to form a rock, where there may be considerable knowledge about the set of possible mixing processes. Finally, recording error may affect the composition, such as recording the components to a specified number of decimal digits, implying interval censoring, which implies error is close to uniform on the simplex.postprin
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