5,614 research outputs found
An Empirically-Grounded Comparison of the Johnson System versus the Beta as Crop Yield Distribution Models
No full textPrevious research established that the expanded Johnson system can accommodate any theoretically possible mean-variance-skewness-kurtosis combination. Therefore, it has been hypothesized that this system can provide for a reasonably accurate modeling approximation of any probability distribution that might be encountered in practice. In order to test that hypothesis, this manuscript develops a more flexible expanded form of the Beta distribution which, in its original form, has been widely used to model and simulate crop yields for risk analysis. Empirically grounded evaluations suggest that the Johnson system can model a variety of typical yield data-generating processes that are based on the Beta distribution much more precisely than the Beta can model representative crop yield data simulated from the Johnson system. The accuracy with which the Johnson system approximates the Beta supports the previously stated hypothesis.Crop Production/Industries,
The marriage record of Johnson, W. J. and Balo, Annie
No full textMarriage license for W.J. Johnson and Annie Balo. A.P. Brockway was the Notary Public
Marriage record of Johnson, Benjamin F. and Blount, Ruth
No full textMarriage license for Benjamin F. Johnson and Ruth Blount. A.P. Brockway was the Notary Public
[oval bust portrait of James C. Johnson].
No full textPhoto Div C.3 .Woods family.11. Oval bust portrait of James C. Johnson.; Handwritten on recto, "Your friend, Jas C. Johnson."; Individual studio portraits of men and women. Subjects include: J.C. McCabe; James C. Johnson; Wesley Green (Canonsburg); John W. McGuier.; Photographers include: Edgar Decker (Cleveland); Parsons (Wheeling, W. Va.); A.P. Hall (Wheeling, W. Va.); J.S. Young (Washington, Pa.); Partridge's Gallery (Wheeling, W. Va.); Robinson (Wheeling, W. Va.); Howell (N.Y.); Baird & Twiford (Burlington, Iowa); Brown & Higgins (Wheeling, W. Va.)
Validation of the International Reading Speed Texts in a Canadian Sample
No full textData associated with: Morrice, E., Hughes, J., Stark, Z., Wittich, W., & Johnson, A.P. (in review) Validation of the International Reading Speed Texts in a Canadian Sample
STRUCTURE OF THE ART-SPACE IN THE STORY "I" BY A.P. POTEMKIN
No full textThe author performs the analysis of the art space structure in A.P. Potemkin's story "I". Several interrelated spatial models are allocated and described: household space, natural space, social space, psychological space, transpersonal space
Validation of the International Reading Speed Texts in a Canadian Sample
No full textData associated with: Morrice, E., Hughes, J., Stark, Z., Wittich, W., & Johnson, A.P. (in review) Validation of the International Reading Speed Texts in a Canadian Sample
Pressure drop and turbulence statistics in transpired pipe flow
No full textMeasurements of turbulent flow in a horizontal pipe subjected to wall transpiration are presented. Results include data on global flow rates and pressure drop, and local mean and fluctuating velocity profiles. Two distinct flow transpiration rates are studied, = / = 0.0005 and 0.001. The effects of flow transpiration on the friction-coefficient are compared with theoretical predictions. The theory furnishes predictions accurate to 3\%
Fully Turbulent Mean Velocity Profile for Purely Viscous non-Newtonian Fluids
No full textThe characteristic near wall behavior of turbulent flow of purely-viscous non-Newtonian fluids is discussed for both power-law (P.-L.) and Herschel-Bulkley (H.-B.) rheological models. A proper scaling is presented for H.-B. fluids to establish an analogy with power-law fluids with same flow index. To provide reference data for turbulent flow of non-Newtonian fluids, DNS simulations of power-law fluids are conducted in a rectangular channel for a large range of power-law indices ( = 0.5, 0.69, 0.75, 0.9, 1, 1.2). The DNS data show that the mean velocity profile in the viscous and logarithmic layers follow expressions of the form and respectively, where shows a logarithmic dependency on the flow index.Comparison with some experimental data shows the above formulation to be valid for Reynolds numbers (based on shear velocity) as high as 1000
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