101,264 research outputs found
Soils of western Wright Valley, Antarctica
No full textWestern Wright Valley, from Wright Upper Glacier to the western end of the Dais, can be divided into three broad geomorphic regions: the elevated Labyrinth, the narrow Dais which is connected to the Labyrinth, and the North and South forks which are bifurcated by the Dais. Soil associations of Typic Haplorthels/Haploturbels with ice-cemented permafrost at 70 cm. They are developed in situ in strongly weathered drift with very low surface boulder frequency and occur on the upper erosion surface of the Labyrinth and on the Dais. Typic Anhyorthels also occur at lower elevation on sinuous and patchy Wright Upper III drift within the forks. Salic Aquorthels exist only in the South Fork marginal to Don Juan Pond, whereas Salic Haplorthels occur in low areas of both South and North forks where any water table is> 50 cm. Most soils within the study area have an alkaline pH dominated by Na+ and Cl- ions. The low salt accumulation within Haplorthels/Haploturbels may be due to limited depth of soil development and possibly leaching
Measurement of the mass difference m(D-s(+))-m(D+) at CDF II
No full textWe present a measurement of the mass difference m(D-s(+))-m(D+), where both the D-s(+) and D+ are reconstructed in the phipi(+) decay channel. This measurement uses 11.6 pb(-1) of data collected by CDF II using the new displaced-track trigger. The mass difference is found to be m(D-s(+))-m(D+)=99.41+/-0.38(stat)+/-0.21(syst) MeV/c(2)
Employees of the Dayton-Wright Airplane Company stand on the wings of the Dayton-Wright RB-1
No full textThe photograph shows employees of the Dayton-Wright Airplane Company standing on the wings of the Dayton-Wright RB-1 to show the strength of the aircraft, circa 1920. The RB-1 was one of the first airplanes made with a solid wing instead of the usual fabric covered wooden skeleton wings. The men standing on the wings are listed from left to right: Howard M. Rinehart, James M. Jacobs, J. P. Henry, Harvey D. Geyer, Bernard L. Whelan, Wallace S. Whittaker, Thomas Midgley Jr., J. H. Hunt, Milton Clement Baumann (chief designer), Harold E. Talbott Jr., G. M. Williams, and Charles F. Kettering. The RB-1 was also known as the Dayton-Wright Racer.https://corescholar.libraries.wright.edu/special_ms152_photographs/1216/thumbnail.jp
Group photograph of the Dayton-Wright Airplane Company Administration
No full textThe photograph shows the administration of the Dayton-Wright Airplane Company, circa 1918. In the front row seated from left to right is: N. S. Clunet, James M. Jacobs, H. S. Taylor, Orville Wright, James M. Schoonmaker, F. O. Clements, Harold E. Talbott, Howard M. Rinehart, Bernard Whelan, L. C. Luneke, and R. V. Hutchinson. In the back row standing from left to right is: L. Mougey, unidentified, unidentified, Harvey D. Geyer, unidentified, unidentified, C. P. Nellis, Elwood Herbig, Milton Clement Baumann, J. E. Butz, and W. S. Whittaker.https://corescholar.libraries.wright.edu/special_ms152_photographs/1036/thumbnail.jp
The Persistence of the R.A. Fisher-Sewall Wright Controversy
No full textThis paper considers recent heated debates led by Jerry A. Coyne and Michael J. Wade on issues stemming from the 1929-1962 R. A. Fisher-Sewall Wright controversy in population genetics. William B. Provine once remarked that the Fisher-Wright controversy is central, fundamental, and very influential. Indeed, it is also persistent. The argumentative structure of the recent (1997-2000) debates is analyzed with the aim of eliminating a logical conflict in them, viz., that the two “sides” in the debates have different aims and that, as such, they are talking past each other. Given a philosophical analysis of the argumentative structure of the debates, suggestions supportive of Wade’s work on the debate are made that are aimed, modestly, at putting the persistent Fisher-Wright controversy on the course to resolution
Aesthetic Judgements of Abstract Dynamic Configurations
No full textTo date, aesthetic preference for abstract patterns has mainly been examined in the relation to static stimuli. However, dynamic art forms (e.g., motion pictures, kinetic art) are arguably more powerful in producing emotional responses. To start the exploration of aesthetic preferences for dynamic stimuli (stripped of meaning and context) we conducted three experiments. Symmetrical or random configurations were created. Each line element had a local rotation, and the whole configuration also underwent a global transformation (horizontal translation, rotation, expansion, horizontal shear). Participants provided explicit preference ratings for these patterns. As expected results showed a preference for dynamic symmetrical patterns over random. When global transformations were compared, expansion was the preferred dynamic transformation whilst participants liked the horizontal shear transformation the least. Overall, these results show that preference for symmetry persists and is enhanced for dynamic stimuli, and that there are systematic preferences for global transformations
Les karsts d'Irlande, Barnes ST., Burke M., Coxon C, Daly D., Drew D., Jones G. L., Long M., Murphy B., & Wright G. 2000
No full textAudra Philippe. Les karsts d'Irlande, Barnes ST., Burke M., Coxon C, Daly D., Drew D., Jones G. L., Long M., Murphy B., & Wright G. 2000. In: Karstologia : revue de karstologie et de spéléologie physique, n°40, 2e semestre 2002. 20 ans de karstologie. Karst et carrières souterraines dans le Barrois. p. 63
[Letter from W. P. Wright to W. R. White - April 17, 1947]
No full textA letter written to Dr. W. R. White, First Baptist Church, Austin, Texas from W. P. Wright, Chairman, Board of Trustees dated April 17, 1947. Wright requests that White serve as chairman of the Denominational Committee and names the men that will serve with him: T. N. Carswell, vice-chairman, M. A. Jenkens, P. D. O'Brien, Vernon Yearby, Henry A. Littleton, T. A. Patterson, J. Ralph Grant
The Dayton-Wright Airplane Company organizational chart 1918
No full textThe photograph shows the organization chart for the Dayton-Wright Airplane Company in circa 1918. The chart is labeled with the names of the members of the company and their photographs. In the center at the top is pictured (from left to right) C. F. Kettering, H. E, Talbott Jr., H. E. Talbott, G. M. Williams. The far left of the photograph under the title Engineering is pictured - (from left to right) Orville Wright, J. M. Schoonmaker, H. S. Taylor, J. M. Jacobs, N. S. Clunet, L. C. Luneke, R. V. Hutchinson, H. M. Rinehart. Pictured in the center of the photograph under the title Manufacturing is -(from left to right) H. A. Fitzjohn, E. J. Tingle, F. W. Sutton, C. R. McLaughlin, W. S. Whittaker, F. W. Atkin, H. K. Hamilton, D. M. Dunwoodie, G. P. A. Stape, J. P. Henry, C. P. Nellis, R. J. King, J. L. Primmer, D. G. Calvert, B. J Van Doren, Harvey D. Geyer, J. H. Allen, W. F. Dupre, E. F. Bearce, J. E. Butz, G. Ramsey. Pictured on the left side of the photograph under the title Finance is (from left to right) G. H. Mead, C. J. Sherer, T. P. Gaddis, H. M. Howell, L. R. Scafe.https://corescholar.libraries.wright.edu/special_ms152_photographs/1058/thumbnail.jp
Soil and permafrost distribution, soil characterisation and soil vulnerability to human foot trampling, Wright Valley, Antarctica
No full textSoils and shallow permafrost in Wright Valley, Antarctica were mapped at a scale of 1:50 000 to depict their spatial distribution, and sampled to determine the main drivers for the soil classification.
In the cold desert of Wright Valley the Gelisol order of Soil Taxonomy was used to classify the soils. Soils on younger surfaces, associated with Lower Wright Glacier, Upper Wright Glacier and alpine glaciers, contain massive ice within 100 cm of the soil surface and are classified as Glacic Haplorthels or Glacic Haploturbels where there is field evidence of cryoturbation. As a generalization, at either end of the valley, soil moisture recharge from moist coastal air masses (eastern end) and blowing snow drifts maintain the depth to permafrost in which ice-cement occurs at 70 cm, are classified as Salic or Typic Anhyorthels or, where there is field evidence of cryoturbation, Anhyturbels.
While mapping soils in Wright Valley, the distribution and nature of the shallow permafrost were also investigated. Three classes of permafrost were established to coincide with definitions or conditions within Soil Taxonomy viz: permafrost with ice-cement at 70 cm, and massive ice.
A definition for a petrosalic horizon is proposed based on the properties of a salic horizon and the indurated nature of petrocalcic/petrogypsic horizons. The horizon is likely to occur only in the cold desert climate zones of Antarctica.
A rapid method to determine soil vulnerability to human foot traffic was developed. As vulnerability is the product of disturbance and rehabilitation, the method is based on the disturbance of 10 foot prints at a site multiplied by a soil rehabilitation factor based on the soil weathering stage. Although fine-grained aeolian sands are easily disturbed they also rehabilitate rapidly in the windy conditions of Wright Valley. In contrast, old stable soils have a tight cobbly desert pavement with reddish desert varnish and often show less foot print disturbance. When cobbles are overturned, however, fresh rock with thick salt accumulations and without desert varnish is exposed. It takes much time for the desert varnish to re-establish.
The spatial distribution of Soil Taxonomy soil classes, nature of the permafrost and soil vulnerability to human traffic are presented as three separate maps at 1:50 000 scale and as live GIS files
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