19,120 research outputs found
General Correspondence; Allen, D. R.; 1892; 1895
No full textFour letters from David R. Allen to John M. Whitaker, 1891-1895, plus one concerning AllenLetter dated 12 January 1891 at Verona, Utah, from David R. Allen to John M. Whittaker; Letter dated 23 November 1892 at Salt Lake City, Utah, from David R. Allen to John M. Whittaker; Letter dated 7 January 1893 at Verona, Utah, from David R. Allen to John M. Whittaker; Letter dated 10 January 1893 at Salt Lake City, Utah, from David R. Allen to John M. Whittaker; Letter dated 2 December 1895 at Salt Lake City, signed by Daniel Whipple, B. W. Ashton, Mrs. B. F. Randolph, T. F. Howells, and B. J. Stewart, inviting the recipient to a meeting of the trustees where they will express appreciation to David R. Allen for the four years that he served as Superintendent of the Schools of Salt Lake Count
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David Miller interviewed by Tim Allen: Shuffling of revelation and occlusion
No full textToxotes kimberleyensis Allen
No full textToxotes kimberleyensis Allen Kimberley Archerfish The most recently described freshwater species from the Kimberley, Toxotes kimberleyensis, in contrast to T. chatareus, is restricted to the south-western corner of the region (Fig. 39). The species is widespread throughout the Fitzroy River (Morgan et al. 2002, 2004a), but has also been reported from the May, Meda and Isdell River systems (Fig. 39). The original description of this species utilised specimens from the May and Lennard Rivers (Allen 2004).Published as part of Morgan, David L., Allen, Gerald R., Pusey, Bradley J. & Burrows, Damien W., 2011, 2816, pp. 1-64 in Zootaxa 2816 on page 1
Air quality impacts of plug-in hybrid electric vehicles in Texas: Evaluating three battery charging scenarios
No full textTammy Thompson is with Massachusetts Institute of Technology, Carey King is with UT Austin, David Allen is with UT Austin, and Michael Webber is with UT AustinThe air quality impacts of replacing approximately 20% of the gasoline-powered light duty vehicle
miles traveled (VMT) with electric VMT by the year 2018 were examined for four major cities in
Texas: Dallas/Ft Worth, Houston, Austin, and San Antonio. Plug-in hybrid electric vehicle (PHEV)
charging was assumed to occur on the electric grid controlled by the Electricity Reliability Council of
Texas (ERCOT), and three charging scenarios were examined: nighttime charging, charging to
maximize battery life, and charging to maximize driver convenience. A subset of electricity generating
units (EGUs) in Texas that were found to contribute the majority of the electricity generation needed to
charge PHEVs at the times of day associated with each scenario was modeled using a regional
photochemical model (CAMx). The net impacts of the PHEVs on the emissions of precursors to the
formation of ozone included an increase in NOx emissions from EGUs during times of day when the
vehicle is charging, and a decrease in NOx from mobile emissions. The changes in maximum daily 8 h
ozone concentrations and average exposure potential at twelve air quality monitors in Texas were
predicted on the basis of these changes in NOx emissions. For all scenarios, at all monitors, the impact
of changes in vehicular emissions, rather than EGU emissions, dominated the ozone impact. In general,
PHEVs lead to an increase in ozone during nighttime hours (due to decreased scavenging from both
vehicles and EGU stacks) and a decrease in ozone during daytime hours. A few monitors showed a
larger increase in ozone for the convenience charging scenario versus the other two scenarios.
Additionally, cumulative ozone exposure results indicate that nighttime charging is most likely to
reduce a measure of ozone exposure potential versus the other two scenarios.Mechanical Engineerin
Le débat d'idées avant et après le démantèlement d'AT&T. Une chronique
No full textThe breaking up of the american telephone company was accompanied by debate involving numerous judicial, legislative and executive agents, as well as intellectuals, academics and researchers. Through a glimpse of AT&T's history and the events directing its dismantling, David Allen takes up the main points of the debate and attempts to measure its effects now that opinion seems to have swung around and nobody is questioning the validity of deregulation.L'éclatement de la société américaine des téléphones s'est accompagné d'un débat d'idées qui a impliqué de nombreux agents du judiciaire, du législatif et de l'exécutif. Cependant, intellectuels, universitaires et chercheurs ne sont pas restés en marge de cette controverse. A travers cet aperçu de l'histoire d'AT&T et des événements qui ont présidé au démantèlement, David Allen reprend les grands points du débat d'idées et s'attache à en mesurer les prolongements à présent qu'un revirement d'opinion semble s'être produit et que d'aucuns s'interrogent sur la validité de la dérégulation.Allen David, Albaret Michèle. Le débat d'idées avant et après le démantèlement d'AT&T. Une chronique. In: Réseaux, volume 10, n°56, 1992. Télécommunication : d'une organisation à l'autre. pp. 93-118
Asioplax dolani Allen
No full textAsioplax dolani (Allen) Asioplax dolani was originally described in Leptohyphes by Allen (1967) based upon a small series of larvae from the Savannah River at the South CarolinaGeorgia border. It was later reported from Texas (Allen and Roback, 1969) and Florida (Lager, 1985). Allen and Roback (1969) based these records upon specimens collected in 1962 by S.S. Roback from the Guadalupe River near Victoria, Texas, then a second time by Allen (1978) from specimens collected in 1950 and 1952 by T. Dolan IV from near the same locality. No other records of this species in Texas have been reported until now. New records given below document A. dolani from the Austroriparian ecological region of East Texas, where larvae occupied crevices on snags in moderatesized, sandybottomed streams with dense riparian vegetation. Lager (1985) reported a similar microhabitat for this species in a Florida stream. Study of the published holotype and paratypes of this species showed them to be undissected and in good condition, with clear indications of which specimen was designated the holotype, and which the paratypes. In addition to the type series listed in the literature, a third vial from ANSP contained three larvae of A. dolani, three associated slides, and a label indicating that they were paratypes. Because these specimens were collected many years before the species description, have the same style of labels as the published type series, and have associated slides from which the original figures appeared to have been drawn, it appears that Allen intended to publish them as part of the type series but inadvertently did not include them in the original publication. As such, they should be considered valid paratypes. Type Material Examined: HOLOTYPE: Savannah River, Dikes above Ellenton, S.C., Station 1, IX 21955, S.S. Roback (ANSP). PARATYPES: Savannah River, South CarolinaGeorgia, Station 6 A, SS Roback, VIII 2155, 1L (ANSP). Savannah River, Ga S.C., Station 5, T.Dolan IV, X 2351, 1L (ANSP). Following specimens originally unpublished Savannah River, GeorgiaSouth Carolina Station 1, Aiken Co., S.C., T. Dolan IV, VII 2651, 3L (Survey SRP # 1), 3 slides (ANSP). Additional Material Examined: South Carolina: Newberry Co., Little River on Hwy. # 56, 4 xiii 1955, Hynes, 1 L (FAMU). Texas: Montgomery Co., Peach Creek, 16 vi 1998, D.E. Bowles, 3 L (TAMU); San Jacinto Co., Winters Bayou, Sam Houston National Forest, ca. 5 mi. NW Cleveland, 03x 1999, D.E. Baumgardner, 2 F (reared) (TAMU).Published as part of Baumgardner, David E., Burian, Steven K. & Bass, David, 2003, Life stage descriptions, taxonomic notes, and new records for the mayfly family Leptohyphidae (Ephemeroptera), pp. 1-12 in Zootaxa 332 on pages 2-3, DOI: 10.5281/zenodo.15666
Hundreds of variants clustered in genomic loci and biological pathways affect human height
No full textMost common human traits and diseases have a polygenic pattern of inheritance: DNA sequence variants at many genetic loci influence the phenotype. Genome-wide association (GWA) studies have identified more than 600 variants associated with human traits(1), but these typically explain small fractions of phenotypic variation, raising questions about the use of further studies. Here, using 183,727 individuals, we show that hundreds of genetic variants, in at least 180 loci, influence adult height, a highly heritable and classic polygenic trait(2,3). The large number of loci reveals patterns with important implications for genetic studies of common human diseases and traits. First, the 180 loci are not random, but instead are enriched for genes that are connected in biological pathways (P = 0.016) and that underlie skeletal growth defects (P<0.001). Second, the likely causal gene is often located near the most strongly associated variant: in 13 of 21 loci containing a known skeletal growth gene, that gene was closest to the associated variant. Third, at least 19 loci have multiple independently associated variants, suggesting that allelic heterogeneity is a frequent feature of polygenic traits, that comprehensive explorations of already-discovered loci should discover additional variants and that an appreciable fraction of associated loci may have been identified. Fourth, associated variants are enriched for likely functional effects on genes, being over-represented among variants that alter amino-acid structure of proteins and expression levels of nearby genes. Our data explain approximately 10% of the phenotypic variation in height, and we estimate that unidentified common variants of similar effect sizes would increase this figure to approximately 16% of phenotypic variation (approximately 20% of heritable variation). Although additional approaches are needed to dissect the genetic architecture of polygenic human traits fully, our findings indicate that GWA studies can identify large numbers of loci that implicate biologically relevant genes and pathways
Post-war British working-class fiction with special reference to the novels of John Braine, Alan Sillitoe, Stan Barstow, David Storey and Barry Hines
No full textThis study is about British working-class fiction in the post-war period.
It covers various authors such as Robert Tressell, George Orwell, Walter Greenwood, Lewis Grassic Gibbon and DH Lawrence from the early twentieth century; writers traditionally classified as 'Angry Young Men' like John Osborne, Arnold Wesker, Shelagh Delaney, John Wain and
Kingsley Amis; and working-class novelists like John Braine, Stan Barstow, David Storey, Alan Sillitoe and Barry Hines from the 1950s and 1960s.
Some of the main issues dealt with in the course of this study are language, form, community, self/identity/autobiography, sexuality and relationship with bourgeois art. The major argument centres on two questions: representation of working-class life, and the
relationship between working-class literary tradition and dominant ideologies.
We will be arguing that while working-class fiction succeeded in challenging and rupturing bourgeois literary tradition, on the level of language and linguistic medium of expression for example, it utterly failed to break away from dominant, bourgeois modes of literary production in relation to form, for instance.
Our argument is situated within Marxist approaches to literature, a political and aesthetic position from which we attempt an analysis and an evaluation of this working-class literary tradition. These critical approaches provide us also with the theoretical tool to define the political perspective of this tradition, and to judge whether it was confined to a descriptive mode of representation or
located in a radical, political outlook
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Air quality impacts of using overnight electricity generation to cahrge plug-in hybrid electric vehicles for daytime use
No full textThe air quality impacts of replacing 20% of the gasoline powered light duty vehicle miles
traveled with plug-in hybrid electric vehicles (PHEVs) in the region served by the Pennsylvania,
New Jersey, Maryland classic grid are examined. Unutilized, base-load nighttime electricity
generating capacity is assumed to charge PHEVs that would subsequently be used during urban
commutes. The net impact of this scenario on the emissions of precursors to the formation of
ozone is an increase in nitrogen oxide (NOx), volatile organic compound (VOC) and CO
emissions from electricity generating units during nighttime hours, and a greater decrease in
NOx, VOC and CO from mobile emissions in urban areas during daytime hours. The changes
in maximum daily 8 h ozone concentrations, predicted using a regional photochemical model
(CAMx), are decreases in ozone concentrations between 2 and 6 ppb that are widespread across
the urban areas, and increases in ozone concentrations of up to 8 ppb in highly localized areas.
Air quality indicators beyond maximum daily ozone concentration are also evaluated, and in
general indicate air quality improvements associated with the use of PHEVs. However, a
limited number of air quality indicators worsened with the use of PHEVs, suggesting that
overall impacts of the use of PHEVs will be complex.Mechanical Engineerin
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