1,404 research outputs found

    World Civilizations I & II (GHC)

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    This Grants Collection for World Civilizations I & II was created under a Round Ten ALG Textbook Transformation Grant. Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process. Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials: Linked Syllabus Initial Proposal Final Reporthttps://oer.galileo.usg.edu/history-collections/1008/thumbnail.jp

    The Culture of Poverty Debate: Some Additional Data

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    In this paper we briefly review relevant research on the culture of poverty and set our findings within the general context of culture of poverty arguments. Data from a community survey in a Southwestern city are analyzed using Oscar Lewis’ four major culture of poverty dimensions: 1) the individual, 2) the family, 3) the slum community, and 4) the community’s relation to society. In our study a sample of 271 black respondents was divided into two groups, here termed the “poor” and the “non-poor.” In noting all the broad traits studied in all dimensions taken together, some support for Lewis’ culture of poverty was found in less than half of the cases; and in several cases our findings were in direct opposition to culture of poverty predictions. In addition, we have suggested that the majority of those traits that did lend support to Lewis’ argument might be better classified as situational conditions of poverty rather than as a part of a bona fide “culture” of poverty. The findings of this paper may call into question the use of the “culture of poverty” perspective as a basis for policy decisions

    American History I & II (GHC)

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    This Grants Collection for American History I & II was created under a Round Eight ALG Textbook Transformation Grant. Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process. Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials: Linked Syllabus Initial Proposal Final Reporthttps://oer.galileo.usg.edu/history-collections/1005/thumbnail.jp

    Hyperspherical partial wave calculation for double photoionization of the helium atom at 20 eV excess energy

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    Hyperspherical partial wave approach has been applied here in the study of double photoionization of the helium atom for equal energy sharing geometry at 20 eV excess energy. Calculations have been done both in length and velocity gauges and are found to agree with each other, with the CCC results and with experiments and exhibit some advantages of the corresponding three particle wave function over other wave functions in use.Comment: 11 pages, 1 figure, submitted to J. Phys B: At. Mol. Opt. Phys; v2 - revised considerably, rewritten using ioplatex clas

    Shelter from the storm? Use and misuse of coastal vegetation bioshields for managing natural disasters

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    Vegetated coastal ecosystems are known to provide myriad ecosystem services to billions of people globally. However, in the aftermath of a series of recent natural disasters, including the Indian Ocean Tsunami, Hurricane Katrina and Cyclone Nargis, coastal vegetation has been singularly promoted as a protection measure against large storm surges and tsunami. In this paper, we review the use of coastal vegetation as a "bioshield" against these extreme events. Our objective is to investigate the long-term consequences of rapid plantation of bioshields on local biodiversity and human capital. We begin with an overview of the scientific literature, in particular focusing on studies published since the Indian Ocean Tsunami in 2004 and discuss the science of wave attenuation by vegetation. We then explore case studies from the Indian subcontinent and evaluate the detrimental impacts bioshield plantations can have upon native ecosystems. We draw a clear distinction between coastal restoration and the introduction of exotic species in inappropriate locations in the name of coastal protection. We conclude by placing existing bioshield policies into a larger socio-political context and outline a new direction for coastal vegetation policy and research

    Threshold Laws for the Break-up of Atomic Particles into Several Charged Fragments

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    The processes with three or more charged particles in the final state exhibit particular threshold behavior, as inferred by the famous Wannier law for (2e + ion) system. We formulate a general solution which determines the threshold behavior of the cross section for multiple fragmentation. Applications to several systems of particular importance with three, four and five leptons (electrons and positrons) in the field of charged core; and two pairs of identical particles with opposite charges are presented. New threshold exponents for these systems are predicted, while some previously suggested threshold laws are revised.Comment: 40 pages, Revtex, scheduled for the July issue of Phys.Rev.A (1998

    Intermanifold similarities in partial photoionization cross sections of helium

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    Using the eigenchannel R-matrix method we calculate partial photoionization cross sections from the ground state of the helium atom for incident photon energies up to the N=9 manifold. The wide energy range covered by our calculations permits a thorough investigation of general patterns in the cross sections which were first discussed by Menzel and co-workers [Phys. Rev. A {\bf 54}, 2080 (1996)]. The existence of these patterns can easily be understood in terms of propensity rules for autoionization. As the photon energy is increased the regular patterns are locally interrupted by perturber states until they fade out indicating the progressive break-down of the propensity rules and the underlying approximate quantum numbers. We demonstrate that the destructive influence of isolated perturbers can be compensated with an energy-dependent quantum defect.Comment: 10 pages, 10 figures, replacement with some typos correcte

    The ideology and discourse of the English Defence League: ‘Not racist, not violent, just no longer silent’

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    The English Defence League (EDL) emerged in 2009 and quickly became a major ‘anti-Islamist’ street protest movement, able to attract thousands to its national demonstrations. Despite the violence and anti-Muslim rhetoric associated with its protests, the group claims to be an anti-racist human rights organisation dedicated to protecting liberal freedoms. This article employs a critical methodology to address these claims, analysing EDL literature alongside strategies identified as typical of racist discourse construction. The representations, narratives and rhetorical strategies used by the group support the analysis of EDL Islamophobia as a form of cultural racism that constructs opposing ‘British’ and ‘Muslim’ subjects and functions to maintain traditional ethno-cultural dominance of the former over the latter

    Quantitative Radiographic Measurement of Dentinal Lesions

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    The purpose of this investigation was the comparison of the precision and accuracy of two reference ramp techniques for the quantification of radiographic density changes in teeth. Radiographs (65 kVp, 10 ma, 1 s, and intra-oral ultraspeed film) of transverse sections from extracted permanent human molars were made before and after dentinal lesions were created. Each radiograph contained the image of a tooth section and the aluminum reference ramp. Method A used the image of the ramp on both the before-and after-lesion radiographs, and method B used the image of the ramp only on the before-lesion radiograph. Three groups of lesions (0.525-mm diameter, n = 11; 0.675-mm diameter, n = 9; and the 0.525-mm holes enlarged to 0.675 mm) were measured radiographically by each technique and by direct planimetry of the lesions. Radiographic method B produced results in close agreement with the planimetric measurements. Method B differentiated (p < 0. 05) between groups that had a mean planimetric size difference of0.10 mm (equivalent to a change in density difference of 0.6%). These density change measurements are in absolute units ofmm ofaluminum that can be compared between lesions and between samples. This technique may prove useful for the quantification of changes in mineral density of caries lesions detectable in longitudinal radiographic records
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