660 research outputs found

    Texts on the Table:The Tabulae Iliacae in their Hellenistic literary context

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    This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.This article re-evaluates the 22 so-calledTabulae Iliacae. Where most scholars (especially in the English-speaking world) have tended to dismiss these objects as ‘trivial' and ‘confused’, or as ‘rubbish’ intended for the Roman ‘nouveaux riches’, this article relates them to the literary poetics of the Hellenistic world, especially Greek ecphrastic epigram. Concentrating on the tablets' verbal inscriptions, the article draws attention to three epigraphic features in particular. First, it explores the various literary allusivenesses of the two epigrammatic invocations inscribed on tablets 1A and 2NY; second, it examines the Alexandrian diagrammatic word-games on the reverse of sevenTabulae(2NY, 3C, 4N, 5O, 7Ti, 15Ber, 20Par), relating these to the pictorial-poetic games of the Greektechnopaegnia; third, it discusses the possible hermeneutic significance of associating six tablets with ‘Theodoreantechne’ (1A, 2NY, 3C, 4N, 5O, 20Par), comparing a newly discovered epigram by Posidippus (67 A-B). All of these allusions point to a much more erudite purpose and clientele: the tablets toyed with Hellenistic visual-verbal relations at large.Peer Reviewe

    Equity and growth in developing countries : old and new perspectives on the policy issues

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    The"stylized fact"that distribution must get worse with economic growth in poor countries before it can get better turns out not to be a fact at all. Growth's effects on inequality can go either way and are contingent on several other factors. The authors found no sign in the new cross-country data they assembled that growth has any systematic impact on inequality. Possibly measurement errors confound the true relationship, but they think it more likely that the relationship between growth and distribution is not as simple as some theories have held. Since distribution does not worsen, growth reduces absolute poverty. Indeed, absolute poverty measures typically respond quite elastically to growth, and the benefits are certainly not confined to those near typical poverty lines. Of course, one cannot say that growth always benefits the poor or that none of the poor lose from pro-growth policy reform. Only aggregate effects are studied. But for 17 of the 20 countries for which they assemble quite good data (from at least two surveys since the mid-1980s), the mean and the proportion of people living below $1 a day moved in opposite directions. The gains to poor people from a distribution-neutral growth process will tend to be lower, the higher the extent of initial inequality. A smaller share of total income must imply a smaller absolute gain from a given increment to total income. Compensatory direct interventions can be important, provided they are integrated into a framework of fiscal and monetary discipline. The evidence does not suggest that growth is always distribution-neutral, and it would be wrong to conclude that changes in distribution are of little consequence. The point is not that distribution is irrelevant or that it never changes, but that its changes are roughly uncorrelated with economic growth. There is no intrinsic tradeoff between long-run aggregate efficiency and overall equity. Policies aimed at helping the poor accumulate productive assets--especially policies to improve schooling, health, and nutrition--when adopted in a relatively nondistorted framework, are important instruments for achieving higher growth.Services&Transfers to Poor,Environmental Economics&Policies,Economic Conditions and Volatility,Health Monitoring&Evaluation,Public Health Promotion,Achieving Shared Growth,Inequality,Governance Indicators,Safety Nets and Transfers,Rural Poverty Reduction

    Evaluating Micrometeoroid and Orbital Debris Risk Assessments Using Anomaly Data

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    The accuracy of micrometeoroid and orbital debris (MMOD) risk assessments can be difficult to evaluate. A team from the National Aeronautics and Space Administration (NASA) Engineering and Safety Center (NESC) has completed a study that compared MMOD-related failures on operational satellites to predictions of how many of those failures should occur using NASA's TM"s MMOD risk assessment methodology and tools. The study team used the Poisson probability to quantify the degree of inconsistency between the predicted and reported numbers of failures. Many elements go into a risk assessment, and each of those elements represent a possible source of uncertainty or bias that will influence the end result. There are also challenges in obtaining accurate and useful data on MMOD-related failures

    Roman art

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    Effect of organic crop rotations on long-term development of the weed seedbank

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    Changes in the weed seedbank were monitored between 1991 and 1998 in two experiments that were established to compare organic crop rotations at two sites in NE Scotland. Two rotations, replicated twice at each site, were compared and all courses of both rotations were present every year. There were relatively minor changes in weed species diversity over time, but major changes in seedbank abundance. Weed seed numbers were relatively low in rotations with a high proportion of grass/clover ley. Differences in level of seedbank across the rotation were relatively predictable at Tulloch but much less so at Woodside where factors such as the effect of the grass/clover ley seemed to play a lesser role. Other factors, such as weather and its influence on the effectiveness of weed control operations, and higher populations of ground-living arthropods, may be affecting the Woodside seedbanks

    Induction Brazing

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    Our team would like to research and explore ways of designing a portable device that uses induction heating/brazing to connect two exhaust pipes together

    Independent Review of U.S. and Russian Probabilistic Risk Assessments for the International Space Station Mini Research Module #2 Micrometeoroid and Orbital Debris Risk

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    The Mini-Research Module-2 (MRM-2), a Russian module on the International Space Station, does not meet its requirements for micrometeoroid and orbital debris probability of no penetration (PNP). To document this condition, the primary Russian Federal Space Agency ISS contractor, S.P. Korolev Rocket and Space Corporation-Energia (RSC-E), submitted an ISS non-compliance report (NCR) which was presented at the 5R Stage Operations Readiness Review (SORR) in October 2009. In the NCR, RSC-E argued for waiving the PNP requirement based on several factors, one of which was the risk of catastrophic failure was acceptably low at 1 in 11,100. However, NASA independently performed an assessment of the catastrophic risk resulting in a value of 1 in 1380 and believed that the risk at that level was unacceptable. The NASA Engineering and Safety Center was requested to evaluate the two competing catastrophic risk values and determine which was more accurate. This document contains the outcome of the assessment

    Genome analysis of Clostridium difficile PCR ribotype 014 lineage in Australian pigs and humans reveals a diverse genetic repertoire and signatures of long-range interspecies transmission

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    Clostridium difficile PCR ribotype (RT) 014 is well-established in both human and porcine populations in Australia, raising the possibility that C. difficile infection (CDI) may have a zoonotic or foodborne etiology. Here, whole genome sequencing and high-resolution core genome phylogenetics were performed on a contemporaneous collection of 40 Australian RT014 isolates of human and porcine origin. Phylogenies based on MLST (7 loci, STs 2, 13, and 49) and core orthologous genes (1260 loci) showed clustering of human and porcine strains indicative of very recent shared ancestry. Core genome single nucleotide variant (SNV) analysis found 42 % of human strains showed a clonal relationship (separated by ≀ 2 SNVs in their core genome) with one or more porcine strains, consistent with recent inter-host transmission. Clones were spread over a vast geographic area with 50 % of the human cases occurring without recent healthcare exposure. These findings suggest a persistent community reservoir with long-range dissemination, potentially due to agricultural recycling of piggery effluent. We also provide the first pan-genome analysis for this lineage, characterizing its resistome, prophage content, and in silico virulence potential. The RT014 is defined by a large “open” pan-genome (7587 genes) comprising a core genome of 2296 genes (30.3 % of the total gene repertoire) and an accessory genome of 5291 genes. Antimicrobial resistance genotypes and phenotypes varied across host populations and ST lineages and were characterized by resistance to tetracycline [tetM, tetA(P), tetB(P) and tetW], clindamycin/erythromycin (ermB), and aminoglycosides (aph3-III-Sat4A-ant6-Ia). Resistance was mediated by clinically important mobile genetic elements, most notably Tn6194 (harboring ermB) and a novel variant of Tn5397 (harboring tetM). Numerous clinically important prophages (Siphoviridae and Myoviridae) were identified as well as an uncommon accessory gene regulator locus (agr3). Conservation in the pathogenicity locus and S-layer correlated with ST affiliation, further extending the concept of clonal C. difficile lineages. This study provides novel insights on the genetic variability and strain relatedness of C. difficile RT014, a lineage of emerging One Health importance. Ongoing molecular and genomic surveillance of strains in humans, animals, food, and the environment is imperative to identify opportunities to reduce the overall CDI burden
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