39,674 research outputs found

    Search for ηc\eta_{c}^{'} and hc(1P1)h_{c} (^{1}P_{1}) states in the e+ee^+ e^- annihilations

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    Productions and decays of spin-singlet S,PS,P-wave charmonium states, ηc\eta_{c}^{'} and hc(1P1)h_{c} (^{1}P_{1}), in the e+ee^+ e^- annihilations are considered in the QCD multipole expansion with neglecting nonlocality in time coming from the color-octet intermediate states. Our approximation is opposite to the Kuang-Yan's model. The results are B(ψhc+π0)0.3%B (\psi^{'} \rightarrow h_{c} + \pi^{0}) \approx 0.3 \%, B(ψη+γ)0.34%B ( \psi^{'} \rightarrow \eta^{'} + \gamma ) \approx 0.34 \%, Γ(ηcJ/ψ+γ)0.26\Gamma (\eta_{c}^{'} \rightarrow J/\psi + \gamma) \approx 0.26 keV and Γ(hcJ/ψ+π0)2.5\Gamma (h_{c} \rightarrow J/\psi + \pi^{0}) \approx 2.5 keV.Comment: LaTeX file, to appear in Phys. Rev.

    The Revolution Will Be Televised But Not Supported: Student Protest at Marquette University

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    This project examines the factors that affect the presence of student activism and student protest at Marquette University. The current social and political environment of the United States has created an exigence to discuss how students at Marquette critique their surroundings. Data is collected from a variety of sources including the author’s auto-ethnography, a review of historical and scholarly data, institutional data, and student and faculty interviews. Overall, the data shows that student protest and student activism at Marquette University exists amid a series of conflicting influences. The prioritization of donor-based funding and positive publicity, the ambiguity in the meaning of Marquette values, and the prevalence of repressive tolerance create an environment in which meaningful student activism is stifled.https://epublications.marquette.edu/english_3210ur/1036/thumbnail.jp

    An early Anglo-Saxon cemetery at Quarrington, near Sleaford, Lincolnshire : report on excavations, 2000-2001

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    [FIRST PARAGRAPH] The early Anglo-Saxon cemeteries in the Kesteven part of Lincolnshire form two distinct distribution patterns (Fig.1): a north-south line along, or just to the west of, the limestone edge between the former Roman towns of Lincoln and Ancaster, of which the best known is an outlier near its southern tip, the large mixed-rite site at Loveden Hill; and a cluster in the south-east, of which the best known are Ruskington and Sleaford, essentially inhumation cemeteries but with a handful of cremations each (Leahy 1993; 1999). This paper reports on the excavation of a small inhumation burial site just 2.5km west-south-west of the Sleaford cemetery and now in the civil parish of Sleaford, but formerly in the parish of Quarrington (Fig.2). An Anglo-Saxon burial site has been known from near here since the early nineteenth century, when urned cremations and accompanying inhumations were discovered during gravel digging (Yerburgh 1825; Trollope 1872, pp.98-100; Meaney 1964, pp.160-61; Lincolnshire Historic Environment Record, no.60375). Recently, an Anglo-Saxon settlement of the sixth to eighth centuries has been excavated at Town Road, Quarrington, 1.1km to the east (Taylor 2003). The interrelationship of these three Anglo-Saxon sites is a matter for discussion (below), but it is proposed that the nineteenthcentury discoveries now be known as Quarrington I and the new burial area as Quarrington II

    The RCRs in Sicily

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    Account given by Major T.M. Powers, second-in-command Royal Canadian Regiment, on 18 August 1943 in battalion rest area near SCORDIA, SICILY

    Symbols of protection : the significance of animal-ornamented shields in early Anglo-Saxon England

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    The significance of shields with animal ornament on the boss and/or board in early Anglo-Saxon society is sought in the coincidence of artefactual, stylistic and iconographic symbolism. Twenty shields buried in the 6th to earliest 7th century, together with seventeen further mounts which were probably originally designed for shields, form the basis of a systematic typological review; decoration in Salin's Style I is emphasised. Analysis of dating, distribution and use in burial establishes cultural and social contexts. The meaning of the ornamental repertoire is sought through iconographic analogies, notably with Scandinavian bracteates and their putative association with a cult of Óðinn/Woden. It is proposed that the animal ornament invested the shields with a specific apotropaic quality, which emphasised, and amplified, the protective role of select adult males, and hence their authority over kin, community and even kingdo

    Translating animal art: Salin’s Style I and Anglo-Saxon cast saucer brooches

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    Saucer brooches are actually the most frequent bearers of Salin’s Style I in England, but have been overlooked because of perceptions of the derivative nature of their ornament. This paper seeks to rectify the inbalance by accepting that translation (in a physical and linguistic sense) is the key to understanding both the form which Style I took on saucer brooches and potentially its meanings. The study is based on 281 cast saucer brooches (almost half the total corpus of the type): half feature zoomorphic decoration on its own and half combine zoomorphic and geometric motifs. The animal art is characterised in terms of motifs, presentation and composition. While ‘coherent’ motifs, recognisable from the classic, early repertoire of Style I, are reasonably well represented, attention is mostly given to the way motifs and designs were transformed, involving both established principles of Style I design (abbreviation, addition, re-assembly and ambiguity) and adaptation to the pre-existing, geometric-based, saucer-brooch tradition. Although calibrating the pace of change (devolution?) is difficult, the process can be shown to have endured throughout the 6th century and to have been most practised in western Anglo-Saxon districts. Explaining the meaning and role of this transformed animal art is obviously hard, but it is argued that it was the result not of ignorance or carelessness, but a deliberate choice. By adopting images from Northern Germanic mythology and blending them with other (Roman and Saxon) symbols, meanings were both perpetuated and subtly altered, enabling important kindred outside Kent and the main Anglian areas to negotiate their own identity and affiliations

    Choice and ground of sifting surfaces quantity at cascade classification

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    У статті розглядається спосіб каскадної гравітаційної сепарації дрібнофракційних матеріалів, який заснований на принципі багаторазового повторення процесу поділу потоку сипучого матеріалу на каскаді послідовно встановлених розділових елементів, що дозволяє повною мірою використовувати ефект гравітаційного поділу при класифікації сипучих ма-теріалів по комплексу фізико-механічних властивостей частинок. Здійснено вибір пара-метрів для розподілу матеріалу. А також проведено аналіз необхідної кількості просівальних вузлів.Пропонований спосіб дозволяє підвищити ефективність розділення матеріалу і розши-рити функціональні можливості обладнання.В статье рассматривается способ каскадной гравитационной сепарации мелкофрак-ционных материалов, который основан на принципе многократного повторения процесса разделения потока сыпучего материла на каскаде последовательно установленных разде-лительных элементов, что позволяет в полной мере использовать эффект гравитационного разделения при классификации сыпучих материалов по комплексу физико-механических свойств частиц. Осуществлен выбор параметров для разделения материала. А также проведен анализ необходимого количества просеивающих узлов. Предлагаемый способ позволяет повысить эффективность разделения материала и расширить функциональные возможности оборудования.In this paper, a method of cascading gravity separation small fraction of materials, which is based on the principle of multiple repetition of the process of separation of the flow of particulate matter on the stage successively established the separation of elements that allows full use of the effect of gravitational separation in the classification of bulk materials on a range of physical and mechani-cal properties of the particles. Implemented choice of parameters for the separation of the material. As well as an analysis of the required number of screening sites. The proposed method allows to in-crease the separation efficiency of the material and expand the functionality of the equipment

    Research of grating efficiency dependence on the sifting surface form

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    З метою обгрунтування вибору та використання дугових поверхонь просіювання була виконана серія дослідів, які дозволили встановити, що ефективність розділення дрібнофрак-ційних матеріалів на дугових поверхнях вище, ніж на аналогічних похилих поверхнях просіювання. Це дозволяє зробити висновок про доцільність їх застосування в промисло-вості.С целью обоснования выбора и использования дуговых просеивающих поверхностей бы-ла выполнена серия опытов, которые позволили установить, что эффективность разделе-ния мелкофракционных материалов на дуговых просеивающих поверхностях выше, нежели на аналогичных наклонных просеивающих поверхностях. Это позволяет сделать вывод о це-лесообразности их применения в промышленности.In order to justify the selection and use of arc surfaces screening was performed a series of ex-periments that revealed that the separation efficiency dribnofraktsiynyh materials arc surfaces higher than similar screening inclined surfaces. This suggests the feasibility of their application in industry

    Management Objectives for Local Rail Services.

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    Using hierarchical logit modal split models, and trip data from West Yorkshire, the effects of pursuing a number of different operating strategies for local rail services were analysed. These were judged against two possible management objectives which railway operators might be set, to find which policies best served each objective. The more pragmatic objective of maximising rail passenger-km. turned out to give similar policy implications to an objective of maximising social benefit. These weredthat both objectives could best be satisfied by a combination of lower fares and replacement of lightly loaded services by express bus. Conclusions on frequencies were less clearcut, but it appeared that very high elasticities would be required to justify peak frequencies above the minimum necessary to cope with the traffic. The major difference between the objectives came in the treatment of off-peak rail fares, where reductions could bring larger increases in passenger kilometres but similar or smaller social benefits per pound to peak reductions. Much cruder estimates are given of the effects of varying fares on two inter city and one London suburban routes. It is shown that a fares increase on the London suburban service, if used to finance a reduction on the local provincial services, would bring in 3 times as many passenger kilometres; if used to finance a reduction on the inter city routes, the figure would be 2-4 times. Whether such a diversion would be justified depends on the external benefits of the London suburban services, measurement of which is very difficult and beyond the scope of this study
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