7,963 research outputs found

    Trade Liberalisation is Good for You if You are Rich

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    This paper investigates the relationship between trade policy and growth using a dynamic panel regression model with GMM estimates for data on 44 developing countries over 1980-1999. Trade policy is captured by measures of tariffs, import and export taxes. Typically, the average effects of changes in such policy variables have been investigated. However, from a policy perspective, the differential effects on high-or low-income countries may be of more interest. Our preferred specification for growth thus includes as an explanatory variable an interaction term between trade barriers and initial income levels to capture the non-linearity in the relationship. This specification reveals a significant interaction effect under which the marginal impactof tariffs on growth is declining in initial income. In particular, for low-income countries tariffs appear to be associated with higher growth, whereas only for middle-income and richer countries is there a negative impact of tariffs on growth. The impact of a marginal change in protection on growth changes from positive to negative as income increases beyond a threshold level of GDP per capita (below which, in rough terms, a country would be classed as low-income). Put differently, trade liberalisation seems to offer the possibility of achieving faster growth only in relatively richer countries.Growth; Openness; Trade barriers; Cross-country analysis

    Iphimediidae of New Zealand (Crustacea, Amphipoda)

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    New Zealand species of Iphimediidae, Amphipoda, are revised. Based on new material from the Chatham Rise, east of New Zealand, two new species are described in detail: Labriphimedia meikae sp. nov. and Labriphimedia martinae sp. nov. A key to the six species belonging to three genera of New Zealand Iphimediidae is provided

    Charged Schrodinger Black Holes

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    We construct charged and rotating asymptotically Schrodinger black hole solutions of IIB supergravity. We begin by obtaining a closed-form expression for the null Melvin twist of a broad class of type IIB backgrounds, including solutions of minimal five-dimensional gauged supergravity, and identify the resulting five-dimensional effective action. We use these results to demonstrate that the near-horizon physics and thermodynamics of asymptotically Schrodinger black holes obtained in this way are essentially inherited from their AdS progenitors, and verify that they admit zero-temperature extremal limits with AdS_2 near-horizon geometries. Notably, the AdS_2 radius is parametrically larger than that of the asymptotic Schrodinger space.Comment: 22 pages, LaTe

    A Biological Investigation on Plethodon Larselli

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    The purpose of this study is to increase the presently-lacking biological knowledge of P. larselli. A study was made, therefore, on this species relative to its geographical distribution, habitat, dehydration and rehydration rates, response to induction with varying concentrations of a gonadotropic hormone, and blood serum analysis by cellulose acetate electrophoresis. In addition, the findings of this investigation will help elucidate the relationship between P. larselli and P. vehiculum

    Movements and habitat use of southeastern blue sucker Cycleptus merdionalis in the lower Pearl River

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    Riverine fisheries management programs often do not focus on non-sport and non-commercial fishes, such as catostomids, yet many suckers have become threatened or endangered throughout river systems in the United States because of habitat alterations. In the Pearl River, sedimentation, dam construction, and other hydrologic modifications have negatively impacted habitats used by southeastern blue suckers Cycleptus meridionalis, a species of concern in both Louisiana and Mississippi. The principal objective of this project was to investigate habitat use of likely historically abundant southeastern blue suckers in the lower Pearl River. During electrofishing surveys in 2010 and 2011, we observed no southeastern blue suckers in the west branch of the Pearl River, and significantly lower catch rates in the main branch of the Pearl River (Mean Catch Per Unit Effort (CPUE) = 0.053/minute) relative to three other common benthic Pearl River fishes, including smallmouth buffalo Ictiobus bubalus (P\u3c 0.0018), channel catfish Ictalurus punctatus (P\u3c 0.0001) and flathead catfish Pylodictus olivaris (P\u3c 0.0017). However, CPUE for southeastern blue suckers was similar to quillback Carpiodes cyprinus (P=0.999) and highfin carpsucker Carpiodes velifer (p=0.999). A mark and recapture population analysis was unable to generate a reasonable population estimate for southeastern blue suckers in this section of the Pearl River. The low CPUE values for other non-buffalo catostomids indicates that the availability of suitable habitat may be limiting populations of benthic suckers in the southern portions of the river. Habitat use of radio-tagged southeastern blue suckers indicated a strong affinity for deeper, outside river bends with accumulations of large woody debris and gravel, with high habitat specificity indicated by extended periods of little movement from these areas. Limited movements suggest a low potential for colonization of new areas or recolonization of abandoned habitats within the river. Raising the threat status for southeastern blue suckers, both globally and in Louisiana, may be warranted given their high habitat specificity, low recolonization potential, and susceptibility to the continuing degradation of their preferred habitats from sedimentation

    Sports column writing : a comparison of ten 1957 and five 1927 columnists

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    "It is the purpose of this study to: (1) Compare the sports column style of the 'Golden Era of Sports'(1927) with our modern (1957) columnists and (2) To analyze the content of the modern sports columns as exemplified in the ten writers selected."--Page

    The document "L" and its corollaries.

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    Thesis (M.A.)--Boston University, 1940The purpose of this study was three-fold: to analyze the sources of St. Luke's Gospel; to study the likelihood of a written source called L; and to study Luke's method of compiling the gospel. This work had its origin in the studies of P. Feine, E. Weiss and others and has reached a new interest in the work of B. H. Streeter. Streeter has produced a "four-document theory" of which one document is L. This study has concentrated on L. L is defined as that part of the canonical gospel of Luke that is not found in Mk., Q, or the birth-stories

    Do circum-Antarctic species exist in peracarid Amphipoda? A case study in the genus Epimeria Costa, 1851 (Crustacea, Peracarida, Epimeriidae)

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    The amphipod genus Epimeria is species rich in the Southern Ocean and at present eight of its 19 species are reported with circum-Antarctic distributions. For the first time, specimens of epimeriid species from the Antarctic Peninsula, the Weddell Sea and the Ross Sea were analysed using partial COI genes sequences and morphological characters. In total 37 specimens of 14 species of Epimeria and two species of Epimeriella were analysed and the resulting molecular topology checked by critically reviewing taxonomic characters. The genus Epimeriella, genetically grouping within Epimeria is synonymised with the genus Epimeria. Sequences distances between populations of the nominal species Epimeria robusta from the Weddell and Ross Sea led to detailed morphological investigations, resulting in the description of Epimeria robustoides sp. n. from the Weddell Sea. Epimeria robusta Barnard, 1930 from the Ross Sea is redescribed. Sequences of a damaged Epimeria specimen of a species new to science from the lower continental shelf of the eastern Weddell Sea were included. Based on the current study, the hypothesis of circum-Antarctic species' distributions in brooding amphipods proved to be unlikely
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