401 research outputs found

    The theory and practice of free trade

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    David M. Gould, Roy J. Ruffin, and Graeme L. Woodbridge argue that free trade is supported both by economic principles and evidence from countries that have followed open market policies. The authors demonstrate that the countries whose markets are the most open have higher real output and economic growth. ; The authors show that many arguments for protection obscure the benefits countries derive from international trade. High-wage countries not only can compete with low-wage countries, they dominate the world economic stage. Trade deficits or surpluses are not inherently bad or good, but rather reflect a country's consumption and investment decisions over time. Moreover, there is no evidence to suggest that imports cause systematic unemployment or that exports create systematic employment. The authors explain why industrial policies and protection designed to promote particular industries usually backfire; trade policies usually reflect the lobbying efforts of the most vocal and powerful self-interest groups.Free trade

    XXXVII. Turbines

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    Temperature Effects on Host-Seeking by Larval American Dog Ticks, Dermacentor variabilis (Say)

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    Author Institution: Associate Professor, Department of Entomology, The Ohio State UniversityHost-seeking activity of larval American dog ticks was measured by determining the proportion of unengorged larvae attached to white-footed mice, Peromyscus leucopus (Rafinesque), trapped overnight in Columbus, Ohio, in 1983. A positive linear correlation was found between larval host-seeking activity and evening ambient temperature. No similar correlation was found between this activity and insolation, relative humidity, average daily temperature, or ambient temperatures taken at other times of the day or night

    An analysis of project high water data

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    Optical and radio frequency electromagnetic observations of high water release in ionosphere and atmospheric turbulence following liquid release in spac

    Introduction: symbiosis as a living evolving critique

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    Different species, interacting in a symbiotic fashion, living together over a prolonged period of time, eventually co-evolving into new species: this vision of the biological phenomenon of symbiosis has created a strong impression—both of symbiosis as a metaphor and a material reality—of species in an intimate relationship together, cooperating in spite of differences, of becoming something else and transgressing boundaries. This idea has turned the concept of symbiosis, in its many guises and definitions, into a breeding ground for a posthuman, biologically and ecologically informed critique. Less focused on the biological process of symbiosis as such, our focus in Symbiosis: Ecologies, Assemblages and Evolution is more on how symbiosis can be used as a means to argue for an alternative worldview and even a better world...

    VEGETATION AND LAND-USE CHANGE IN NORTHERN EUROPE DURING LATE ANTIQUITY: A REGIONAL-SCALE POLLEN-BASED RECONSTRUCTION

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    This chapter presents an overview of land cover and land use change in northern Europe, particularly during Late Antiquity (ca. 2nd-8th c. A.D.) based on fossil pollen preserved in sediments. We have transformed fossil pollen datasets from 462 sites into eight major land-cover classes using the pseudobiomization method (PBM). Through using pollen-vegetation evidence, we show that north-central Europe, lying outside the Roman frontier (the so-called ‘Barbaricum’ region), remained predominantly forested until Medieval times, with the main clearance phase only starting from ca. A.D. 750. This stands in contrast to north-west Europe, both inside (France/England) and outside (Scotland/Ireland) the Roman imperial frontier; here a majority of forested land was already cleared prior to antiquity. The implications of this are that Roman expansion into the periphery of the empire largely took over existing intensive agrarian regions in the case of ‘Gaul’ (France) and ‘Britannia’ (England and Wales). Pre-existing land-use systems and levels of landscape openness may have played a role in directing the expansion of the Roman empire northwards into Gaul and Britannia, rather than eastwards into Germania. After the period of Roman occupation, partial reforestation is evident in some areas

    The Chernobyl Tissue Bank - A Repository for Biomaterial and Data Used in Integrative and Systems Biology Modeling the Human Response to Radiation

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    The only unequivocal radiological effect of the Chernobyl accident on human health is the increase in thyroid cancer in those exposed in childhood or early adolescence. In response to the scientific interest in studying the molecular biology of thyroid cancer post Chernobyl, the Chernobyl Tissue Bank (CTB: www.chernobyltissuebank.com) was established in 1998. Thus far it is has collected biological samples from 3,861 individuals, and provided 27 research projects with 11,254 samples. The CTB was designed from its outset as a resource to promote the integration of research and clinical data to facilitate a systems biology approach to radiation related thyroid cancer. The project has therefore developed as a multidisciplinary collaboration between clinicians, dosimetrists, molecular biologists and bioinformaticians and serves as a paradigm for tissue banking in the omics era

    Tracking the hydro-climatic signal from lake to sediment: a field study from central Turkey

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    Palaeo-hydrological interpretations of lake sediment proxies can benefit from a robust understanding of the modern lake environment. In this study, we use Nar GölĂŒ, a non-outlet, monomictic maar lake in central Turkey, as a field site for a natural experiment using observations and measurements over a 17-year monitoring period (1997–2014). We compare lake water and sediment trap data to isotopic, chemical and biotic proxies preserved in its varved sediments. Nar GölĂŒ underwent a 3 m lake-level fall between 2000 and 2010. ÎŽ18Olakewater is correlated with this lake-level fall, responding to the change in water balance. Endogenic carbonate is shown to precipitate in isotopic equilibrium with lake water and there is a strong relationship between ÎŽ18Olakewater and ÎŽ18Ocarbonate, which suggests the water balance signal is accurately recorded in the sediment isotope record. Over the same period, sedimentary diatom assemblages also responded, and conductivity inferred from diatoms showed a rise. Shifts in carbonate mineralogy and elemental chemistry in the sediment record through this decade were also recorded. Intra-annual changes in ÎŽ18Olakewater and lake water chemistry are used to demonstrate the seasonal variability of the system and the influence this may have on the interpretation of ÎŽ18Ocarbonate. We use these relationships to help interpret the sedimentary record of changing lake hydrology over the last 1725 years. Nar GölĂŒ has provided an opportunity to test critically the chain of connection from present to past, and its sedimentary record offers an archive of decadal- to centennial-scale hydro-climatic chang
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