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Commerce by a Frozen Sea
Commerce by a Frozen Sea is a cross-cultural study of a century of contact between North American native peoples and Europeans. During the eighteenth century, the natives of the Hudson Bay lowlands and their European trading partners were brought together by an increasingly popular trade in furs, destined for the hat and fur markets of Europe. Native Americans were the sole trappers of furs, which they traded to English and French merchants. The trade gave Native Americans access to new European technologies that were integrated into Indian lifeways. What emerges from this detailed exploration is a story of two equal partners involved in a mutually beneficial trade. Drawing on more than seve...
English Trade and Adventure to Russia in the Early Modern Era
In English Trade and Adventure to Russia in the Early Modern Era, Maria Salomon Arel revisits Anglo-Russian trade in first half of the seventeenth century. Drawing on largely neglected Russian and English sources, she reconstructs the history of the Muscovy Company in a period of expanding opportunities for foreigners in Russia and of tightening links between regional markets across the globe. In her strongly revisionist telling, the Company successfully rebuilt in the aftermath of the devastating Time of Troubles, securing its uniquely privileged position in the Russian market at the hands of a newly installed tsar and Romanov dynasty keen to revive the country’s decimated economy through...
Unequal Sisters
Unequal Sisters has become a beloved and classic reader, providing an unparalleled resource for understanding women’s history in the United States today. First published in 1990, the book revolutionized the field with its broad multicultural approach, emphasizing feminist perspectives on race, ethnicity, region, and sexuality, and covering the colonial period to the present day. Now in its fifth edition, the book presents an even wider variety of women’s experiences. This new edition explores the connections between the past and the present and highlights the analysis of queerness, transgender identity, disability, the rise of the carceral state, and the bureaucratization and militarizat...
ATLAS B-jet Identification Performance and Efficiency Measurement with Tt[over-bar] Events in Pp Collisions at [square Root]s
Abstract: The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt ̄ events. The topology of the t→Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb−1, were collected in proton-proton collisions during the years 2015-2017 at a centre-of-mass energy s√= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum
Constraints on Mediator-based Dark Matter and Scalar Dark Energy Models Using [square Roots]s
Abstract: Constraints on selected mediator-based dark matter models and a scalar dark energy model using up to 37 fb−1s√ = 13 TeV pp collision data collected by the ATLAS detector at the LHC during 2015-2016 are summarised in this paper. The results of experimental searches in a variety of final states are interpreted in terms of a set of spin-1 and spin-0 single-mediator dark matter simplified models and a second set of models involving an extended Higgs sector plus an additional vector or pseudo-scalar mediator. The searches considered in this paper constrain spin-1 leptophobic and leptophilic mediators, spin-0 colour-neutral and colour-charged mediators and vector or pseudo-scalar mediators embedded in extended Higgs sector models. In this case, also s√ = 8 TeV pp collision data are used for the interpretation of the results. The results are also interpreted for the first time in terms of light scalar particles that could contribute to the accelerating expansion of the universe (dark energy)
