114 research outputs found

    Reason, Morality, and Skill

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    Some economists argue that modern industrial societies must respond to ecological challenges by learning to live with diminishing economic growth. Yet it also seems that low growth societies are doomed to struggle with problems of social instability caused by economic recession, unemployment and a decline in social entitlements. In “Reason, Morality and Skill” John Stopford draws on Ancient Greek economic thought, including Aristotle’s views on the natural limitation of wealth, to discuss the problem of human flourishing in ecologically challenged societies. Economic capability theorists, influenced by the work of Sen and Nussbaum, have recently argued that the transition from a growth driven economy focused on consumption to a stable low growth economy requires us to redefine prosperity as capability development “within limits”. Stopford argues that to understand prosperity in this way we need to reexamine the role of skill in the development of capabilities. The marginalization of skill has become a systematic feature of modern industrial and consumer societies. Yet certain kinds of skill, exemplified in the work of the autonomously productive craftsman, are necessary to the development of the bounded capabilities that low growth societies need to foster

    Discrete mode laser diodes with ultra narrow linewidth emission <3kHz

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    Ex-facet, free-running ultra-low linewidth (<3 kHz), single mode laser emission is demonstrated using low cost, regrowth-free ridge waveguide discrete mode Fabry-Perot laser diode chips

    Kaposi’s Sarcoma-Associated Herpesvirus Increases PD-L1 and Proinflammatory Cytokine Expression in Human Monocytes

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    ABSTRACT Kaposi’s sarcoma-associated herpesvirus (KSHV) is associated with the human malignancy Kaposi’s sarcoma and the lymphoproliferative disorders primary effusion lymphoma and multicentric Castleman’s disease. KSHV establishes lytic infection of monocytes in vivo , which may represent an important cellular reservoir during KS disease progression. KS tumors consist of latently infected endothelial cells; however, lytic phase gene products are important for KS onset. Early KS lesion progression is driven by proinflammatory cytokines supplied by immune cell infiltrates including T cells and monocytes. KSHV-infected monocytes may supply the lytic viral products and the inflammatory milieu conducive to KS tumor progression. To establish successful infection, KSHV extensively modulates the host immune system. KSHV antigens activate both innate and adaptive immune responses including KSHV-specific T cells, but lifelong infection is still established. Programmed death ligand 1 (PD-L1) is a prosurvival cell surface protein that suppresses T-cell-mediated killing. PD-L1 is variably present on various tumor cells and is a targetable marker for cancer treatment. We show that KSHV infection of human monocytes increases PD-L1 expression and transcription in a dose-dependent manner. We also saw evidence of lytic gene expression in the KSHV-infected monocytes. Intact KSHV is needed for full PD-L1 response in human monocytes. KSHV induces a general proinflammatory cytokine milieu including interleukins 1α, 1ÎČ, and 6, which have been implicated in early KS lesion progression. KSHV-mediated PD-L1 increase may represent a novel mechanism of KSHV-mediated immune modulation to allow for virus survival and eventually malignant progression. IMPORTANCE KSHV is the etiologic agent of Kaposi’s sarcoma and the lymphoproliferative disorders primary effusion lymphoma and multicentric Castleman’s disease. Programmed death ligand 1 (PD-L1) is an immunosuppressive cell surface marker that inhibits T cell activation. We report that KSHV infection of primary human monocytes upregulates PD-L1 transcription and protein expression. Analysis of the cytokine and chemokine milieu following KSHV infection of monocytes revealed that KSHV induces interleukins 1α, 1ÎČ, and 6, all of which have been implicated in KS development. Our work has identified another potential immune evasion strategy for KSHV and a potential target for immunotherapy of KSHV-derived disease

    Modulation of the cGAS-STING DNA sensing pathway by gammaherpesviruses

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    Kaposi’s sarcoma-associated herpesvirus (KSHV) is a DNA virus that is linked to several human malignancies. The cGMP-AMP synthase (cGAS) and stimulator of interferon genes (STING) pathway is able to detect KSHV during primary infection and regulates the reactivation of KSHV from latency. We screened KSHV proteins for their ability to inhibit this pathway and block IFN-ÎČ activation. One KSHV protein, vIRF1, inhibited this pathway by preventing STING from interacting with TBK1 and inhibiting STING’s phosphorylation and concomitant activation. Moreover, depletion of vIRF1 in the context of KSHV infection prevented efficient viral reactivation and replication, and increased the host IFN response to KSHV. Collectively, our results demonstrate that the modulation of this pathway is important for viral transmission and the lifelong persistence of gammaherpesviruses in the human population

    Are Foreign Firms Privileged By Their Host Governments? Evidence From The 2000 World Business Environment Survey

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    Using the data from World Business Environment Survey (WBES) on over 10,000 firms across eighty one countries, this paper finds preliminary evidence that foreign firms enjoy significant regulatory advantages - as perceived by the firms themselves - over domestic firms. The findings on regulatory advantages of foreign firms hold with a variety of alternative measures of regulations and with or without firm- and country-level attributes and industry and country controls. There is also evidence that foreign firms' regulatory advantages are especially substantial vis-a-vis the politically weak domestic firms. Furthermore, the regulatory advantages of foreign firms appear stronger in corrupt countries than in non-corrupt countries

    Co-ordinated Airborne Studies in the Tropics (CAST)

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    This is the author accepted manuscript. The final version is available from the American Meteorological Society via http://dx.doi.org/10.1175/BAMS-D-14-00290.1The Co-ordinated Airborne Studies in the Tropics (CAST) project is studying the chemical composition of the atmosphere in the Tropical Warm Pool region to improve understanding of trace gas transport in convection. The main field activities of the CAST (Co-ordinated Airborne Studies in the Tropics) campaign took place in the West Pacific in January/February 2014. The field campaign was based in Guam (13.5°N, 144.8°E) using the UK FAAM BAe-146 atmospheric research aircraft and was coordinated with the ATTREX project with the unmanned Global Hawk and the CONTRAST campaign with the Gulfstream V aircraft. Together, the three aircraft were able to make detailed measurements of atmospheric structure and composition from the ocean surface to 20 km. These measurements are providing new information about the processes influencing halogen and ozone levels in the tropical West Pacific as well as the importance of trace gas transport in convection for the upper troposphere and stratosphere. The FAAM aircraft made a total of 25 flights between 1°S-14°N and 130°-155°E. It was used to sample at altitudes below 8 km with much of the time spent in the marine boundary layer. It measured a range of chemical species, and sampled extensively within the region of main inflow into the strong West Pacific convection. The CAST team also made ground-based measurements of a number of species (including daily ozonesondes) at the Atmospheric Radiation Measurement program site on Manus Island, Papua New Guinea (2.1°S, 147.4°E). This article presents an overview of the CAST project focussing on the design and operation of the West Pacific experiment. It additionally discusses some new developments in CAST, including flights of new instruments on the Global Hawk in February/March 2015.CAST is funded by NERC and STFC, with grant NE/ I030054/1 (lead award), NE/J006262/1, NE/J006238/1, NE/J006181/1, NE/J006211/1, NE/J006061/1, NE/J006157/1, NE/J006203/1, NE/J00619X/1, and NE/J006173/1. N. R. P. Harris was supported by a NERC Advanced Research Fellowship (NE/G014655/1). P. I. Palmer acknowledges his Royal Society Wolfson Research Merit Award. The BAe-146-301 Atmospheric Research Aircraft is flown by Directflight Ltd and managed by the Facility for Airborne Atmospheric Measurements, which is a joint entity of the Natural Environment Research Council and the Met Office. The authors thank the staff at FAAM, Directflight and Avalon Aero who worked so hard toward the success of the aircraft deployment in Guam, especially for their untiring efforts when spending an unforeseen 9 days in Chuuk. We thank the local staff at Chuuk and Palau, as well as the authorities in the Federated States of Micronesia for their help in facilitating our research flights. Special thanks go to the personnel associated with the ARM facility at Manus, Papua New Guinea without whose help the ground-based measurements would not have been possible. Thanks to the British Atmospheric Data Centre (BADC) for hosting our data and the NCAS Atmospheric Measurement Facility for providing the radiosonde and ground-based ozone equipment. Chlorophyll-a data used in Figure 1 were extracted using the Giovanni online data system, maintained by the NASA GES DISC. We also acknowledge the MODIS mission scientists and associated NASA personnel for the production of this data set. Finally we thank many individual associated with the ATTREX and CONTRAST campaigns for their help in the logistical planning, and we would like to single out Jim Bresch for his excellent and freely provided meteorological advice

    Moral Realism and Political Decisions. Practical Rationality in Contemporary Public Contexts

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    The challenge of realism is one of the common features of current philosophical debates, across different cultural traditions, and in many areas of investigation (epistemology, metaphysics, ethics, aesthetics, theory of action, etc.). The implications of realism for political philosophy and political practice, though, are just starting to become an object of systematic discussions. Such implications, however, are significant, since the area of politics is contiguous with that of ethics and action, for example. This volume intends to contribute to debates on the relevance of realism – especially moral realism – for politics. The essays included in the collection address a number of related issues, ranging from foundational problems of realism in ethics, action theory and politics, to questions about pragmatics, to difficulties in political theory, and to political hindrances related to economics and legal theory. The common focus of all essays is the relevance of realism for a conception of practical rationality in political contexts.Die Herausforderungen, vor die uns der Realismus stellt, sind in aktuellen philosophischen Debatten gegenwĂ€rtig und sie machen sich durch unterschiedliche kulturelle Traditionen und viele Untersuchungsbereiche (Erkenntnistheorie, Metaphysik, Ethik, Ästhetik, Handlungstheorie, etc.) hindurch bemerkbar. Die Auswirkungen des Realismus auf die Politische Philosophie und die politische Praxis sind jedoch erst seit kurzem Gegenstand systematischer Diskussionen, obwohl sie von Bedeutung sind, denn letztlich steht der Bereich der Politik immer in einem Zusammenhang mit Fragen der Ethik und der Handlung. Dieser Band möchte einen Beitrag zu den Debatten ĂŒber die Relevanz des Realismus fĂŒr die Politik leisten und hat dabei insbesondere den moralischen Realismus im Blick. Die hier versammelten AufsĂ€tze enthalten eine Reihe von Auseinandersetzungen mit damit zusammenhĂ€ngenden Problemstellungen, die von grundlegenden Problemen des Realismus in der Ethik, Handlungstheorie und Politik, Fragen zur Pragmatik, ĂŒber die Schwierigkeiten der Politischen Theorie, bis hin zu politischen Hindernissen fĂŒr Wirtschaft und Recht reichen. Der gemeinsame Fokus aller AufsĂ€tze liegt dabei in der Betrachtung der Relevanz eines Realismus‘ fĂŒr eine Konzeption einer praktischen Vernunft im politischen Kontext
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