3,804 research outputs found

    A Strategy for Peace

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    Alien Registration- Fitch, Trecia B. (Grand Lake Stream, Washington County)

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    https://digitalmaine.com/alien_docs/1071/thumbnail.jp

    Do red deer hinds prefer stags that produce harsh roars in mate choice contexts?

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    Red deer stags give two types of roars during the breeding season, termed ‘common’ and ‘harsh’ roars. This study tested the hypothesis that the characteristic spectro-temporal structure of male harsh roars functions to directly attract females towards male callers during the breeding season. The results show that oestrous hinds look for longer towards speakers broadcasting sequences containing harsh roars, but do not preferentially approach or spend more time in close proximity to speakers broadcasting harsh roars over those broadcasting only common roars. While these observations confirm that the specific acoustic structure of male harsh roars functions to draw the attention of hinds, they are not consistent with the notion that these calls have an immediate impact on mate choice decisions by stimulating oestrous hinds to move towards male callers. Consequently, we suggest that intersexual selection through female mate choice is unlikely to be a major factor driving the evolution of male red deer harsh roars

    Auctions for the support of renewable energy in the UK: updated results and lessons learnt

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    This is the final version. Available from AURES II via the link in this recordBackground to this study. This report serves to restate and update the findings of AURES report D4.1-UK published in March 2016 (Fitch-Roy and Woodman 2016)1 . While the fundamental design of the UK auctions system remains largely unchanged, substantial shifts in the policy context and the additional experience and data from two further auction processes (one completed, another in progress at the time of writing) warrant an updated evaluation and report. The UK has been a frontrunner in the use of RES auctions. From early experiences with the Non Fossil-Fuel Obligation (NFFO) auctions in the 1990s to the current auction system, first announced in 2011, the use of competitive allocation mechanisms has been central to the UK’s approach to supporting new renewable electricity generation projects. However, the use and design of renewable auctions remain a source of policy debate and discussion in the UK. For example, the potential for a combination of auction dynamics and the application of a cap on the volume of ‘fuelled’ renewable technologies led to higher than necessary support costs being awarded to some projects has been the subject of an enquiry by the national audit office (NAO 2018). This remainder of this report adopts the following structure: Section 2 provides an updated overview of the UK electricity sector Section 3 outlines the key features of the UK RES auction system, including recent rule changes Section 4 updates our earlier evaluation of the programme in light of recent auctions Section 5 concludesEuropean Commissio

    Heralded Two-Photon Entanglement from Probabilistic Quantum Logic Operations on Multiple Parametric Down-Conversion Sources

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    An ideal controlled-NOT gate followed by projective measurements can be used to identify specific Bell states of its two input qubits. When the input qubits are each members of independent Bell states, these projective measurements can be used to swap the post-selected entanglement onto the remaining two qubits. Here we apply this strategy to produce heralded two-photon polarization entanglement using Bell states that originate from independent parametric down-conversion sources, and a particular probabilistic controlled-NOT gate that is constructed from linear optical elements. The resulting implementation is closely related to an earlier proposal by Sliwa and Banaszek [quant-ph/0207117], and can be intuitively understood in terms of familiar quantum information protocols. The possibility of producing a ``pseudo-demand'' source of two-photon entanglement by storing and releasing these heralded pairs from independent cyclical quantum memory devices is also discussed.Comment: 5 pages, 4 figures; submitted to IEEE Journal of Selected Topics in Quantum Electronics, special issue on "Quantum Internet Technologies

    Defining incumbency: considering the UK heat sector

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    This is the final version of the article. Available from UKERC via the link in this record.This is working paper 1/3 from the Heat, Incumbency and Transformations (HIT) project.Incumbency is frequently considered as a barrier to the transformation of unsustainable socio-technical systems such as energy systems. However, despite wide use of the term, ‘incumbency’ has never been fully or adequately defined within the sustainable transitions literature. This working paper considers the use and meaning of the term incumbency in relation to sustainable transformations, specifically in relation to the UK’s heat system. It takes ideas of incumbency from other disciplines including economics, politics and innovation. Synthesising these literatures, the paper proposes a number of characteristics of incumbency. Finally we propose a definition of incumbency in relation to sustainability transformations, which suggests that incumbents are actors already present in a specific socio-technical system, who are likely to be involved with unsustainable practices, and who possess the capacity to affect system change.UKERC is funded by The Research Councils UK Energy Programme

    Policy instrument supply and demand: how the renewable electricity auction took over the world

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    This is the final version. Available on open access from Cogitatio Press via the DOI in this recordThe selection and design of renewable electricity support instruments is an important part of EU energy policy and central to the governance of the Energy Union. In 2014, the European Commission published updated guidelines for state aid that effectively mandate the EU-wide implementation of auctions for allocating revenue support to commercial scale renewable electricity generation. This article argues that the RES auction’s rapid ascent towards dominance is explained by a coincidence of an activist interpretation of EU state aid law creating demand for knowledge about the instrument and the emergence of a ready source of supply from a burgeoning community of a RES auction specialists and experts. Knowledge gained through EU-wide implementation of auctions further adds to supply of auctions expertise among the community. The implications of positive feedback between instrument demand and the growing supply of knowledge about an instrument reinforces the importance of critical engagement between policymakers and policy experts.This research was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) [1402887] and the AURES and AURES II projects funded by the European Commission’s Horizon 2020 programme [646172] and [817619
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