1,897 research outputs found

    The 2011 English ‘Riots’: Prosecutorial Zeal and Judicial Abandon

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    Much attention has focussed on the severity of the sentences imposed following the 2011 ‘summer rioting’ in England. The Court of Appeal confirmed that participation in a collective outbreak of disorder takes offending outside the sentencing guidelines. The position for sentencing riot-related offending in future is unclear, however, as the Court gave no indication of how to calibrate this departure, and the Sentencing Council has made offending during public disorder an aggravating factor only in its burglary guideline. This article explores new empirical evidence regarding the sentences imposed in Manchester, together with national Ministry of Justice data, to demonstrate for the first time how this ‘uplift’ effect was a feature throughout the criminal process, from arrest to sentence

    Water resource problems of energy projects in the Colorado River Basin

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    The successful development of western coal and oil shale deposits is dependent, to a significant degree, on the availability of adequate water supplies. EQL is involved in a study of the aggregate effects of various energy activities in the upper Colorado River Basin on downstream water quantity and quality. These activities will tend to reduce the available water in the river, and could increase its salinity, which is already so high as to interfere with downstream domestic and agricultural use

    Capital Gains and the Economic Theory of Corporate Finance

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    The dependence of one agent’s actions upon those of another constitutes a fundamental departure point for much of received economic theory. Apart from a deterministic setting, the presence of uncertainty implies a dependence on the probable actions of other agents; that is, the ultimate behavior of an individual is to a certain extent a consequence of his beliefs concerning the behavior of other agents. While the difficulty associated with formulating even crude conjectures of this nature is overwhelming, actual informational demands are even greater as from the dependence of agent A’s actions on his beliefs concerning agent B’s actions, it follows directly that agent B’s actions are dependent on his beliefs concerning agent A’s beliefs relative to his (agent B’s) action as well, as infinitum

    Melt-induced buoyancy may explain the elevated rift-rapid sag paradox during breakup of continental plates

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    The division of the earth’s surface into continents and oceans is a consequence of plate tectonics but a geological paradox exists at continent-ocean boundaries. Continental plate is thicker and lighter than oceanic plate, floating higher on the mantle asthenosphere, but it can rift apart by thinning and heating to form new oceans. In theory, continental plate subsides in proportion to the amount it is thinned and subsequently by the rate it cools down. However, seismic and borehole data from continental margins like the Atlantic show that the upper surface of many plates remains close to sea-level during rifting, inconsistent with its thickness, and subsides after breakup more rapidly than cooling predicts. Here we use numerical models to investigate the origin and nature of this puzzling behaviour with data from the Kwanza Basin, offshore Angola. We explore an idea where the continental plate is made increasingly buoyant during rifting by melt produced and trapped in the asthenosphere. Using finite element simulation, we demonstrate that partially molten asthenosphere combined with other mantle processes can counteract the subsidence effect of thinning plate, keeping it elevated by 2-3 km until breakup. Rapid subsidence occurs after breakup when melt is lost to the embryonic ocean ridge

    Optical Communications Channel Combiner

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    NASA has identified deep-space optical communications links as an integral part of a unified space communication network in order to provide data rates in excess of 100 Mb/s. The distances and limited power inherent in a deep-space optical downlink necessitate the use of photon-counting detectors and a power-efficient modulation such as pulse position modulation (PPM). For the output of each photodetector, whether from a separate telescope or a portion of the detection area, a communication receiver estimates a log-likelihood ratio for each PPM slot. To realize the full effective aperture of these receivers, their outputs must be combined prior to information decoding. A channel combiner was developed to synchronize the log-likelihood ratio (LLR) sequences of multiple receivers, and then combines these into a single LLR sequence for information decoding. The channel combiner synchronizes the LLR sequences of up to three receivers and then combines these into a single LLR sequence for output. The channel combiner has three channel inputs, each of which takes as input a sequence of four-bit LLRs for each PPM slot in a codeword via a XAUI 10 Gb/s quad optical fiber interface. The cross-correlation between the channels LLR time series are calculated and used to synchronize the sequences prior to combining. The output of the channel combiner is a sequence of four-bit LLRs for each PPM slot in a codeword via a XAUI 10 Gb/s quad optical fiber interface. The unit is controlled through a 1 Gb/s Ethernet UDP/IP interface. A deep-space optical communication link has not yet been demonstrated. This ground-station channel combiner was developed to demonstrate this capability and is unique in its ability to process such a signal

    Numerical experiments on short-term meteorological effects on solar variability

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    A set of numerical experiments was conducted to test the short-range sensitivity of a large atmospheric general circulation model to changes in solar constant and ozone amount. On the basis of the results of 12-day sets of integrations with very large variations in these parameters, it is concluded that realistic variations would produce insignificant meteorological effects. Any causal relationships between solar variability and weather, for time scales of two weeks or less, rely upon changes in parameters other than solar constant or ozone amounts, or upon mechanisms not yet incorporated in the model
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