4,904 research outputs found
There is no subjunctive in English
The western classical tradition identifies three moods: indicative, subjunctive, imperative. Protagoras split the indicative into interrogative and declarative. Palmer 2001, 2003 argues for only two: indicative and subjunctive. Given any of these classifications of mood, English has no category of mood and so has no subjunctive. Instead it has certain clause-types which express hypotheticality and which can be subsumed to the irrealis branch of the apparently universal category realis~irrealis; to which subjunctives, optatives, jussives and the like can also be subsumed
Performance Pay and Stress : An Experimental Study
Acknowledgements: The financial support for this study by the Scottish Economic Society is gratefully acknowledged and appreciated. We are grateful for helpful comments by participants at the 2016 Scottish Economic Society Conference and seminar participants at the University of Aberdeen and the Université Panthéon-Assas as well as Daniel Powell. Help with z-tree programming from Maria Bigoni is also greatly appreciated. All errors remain with the authors.Publisher PD
Project alliancing at National Museum of Australia: Collaborative process
Project alliancing is a new alternative to traditional project delivery systems, especially in the commercial building sector. The Collaborative Process is a theoretical model of people and systems characteristics that are required to reduce the adversarial nature of most construction projects. Although developed separately, both are responses to the same pressures. Project alliancing was just used successfully to complete the National Museum of Australia. This project was analyzed as a case study to determine the extent to which it could be classified as a “collaborative project”. Five key elements of The Collaborative Process were reviewed and numerous examples from the management of this project were cited that support the theoretical recommendations of this model. In the case of this project, significant added value was delivered to the client and many innovations resulted from the collective work of the parties to the contract. It was concluded that project alliances for commercial buildings offer many advantages over traditional project delivery systems, which are related to increasing the levels of collaboration among a project management team
The web-PLOP observation prioritisation system
We present a description of the automated system used by RoboNet to
prioritise follow up observations of microlensing events to search for planets.
The system keeps an up-to-date record of all public data from OGLE and MOA
together with any existing RoboNet data and produces new PSPL fits whenever new
data arrives. It then uses these fits to predict the current or future
magnitudes of events, and selects those to observe which will maximise the
probability of detecting planets for a given telescope and observing time. The
system drives the RoboNet telescopes automatically based on these priorities,
but it is also designed to be used interactively by human observers. The
prioritisation options, such as telescope/instrument parameters, observing
conditions and available time can all be controlled via a web-form, and the
output target list can also be customised and sorted to show the parameters
that the user desires.
The interactive interface is available at http://www.artemis-uk.org/web-PLOP/Comment: 4 pages, Manchester Microlensing Conference, January 2008. To be
published in the proceeding
Production of 21 Ne in depth-profiled olivine from a 54 Ma basalt sequence, Eastern Highlands (37° S), Australia
In this study we investigate the cosmogenic neon component in olivine samples from a vertical profile in order to quantify muogenic 21Ne production in this mineral. Samples were collected from an 11 m thick Eocene basalt profile in the Eastern Highlands of southeastern Australia. An eruption age of 54.15 ± 0.36 Ma (2σ) was determined from 40Ar/39Ar step-heating experiments (n = 6) on three whole-rock samples. A 36Cl profile on the section indicated an apparent steady state erosion rate of 4.7 ± 0.5 m Ma−1. The eruption age was used to calculate in situ produced radiogenic 4He and nucleogenic 3He and 21Ne concentrations in olivine. Olivine mineral separates (n = 4), extracted from the upper two metres of the studied profile, reveal cosmogenic 21Ne concentrations that attenuate exponentially with depth. However, olivine (Fo68) extracted from below 2 m does not contain discernible 21Ne aside from magmatic and nucleogenic components, with the exception of one sample that apparently contained equal proportions of nucleogenic and muogenic neon. Modelling results suggest a muogenic neon sea-level high-latitude production rate of 0.02 ± 0.04 to 0.9 ± 1.3 atoms g−1 a−1 (1σ), or <2.5% of spallogenic cosmogenic 21Ne production at Earth’s surface. These data support a key implicit assumption in the literature that accumulation of muogenic 21Ne in olivine in surface samples is likely to be negligible/minimal compared to spallogenic 21Ne
“Their Maxim is Vestigia nulla restrorsum”:Scottish Return Migration and Capital Repatriation from England, 1603-c.1760
The return of migrants to their places of origin has been subject to significant theoretical enquiry in recent decades, but testing the resulting modelling against historical data has so far been limited and reliant mainly on nineteenth- and twentieth-century evidence. This article builds upon these foundations by offering detailed analysis of the process of return migration as it affected Scottish migrants to England in the seventeenth and early eighteenth centuries. Utilising theoretical insights from social science and a broad range of empirical evidence to explore the mechanisms and motivations of return, the article utilises a six-category typology, involving: circular, self-improving, retirement, employment and failed returnees, as well as those returning from forced exile. Nevertheless, while these individual narratives provide a qualitative insight to returnees, their stories remain very much a minority experience since Scottish migrants were more likely to settle permanently in England than to enact returning strategies. Indeed, the relative rarity of return migrants underlines the relative openness of English society to Scottish incomers and the ease with which early modern Scots assimilated to the Anglicised idiom of the emergent British state
Influence of optical aberrations in an atomic gyroscope
In atom interferometry based on light-induced diffraction, the optical
aberrations of the laser beam splitters are a dominant source of noise and
systematic effect. In an atomic gyroscope, this effect is dramatically reduced
by the use of two atomic sources. But it remains critical while coupled to
fluctuations of atomic trajectories, and appears as a main source of noise to
the long term stability. Therefore we measure these contributions in our setup,
using cold Cesium atoms and stimulated Raman transitions
Maternal obesity during pregnancy and premature mortality from cardiovascular event in adult offspring : follow-up of 1 323 275 person years
Peer reviewedPublisher PD
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Metrics for linking emissions of gases and aerosols to global precipitation changes
Recent advances in understanding have made it possible to relate global precipitation changes directly to emissions of particular gases and aerosols that influence climate. Using these advances, new indices are developed here called the Global Precipitation-change Potential for pulse (GPP_P) and sustained (GPP_S) emissions, which measure the precipitation change per unit mass of emissions. The GPP can be used as a metric to compare the effects of different emissions. This is akin to the global warming potential (GWP) and the global temperature-change potential (GTP) which are used to place emissions on a common scale. Hence the GPP provides an additional perspective of the relative or absolute effects of emissions. It is however recognised that precipitation changes are predicted to be highly variable in size and sign between different regions and this limits the usefulness of a purely global metric.
The GPP_P and GPP_S formulation consists of two terms, one dependent on the surface temperature change and the other dependent on the atmospheric component of the radiative forcing. For some forcing agents, and notably for CO2, these two terms oppose each other – as the forcing and temperature perturbations have different
timescales, even the sign of the absolute GPP_P and GPP_S varies with time, and the opposing terms can make values
sensitive to uncertainties in input parameters. This makes the choice of CO2 as a reference gas problematic,
especially for the GPP_S at time horizons less than about 60 years. In addition, few studies have presented results
for the surface/atmosphere partitioning of different forcings, leading to more uncertainty in quantifying the GPP than the GWP or GTP. Values of the GPP_P and GPP_S for five long- and short-lived forcing agents (CO2, CH4, N2O, sulphate and black carbon – BC) are presented, using illustrative values of required parameters. The resulting precipitation changes are given as the change at a specific time horizon (and hence they are end-point metrics) but it is noted that the GPPS can also be interpreted as the time-integrated effect of a pulse emission. Using CO2 as a references gas, the GPP_P and GPP_S for the non-CO2 species are larger than the corresponding GTP values. For BC emissions, the atmospheric forcing is sufficiently strong that the GPP_S is opposite in sign to the GTP_S. The sensitivity of these values to a number of input parameters is explored.
The GPP can also be used to evaluate the contribution of different emissions to precipitation change during
or after a period of emissions. As an illustration, the precipitation changes resulting from emissions in 2008
(using the GPP_P) and emissions sustained at 2008 levels (using the GPP_S) are presented. These indicate that for
periods of 20 years (after the 2008 emissions) and 50 years (for sustained emissions at 2008 levels) methane is
the dominant driver of positive precipitation changes due to those emissions. For sustained emissions, the sum
of the effect of the five species included here does not become positive until after 50 years, by which time the
global surface temperature increase exceeds 1 K
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