41 research outputs found

    Dissipation and noise in adiabatic quantum pumps

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    We investigate the distribution function, the heat flow and the noise properties of an adiabatic quantum pump for an arbitrary relation of pump frequency ω\omega and temperature. To achieve this we start with the scattering matrix approach for ac-transport. This approach leads to expressions for the quantities of interest in terms of the side bands of particles exiting the pump. The side bands correspond to particles which have gained or lost a modulation quantum ω\hbar \omega. We find that our results for the pump current, the heat flow and the noise can all be expressed in terms of a parametric emissivity matrix. In particular we find that the current cross-correlations of a multiterminal pump are directly related a to a non-diagonal element of the parametric emissivity matrix. The approach allows a description of the quantum statistical correlation properties (noise) of an adiabatic quantum pump

    A Motivational Analysis of Academic Life in College

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    Intelligent playgrounds: Measuring and affecting social inclusion in schools

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    Equal access to education has recently been declared by the United Nations a basic human right [14]. However, despite the substantial attention given to inclusive education in recent years, researchers have criticized a lack of empirical evidence on how exclusion is manifested in student behavior. Recent development in sensor technology and social network analysis techniques can provide a new perspective to the impact of educational practices through the measurement of students' social interactions. In this paper we outline our research agenda that aims at a) measuring the current stand as well as the impact of inclusive educational interventions using sensor technology and sociometric analysis, and b) challenging pupils' perceptions of diversity with the aim of eliminating discriminatory behaviors in primary schools using persuasive games

    'Laddishness' as a Self-worth Protection Strategy.

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    'Laddishness' is central to the current discourse on boys' 'underachievement', with 'laddish' behaviours being seen by many people as an impediment to the progress of some boys in school. The article attempts to demonstrate how self-worth theory may complement and extend our understandings of 'laddish' behaviours, which are currently informed by theories of masculinities. More specifically, it is argued that it may be the case that for some secondary school boys, the construct of 'laddishness' acts as a self-worth protection strategy - protecting self-worth both from the implications of a lack of ability and from the implications of being seen to be feminine. The argument is developed by comparing characteristics of key self-worth protection or self-handicapping strategies with the behaviours reported by teachers, pupils and researchers to be characteristics of 'laddish' behaviour
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