Decoherence in quantum dots due to real and virtual transitions: a non-perturbative calculation

We investigate theoretically acoustic phonon induced decoherence in quantum dots. We calculate the dephasing of fundamental (interband or intraband) optical transitions due to real and virtual transitions with higher energy levels. Up to two acoustic phonon processes (absorption and/or emission) are taken into account simultaneously in a non-perturbative manner. An analytic expression of acoustic phonon induced broadening is given as a function of the electron-phonon matrix elements and is physically interpreted. The theory is applied to the dephasing of intersublevel transitions in self-assembled quantum dots.Comment: 8 pages, 4 figure

Multi-scale analysis of timber framed structures filled with earth and stones

This paper deals with the seismic analysis of timber framed houses filled by stones and earth mortar using a multi-scale approach going from the cell to the wall and then to the house. At the scale of the elementary cells, experimental results allow fitting the parameters of a new versatile hysteretic law presented herein through the definition of a macro-element. Then, at the scale of wall, the numerical simulations are able to predict its behavior under quasi-static cyclic loading and is compared to experimental results allowing validating the macro-element model

How Should Lawyers and Legal Profession Adapt?

Of all the love affairs with which the people of this world have been blessed or afflicted, that between public inquiries and the media is certainly one of the strangest. I have been in and about the law for over 40 years and in that time I say immodestly I have pleaded, what to me were, some very interesting cases and I have in the last 14 years had occasion to sit in judgment on some, not only interesting but, perhaps important cases. But I know perfectly well that when the time comes to take my departure, if I am mentioned at all in the obituary columns, it will be only for the period spent investigating some overdosages of digoxin at the Hospital for Sick Children in Toronto with perhaps a line about playing with derailed trains in Mississauga

The effect of N-3 on N-2 repetition costs in task switching

N-2 task repetition cost is a response time and error cost returning to a task recently performed after one intervening trial (i.e., an ABA task sequence) compared with returning to a task not recently performed (i.e., a CBA task sequence). This cost is considered a robust measure of inhibitory control during task switching. The present article reports a novel sequential effect of n-2 task repetitions when trial n-3 is taken into consideration. In particular, performance is better in trials preceded by an n-2 repetition than in trials preceded by an n-2 switch. That is, performance is better in BABA sequences (where trial n-1 was an n-2 repetition) than in CABA sequences (where trial n-1 was an n-2 switch). Likewise, performance is better in BCBA (where trial n-1 was an n-2 repetition) than in ACBA or DCBA sequences (where trial n-1 was an n-2 switch). Evidence for this new n-3 effect is provided by a mini meta-analysis of a set of published data, as well as 2 new experiments applying a different paradigm. We suggest that this new effect reflects trial-by-trial modulation of cognitive control: Task conflict is higher in n-2 repetitions than in n-2 switches; therefore, cognitive control is increased in trials following n-2 repetitions, leading to improved performance. This facilitating effect of previous task conflict is discussed with respect to current theories on cognitive control

Digital Healthcare Projects Policy Action Plan

Whilst the policies of the centre are designed to support a focused effort researching the field of information and communication technologies (ICTs), including increasingly pervasive communication networks, it is recognised that increasing processing power and the ability to transfer more information faster through both wired and wireless systems means that the developments will also include increased ability to search, filter and share both data and information. Our approach is to find new ways in which technologies can be used to meet the challenges facing health and healthcare in the next 10–15 years. ICTs can both enable and drive change in health and healthcare, and this raises social issues as well as technical ones. Particularly important is that ICTs may drive healthcare towards treating patients nearer (or in) their homes, putting greater emphasis upon bringing the patient more actively into the processes supporting their own healthcare contributing to the transition from the traditional ‘paternalistic’ model to one of negotiation and wider information sharing. . These technologies will generate vast amounts of health-related data. These data are made available to appropriate groups in a timely fashion. It must be processed to yield useful information. This raises questions about how any information generated is used. How is the data analysed? Who owns patient data? Most importantly, who should have access to patient data? The PSC policy documents aim to be both specific yet offer general advice. The intention is to provide cohesive guidance for projects and collective research effort yet provide specific direction to individuals that focus upon their needs. The field cross sections healthcare, pervasive systems and ECS groups. For this reason computer scientists offer to support this process through the provision of tools to steer users through establishing the most appropriate contacts and technology bases inside the pervasive systems centre so as to help find the ‘right’ technology partner and assist in building comprehensive records for collaborative efforts