Coarse Grained Liouville Dynamics of piecewise linear discontinuous maps

We compute the spectrum of the classical and quantum mechanical coarse-grained propagators for a piecewise linear discontinuous map. We analyze the quantum - classical correspondence and the evolution of the spectrum with increasing resolution. Our results are compared to the ones obtained for a mixed system.Comment: 11 pages, 8 figure

Student-centred schools make the difference

The primary focus of this review is on how school leaders can develop and sustain a student-centred philosophy at all levels within their schools in order to increase the quality of education for all students. The authors draw on research literature from Australia and internationally to examine the impact that student-centred education can have on student outcomes, particularly for those students in disadvantaged contexts. The review initially explores the concept of student-centred schools and how this notion is nested within a range of theoretical and philosophical constructs. The authors draw from research into student-centred pedagogy, learner-centred education, student-centred teaching and learning, and student-centred/ learner-centred leadership to provide a description of a student-centred school. They then consider models of leading student-centred schools, drawing from AITSL’s Australian Professional Standard for Principals and looking at the large-scale student-centred reforms in Ontario, Canada. The authors use Viviane Robinson’s five dimensions of school leadership that impact on student outcomes: 1) Establishing goals and expectations, 2) Resourcing strategically, 3) Ensuring quality teaching, 4) Leading teacher learning and development, and 5) Ensuring a safe and orderly environment.  They then extend this framework to include three additional dimensions of student-centred schooling that emerged from the literature: a) Working with the wider community, b) Ethical Leadership, and c) Student voice. This report offers a critical review of literature to address the hypothesis that student-centred schools make the difference

Thermal effects on chaotic directed transport

We study a chaotic ratchet system under the influence of a thermal environment. By direct integration of the Lindblad equation we are able to analyze its behavior for a wide range of couplings with the environment, and for different finite temperatures. We observe that the enhancement of the classical and quantum currents due to temperature depend strongly on the specific properties of the system. This makes difficult to extract universal behaviors. We have also found that there is an analogy between the effects of the classical thermal noise and those of the finite $\hbar$ size. These results open many possibilities for their testing and implementation in kicked BECs and cold atoms experiments.Comment: 5 pages, 4 figure

Quantum Spectra of Triangular Billiards on the Sphere

We study the quantal energy spectrum of triangular billiards on a spherical surface. Group theory yields analytical results for tiling billiards while the generic case is treated numerically. We find that the statistical properties of the spectra do not follow the standard random matrix results and their peculiar behaviour can be related to the corresponding classical phase space structure.Comment: 18 pages, 5 eps figure

Flexible IGZO thin-film transistors with liquid EGaln gate contacts

Flexible thin-film electronics leverage technological innovations in fields such as sensors, wearable Computing and healthcare. As these Systems are required to conform to non-planar surfaces, novel approaches are developed to provide stable performance under mechanical stress, and prevent crack formation. Liquid eutectic-Galn promises the realisation of self- healing, reconfigurable and bendable circuits. Here, a liquid EGaln-gate thin-film transistor is fabricated and characterised. The device yielded a carrier mobility of 7.9 cm 2 V –1 s –1 that increased by 0.36 cm 2 V 1 s –1 when bent to a 4 mm radius. These results promote the integration of highly deformable liquid materials into thin-film devices