227 research outputs found
Mongolian rhapsody: a cultural evening with Galsan Tschinag
No full textAn author presentation by Tuvan writer, chieftain, and shaman, Galsan Tschinag, of his book _The Blue Sky_ on October 26, 2006. The novel was translated into English by Malaspina English Professor Katharina Rout, who also acted as interpreter for this event
Turbulent annular pipe flow in subcritical transition regime: Effect of radius ratio on strcutures
No full textDirect numerical simulations are performed for annular Poiseuille flows with various radius ratios η (= rin/rout) ∈ [0.1, 0.8] in subcritical transition regime of Reτ ∈ [48, 150]. Because the flow system of the annular Poiseuille flow can be regarded as the Hagen-Poiseuille flow (when η ≈ 0) and the plane Poiseuille flow (η ≈ 1), the (dis-)similarity and the connection between them are discussed. We found the occurrences of localized structure like the turbulent puff in the Hagen-Poiseuille flow at low η and of helical wave like the turbulent stripe pattern in the plane Poiseuille flow at high η. The switching point between helical wave and localized structure by changing η is caught in the region η ∈ [0.1, 0.3]
Structured electronic design of high-pass ΣΔ converters and their application to cardiac signal acquisition
No full textAchieving an accurate sub-Hz high-pass (HP) cutoff frequency and simultaneously a high accuracy of the transfer function is a challenge in the implementation of analog-to-digital converters for biomedical ExG signals. A structured electronic design approach based on state-space forms is proposed to develop HPΣΔ modulators targeting high accuracy of the HP cutoff frequency and good linearity. Intermediate transfer functions are mathematically evaluated to compare the proposed HPΣΔ topologies with respect to dynamic range. Finally, to illustrate the design method, an orthonormal HPΣΔ modulator is designed to be implemented in 0.18 μm technology which achieves a linearity of 12-bits.Accepted author manuscriptBio-Electronic
Heat transfer and entropy generation analysis of a protruded surface in presence of a cross-flow jet using Al 2 O 3 -water nanofluid
No full textHigh-Pass ΣΔ Converter Design Using a State-Space Approach and Its Application to Cardiac Signal Acquisition
No full textCardiac signal acquisition with high linearity and accuracy of the high-pass cut-off frequency imposes a challenge on the implementation of the analog preprocessing and the analog-to-digital converter. This paper describes a state-space-based methodology for designing high-pass sigma-delta (HP Sigma \Delta topologies with high linearity, targeting high accuracy of the high-pass cut-off frequency. Intermediate functions are evaluated mathematically to compare the proposed HP \Sigma \Delta topologies with respect to dynamic range. A sensitivity performance analysis of the noise transfer function with respect to integrator nonidealities and coefficient variations is also described. Finally, to illustrate the design approach, an orthonormal HP \Sigma \Delta modulator is designed to be implemented in 0.18 \mum CMOS technology, is tested with real prerecorded ECG signals.Accepted author manuscriptBio-Electronic
Primary teachers’ perspectives on implementing the inclusion agenda
No full textFrom book; Inclusive Education: Perspectives on pedagogy, policy and practice. Brown, Z. (ed).Inclusion in primary education is seen as an ideological concept where mainstream educated children in the UK will one day be included in every aspect of the schooling experience. The chapter suggests that inclusion is not the only priority agenda and investigates how it can be practically implemented alongside the government-imposed standards agenda. The author offers a historical account of the simultaneous development of these agendas, including the implementation of the National Curriculum, SATs and league tables. In the second section the author details findings from her recent study and suggests that standards objectives dominate the inclusion agenda in primary schools, and that inclusion is limited to focusing on children with Special Educational Needs
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