Calorimetry for ILC Experiments: CALICE Collaboration R&D

The CALICE Collaboration is carrying out research and development into calorimetry for a detector at the International Linear Collider (ILC). CALICE is investigating a range of technologies for both electromagnetic and hadronic calorimetry. An overview of the prototypes and selected test-beam results are presented.Comment: To appear in the proceedings of the ICHEP08 conferenc

Rare dental trait provides morphological evidence of archaic introgression in Asian fossil record

The recently described Denisovan hemimandible from Xiahe, China [F. Chen et al., (2019) Nature 569, 409–412], possesses an unusual dental feature: a 3-rooted lower second molar. A survey of the clinical and bioarchaeological literature demonstrates that the 3-rooted lower molar is rare (less than 3.5% occurrence) in non-Asian Homo sapiens. In contrast, its presence in Asian-derived populations can exceed 40% in China and the New World. It has long been thought that the prevalence of 3-rooted lower molars in Asia is a relatively late acquisition occurring well after the origin and dispersal of H. sapiens. However, the presence of a 3-rooted lower second molar in this 160,000-y-old fossil hominin suggests greater antiquity for the trait. Importantly, it also provides morphological evidence of a strong link between archaic and recent Asian H. sapiens populations. This link provides compelling evidence that modern Asian lineages acquired the 3-rooted lower molar via introgression from Denisovans

The tartan tax versus other revenue-raising options

Much has already been written about the devolved Scottish Parliament's Tartan Tax-varying powers (for example Blow et al. 1996, Darby et al. 2002, Heald and Geaughan 1996 and 1999, Heald et al. 1998, Heald and McLeod 2002, McGregor et al. 1997, Midwinter 2002, Muscatelli 2001, SPICe 2002). Much less has been written about other revenue raising options and it is the contention of this paper that the focus of attention on Tartan Tax-varying powers has been misplaced

Study made of ductility limitations of aluminum-silicon alloys

Study of the relation between microstructure and mechanical properties of aluminum-silicon alloys determines the cause of the variations in properties resulting from differences in solidification rate. It was found that variations in strength are a consequence of variations in ductility and that ductility is inversely proportional to dendrite cell size

Page composer to translate binary electrical data to optical form

Composer converts binary data to optical form for storage as hologram. Device consists of an array of deformable metal membranes controlled by MOSFET's. Device is fast, produces high contrast ratios, does not degrade with extended use, and can be addressed from diverse angles

A practice-led investigation into improvising music in contemporary Western culture

This thesis presents improvised practice with accompanying contextualisation alongside a discussion of the broader issues involved in improvising music in contemporary Western culture. The first chapter explores aesthetic and philosophical issues relating to improvisation in general while also establishing a context for the practice that follows. Starting by examining the role of a musical instrument in an improvising situation, this chapter goes on to discuss how improvisation challenges distinctions such as art and craft or subject and object. The issues of risk, vulnerability, dialogue and collaboration are then considered leading to an exploration of the role that memory, the familiar and habit play in improvisation. The chapter finishes with an investigation into the relationship between ethics and improvisation. The second chapter consists of improvised practice presented as four separate projects: The Quartet, Spock, CCCU Scratch Orchestra and a duo with Matthew Wright. Each of these projects consists of a commentary discussing particular issues raised through this research followed by the presentation of the relevant improvised practice. This practice is documented through and presented in the form of audio recordings. A concluding section reprises and identifies the overall themes of the thesis and provides contextualisation for the final live performance that forms an important practical component of this research

Ductility limitations of aluminum-silicon alloys

Relation between microstructure and mechanical properties of cast 356 type aluminum alloy