Transforming tradition: performances of Jingju ('Beijing Opera') in the UK

Jingju (‘Beijing opera’) is China's most iconic traditional theatre, marketed as a global signifier of Chinese theatre and national identity. Although troupes from mainland China regularly tour Europe, audiences in the UK have also had access to Jingju via two indigenous organizations: the UK Beijing Opera Society (now defunct) and the London Jing Kun Opera Association (now in its ninth year). These organizations consist of Chinese, overseas Chinese and Western performers performing both Jingju and Kunju (‘Kun opera’). Where there is a mix of ethnicity, can ‘traditional Chinese theatre’ still be conceived of as ‘traditional’? How is Jingju mapped onto non-Chinese bodies? Can Jingju performances by ethnically white performers reflect diasporic identities? Drawing on the theories of Judith Butler and Homi Bhabha, this article argues that by highlighting the performativity of identity, the performance of Jingju by non-Chinese performers challenges the notion of Jingju as a global signifier of ‘authentic traditional Chinese theatre’.

Archaeology on Egypt's edge: archaeological research in the Dakhleh Oasis, 1819-1977

This article provides the first substantial survey of early archaeological research in Egypt’s Dakhleh Oasis. In addition to providing a much-needed survey of research, this study embeds Dakhleh’s regional research history within a broader archaeological research framework. Moreover, it explores the impact of contemporaneous historical events in Egypt and Europe upon the development of archaeology in Dakhleh. This contextualised approach allows us to trace influences upon past research trends and their impacts upon current research and approaches, as well as suggest directions for future research.

Dynamics of interacting edge defects in copolymer lamellae

It is known that terraces at the air-polymer interface of lamella forming diblock copolymers do not make discontinuous jumps in height. Despite the underlying discretized structure, the height profiles are smoothly varying. The width of a transition region of a terrace edge in isolation is typically several hundreds of nanometres, resulting from a balance between surface tension, chain stretching penalties, and the enthalpy of mixing. What is less well known in these systems is what happens when two transition regions interact with one another. In this study, we investigate the dynamics of the interactions between copolymer lamellar edges. We find that the data can be well described by a model that assumes a repulsion between adjacent edges. While the model is simplistic, and does not include molecular level details, its agreement with the data suggest that some of the the underlying assumptions provide insight into the complex interplay between defects.

Climate change: challenging business, transforming politics

Climate change challenges contemporary management practices and ways of organizing. While aspects of this challenge have been long recognized, many pertinent dimensions are less effectively articulated. Based on contemporary literature and insights from articles submitted to this special issue, the guest editors of this special issue highlight some of the challenges posed by climate change to government and business, and indicate the range of options and approaches being adopted to address these challenges.

Competing edge networks

We introduce a model for a pair of nonlinear evolving networks, defined over a common set of vertices, sub ject to edgewise competition. Each network may grow new edges spontaneously or through triad closure. Both networks inhibit the other’s growth and encourage the other’s demise. These nonlinear stochastic competition equations yield to a mean field analysis resulting in a nonlinear deterministic system. There may be multiple equilibria; and bifurcations of different types are shown to occur within a reduced parameter space. This situation models competitive peer-to-peer communication networks such as BlackBerry Messenger displacing SMS; or instant messaging displacing emails.

Interactions of surfactants (edge activators) and skin penetration enhancers with liposomes

Incorporating edge activators (surfactants) into liposomes was shown previously to improve estradiol vesicular skin delivery; this phenomenon was concentration dependent with low or high concentrations being less effective. Replacing surfactants with limonene produced similar behaviour, but oleic acid effects were linear with concentration up to 16% (w/w), beyond which it was incompatible with the phospholipid. This present study thus employed high sensitivity differential scanning calorimetry to probe interactions of additives with ipalmitoylphosphatidylcholine (DPPC) membranes to explain such results. Cholesterol was included as an example of a membrane stabiliser that removed the DPPC pre-transition and produced vesicles with a higher transition temperature (Tm). Surfactants also removed the lipid pre-transition but reduced Tm and co-operativity of the main peak. At higher concentrations, surfactants also formed new species, possibly mixed micelles with a lower Tm. The formation of mixed micelles may explain reduced skin delivery from liposomes containing high concentrations of surfactants. Limonene did not remove the pre-transition but reduced Tm and co-operativity of the main peak, apparently forming new species at high concentrations, again correlating with vesicular delivery of estradiol. Oleic acid obliterated the pre-transition. The Tm and the co-operativity of the main peak were reduced with oleic acid concentrations up to 33.2 mol%, above which there was no further change. At higher concentrations, phase separation was evident, confirming previous skin transport findings.

On the edge: Southern Levantine Epipalaeolithic–Neolithic chronological succession

The broad picture of the cultural and chronological succession from the Epipalaeolithic to the Neolithic in the southern Levant is generally well understood. However, at a more detailed, local level, many questions remain unanswered. In this paper we examine the archaeological record of cultural developments in southern Jordan and the Negev. Focusing on a series of 14C dates from the early occupation of the PPNA site of WF16, we provide a critical review of dating evidence for the region. This review suggests that while the 14C chronology is ambiguous and problematic there is good evidence for a local historical development from the Harifian variant of the Natufian to the early PPNA, well to the south of any core Mediterranean woodland zone. This stresses the importance of considering developments at local scales of analysis, and that the Neolithic transition occurred within a framework of many interacting sub-regional provinces.

Climate change: challenging business,transforming politics

Climate change challenges contemporary management practices and ways of organizing. While aspects of this challenge have been long recognized, many pertinent dimensions are less effectively articulated. Based on contemporary literature and insights from articles submitted to this special issue, the guest editors of this special issue highlight some of the challenges posed by climate change to government and business, and indicate the range of options and approaches being adopted to address these challenges.