QCD and strongly coupled gauge theories : challenges and perspectives

We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.Peer reviewe

The comparative biology of New Zealand oystercatchers

Oystercatchers comprise a distinctive group of mollusc-eating shorebirds. They form an extremely uniform monogeneric family which has not undergone any major adaptive radiations into a diversity of ecological niches, but rather has dispersed from original centres of distribution to occupy identical niches in new geographical localities. The uniformity of structure and habit displayed within the group has been attributed by Larson (1957) to a high ecobiotic specialisation with centripetal selection involved. Throughout their range, oystercatchers exploit identical ecological niches which require specialised habits for successful utilisation. The specialised feeding habits of oystercatchers are well documented (Murphy, 1925; Dewar, 1940; Larson, 1957; Tinbergen and Norton-Griffiths, 1964; Dare, 1966), and a natural consequence of this specialisation is that it is restrictive to adaptive radiation

Leading to decide or deciding to lead? Understanding the relationship between teacher leadership and decision making

This article, first, examines how Egyptian teachers and senior teachers (formal leaders) define leadership and whether the length of their teaching experience has an effect on their views. Second, it explores their perspectives on the relationship between teacher leadership and decision making. The research sample is a mixed group of 20 Egyptian teachers of English language, three of them are senior teachers. The length of their teaching experience varies from 2 to 13 years. The findings show that the group defines teacher leadership in terms of characteristics of leaders; styles of leadership and what teacher leaders do both inside and outside classroom. Almost all of them see a link between leadership and decision making. In general, length of experience does not seem to have a major impact on their views. This is a key finding because it raises questions about the Ministry of Education’s (MoE) selection of teachers for leadership responsibilities, which is based on the length of their teaching experience. The implications of these findings are examined in relation to the proposal of the MoE for decentralizing education in Egypt