Effects of S-adenosylmethionine on production of secondary metabolites in Streptomyces diastatochromogenes 1628

Journal of Zhejiang University-SCIENCE B -...     

Chronische Myeloproliferative Erkrankungen (CMPE)

Ohne Zusammenfassung     

When Science is Strangely Alluring: Interrogating the masculinist and heteronormative nature of primary school science

Starting from the literature that interrogates the gendered nature of science and school science, this article considers the ways in which primary school science is masculinist and heteronormative. The author takes up Jane Miller's (1991) notion of the seductiveness of grand narratives (in this case school science) to envision the largely implicit ways in which school science may attract or repel certain students and teachers. Using this framework, the author 'reads' examples from the realms of pedagogy, curriculum and policy in primary school science, and concludes by examining some of the reasons why it is important to critically probe how these heterogendered boundaries are produced and reproduced with/in school science.     

Introducing a symbolic interactionist approach on teaching mathematics: the case of revoicing as an interactional strategy in the teaching of probability

This study examines an interactional view on teaching mathematics, whereby meaning is co-produced with the students through a process of negotiation. Further, teaching is viewed from a symbolic interactionism perspective, allowing the analysis to focus on the teacher’s role in the negotiation of meaning. Using methods inspired by grounded theory, patterns of teachers’ interaction are categorized. The results show how teachers’ actions, interpretations and intentions form interactional strategies that guide the negotiation of meaning in the classroom. The theoretical case of revoicing as a teacher action, together with interpretations of mathematical objects from probability theory, is used to exemplify conclusions from the proposed perspective. Data are generated from a lesson sequence with two teachers working with known and unknown constant sample spaces with their classes. In the lessons presented in this article, the focus is on negotiations of the meaning of chance. The analysis revealed how the teachers indicate their interpretations of mathematical objects and intentions to the students to different degrees and, by doing so, create opportunities for the students to ascribe meaning to these objects. The discussion contrasts the findings with possible interpretations from other perspectives on teaching.     

Investigating the relationships between informal learning and player involvement in digital games

In the last few years, digital games have become increasingly popular with both ‘hardcore’ and ‘casual’ audiences. At the same time, it has been argued that games can be powerful learning environments, since they are seen to encourage active and critical learning through participation in affinity groups and semiotic domains but there is a need for further empirical evidence to explore how this participation occurs and how prevalent it actually is. In addition the effectiveness of games within education indicates mixed results, though it has been suggested that this may indicate that learning through immersive worlds involves a more complex understanding of learning, one that is not so easy to tie to specified learning outcomes. It would seem the area would benefit from research that seeks to develop our understanding of how player involvement and learning come together in this context. This paper presents the preliminary results of a survey carried out in order to explore these issues. The initial findings suggest that how a player identifies as a gamer relates to what they think they gain from their gaming experiences with respect to learning.     

A field-based rhetorical critique of ethical accountability

This essay suggests that the concept of interdependence provides a rhetorical telos for research ethics. Current field-based rhetoric work advocates for a postcolonial research ethic. However, this is often articulated with a discourse of ethical accountability. Although it has advantages, accountability limits us by excluding ethical pursuit and reifying people as autonomous individuals. In contrast, interdependence helps complete the liberatory trajectory of postcolonial research ethics. Drawing on work in a recent field site, I argue that interdependence encourages scholars to see dilemmas as an opportunity for rhetorical response and ethical lament, helps scholars take creative action to be shaped by participants directly, and helps scholars explain to others why they pursue ethical actions beyond what is socially required.     

Creating effective teaching and learning environments: Building a positive behavioural support (PBS) model for UK special schools

The importance of reducing restraint and restrictive interventions in special schools has been recognised across the four nations of the UK. Government guidance for England and Wales, and recommendations produced by Restraint Reduction Scotland, both reference Positive behavioural support (PBS) as an evidence-based approach that can be used to proactively support pupils with, or at risk of, behaviours that challenge. The Department of Education of Northern Ireland recommends the development of behaviour support plans to support children with special education needs and disabilities. Special schools, however, also have a responsibility to set high expectations for every pupil, to provide access to the respective national curricula and to meet individual needs. School-wide positive behavioural support (SW-PBS), originated in the USA in the 1990s in response to a body of evidence that showed improved social and academic outcomes when behavioural interventions were implemented across whole school settings. It is increasingly being adopted in the UK. Drawing upon examples from schools in England and Wales with which the authors are familiar, this paper outlines the rationale for a special schools' model of SW-PBS and illustrates the ways in which this can be adjusted to meet the specific needs of each setting.

Key Points

• Reducing restraint and restrictive interventions in schools is a high priority across all four nations of the UK.
• Special schools also have a responsibility to provide children with special education needs and disabilities positive learning environments that maximise learning opportunities and meet individual needs.
• School-wide positive behaviour support (SW-PBS) provides a useful framework to help special schools meet these expectations.