Amplitude-modulated sinusoidal microchannels for observing adaptability in C. elegans locomotion

In this paper, we present a movement-based assay to observe adaptability in Caenorhabditis elegans locomotion behavior. The assay comprises a series of sinusoidal microchannels with a fixed wavelength and modulating (increasing or decreasing) amplitude. The channel width is comparable to the body diameter of the organism. Worms are allowed to enter the channel from the input port and migrate toward the output port. Within channel sections that closely match the worm's natural undulations, the worm movement is relatively quick and steady. As the channel amplitude increases or decreases along the device, the worm faces difficulty in generating the propulsive thrust, begins to slow down and eventually fails to move forward. A set of locomotion parameters (i.e., average forward velocity, number and duration of stops, range of contact angle, and cut-off region) is defined for worm locomotion in modulated sinusoidal channels and extracted from the recorded videos. The device is tested on wild-type C. elegans (N2) and two mutants (lev-8 and unc-38). We anticipate this passive, movement-based assay can be used to screen nematodes showing difference in locomotion phenotype.     

Non-traditional students in tertiary education: inter-disciplinary collaboration in curriculum and pedagogy in community services education in Australia

Education policy in Australia has accelerated its aim to increase participation of under-represented groups in tertiary education including students who are culturally and linguistically diverse and have low socio-economic status. These students generally have not had prior access to privileged academic discourse, which can further disadvantage them in their participation and progress in tertiary education. In this article, we outline a cross-discipline curriculum initiative and pedagogy that draws on critical literacy and the metaphor of discourse community to integrate language and academic skills into community services qualifications. We argue that this – supports the genuine participation of under-represented (non-traditional) students. It aspires to not only support students’ entry into the new academic terrain, but to enable students to adopt a critical stance to the discourses in which they are learning to participate. This we argue is crucial, when expertise is not just a way of meeting its ostensible purposes, but is also a way of exercising power. Although we report on the application of this initiative to entry level curricula (Diploma), we suggest that it has relevance and application to Bachelor levels in a range of disciplines, both in supporting pedagogy and for transition to Bachelor level study.     

From peripheral to full participation in a blended trade bargaining simulation

This article considers the extent and nature of student participation in a trade bargaining simulation from a community of practice perspective. This third‐year economics module included a blend of online communication (through email, online chats and online discussions) and face‐to‐face meetings, both in smaller bargaining groups and in whole class plenary meetings. Our method of analysis includes the use of Exchange Structure Analysis of text chats and face‐to‐face learning conversations, triangulated by observation, survey and interview data. The focus on community of practice enables us to offer a nuanced interpretation of differences in crude participation data derived from the online chats. Superficially, the data may suggest marginalisation of participants, but Wenger's (1988 ) notion of peripheral participation with a trajectory towards full participation reframes the disparities in terms of an active community of practice. Some members are fully engaged with the practices of trade bargaining from the early stages of the simulation, while others move towards full participation over the duration of the simulation. Our results suggest that the laboratory‐based online text chats did provide opportunities for student participation in the simulation, and that male and female students exhibited different patterns of participation in the chats.     

Gender Differences in Science: An Expertise Perspective

The purpose of this paper is to propose a new approach to research on gender differences in science that uses the work on expertise in science as a framework for understanding gender differences. Because gender differences in achievement and participation in the sciences are largest in physics, the focus of this review is on physics. The nature of expertise is first discussed and a framework that focuses on factors that influence the emergence of expertise in physics is presented. This is used to interpret what is known about gender differences in science, particularly physics. Next, the potential contributions of the research on gender differences to our understanding of expertise are discussed. Using what is learned from these two areas of research, recommendations are made for future research examining gender differences in physics. It is suggested that such an approach be used for other areas of science, such as chemistry, where large gender differences in achievement and participation also exist.     

Inspired by Statistics?

This article considers being inspired by statistics as both a learner and a teacher. It looks particularly at a task involving research of Minard's Map, a statistical representation, to create and present a statistical task for a learner. It describes how the use of imagery, and the enthusiasm that developed as the map and its context were explored by the teacher, were passed on to the learner.     

The Theory of Motivated Information Management and Posttraumatic Growth: Emerging Adults’ Uncertainty Management in Response to an Adverse Life Experience

This study tested the degree to which the uncertainty management process that emerging adults go through following an adverse event predicts their perceptions of posttraumatic growth. Participants included 215 emerging adults who had experienced an adverse life event within the past year. Overall, the results largely supported the theory of motivated information management, as uncertainty discrepancies positively predicted negative emotions about the adverse event, which in turn predicted outcome expectancies, but not efficacy assessments. Outcome expectancies were predictive of efficacy assessments, which in turn were predictive of a willingness to seek information about the event from a parent. Collectively, uncertainty management behaviors predicted posttraumatic growth and included significant indirect effects for uncertainty discrepancies through communication and target efficacy, respectively.     

Five Critical Stances Towards Liberal Philosophy of Education in Britain

In this paper John White argues that there has been a decline in interest in and support for liberalism in British philosophy of education. He provides examples of work by leading figures in the field that demonstrates scepticism about the key liberal value of autonomy and offers an analysis of new influences in the field that have contributed to this decline. In particular he notes the increase of work from a religious perspective. Doubts are expressed about the practical relevance to education of some of these avenues of thought, and the suggestion is made that they cause those within the field to be more out of touch with society at large, in which liberal values have continued to be the major source of animation. The paper is followed by short responses from four philosophers of education whose work he criticises.