Hand-powered microfluidics: A membrane pump with a patient-to-chip syringe interface

In this paper, we present an on-chip hand-powered membrane pump using a robust patient-to-chip syringe interface. This approach enables safe sample collection, sample containment, integrated sharps disposal, high sample volume capacity, and controlled downstream flow with no electrical power requirements. Sample is manually injected into the device via a syringe and needle. The membrane pump inflates upon injection and subsequently deflates, delivering fluid to downstream components in a controlled manner. The device is fabricated from poly(methyl methacrylate) (PMMA) and silicone, using CO₂ laser micromachining, with a total material cost of ∼0.20 USD/device. We experimentally demonstrate pump performance for both deionized (DI) water and undiluted, anticoagulated mouse whole blood, and characterize the behavior with reference to a resistor-capacitor electrical circuit analogy. Downstream output of the membrane pump is regulated, and scaled, by connecting multiple pumps in parallel. In contrast to existing on-chip pumping mechanisms that typically have low volume capacity (∼5 μL) and sample volume throughput (∼1–10 μl/min), the membrane pump offers high volume capacity (up to 240 μl) and sample volume throughput (up to 125 μl/min).     

Teachers’ knowledge and confidence for promoting positive mental health in primary school communities

This paper reports an investigation into Australian primary school teachers’ knowledge and confidence for mental health promotion. Questionnaires were delivered to 1397 teachers. In-depth interviews were held with 37 teachers. Quantitative results showed that half to two thirds of teachers felt efficacious and knowledgeable about selected components of mental health promotion. Independent judgments by staff about students’ mental health status concurred with students’ scores on the Strengths and Difficulties Questionnaire in about 75% of cases, indicating a good level of staff awareness about students’ mental health status. Exposure to the KidsMatter Primary mental health promotion initiative was associated with improvements in teachers’ efficacy, knowledge and pedagogy, with small to medium effect sizes. Qualitative analysis indicated that teachers’ subject-matter and pedagogical knowledge were heavily reliant on curriculum resources. Implications of the findings for the implementation of school-based mental health promotion initiatives are discussed.     

Sustaining technological innovation: The example of videoconferencing in English Schools

The main factors associated with technology integration have been the subject of research for over a decade. However, the conditions which sustain technological developments have been less frequently investigated. This paper explores this issue in the context of the use of videoconferencing in schools in England. The research took a multiple case-study approach by returning to schools with a reputation for demonstrating innovative policy and practice in videoconferencing, which were the subject of an earlier investigation. Analysis of developments in the interim five-year period led to the construction of a five-level typology of change. Further analysis identified critical dimensions associated with the sustainability of videoconferencing. These included technical and structural factors, as well as policy frameworks and personnel status. The perceived usefulness and relevance of videoconferencing as a learning technology emerges as a central determinant of sustainability, with the conclusion that for policymakers and schools, videoconferencing has become an ‘orphan’ technology.     

The danger of subverting students’ views in schools

This paper is firmly grounded in the position that engaging with students’ voices in schools is central to the development of inclusive practices. It explores the tensions that can be created when efforts are made to engage with students’ voices in relation to their experiences of learning and teaching. An example from a three-year research and development project, which worked alongside teachers to use students’ voices as a way of developing inclusive practices, is used to illustrate these tensions. This project, though showing that students’ voices can be a powerful means for understanding learning and teaching in schools, also encountered challenges with these processes. This paper focuses on the experiences of one secondary school which (possibly inadvertently) subverted and undermined students’ voice initiatives and explores the potential negative impacts of this on individual students, on students as a whole, and on teacher development. By doing this, suggestions as to how such tensions can be avoided in schools are offered, with the aim being to allow a genuine engagement with the views of students.     

THE COLLABORATIVE COURSE: INNOVATIVE TEACHING AND LEARNING

Advances in information technology provide an opportunity for academic librarians and professors to offer innovative collaborative courses. The purpose of collaboration between a faculty member and a professional librarian is to integrate instruction in the course subject matter with bibliographic instruction. This integration promotes learning information acquisition skills and critical thinking, as well as the use of library resources. Research skills that students need in order to use contemporary information technology are included. The integration of those skills with the subject material of the course is described.

Two applications of freshman/sophomore level courses are discussed in the paper. Course rationale, topics, and course assignments are illustrated. It is argued that students must learn modern methods of acquiring information in order to make informed independent judgments and in order to achieve understanding in any particular discipline. Providing students with the skills required to achieve access to the ever‐widening body of available information is an essential requirement of contemporary liberal education. These skills are transferable to subsequent course work and will provide the basis for life‐long learning habits. The paper presents the argument that students' achievement of “library literacy” can be promoted by effective course collaboration between faculty members and professional librarians. Benefits and problems of such collaborative courses are also discussed.     

Search tactics used in solving everyday how-to technical tasks: Repertoire,selection and tenacity

With greater access to computational resources, people use search to address many everyday challenges in their lives, including solving technology problems. Although there are now many useful ‘how-to’ resources online (especially videos on YouTube), it can still be difficult to identify, understand, and resolve certain kinds of technical problem. While research tasks have been studied for many years and we know the tactics people use, we know far less about searchers’ tactics for how-to technical tasks that involve actually being able to apply found information to resolve a problem. Crucial to our study was developing and studying a highly realistic, how-to technical task, for which there was no single guidance resource: making a phone safe for a child. After providing 39 participants with an actual phone to fix, and a search engine to perform the task, we analysed their search tactics using retrospective cued think aloud interviews. Our primary contribution is a set of 77 tactics used, in three categories, along with detail of how common they were. We conclude that people had a lot of tactics in their repertoire. Although it was not hard for participants to find relevant information, what was hard was for participants to find information they could use; indeed only 23% of participants successfully completed the entire task. Domain knowledge affected the choice of tactics used (although not necessarily towards better task success). We discuss these influences and make design recommendations for how future search systems can support those in resolving how-to technical tasks.     

Preservice teachers perspectives and experiences teaching personal and social responsibility

ABSTRACT

Background: Pedagogical models have become an established component of physical education over the past several decades. One such model, the Teaching Personal and Social Responsibility model, has gained momentum in practice and research, though little is known regarding its use in preservice teacher training. The model follows a flexible format focused on teaching life skills (e.g. leadership) that can be applied in all lived ecologies. Occupational socialization theory provides insight into the pretraining and teacher education experiences of preservice teachers that shape their understanding and practice of physical education and associated pedagogical models.

Aims: The purpose of this study was to understand the influence of a sequence of methods courses and early field experiences on U.S. preservice teachers’ understanding and implementation of the teaching personal and social responsibility model with youth from a community affected by poverty.

Method: This study took on a phenomenological and social constructivist approach. Ten preservice teachers (9 males, 1 female) took part in the study. The participants were an average age of 22.10 years old (SD?=?4.38) and seven identified as White and three as Black. Each participant was enrolled in methods and early field experience coursework that provided scaffolded training in primary education in a community affected by poverty. Preservice teachers team-taught groups of 10–15 children twice a week along with one day committed to on-campus reflection. Data collection included autobiographical essays, critical incident reports, reflective journals, non-participatory observations and field notes, and semi-structured interviews. Data were analyzed deductively through the lens of occupational socialization theory, and inductively as theory divergent trends were sought. Open and axial coding was completed with member checking throughout, resulting in a final set of themes and subthemes.

Findings: The preservice teachers initially struggled to connect with their students due to conflicting backgrounds, but the teaching personal and social responsibility model guided the relationship-building process. As the model was continuously utilized, more empathy and care were shown towards the children. Preservice teachers felt there was a lack of progression in positive behaviors but were able to empower youth and felt that the model was culturally relevant. Overtime, the students began to appreciate the affective domain despite the challenge of working in a community affected by poverty through frustration towards the larger system limiting any potential progress was present.

Conclusions: Subjective theories transitioned to include relationship building and life skills learning, likely because of the extended field experience and faculty support. The preservice teachers desire to connect with and teach the students well displays the connection between models-based practice and positive relationships. Preservice teachers’ knowledge of their students was limited as it was based on secondhand knowledge of youth, teacher educators, and school staff. Evidence indicates some cultural responsiveness development though there were also elements of a deficit model due to white privilege and class differences. Further work explicitly integrating a culturally relevant approach and social justice in teacher education programming should occur.