High throughput fabrication of disposable nanofluidic lab-on-chip devices for single molecule studies

An easy method is introduced allowing fast polydimethylsiloxane (PDMS) replication of nanofluidic lab-on-chip devices using accurately fabricated molds featuring cross-sections down to 60 nm. A high quality master is obtained through proton beam writing and UV lithography. This master can be used more than 200 times to replicate nanofluidic devices capable of handling single DNA molecules. This method allows to fabricate nanofluidic devices through simple PDMS casting. The extensions of YOYO-1 stained bacteriophage T4 and λ−DNA inside these nanochannels have been investigated using fluorescence microscopy and follow the scaling prediction of a large, locally coiled polymer chain confined in nanochannels.     

The value of a non-sport-specific motor test battery in predicting performance in young female gymnasts

Gymnastics talent identification focuses on the identification of young gymnasts who display characteristics for potential success in the future. The aim of this study was to identify which current performance characteristics are related to performance in competition 2 years later. Twenty-three female gymnasts aged 7-8 years completed a multidimensional test battery measuring anthropometric, physical, and coordinative characteristics and were technically evaluated by expert coaches. Two years later, the all-around competition results of those gymnasts now participating in elite (n = 12) and sub-elite (n = 11) competition were obtained. None of the initial measurements significantly correlated with the results of the sub-elite gymnasts 2 years later. For the elite gymnasts, a non-sport-specific motor test battery correlated strongly with the competition result, with more than 40% of the variation in competition performance being explained by the result on that test 2 years earlier. Neither the coaches' judgement nor the anthropometric and physical characteristics were sensitive enough to predict performance. A motor coordination test might be valuable in the early identification of gymnasts, as its discriminative and predictive qualities might be sufficiently powerful for selection within a relatively homogeneous population of gymnasts exhibiting similar anthropometric and physical profiles.     

Guest editorial

Manufacturing technologies for making advanced micro systems have been developing in a rapid pace recently. Research progress towards nanosized structures and devices opens up a whole new horizon for miniaturized system integration. Advances in this field will have an enormous societal impact and economic benefit in areas such as information technology, energy, healthcare, and many more. There has been an enormous scientific and industrial interest in nanosized advanced technologies. The theories, tools and practices for the design, manufacturing and test of these systems are emerging. The aim of this special section is to capture some of the latest developments in integration technologies for the micro/nanosystems, with the following topics： Molecular and crystal assembly inside the carbon nanotube： encapsulation and manufacturing approachesElectroplating for high aspect ratio vias in PCB manufacturing： enhancement capabilities of acoustic streaming Local synthesis of carbon nanotubes for direct integra tion in Si microsystemsdesign considerations Waferlevel SLID bonding for MEMS encapsulation Effect of substrates and underlayer on CNT synthesis by plasma enhanced CVD These papers will briefly highlight important advance ments in manufacturing technologies of the micro/nano systems, and outline the blueprint of upcoming information technology revolution from the manufacturing point of view.     

The work of the audience: visual matrix methodology in museums

ABSTRACT

Visual matrix methodology has been designed for researching cultural imaginaries. It is an image-led, group-based method that creates a “third space” research setting to observe audience groups re-enacting lived experience of an event or process that takes place in the third space of a cultural setting. In this article, the method is described through its use in relation to an art-science exhibition, Human+ Future of the species, where three audience groups with investments in technology worked with exhibition material to achieve a complex ambivalent state of mind regarding technological futures. The visual matrix has been designed to capture the affective and aesthetic quality of audience engagement in third space by showing what audiences do with what is presented to them. We argue that such methodologies are useful for museums as they grapple with their role as sites where citizens not only engage in dialogue with one another but actively re-work their imaginaries of the future.     

A community of practice as an inclusive model to support children with social,emotional and behavioural difficulties in school contexts

Many school children throughout the world who exhibit antisocial or destructive behaviour or have social, emotional and behavioural difficulties (SEBD) do not receive the support they need. As a result, they are caught up in a cycle of vulnerability. Systemic collaborative support is needed to counter this. Although in some cases teachers and other professionals join forces, interventions are usually affected by individual professionals outside the framework of inclusive education. This literature review paper explores the support children with SEBD in school contexts receive. The findings of the thematic document analysis highlight the vulnerability of children with SEBD, the success or otherwise of attempts made by various approaches and intervention programmes to provide support to these children, and the barriers to inclusive support. We argue the merits of adopting a Community of Practice as an inclusive model to support school children with SEBD. This kind of inclusive model strengthens constructive partnerships that provide these children with opportunities to acquire the social capital they need to engage meaningfully at schools and in their future life.     

Secular youth and religious practice: candle lighting in Norwegian folk high schools

Although large international studies have defined Norway as one of the most secular countries in the world, Christian folk high schools in Norway have experienced record high attendance. This paper presents case studies of the religious education (RE) and practices of two Christian folk high schools in Norway. A survey shows that students at these schools can be considered representative of the confessional backgrounds and stated values of their cohort of Norwegian youth. The studied institutions have the declared goal of offering RE, of which an on-campus worship service is a central element. A large portion of the student body attends these services. Using a reconstruction of Etienne Wenger’s theory of communities of practice, the author analyses student participation in the school worship service, specifically in the act of candle lighting. Observations and student interviews indicate that the service can be described as a reflective practice representing a dialogic form of religion. This article contributes an analysis of the distinctive form of RE offered by Christian folk high schools in Norway. In a broader sense, it contributes to the understanding of secular youth and their relation to religious practice.     

Visibility and differentiation: systemic testing in a developing country context

Why has large-scale standardised testing attracted such a bad press? Why has pedagogic benefit to be derived from test results been downplayed? The paper investigates this question by first surveying the pros and cons of testing in the literature, and goes on to examine educators' responses to standardised, large-scale tests in a sample of low socio-economic status (SES) schools in the Western Cape, South Africa. The paper shows that teachers and school managers have an ambivalent attitude to tests, wary of the reputational costs they can incur, but also curious about the differentiated picture test results can give them as they learn to ‘read’ the underlying codes embedded in the results. The paper concludes that a focus on what tests make visible and a recognition of the pedagogic agency of teachers points to potential pedagogic benefits of systemic tests.