E-Pedagogy of Handheld Devices 2013 Survey: Patterns of student use for learning

The Pedagogy of Ebooks (E-Ped) project began in 2012 and seeks to document, analyse and explain the changing study practices of UK distance learning students as they employ, adapt and integrate the use of new portable digital devices such as e-book readers and tablets into their learning. This report describes the results of an undergraduate survey undertaken in 2013 at the Open University (UK) which asked students how they used e-readers, tablets and smartphones for study. This research represents a snapshot of the rapidly changing interaction between technology and education, and highlights issues and opportunities for Higher Education in supporting student adoption of appropriate technologies and development of effective new methods of study

Learning nests and local habitations

In this paper, we return to two descriptions of the ways that learning is located in technology enhanced environments. The idea of a local habitation arose in the context of an ecological view of the way people shaped new technologies for their own needs and it stood in opposition to the idea that new media and technologies led to inevitable consequences. The second term learning ‘nests’ arose out of research that focused on student study-bedrooms. Both terms were useful in humanising the relationships between new networked technologies and their users and locating the students and teachers who made use of them. We revisit the idea of learning nests understood as a local habitation using data collected as part of an ESRC funded project examining The Net Generation encountering e-learning at university. The report is based on 19 first year undergraduate students who took part in a cultural probe exercise. During 24 hours they received SMS text messages and recorded answers to a fixed set of prompt questions either using a small hand held video camera or using a small notebook. Our findings illustrate how students give meaning to the array of technologies and services they are presented with. They show that the technological landscape has changed markedly in the past 10 years but that student practices do not seem to have moved as quickly. Students still use the kinds of learning spaces they used 10 years ago despite the increased availability of network access to the Internet and the increased ownership and availability of mobile devices. An area where there has been significant change is in the social character of students’ engagements with networked technologies and the integration of the mobile phone, social networking and other social technologies into the everyday fabric of student life. However there is little evidence of significant change in student practices in terms of the adoption of mobile network access from this research and this should lead to caution in making predictions of change

Exploring the occupational experiences of livestock farmers during drought: A narrative inquiry

Introduction: For much of the 21st century, Australia has endured the most prolonged and severe drought since records began. This drought has been found to have negative and long-lasting consequences upon both the physical and mental well-being of farmers and their families. To date, however, no research has examined the experience of drought from an occupational perspective. Objective: This study aims to explore the way in which drought impacts upon the lived experience of the farming role and the way in which the occupational identity of farmers influences the meanings attributed, and response to, drought. Methods: Narrative inquiry and thematic analysis were used to explore the experiences of drought among six farming men and four farming women from Northern Queensland. Findings: Four inter-related themes were identified. These being: ‘Becoming a farmer – Rites of passage on entry to the farming role’; ‘Farmers as guardians over the land’; ‘Drought as siege’ and; ‘Leisure occupations as temporary bridges to a world beyond drought’. Each of these themes offer insights into the way in which drought comes to be understood by farmers and, in turn, experienced and responded to. Conclusion: By better understanding the occupational experiences of farmers during drought, resources can be more effectively targeted towards promoting occupational balance and well-being. Interventions aimed at reframing the way in which the farming role is conceptualised from a young age and supporting occupations beyond farming as bridges to the outside world may be effective in achieving positive outcomes during drought

A cohesive-zone crack healing model for self-healing materials

A cohesive zone-based constitutive model, originally developed to model fracture, is extended to include a healing variable to simulate crack healing processes and thus recovery of mechanical properties. The proposed cohesive relation is a composite-type material model that accounts for the properties of both the original and the healing material, which are typically different. The constitutive model is designed to capture multiple healing events, which is relevant for self-healing materials that are capable of generating repeated healing. The model can be implemented in a finite element framework through the use of cohesive elements or the extended finite element method (XFEM). The resulting numerical framework is capable of modeling both extrinsic and intrinsic self-healing materials. Salient features of the model are demonstrated through various homogeneous deformations and healing processes followed by applications of the model to a self-healing material system based on embedded healing particles under non-homogeneous deformations. It is shown that the model is suitable for analyzing and optimizing existing self-healing materials or for designing new self-healing materials with improved lifetime characteristics based on multiple healing events

Travelling waves in wound healing

We illustrate the role of travelling waves in wound healing by considering three different cases. Firstly, we review a model for surface wound healing in the cornea and focus on the speed of healing as a function of the application of growth factors. Secondly, we present a model for scar tissue formation in deep wounds and focus on the role of key chemicals in determining the quality of healing. Thirdly, we propose a model for excessive healing disorders and investigate how abnormal healing may be controlled

Self-healing composites: A review

Self-healing composites are composite materials capable of automatic recovery when damaged. They are inspired by biological systems such as the human skin which are naturally able to heal themselves. This paper reviews work on self-healing composites with a focus on capsule-based and vascular healing systems. Complementing previous survey articles, the paper provides an updated overview of the various self-healing concepts proposed over the past 15 years, and a comparative analysis of healing mechanisms and fabrication techniques for building capsules and vascular networks. Based on the analysis, factors that influence healing performance are presented to reveal key barriers and potential research directions

Self-healing in epoxy thermoset polymer films triggered by UV light

Self-healing of damaged structures can occur in three processes: capsule-based healing, vascular healing and intrinsic healing of polymers. The latest concept has a tremendous potential to repair damaged polymers and composite structures. Until now self-healing of composite materials has been addressed using capsule based resin with an initiator that polymerises in the damaged region. In this study, self-healing behaviour of cured epoxy thermoset resins modified with an epoxy-functionalised photoresponsive azobenzene molecule has been addressed by UV light without the use of any resin capsules or other component that is not chemically joined with the composites. The study was executed by nanoindentation and atomic force microscopy (AFM). Artificially damaged thermoset films exhibited good self-healing behaviour under UV irradiation only. This effect is attributed to the intrinsic healing mechanism triggered by UV-induced trans→cis isomerization of the azobenzene chromophore which enables the damaged polymeric matrix to recover.Funded by Defence Science and Technology Laboratory (DSTL

The Importance of Hydration in Wound Healing: Reinvigorating the clinical perspective

Balancing skin hydration levels is important as any disruption in skin integrity will result in disturbance of the dermal water balance. The discovery that a moist wound healing environment actively supports the healing response when compared to a dry environment highlights the importance of water and good hydration levels for optimal wound healing. The benefits of “wet” or “hyper-hydrated” wound healing appears to offer benefits that are similar to those offered by moist wound healing over wounds healing in a dry environment. This suggests that the presence of free water itself during wound healing may not be detrimental to healing but that any adverse effects of wound fluid on tissues is more likely related to the biological components contained within chronic wound exudate (e.g. elevated protease levels). Appropriate dressings applied to wounds must be able to absorb not only the exudate but also retain this excess fluid together with its protease solutes while concurrently preventing desiccation. This is particularly important in the case of chronic wounds where peri-wound skin barrier properties are compromised and there is increased permeation across the injured skin barrier. This review discusses the importance of appropriate levels of hydration in skin with a particular focus on the need for optimal hydration levels for effective healing

Visualization of self-healing materials by X-ray computed micro-tomography at UGCT

This work presents recent advancements in X-ray micro-computed tomography (XRMCT) of self-healing materials at Ghent University’s Centre for X-ray Tomography (UGCT). Results of XRMCT imaging in a self-healing polymer system are shown to demonstrate the use of XRMCT in self-healing studies. Furthermore, two new XRMCT scanners are presented. The HECTOR scanner was designed for large samples and strongly attenuating samples, and is therefore well suited to study self-healing concrete. The EMCT scanner is well suited for dynamic self-healing experiments in a controlled environment