Cutting angle method - a tool for constrained global optimization

Cutting angle method (CAM) is a deterministic global optimization technique applicable to Lipschitz functions f: Rn → R. The method builds a sequence of piecewise linear lower approximations to the objective function f. The sequence of solutions to these relaxed problems converges to the global minimum of f. This article adapts CAM to the case of linear constraints on the feasible domain. We show how the relaxed problems are modified, and how the numerical efficiency of solving these problems can be preserved. A number of numerical experiments confirms the improved numerical efficiency.

Implementation of evidence into practice : Development of a tool to improve emergency nursing care of acute stroke

Background
Stroke is an increasing global health issue that places considerable burden on society and health care services. An important part of acute stroke management and decreasing stroke-related mortality is preventing complications within the first 24–48 hours. The current climate of prolonged time spent in the Emergency Department (ED) means that many aspects of stroke management are now the responsibility of emergency nurses.

Aims
The aims of this paper are to: i) examine the evidence related to nursing care of acute stroke, ii) identify evidence-based elements of stroke care with most applicability to emergency nursing and iii) use evidence-based stroke care recommendations to develop a guideline for the emergency nursing management of acute stroke.

Results
Emergency nursing care of acute stroke should focus on optimal triage decisions, physiological surveillance, fluid management, risk management, and early referral to specialists.

Conclusions
The role of emergency nurses in stroke care will increase and it is important that emergency nurses deliver evidence-based stroke care in order to optimise patient outcomes. Guidelines and decision support tools for use in emergency nursing must be practical and have high levels of clinical utility for maximum uptake in a busy clinical environment.

The metabolic syndrome: in need of a global mission statement

Aims The value of clinical definitions of the metabolic syndrome has been questioned, with confusion surrounding their intended use and purpose. Our aim was to construct a mission statement that outlines the value of the metabolic syndrome in clinical and public health settings.

Methods Case studies have been used to demonstrate three key points.

Results We argue here for recognition of obesity as being a crucial element within the metabolic syndrome but perhaps even more important before its development. We also contend that the concept does indeed have a role as a risk prediction tool, and that it could provide a useful metric for the scale and progress of the looming global epidemic of diabetes and cardiovascular disease.

Conclusions Through appreciation of its purpose, and recognition of both its limitations and those attributes that make it unique and valuable, we believe we have demonstrated here that the metabolic syndrome deserves its place in the global toolbox of diabetes and CVD prevention.

Sustaining human carrying capacity : a tool for regional sustainability assessment

Regional sustainability is an important focus for natural resource management. Measuring how social and economic systems are progressing to sustainability is therefore a critical need. But it is dependent upon the development of analytical and methodological tools to measure progress, particularly, we argue, at the regional level. Achieving sustainability at the regional scale is important since it's at this scale where social institutions and ecological functioning are most closely linked. However, our recent study that evaluated the effectiveness of current sustainability assessment methods at the regional scale found methods developed for the global, national and state scales are not entirely effective at assessing sustainability at this spatial scale. Following on from this critique, we developed and tested a new method for assessing sustainability, which we believe is applicable at the regional scale. The framework, Sustaining Human Carrying Capacity (SHCC), evaluates the sustainability of regional human activities by considering the pressures these activities have on regional ecosystems. SHCC was tested and evaluated at the regional scale, demonstrating its potential to be an effective method for monitoring sustainability. It also has potential to be used to inform the community and decision makers about the sustainability of their region, and help guide strategic planning to progress sustainability.

Global English corner : using Elluminate to enhance international students' English language skills

Students at Victoria University (VU) in Melbourne, Australia, undertake their study in an English language context and they have a range of support options to assist with English language development. VU has partner universities in China (Sichuan University, Henan University and Liaoning University). VU’s programs in China often have fewer language support options than programs in Melbourne. The Australian Government’s Transnational Quality Strategy requires that educational programs on- and offshore provide students with a comparable learning experience. Given the relative lack of English speaking opportunities available to VU’s students in China, the university is exploring how technologies might achieve a greater comparability of the student experience. This paper reports on a pilot program that uses Elluminate to conduct English conversations between students in China and Australia. The perceived lack of English competence of international students has been an ongoing issue in Australian higher education while the ‘English corner’ is ‘a characteristically Chinese approach to informal practice’ (Jin & Cortazzi, 2002) that helps students learning English in a foreign context to develop their English language proficiency. How might the idea of ‘English corner’ be used with educational technologies to encourage international students to practise and develop their English? This paper discusses a pilot program at VU that combines the idea of the English Corner together with the online conferencing tool Elluminate and a blog developed in WordPress, to engage Chinese students offshore in English language conversations. Through Elluminate and the Global English Corner blog, a pair of student peers in Melbourne conducts semi-structured conversations with groups of students offshore. In Elluminate, students can both hear and see each other – and they can simultaneously txt chat, share documents, images and websites and use the collaborative whiteboard function of Elluminate – to have dynamic conversations in real time. Preliminary findings of this pilot that uses technology to emphasise the societal aspects of learning – including language learning – will be presented. The discussion will consider how a more widespread English Corner program could aid the transition of international students in Australia, encourage the interaction of local students and international students, increase opportunities for international students to practise English and achieve a greater comparability of language support options on- and offshore.

Hume's humanity: a nexus for global management

This chapter explains the development of the Human Nexus, being an original interpretation of ethics based on David Hume's exploration of morality. Recognizing the current moral malaise in global business practice, and searching for a contemporary approach to relational ethics, his elegant reasoning is concisely adapted for global managers. The Human Nexus is proposed as a tool for conveying humanism in global business decision-making today. A matrix of Humean variables from Hume's moral treatise counterbalances usefulness and agreeableness with considerations of self-interest, selflessness and the human connection with ecology. The analysis explores the interaction of variables, relationships and decision processes common in global management. A longitudinal reflective study underpins the research. The resultant construct is presented in context with foundational and emerging literature about the challenge of abstract moral perspectives for global managers, highlighting the desire for something more practical. The Human Nexus shows potential for pragmatically encouraging and enhancing humanistic engagement in ethical decision-making.

Global positioning system: a new opportunity in physical activity measurement

Accurate measurement of physical activity is a pre-requisite to monitor population physical activity levels and design effective interventions. Global Positioning System (GPS) technology offers potential to improve the measurement of physical activity. This paper 1) reviews the extant literature on the application of GPS to monitor human movement, with a particular emphasis on free-living physical activity, 2) discusses issues associated with GPS use, and 3) provides recommendations for future research. Overall findings show that GPS is a useful tool to augment our understanding of physical activity by providing the context (location) of the activity and used together with Geographical Information Systems can provide some insight into how people interact with the environment. However, no studies have shown that GPS alone is a reliable and valid measure of physical activity.

Tool wear and surface integrity analysis of machined heat treated selective laser melted Ti-6Al-4V

In this study, the tool wear and surface integrity during machining of wrought and Selective LaserMelted (SLM) titanium alloy (after heat treatment) are studied. Face turning trails were carried out onboth the materials at different cutting speeds of 60,120 and 180 m/min. Cutting tools and machinedspecimens collected are characterized using scanning electron microscope, surface profiler and opticalmicroscope to study the tool wear, machined surface quality and machining induced microstructuralalterations. It was found that high cutting speeds lead to rapid tool wear during machining of SLMTi-6Al-4V materials. Rapid tool wear observed at high cutting speeds in machining SLM Ti-6Al-4Vresulted in damaging the surface integrity by 1) Deposition of chip/work material on the machinedsurface giving rise to higher surface roughness and 2) Increasing the depth of plastic deformationon the machined sub surface.