Showing papers by "University of Huddersfield published in 2007"

Experience‐based learning: a model linking the processes and outcomes of medical students' workplace learning

Abstract: OBJECTIVE To develop a model linking the processes and outcomes of workplace learning. METHODS We synthesised a model from grounded theory analysis of group discussions before and after experimental strengthening of medical students' workplace learning. The research was conducted within a problem-based clinical curriculum with little early workplace experience, involving 24 junior and 12 senior medical students. RESULTS To reach their ultimate goal of helping patients, medical students must develop 2 qualities. One is practical competence; the other is a state of mind that includes confidence, motivation and a sense of professional identity. These 2 qualities reinforce one another. The core process of clinical workplace learning involves 'participation in practice', which evolves along a spectrum from passive observation to performance. Practitioners help students participate by being both supportive and challenging. The presentation of clear learning objectives and continuous periods of attachment that are as personal to the student(s) and practitioner(s) as possible promote workplace learning. CONCLUSIONS The core condition for clinical workplace learning is 'supported participation', the various outcomes of which are mutually reinforcing and also reinforce students' ability to participate in further practice. This synthesis has 2 important implications for contemporary medical education: any reduction in medical students' participation in clinical practice that results from the patient safety agenda and expanded numbers of medical students is likely to have an adverse effect on learning, and the construct of 'self-directed learning', which our respondents too often found synonymous with 'lack of support', should be applied with very great caution to medical students' learning in clinical workplaces.

A review of associative classification mining

Abstract: Associative classification mining is a promising approach in data mining that utilizes the association rule discovery techniques to construct classification systems, also known as associative classifiers. In the last few years, a number of associative classification algorithms have been proposed, i.e. CPAR, CMAR, MCAR, MMAC and others. These algorithms employ several different rule discovery, rule ranking, rule pruning, rule prediction and rule evaluation methods. This paper focuses on surveying and comparing the state-of-the-art associative classification techniques with regards to the above criteria. Finally, future directions in associative classification, such as incremental learning and mining low-quality data sets, are also highlighted in this paper.

The Transition of Adult Students to Higher Education: Legitimate Peripheral Participation in a Community of Practice?:

Abstract: This article presents empirical research exploring adult students' transition to higher education (HE) through a program designed to enable that transition. Wenger's Communities of Practice theory has been applied to informal adult learning by Merriam, Courtenay, and Baumgartner (2003), who suggested its potential for understanding formal education. Using this theoretical framework, adults' transition to HE is explored in terms of learning, participation in practices, and identity. Students were interviewed, and qualitative data analysis revealed that although they perceived themselves to be peripheral participants in the community, university regulations, and academic procedures sometimes undermined their feelings of legitimacy. Their experiences of the community's practices were mediated by individual, shifting identities and a sense of belonging. Their experiences are discussed in terms of the power of practice to include or exclude, and the concomitant identity shifts which may lead to fuller particip...

A mitochondrial stratigraphy for island southeast Asia.

Abstract: Island Southeast Asia (ISEA) was first colonized by modern humans at least 45,000 years ago, but the extent to which the modern inhabitants trace their ancestry to the first settlers is a matter of debate. It is widely held, in both archaeology and linguistics, that they are largely descended from a second wave of dispersal, proto-Austronesian-speaking agriculturalists who originated in China and spread to Taiwan approximately 5,500 years ago. From there, they are thought to have dispersed into ISEA approximately 4,000 years ago, assimilating the indigenous populations. Here, we demonstrate that mitochondrial DNA diversity in the region is extremely high and includes a large number of indigenous clades. Only a fraction of these date back to the time of first settlement, and the majority appear to mark dispersals in the late-Pleistocene or early-Holocene epoch most likely triggered by postglacial flooding. There are much closer genetic links to Taiwan than to the mainland, but most of these probably predated the mid-Holocene "Out of Taiwan" event as traditionally envisioned. Only approximately 20% at most of modern mitochondrial DNAs in ISEA could be linked to such an event, suggesting that, if an agriculturalist migration did take place, it was demographically minor, at least with regard to the involvement of women.

Paradigm shifts in surface metrology. Part II. The current shift

Abstract: This is the second part of the paper ‘Paradigm shifts in surface metrology’. In part I, the three historical paradigm shifts in surface metrology were brought together, and the subsequent evolution resulting from the shifts discussed. The historical philosophy highlighted the fact that the paradigm shifts must be robust and flexible, meaning that surface metrology must allow for full control of surface manufacture and provide an understanding of the surface functional performance. Part II presents the current paradigm shift as a ‘stepping stone’, building on the above historical context. Aspects of surface geometry will also have to cater for surfaces derived from disruptive application, i.e. structured and freeform surfaces are identified candidates. The current shift is presented in three aspects: from profile to areal characterization; from stochastic to structured surfaces; and from simple geometries to complex freeform geometries, all spanning the millimetre to sub-nanometre scales. In this paradigm shift, the scale of surface texture is beginning to approach some of the geometrical features in micro/nano electro-mechanical systems devices and is becoming one of the most important functionality indicators. Part II will contextualize the current shifts in the discipline of surface metrology, and cement surface metrology in place in the ultra precision and nanotechnology age.

Involving stakeholders in developing corporate brands: the communication dimension

Abstract: Those involved in corporate branding recognise that interactions with stakeholders are crucial. Surprisingly therefore, the author found that there is relatively little in the literature or in the study of practice that indicates how the range of stakeholders can be actively engaged in developing the corporate brand. Stakeholders are usually regarded as targets rather than partners in its development. This is reflected in the planning models, which, although often denoting stakeholders as integral to the process, are not explicit about how or to what extent they should be involved. In this paper a process describing the contribution that stakeholders can make based on the concept of a 'negotiated brand' is proposed. The author then goes on to outline four different practical communication strategies that can be used to involve stakeholders in corporate brand development depending on the nature of their relationship with the organisation.

Residual magnetic field sensing for stress measurement

Abstract: The evaluation of both applied and residual stresses in engineering structures to provide early indications of stress status and eventual failure is a fast growing area in non-destructive testing. Much work has been done in recent years in the development of magnetic stress measurement techniques for ferromagnetic materials using applied magnetic fields to monitor changes in the magnetic properties of materials, such as variations in the hysteresis curve or Barkhausen emission. But the area of passive field measurement is relatively unexplored. When magnetic metals are strained, they irreversibly transformed from a non-magnetic state to a magnetic state, this is referred to as metal magnetic memory (MMM) or the residual magnetic field (RMF). This paper investigates the phenomena under different circumstances and applies the residual magnetic field technique to stress measurement. A three axis magneto-resistive magnetic field sensor is used to measure the residual magnetic fields parallel to the applied stress and the material surface (Bx) and perpendicular to the material surface (Bz), generated by the magneto-mechanical effect without the application of an external field, using steel samples exposed to stresses. The test results show that without using an applied field, the stresses in a sample can be measured using magnetic field sensing, with Bx showing particularly good correlation. The work concludes that the novel passive field technique including analysis of the magnetic field pattern and magnetic field variation rate, would prove advantageous in certain circumstances, for example in-service inspection of structures with complex geometries. Further research directions are also highlighted.

Experiment and simulation study of 3D magnetic field sensing for magnetic flux leakage defect characterisation

Abstract: Magnetic flux leakage (MFL) testing is widely used to detect and characterise defects in pipelines, rail tracks and other structures. The measurement of the two field components perpendicular to the test surface and parallel to the applied field in MFL systems is well established. However, it is rarely effective when the shapes of the specimens and defects with respect to the applied field are arbitrary. In order to overcome the pitfalls of traditional MFL measurement, measurement of the three-dimensional (3D) magnetic field is proposed. The study is undertaken using extensive finite element analysis (FEA) focussing on the 3D distribution of magnetic fields for defect characterisation and employing a high sensitivity 3-axis magnetic field sensor in experimental study. Several MFL tests were undertaken on steel samples, including a section of rail track. The experimental and FEA test results show that data from not only the x- and z-axes but also y-axis can give comprehensive positional information about defects in terms of shape and orientation, being especially advantageous where the defect is aligned close to parallel to the applied field. The work concludes that 3D magnetic field sensing could be used to improve the defect characterisation capabilities of existing MFL systems, especially where defects have irregular geometries.

Paradigm shifts in surface metrology. Part I. Historical philosophy

Abstract: Surface texture and its measurement are becoming the most critical factors and important functionality indicators in the performance of high precision and nanoscale devices and components. Surface metrology as a discipline is currently undergoing a huge paradigm shift: from profile to areal characterization, from stochastic to structured surfaces, and from simple geometries to complex free-form geometries, all spanning the millimetre to sub-nanometre scales. This paper builds a complete philosophical framework for surface metrology through a review of the paradigm shifts that have occurred in the discipline of surface metrology, tracing the development of fundamental philosophies and techniques. The paper starts with a brief overview of the historical paradigm shifts and builds an up-to-date foundational philosophy, capable of rapid and effective development. The growth in interest in surface metrology stems mainly from the need to control the manufacture of armaments during the Second World War and the production of domestic goods and appliances since that time. The surfaces produced by manufacture seemed to offer the possibility of being useful for process control. Unfortunately, only a few tentative investigations had been carried out to establish usable relationships between the processes, the machine tools and the available surface parameters (with their limitations). Even fewer investigations had been carried out to relate surface geometry to the performance of manufactured products. The result was that the metrology was unprepared and, consequently, the progress was sporadic. This overall review is given in two parts. Part I focuses on the historical philosophy of surface metrology and Part II discusses the progress within the current paradigm shift.

Islamic values: a distinctive framework for moral education?

Abstract: The first half of this Editorial examines the implications of the close link between morality and religion in Islamic thinking. There is no separate discipline of ethics in Islam, and the comparative importance of reason and revelation in determining moral values is open to debate. For most Muslims, what is considered halāl (permitted) and harām (forbidden) in Islam is understood in terms of what God defines as right and good. There are three main kinds of values: (a) akhlāq, which refers to the duties and responsibilities set out in the shari‘ah and in Islamic teaching generally; (b) adab, which refers to the manners associated with good breeding; and (c) the qualities of character possessed by a good Muslim, following the example of the Prophet Muhammad. Among the main differences between Islamic and western morality are the emphasis on timeless religious principles, the role of the law in enforcing morality, the different understanding of rights, the rejection of moral autonomy as a goal of moral educa...

Letting them get away with it: Fathers, domestic violence and child welfare

Abstract: Recent developments at policy, legislative and practice levels have led to the mainstreaming of domestic violence as a child welfare issue. However, research evidence would suggest that familiar and well established tensions in service provision to women and children continue to be recycled. Moreover, there remains a central dichotomy in relation to men. Constructed as perpetrators or offenders, their identities as fathers remain invisible with serious consequences for the development of policies and practices which engage with them as `domestically violent fathers'. The discursive removal of violent men from the category of father or indeed parent needs addressing in order to support women and children, but also to offer possibilities for men to develop non-violent parenting and partnering relationship patterns.

Multi-stage turbocharger system

Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12).

Online annotation - Research and practices

Abstract: Annotation can be a valuable exercise when trying to understand new information. The technique can be used to create a 'condensed' version of the original information for later review and to add additional information into the existing document. The growth in web-based learning materials and information sources has created requirement for systems that allow annotations to be attached to these new sources and, potentially, shared with other learners. This paper discusses annotation in an educational context and introduces some of the web annotation systems currently available. It also provides an overview of the development of a new system, eLAWS, by the authors, based upon the Web Service architecture. Finally, the paper provides suggestions for the future development of e-Learning Annotation tools.

Engeström’s version of activity theory: a conservative praxis?

Abstract: This article examines Engestrom’s version of activity theory, one rooted in Marxism. It is argued that whilst this approach holds progressive possibilities, its radicalism is undermined by a restricted conceptualisation of transformation and the marginalisation of a politicised notion of social antagonism. As a consequence, this approach to activity theory can easily fold over into a conservative praxis that undermines its potential radicalism, becoming instead technicised and a form of transformism.

Planning domain definition using GIPO

Abstract: In this paper an object-centric perspective on planning domain definition is presented along with an overview of GIPO (graphical interface for planning with objects), a supporting tools environment. It is argued that the object-centric view assists the domain developer in conceptualizing the domain’s structure, and we show how GIPO enables the developer to capture that conceptualization at an appropriate and matching conceptual level. GIPO is an experimental environment which provides a platform for exploring and demonstrating the range and scope of tools required to support the knowledge engineering aspects of creating and validating planning systems, both for classical pre-condition planning and hierarchical planning. GIPO embodies the object-centric view, leading to a range of benefits typically associated with object-oriented methods in other fields of software engineering such as highly visual development methods, code reuse and efficient, reliable development.

The relationship between passive range of motion and range of motion during gait and plantar pressure measurements

Abstract: Aims To investigate the relationship between limited joint mobility (LJM; measured both passively and during gait) and plantar pressure measurements. Methods A cross-sectional study involving 28 diabetic patients with peripheral neuropathy but no plantar ulceration (DN), 25 diabetic patients with ulceration (DU), 25 diabetic control patients with no ulceration or peripheral neuropathy (DC), and 25 non-diabetic reference subjects (NDR). Movements of the ankle joint complex (AJC) and 1st metatarsophalangeal (MTP) joint were recorded, together with plantar pressures. Results The passive range of motion at the AJC was significantly reduced in all the diabetes groups, but the gait range of motion was comparable with non-diabetic subjects. At the AJC, no correlation was found between the passive and gait range of motion (ROM) and these were not correlated with plantar pressure variables. At the 1st MTP, a correlation was found between the passive and gait dorsiflexion ROM and a significant correlation existed between gait dorsiflexion ROM at the 1st MTP joint and peak forefoot pressures in the DU group. Conclusions Despite a significant reduction in the passive ROM at the AJC in the diabetic groups, the gait ROM was indistinguishable from reference subjects and was not correlated with plantar pressure variables. At the 1st MTP joint, a correlation was found between the passive and gait ROM and furthermore the gait ROM was correlated with peak forefoot pressures, suggesting ROM measures at the 1st MTP joint may be preferable to ROM measures at the AJC.

Making sense of social enterprise

Abstract: Purpose – To study the ways in which the people involve in social enterprises make sense out of what they are trying to doDesign/methodology/approach – The study focused on the issues and concerns of participants in a social enterprise network in Bradford, UK, where the network includes both social enterprises and agencies offering them support Explains that the study aimed to examine the relationship between the development of social enterprise and organizational identity, processes and problems to determine what shared meanings and sense of shared identity are used by participants to make sense of social enterprise, how these are related to actions and projects within the social enterprise sector, and whether there is network integrity in responding and adapting to changes Reports on a case study involving exploratory semi‐structured interviews, between November 2005 and February 2006, with 11 key actors involved in social enterprise networks in Bradford, all of which were involved in either deliveri