Proportionate flow shop with controllable processing times

This paper considers a special class of flow-shop problems, known as the proportionate flow shop. In such a shop, each job flows through the machines in the same order and has equal processing times on the machines. The processing times of different jobs may be different. It is assumed that all operations of a job may be compressed by the same amount which will incur an additional cost. The objective is to minimize the makespan of the schedule together with a compression cost function which is non-decreasing with respect to the amount of compression. For a bicriterion problem of minimizing the makespan and a linear cost function, an O(n log n) algorithm is developed to construct the Pareto optimal set. For a single criterion problem, an O(n2) algorithm is developed to minimize the sum of the makespan and compression cost. Copyright © 1999 John Wiley & Sons, Ltd.

Statistical analysis of extreme forest fires

Forest fires can cause extensive damage to natural resources and properties. They can also destroy wildlife habitat, affect the forest ecosystem and threaten human lives. In this paper extreme wildland fires are analysed using a point process model for extremes. The model based on a generalised Pareto distribution is used to model data on acres of wildland burnt by extreme fire in the US since 1825. A semi-parametric smoothing approach is adapted with maximum likelihood method to estimate model parameters.

Semi-Parametric Analysis of Extreme Forest Fires

Forest fires can cause extensive damage to natural resources and properties. They can also destroy wildlife habitat, affect the forest ecosystem and threaten human lives. In this paper incidences of extreme wildland fires are modelled by a point process model which incorporates time-trend. A model based on a generalised Pareto distribution is used to model data on acres of wildland burnt by extreme fire in the US since 1825. A semi-parametric smoothing approach, which is very useful in exploratory analysis of changes in extremes, is illustrated with the maximum likelihood method to estimate model parameters.

Choosing the appropriate level of coupling in multi-physics modeling of metallurgical processes

A computational model for the interrelated phenomena in the process of vacuum arc remelting is analyzed and adjusted of optimal accuracy and computation time. The decision steps in this case study are offered as an example how the coupling in models of similar processes can be addressed. Results show dominance of the electromagnetic forces over buoyancy and inertia for the investigated process conditions.

Socialising young literacy learners into a discourse of failure: Dominant discourses in literacy teaching and assessment and their impact on the progression of young literacy learners into employment

This paper argues that contemporary literacy programmes are a mismatch for the expectations of both the government and employers as well as the goals of learners. It submits that the dominant discourses in literacy provision have led to the emergence of a learning culture which not only fails the learners but is also incapable of meeting the aspirations of both the government and employers. To support this argument, the paper reports a small scale research project that analyses the perceptions of learners, teachers and employers who were involved in a work placement scheme for young literacy learners in a college of further education. Data for the study were collected through focus group and face to face interviews and analysed using the framework of discourse analysis provided by Gill (2000) with findings codified and analysed thematically. The study found that teachers were aware that their learners were not adequately prepared for the world of work because of the demands of the dominant discourses of quality and performance measurement which were most obviously manifested in their assessment, teaching methods and the attitudes of learners. It found that employers perceive young learners as inadequate in terms of the workplace expectations. Learners in the study revealed that their workplace culture and expectations were totally different from the culture to which they had been socialised in their studies. The study concludes that unless the dominance of these discourses is ameliorated, young literacy learners will continue to be socialised into a discourse of failure.

(Un)veiling desire: re-defining relationships between gendered adult education subjects and adult education programmes

My underlying argument, in this paper, is that conceptualisations of power as a commodity, through which the 'disempowered-as-illiterate' subject moves towards becoming an 'empowered-as-literate' subject, forces constructs of identities into a powerful/powerless dichotomy which does not always do justice to diverse experiences. The claimed 'empowering' intentions of adult education programme and policy practice may, in reality, contribute to the dominance of restrictive disciplining and regulatory discursive practices. Moving away from emancipatory trajectories of adult education programmes that allege only liberation from domination, through 'literacy', can promise freedom points to another position of hope. Drawing on Foucauldian analysis, I explore sites of resistance as possibilities of transforming 'structures of understanding' at different levels. Officially validated and recognised transformations, in adult education programme as well as policy understandings, of the 'illiterate' subject may also hope to include choices in postures of autonomy (see Spivak 1996) made by programme participants in other 'fields' of socio-cultural practice linked to their material realities. Subsequently, 'empowerment' of the 'illiterate Indian village woman' cannot solely be imagined as a product of laws, policies and institutional discursive practices (see, for example, Gouws 2005; Rai 2003 on gender mainstreaming and Mosse 2005 on aid policy and practice). The 'illiterate Indian village woman' represented as a site of resistance, throughout this paper, displaces homogeneous representations of the 'illiterate' which situate her in the role of 'dependent' or 'victim', as failed attempts to rob her of her historical and political agency (Mohanty 1996). Through narrating other 'images' of refusal in my ethnographic vignettes, I hope to recognise different individuals' sense of agency, at all levels, as embedded in and evolving through forms of collective action that activate differences in order to develop possibilities and sustain hope for transforming historically rooted discursive practices of inequality. I provide ethnographic accounts of resisting 'literacy' programme participants, based in different villages in Bihar (Northern India), as accounts of resistance impacted on by notions of norms, translating and interpreting Others, networks and empowerment.

Astonishing apples: visualising the novel

This paper explores the developing relationship between fictional and visual representations. The impact of visual art on the novel as mimetic is an issue that writers have engaged with and written about from the mid-nineteenth century to the present day, often raising the question of the art/life dialectic and how it has evolved through the novel’s exploration of ideas. From painting, photography, cinema, television and newer digital visual cultures writers have sought to involve themselves in a critical examination of the impact of changes in these forms on other art form and on wider society. How do these visual forms affect what it means to be an artist, a writer, a human being? The paper takes the work of Paul Cezanne as a starting point in the history of representation. Writers such as Rainer Maria Rilke, theorists such as Maurice Merleau-Ponty, and other artists like Picasso, have been influenced by, or responded to, Cezanne’s work and to Cezanne’s writings on art and his letters to his great childhood friend, the novelist Emile Zola. By discussing the creative practice of writing a novel this paper will examine questions of how the novel can, and should, respond to the impact of visual culture’s seeming dominance over other art forms. It also explores what impact new forms of visual culture have had upon the mimetic and formal aspects of the novel and how the novel works as representational, especially in relation to representations of human consciousness. [From the Author]

Managing the risk of parenting

The aim of parents is to enable their children to become autonomous individuals capable of participating fully in the culture in which they live (Korbin 1997). Furthermore, the quality of parenting is reflected in an adult’s ability to recognize and adequately meet a child’s needs in a developmentally and emotionally appropriate manner (Donald & Jureidini 2004).Within contemporary society however, parents are faced with the tensions of providing boundaries whilst affording children rights. This in itself brings risks and a common thread that runs through approaches to parenting is the attempt to define a threshold of acceptable parenting. Above the threshold and a parent is good enough and below is not good enough. This paper will consider what the minimum requirements are and explore different dimensions of parenting. The concept of good enough parenting will be revisited in relation to risks that parents have to take, within the context of contemporary policy related to improving outcomes for children as enshrined in the Every Child Matters: Change for Children Agendas (Department for Education and skills 2003). The current dominance of a risk management approach to safeguarding children will be addressed within the context of a ‘risk society’ and the importance of the safety and well-being of the child will be examined It will be suggested that we need to achieve a better balance of ensuring the safety of the child, meeting the child's developmental needs, and supporting family functioning if we are to help parents manage the risks.

University education as a public service

There is no tradition of public service in large parts of English higher education. This is because historically HE in England has seen itself as independent of the state and unaccountable to the public for its twin roles of research and teaching. These serve its own interests conceived as advancing knowledge and ensuring the continued transmission of that knowledge to future generations. The dominance of this conception explains the so-called ‘academic community’s’ Gaderene rush to abandon free HE in England. Resistance to preserve and extend public service HE will therefore predictably come mainly from former-local authority further and higher education institutions.