Dynamic scheduling of steel casting and milling using multi-agents

This paper presents a case study on the use of multi-agents for integrated dynamic scheduling of steel milling and casting. Steel production is an extremely complex problem requiring the consideration of several different constraints and objectives of a range of processes in a dynamic environment. Most research in steel production scheduling considers static scheduling of processes in isolation. In contrast to earlier approaches, the multi-agent architecture proposed consists of a set of heterogeneous agents which integrate and optimize a range of scheduling objectives related to different processes of steel production, and can adapt to changes in the environment while still achieving overall system goals. Each agent embodies its own scheduling model and realizes its local predictive-reactive schedule taking into account local objectives, real-time information and information received from other agents. Agents cooperate in order to find a globally good schedule, which is able to effectively react to real-time disruptions, and to optimize the original production goals whilst minimising disruption carried by unexpected events occurring in real-time. The inter-agent cooperation is based on the Contract Net Protocol with commitment.     

Employment programs for people with psychiatric disability: the case for change

This paper evaluates the effectiveness of disability employment policy in assisting people with psychiatric disability to find, or return to, paid work. We argue that the poor employment outcomes from current programs establish the need for a paradigmatic shift in the form of a state‐provided Job Guarantee (JG) for people with psychiatric disability. In the absence of measures to generate suitable jobs, forthcoming changes to the eligibility criteria for Disability Support Pension will create risks rather than opportunities. Under the JG, the Federal Government would maintain a ‘buffer stock’ of minimum wage, public sector jobs to provide secure paid employment for this highly disadvantaged group. The role of the state in this alternative model is two fold. First, the state must provide the quantum of JG jobs required. Second, the state must ensure the design of jobs is flexible enough to meet the heterogeneous and variable support needs of workers. This will require effective integration of the JG scheme with mental health, rehabilitation and employment support services.     

Tensions and contradictions in Australian social policy reform: compulsory Income Management and the National Disability Insurance Scheme

This paper explores contemporary contradictions and tensions in Australian social policy principles and governmental practices that are being used to drive behavioural change, such as compulsory income management. By means of compulsory income management the Australian Government determines how certain categories of income support recipients can spend their payments through the practice of quarantining a proportion of that payment. In this process some groups in the community, particularly young unemployed people and Indigenous Australians, are being portrayed as requiring a paternalistic push in order to make responsible choices. The poverty experienced by some groups of income support recipients appears to be seen as a consequence of poor spending patterns rather than economic and social inequalities. By contrast, Australia's National Disability Insurance Scheme (NDIS) has been constructed as a person centred system of support that recognises the importance of both human agency and structural investment to expand personal choices and control. Here we look at the rationale guiding these developments to explore the tensions and contradictions in social policy more broadly, identifying what would be required if governments sought to promote greater autonomy, dignity and respect for people receiving income support payments in Australia.     

Negotiating freedom: Women of colour and the transition to free labour in Cuba, 1870–1886

This article argues that women of colour were central to the process of the legal transition to free labour in Cuba. Through an examination of legal appeals for freedom – which were often facilitated by new opportunities created by transition legislation – it shows that women were motivated by factors such as their families and frequently by their position as urban domestic servants. They could also make use of gendered understandings of slavery and freedom, which were socially prevalent although not legally enshrined. The paper argues that a focus on women and gender may have important implications for our understanding of Cuba's transition to free labour and of some of the constructions of citizenship and nationhood with which it was entwined.     

‘As a slave woman and as a mother’: women and the abolition of slavery in Havana and Rio de Janeiro*

Abstract

This article explores how enslaved and freedwomen in Rio de Janeiro and Havana, the capital cities of the Americas' last two slaveholding territories, played a crucial and specific part in helping speed and shape the gradual emancipation processes that unfolded simultaneously in each context during the 1870s and 1880s. In each city, women were at the front line of legal battles for freedom waged by the enslaved and their freed relatives. The article suggests several reasons why. First, in both Brazil and Cuba, the abolition process was shaped by ‘free womb’ laws which, along with other subsequent legislation, created specific new opportunities for women to make legal claims on the basis of motherhood. Second, such petitions chimed not only with official legal stipulations but also with broader Atlantic anti-slavery rhetoric that sought emotive responses to the plight of slaves and appealed particularly to specific notions about maternal love. Third, these (ex-)enslaved women's struggles were shaped by their own understandings of the significances of freedom and of motherhood, and by their daily lives in these two Atlantic port cities, where women had long been a significant presence in each city's population and economic and cultural life. Looking beyond their ‘individual’ claims for freedom reveals how such claims emerged from a collective context of proximity, cohabitation and exchange of information and help. Despite the major differences between the broader economic and political trajectories of each country and city, it is the similarities between women's actions and contributions to the emancipation process that are particularly striking.     

The Snowballing Penalty Effect: Multiple Disadvantage and Pay

This paper makes the case that the current single‐axis approach to the diagnosis and remedy of pay discrimination is inadequate in the case of multiple disadvantage. While a good deal is known about pay gaps, particularly those affecting women, less is known about those affecting people in other disadvantaged groups and those in more than one such group. This analysis of multiple years of pay data, n = 513,000, from a large UK‐based company shows that people with more than one disadvantaged identity suffer a significantly greater pay penalty than those with a single disadvantage. The data also suggest that penalties associated with multiple disadvantage exponentially increase. In other words, disadvantages seem to interact to the detriment of people at ‘intersections’. The paper considers the implications for policies aimed at reducing pay inequalities. These currently take a single‐axis approach and may be misdirected.     

Joint modelling of event counts and survival times

Summary.  In studies of recurrent events, such as epileptic seizures, there can be a large amount of information about a cohort over a period of time, but current methods for these data are often unable to utilize all of the available information. The paper considers data which include post-treatment survival times for individuals experiencing recurring events, as well as a measure of the base-line event rate, in the form of a pre-randomization event count. Standard survival analysis may treat this pre-randomization count as a covariate, but the paper proposes a parametric joint model based on an underlying Poisson process, which will give a more precise estimate of the treatment effect.     

A Child‐inclusive Family Intervention in a Community Adult Mental Health Service

In this paper we describe an intervention that focuses on the needs of children in families where a parent has a mental illness and attends a community adult mental health setting. After a brief outline of the literature, we present a family approach that includes children and young people, their parents and grandparents. Case studies then illustrate the work as a ‘best practice’ for parents who are clients in community adult mental health services.