Labelled as the "last frontier" for international property development, sub-Saharan Africa's larger cities are currently being revisioned in the image of cities such as Dubai, Shanghai and Singapore, which claim top positions in the world-class city leagues. Draped in the rhetoric of "smart cities" and "eco-cities", these plans promise to modernize African cities and turn them into gateways for international investors and showpieces for ambitious politicians. Yet the reality in all of these cities stands in stark contrast to the glass-box towers, manicured lawns and water features on developers' and architects' websites. With the majority of urban populations living in deep poverty and with minimal urban services, the most likely outcome of these fantasy plans is a steady worsening of the marginalization and inequalities that already beset these cities.

Urban planning in many parts of the world reflects an increasing gap between current approaches and growing problems of poverty, inequality, informality, rapid urbanisation and spatial fragmentation, particularly (but not only) in cities of the global South. Given past dominance of the global North in shaping planning theory and practice, this article argues that a perspective from the global South can be useful in unsettling taken-for-granted assumptions about how planning addresses these issues. The article takes a first step in this direction by proposing a ‘clash of rationalities’, between techno-managerial and marketised systems of government administration, service provision and planning (in those parts of the world where these apply) and increasingly marginalised urban populations surviving largely under conditions of informality. It draws together theoretical resources beyond the boundaries of conventional planning theory to understand the nature of this conflict, and the nature of the ‘interface’ between those involved, where unpredictable encounter and contestation also open the possibility for exploring alternative approaches to planning.

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Processes of state-society engagement around urban development issues, termed co-production, have been documented in both the Public Administration and Development Studies fields, but until recently have not attracted much attention in planning. Yet, particularly more recent approaches and cases of co-production from global South contexts do offer the possibility of adding to planning debates in this area, by expanding the context which shapes planning ideas beyond the global North, and perhaps shifting planning theory in the direction of becoming truly international. The paper identifies the important differences which underlie various strands of thinking about co-production, and also between these and planning assumptions in the area of collaborative and communicative planning.

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BackgroundTrans and gender diverse (TGD) young people worldwide experience high rates of poor mental health; however, these rates were unknown in Australia. In addition, how negative life events affect the mental health of TGD young people has been largely unexplored.MethodsThis paper reports on novel mental health findings of Trans Pathways, the largest study ever conducted in Australia with trans (transgender) and gender diverse young people (N = 859; aged 14–25 years). The study was an anonymous online cross-sectional survey undertaken in 2016. Logistic and linear regression models were used to test associations between mental health outcomes and negative life experiences.ResultsTGD young people in Australia experience high levels of mental distress, including self-harming (79.7%), suicidal thoughts (82.4%), and attempting suicide (48.1%). Three in four participants had been diagnosed with depression and/or anxiety (74.6% and 72.2%, respectively). Many TGD young people had been exposed to negative experiences such as peer rejection (89.0%), precarious accommodation (22.0%), bullying (74.0%), and discrimination (68.9%). Most poor mental health outcomes were associated with negative experiences. The strongest associations were found for precarious accommodation and issues within educational settings. For example, participants with a prior suicide attempt were almost six times more likely to have experienced issues with accommodation, including homelessness.ConclusionsThe current results highlight the urgent need for better mental health care and provide insight into areas for targeted mental health interventions. These findings are pertinent for clinicians working with trans young people and wider society.

The article suggests that planning's current sources of moral philosophy are no longer an entirely satisfactory guide on issues of ethical judgement in a context of deepening social difference and an increasingly hegemonic market rationality. A focus on process in planning and a relative neglect of product, together with the assumption that such processes can be guided by a universal set of deontological values shaped by the liberal tradition, are rendered particularly problematic in a world which is characterized by deepening social and economic differences and inequalities and by the aggressive promotion of neoliberal values by particular dominant nation-states. The notion of introducing values into deliberative processes is explored.

System R is a database management system which provides a high level relational data interface. The system provides a high level of data independence by isolating the end user as much as possible from underlying storage structures. The system permits definition of a variety of relational views on common underlying data. Data control features are provided, including authorization, integrity assertions, triggered transactions, a logging and recovery subsystem, and facilities for maintaining data consistency in a shared-update environment.This paper contains a description of the overall architecture and design of the system. At the present time the system is being implemented and the design evaluated. We emphasize that System R is a vehicle for research in database architecture, and is not planned as a product.