|
|
|
Sort Order |
|
|
|
Items / Page
|
|
|
|
|
|
|
| Srl | Item |
| 1 |
ID:
170746
|
|
|
|
|
| Summary/Abstract |
In 2012, a Chinese developer, Zendai, purchased 1,600 hectares of land in Modderfontein, Johannesburg, and announced plans for a new urban megadevelopment. Hiring a Chinese designer, the company released a series of computer-generated images. Drawing on these, the media and many in the city perceived the site to be distinctly “Chinese,” rooted in futuristic, speculative visions of urbanity. At the same time, African urban research turned its attention to similar large-scale projects throughout the continent, and has continued to speculate on their consequences. Building on these two different interpretations of Modderfontein, this paper engages with the site as a manifestation of both global trends (e.g., increasing Chinese engagement with Africa, urban inter-referencing throughout the Global South) and a reflection of place- and context-specific factors. In doing so, we focus on the ordinariness of the project to interrogate how the idea of creating an ultramodern global economic hub, rooted in the experiences and practices of a Chinese-based developer, was in the end mediated by the actions of international consultants and the City of Johannesburg. We suggest that Modderfontein should be seen as a generative form of urbanism where elements perceived to be Chinese were lost in the master planning process. We argue that the socio-material dimensions of the project instead reflect a distinctly South African urbanism.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
ID:
176842
|
|
|
|
|
| Summary/Abstract |
Energy sector policies have focused historically on the planning, design and construction of energy infrastructures, while typically overlooking the processes required for the management of their end-of-life, and particularly their decommissioning. However, decommissioning of existing and future energy infrastructures is constrained by a plethora of technical, economic, social and environmental challenges that must be understood and addressed if such infrastructures are to make a net-positive contribution over their whole life. Here, we introduce the magnitude and variety of these challenges to raise awareness and stimulate debate on the development of reasonable policies for current and future decommissioning projects. Focusing on power plants, the paper provides the foundations for the interdisciplinary thinking required to deliver an integrated decommissioning policy that incorporates circular economy principles to maximise value throughout the lifecycle of energy infrastructures. We conclude by suggesting new research paths that will promote more sustainable management of energy infrastructures at the end of their life.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 3 |
ID:
176714
|
|
|
|
|
| Summary/Abstract |
Existing energy infrastructure have a technical and/or economic lifecycle predetermined by the lifetime of certain components. In energy infrastructure, the residual lifetime of civil structure or other components with a longer life is usually wasted. Modular energy infrastructure can be reconfigurable decoupling the life of the infrastructure from their modules, and extending module and/or infrastructure lifecycle. Modularisation could become a cornerstone to enable circular economy (CE) and enhanced sustainability. Remarkably, despite the growing interest among policymakers, practitioners and academics in both CE and modularisation, there is a lack of knowledge about the link between CE and modularisation in energy infrastructure. Through a Systematic Literature Review, this paper derives the gap in knowledge regarding the link between CE and modularisation in energy infrastructure. This link is then investigated in other sectors identifying relevant implications such as reduction of construction waste and achievement of the closed-loop material cycle. Furthermore, the case of Yamal Liquefied Natural Gas project is used to compare and contrast two perspectives: “Traditional modularisation” and “Modular CE”. Lastly, the paper discusses existing policies, provides policy recommendations to foster “Modular CE” in energy infrastructure and suggests a research agenda.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 4 |
ID:
132641
|
|
|
|
|
| Publication |
2014.
|
| Summary/Abstract |
A brisk building boom of hydropower mega-dams is underway from China to Brazil. Whether benefits of new dams will outweigh costs remains unresolved despite contentious debates. We investigate this question with the "outside view" or "reference class forecasting" based on literature on decision-making under uncertainty in psychology. We find overwhelming evidence that budgets are systematically biased below actual costs of large hydropower dams-excluding inflation, substantial debt servicing, environmental, and social costs. Using the largest and most reliable reference data of its kind and multilevel statistical techniques applied to large dams for the first time, we were successful in fitting parsimonious models to predict cost and schedule overruns. The outside view suggests that in most countries large hydropower dams will be too costly in absolute terms and take too long to build to deliver a positive risk-adjusted return unless suitable risk management measures outlined in this paper can be affordably provided. Policymakers, particularly in developing countries, are advised to prefer agile energy alternatives that can be built over shorter time horizons to energy megaprojects.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|