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The purpose of this paper is to compare different powder metallurgy (PM) processes to produce ceramic parts through additive manufacturing (AM). This creates the potential to rapidly shape ceramic parts with an almost unlimited shape freedom. In this paper, alumina (Al₂O₃) parts are produced, as Al₂O₃ is currently the most commonly used ceramic material for technical applications.

Variants of the following PM route, with indirect selective laser sintering (indirect SLS) as the AM shaping step, are explored to produce ceramic parts: powder synthesis, indirect SLS, binder removal and furnace sintering and alternative densification steps.

Freeform-shaped Al₂O₃ parts with densities up to approximately 90 per cent are obtained.

The resulting Al₂O₃ parts contain inter-agglomerate pores. To produce higher-quality ceramic parts through indirect SLS, these pores should be avoided or eliminated.

The research is innovative in many ways. First, composite powders are produced using different powder production methods, such as temperature-induced phase separation and dispersion polymerization. Second, four different binder materials are investigated: polyamide (nylon-12), polystyrene, polypropylene and a carnauba wax – low-density polyethylene combination. Further, to produce ceramic parts with increased density, the following densification techniques are investigated as additional steps of the PM process: laser remelting, isostatic pressing and infiltration.

ONE effect of sharing a common language with America is the imposition of a surfeit of books on matters like work study, in which our own literature is modest indeed. The almost simultaneous publication of two books with a common subject is therefore very unusual. They both deal with work measurement, one in forty‐seven chapters and the other in fifteen. Since books are not judged by a quantitative standard this is no guide to their respective merits.

NBL branches ‐ The National Book League's pilot attempt to establish a regional branch, master‐minded by Peter Labdon and taking the form of the Ipswich & Suffolk Book League, is already judged sufficiently encouraging for the NBL to seek to spread the process elsewhere in Britain. To which end there has been published a booklet called Branching Out—setting up National Book League local branches: a working handbook, which is obtainable without charge from the Director, Martyn Goff, at the NBL, Book House, 45 East Hill, Wandsworth, London SW18.

The purpose of this paper is to extend the macro-social marketing approach by detailing a framework to better understand the driving forces of wicked problems.

This is a conceptual paper that uses the financial crisis in Iceland as a demonstrative example to show how social mechanism theory can help social marketers and policy makers overcome complexity and strive for the social transformation they seek.

This paper suggests the utility of social mechanism theory for understanding wicked problems, how they came to be and how social marketing practices can be applied to resolve market complexities.

Social marketers need to identify what is driving what, to plan and implement interventions that will lead to the social change desired. This paper presents a framework that guides the analyst through this social change process.

This work provides social marketers with the means to understand the “moving parts” of a wicked problem to identify where an intervention is required to achieve the social change sought.