Cr(N,C) diffusion coating formation on pre-nitrocarburised H13 tool steel

The microstructural processes of Cr(N,C) coating formation by thermoreactive deposition and diffusion (TRD) on pre-nitrocarburised H13 tool steel were studied. Both nitrocarburising and TRD were performed in fluidized bed furnaces at 570 °C. During TRD, chromium was transferred from chromium powder in the fluidized bed, to the nitrocarburised substrates by gas-phase reactions initiated by reaction of HCl gas with the chromium. Addition of 30% H2 to the input inert gas was found to increase the rate of coating formation, although hydrogen reduction resulted in rapid loss of nitrogen to the surface. The reason for the increased rate of coating formation could not be established without further investigation, although several possible explanations have been proposed. It was found that porosity and the formation of an iron nitride ‘cover layer’ during nitrocarburising were the biggest influences on the microstructure of the Cr(N,C) coating. Microstructural characterization of the coatings was performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and glow discharge optical emission spectroscopy (GDOES).

What are we scared of? The absence of sociology in current debates about drug treatments and policies

The official public policy related to recreational drug use and abuse in Australia is harm minimization or harm reduction. Definitions of harm minimization vary but a general statement is that harm minimization is a policy or programme intended to decrease adverse health, social and economic consequences of drug use, even though the user may continue to use psychoactive drugs. This type of definition is most often compared to a zero-tolerance policy that aims to eliminate all recreational drug abuse by legal and other means. Sociologists have historically scoffed at this latter policy. Unfortunately, what this has meant is that harm minimization in all its forms has not been the object of analytical work on the part of sociologists.

Norm diffusion within international organizations: a case study of the World Bank

Constructivists often argue that International Organizations (IOs) diffuse norms throughout the international system. This article asks the question: if IOs promote and diffuse specific norms within world politics, where do these norms come from? In particular, this analysis seeks to formulate how IOs' identities emerge in issue areas where rationalist theories give limited explanation, such as the environment. This article posits that IOs interact with and consume norms from non-state actors such as transnational advocacy networks, a process overlooked by the constructivist analysis of institutions. This is examined through a case study of the World Bank's environmental identity where transnational advocacy networks played an important role in the Bank's shift towards sustainable development, through processes characterized here as direct and indirect socialization. This article demonstrates that the Bank's shift was more than instrumental as a result of this interaction, and that constructivists therefore need to examine the role of IOs as norm consumers as well as norm diffusers.

Theorizing norm diffusion within international organizations

International Organizations (IOs) promote and diffuse norms within world politics. This prompts the question: where do these norms come from? This inquiry analyses how IOs have been perceived within the emerging norms literature where IOs are 'norm diffusers' within the international system, and finds that the way in which IOs themselves internalize norms has not been taken into account. This poses a potentially fruitful new avenue of inquiry into why and when IOs behave as norm diffusers. An interpretation of when and why IOs internalize norms is offered by positing that IO identities are not fixed and that they are 'norm consumers' socialized by state and non-state actors.

Technology diffusion: analysing the diffusion of agent technologies

Despite several examples of deployed agent systems, there remain barriers to the large-scale adoption of agent technologies. In order to understand these barriers, this paper considers aspects of marketing theory which deal with diffusion of innovations and their relevance to the agents domain and the current state of diffusion of agent technologies. In particular, the paper examines the role of standards in the adoption of new technologies, describes the agent standards landscape, and compares the development and diffusion of agent technologies with that of object-oriented programming. The paper also reports on a simulation model developed in order to consider different trajectories for the adoption of agent technologies, with trajectories based on various assumptions regarding industry structure and the existence of competing technology standards. We present details of the simulation model and its assumptions, along with the results of the simulation exercises.

The influence of demographic, behavioural and treatments characteristics on problem gambling counselling outcomes

The paper considers the influence of client characteristics and gambling behaviour as well as treatment modality on the resolution of gambling behaviour for 591 clients who sought help from the publicly funded BreakEven counselling services in the state of Victoria between 1 July 1996 and 30 June 1997. Statistical data about clients and their consultations was collected in the form of a Minimum Data Set. On their own, client demographics accounting for 12% of the variance were identified as discriminating between problem gamblers who achieved some resolution of their gambling behaviour and those whose behaviour did not change. Variables associated with gambling behaviour accounted for 10% of variance and treatment variables for 12% of variance in treatment outcomes. Collectively, the three types of data could explain 26% of the variance in problem resolution. Importantly, these findings demonstrate that the resolution of problematic gambling behaviour is affected by a complex interplay of client characteristics, their gambling behaviour and the treatment they receive. It is argued that the evaluation of treatment programs for problem gambling, and potentially all counselling programs in the primary health arena, needs to include measures from each of these domains.