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The heritability of ASDs reportedly exceeds 90% (Halgin & Whitbourne, 2007; Rutter, 2005), indicating that genetic endowment strongly influences the etiology of these disorders (Halgin & Whitbourne, 2007). Research to date has suggested chromosomes 2, 7, and 15 as possible sites for genetic abnormalities associated with ASDs (Filipek et al., 1999; Halgin & Whitbourne, 2007; Muhle, Trentacoste, & Rapin, 2004; Yonan et al., 2003). However, the genetics of autism is complex and is not yet fully known (Chuthapisith, Ruangdaraganon, Sombuntham, & Roongpraiwan, 2007; Goldberg et al., 2005; Muhle et al., 2004; Ozonoff, South, & Provencal, 2005; Rutter, 2005; Szatmari, Zwaigenbaum, & Bryson, 2004).

This paper aims to report an empirically grounded theoretical framework within which to understand the role of entrepreneurial identity development in the discovery, development and exploitation of opportunity, and to elaborate on how these identity transitions both mobilise and constrain female entrepreneurs.

A qualitative case study-based research design was used in this study. Primary and secondary data were collected from eight female participants (all of whom can be categorised as “mumpreneurs”) and analysed to inform the theoretical framework that is the foundation of the paper.

The authors describe how identity conflict, role congruence and reciprocal identity creation play a critical role in venture creation as a form of entrepreneurship. Drawing on the constructs of identification, self-verification and identity enactment, the authors build a theoretical framework for understanding entrepreneurial identity transitions in relation to opportunity-seeking behaviours.

The work is theoretical in character and based on a sample that, whilst rich in the provision of theoretical insight, is small in scope. Additionally, the sample is located in one geographical context (New Zealand) which likely has implications for the way in which the key constructs are perceived and enacted.

This paper is an attempt to integrate conceptualisations of entrepreneurial identity development with opportunity-related processes in the context of venture creation. A holistic focus on identity transitions and their relevance to perception and action in relation to opportunity (the root of entrepreneurial behaviour) is novel; at this point, it is exploratory in intention and tentative in reach.

Considers efforts to date to produce parts by direct selective laser sintering (SLS) of metals, including post processing to improve structural integrity and/or to induce a transformation. Provides a brief overview of the basic principles of SLS machine operation, and discusses materials issues affecting direct SLS of metals and the resultant properties and microstructures of the parts. Reviews results of past efforts on SLS of metal systems such as Cu‐Sn, Cu‐Solder (Pb‐Sn), Ni‐Sn, pre‐alloyed bronze (Cu‐Sn). Finally discusses more recent efforts on SLS of bronze‐nickel powder mixtures in greater detail.

The selective laser sintering (SLS) process is used to prepare test bars from Al₂O₃/polymer binder powders. Finds that binder‐coated A1₂O₃ particles formed bars that were approximately twice as strong as could be formed from mixtures of alumina and polymer binder at the same binder level and processing conditions. In mixed systems, bar strengths increased nearly in proportion to increases in polymer binder content over the 20‐40 per cent volume binder range. Parts made in any particular laser scanning mode showed optimum values for strength and density as the laser energy density was systematically increased from 2‐8cal/cm². Suggests that optima result from the counteracting influences of energy density on binder fusion and thermal degradation. The optimum energy density is mode or geometry sensitive and shifts to lower values as the laser scanning vector is reduced. Concludes that this behaviour is probably the result of the lower heat losses. Equivalently better utilization of laser energy is associated with the shorter scan vectors. Some of the SLS fabricated bars were infiltrated with colloidal alumina, fired to remove the binder, and sintered at 1,600°C to achieve alumina bars with 50 per cent relative densities, interconnected porosity, and strengths between 2 and 8MPa.

Reports that measurable amounts of polymer degradation occur during the fabrication of objects from polymer coated ceramic powders by selective laser sintering (SLS). Argues that because the binder is important in achieving strong green parts that can be handled with minimal breakage during post‐processing operations, it is essential to minimize the extent of binder losses. As the first step towards understanding the mechanisms of binder degradation, this paper presents a thermal model of the physical system, noting that the agreement between theory and experiment are good. The model is used to help determine the most influential parameters affecting binder losses during fabrication from polymer coated powders. Predicts that adjustments to laser beam diameter, laser scanning distance and gaseous environment will strongly affect polymer binder degradation during processing. Further predicts correctly that polymer degradation during SLS processing is not sensitive to the inherent degradation kinetics of the polymer.

Gives a brief overview of post‐processing of selective laser sintered (SLS) metal parts to improve structural integrity and/or to induce a material transformation. Presents results which show the effect of post‐processing liquid phase sintering temperature and time on material properties. Describes the hot isostatic pressing process, and discusses its application to SLS metal parts. Results gained from using this process show that it is suitable for achieving almost full‐density parts.

The purpose of this paper is to examine open access practices using an anthropological view of emics and etics.

An emic‐etic distinction has been theorized in anthropological research for decades. Its insider and outsider views are adopted here to provide greater understanding of open access development. The visions of various groups of academics, particularly faculty scholars and librarians, are explored to identify their different positions on open access involvement as well as the impact of those positions on open access practices.

This analysis reveals that new models of scholarly communication need to cope with existing systems and become sustainable only when the thoughts and behaviors of insiders have been fully understood by outsiders and appropriate strategies have been taken on in practice.

A theoretical framework was introduced to understand the practices of open access repositories and journal publishing.