Geometric and material constraints in parametric modelling : the design to fabrication process

Parametric modelling, commonly used in the automotive and aerospace industries, has recently been adopted in the architecture and construction fields. The ability to design small repeatable components and apply them to a larger governing surface geometry is one area of parametric modelling that has great design potential. This two level modelling control, of component and overall surface, can allow designers to explore new types of form generation subject to parametric constraints. This paper reports on the design to fabrication process using repeatable components over a governing or carrier surface. The paper reports on our study of the requirements and possible solutions for successfully controlling a repeatable element, known as a Representative Volumetric Element (RVE), using geometric parameters of a larger governing surface geometry and material properties. This modelling process, coupled with Rapid
Manufacturing (RM) and Computer Numerically Controlled (CNC) machines has the potential to significantly reduce the interface between design and fabrication.

Utilizing and adapting leisure constraints models to enhance 'short-break' vacations : case study of Melbourne, Australia

Short-break tourism is likely to continue as a popular vacation for time-, income- and special interest conscious tourists. With the competition for visitors, destinations need to consider the constraints and facilitators associated with tourist decision-making for short-break vacations. This study presents the application of a leisure model toward better explaining such vacation choices. This study found key constraints, such as time and awareness, inhibited visitors from visiting attractions. The importance and influence of word-of-mouth recommendations plays a key role in gaining the attention of future visitors.

A practical approach to achieving agility : a theory of constraints perspective

This article documents an action research (AR) project aimed at identifying the practical steps needed to become an agile manufacturer through a combination of the theory of constraints (TOC) and resource- based view (RBV) approaches in a small to medium enterprise (SME) in the Australian manufacturing sector. To date, lean production has been highlighted as a possible catalyst for creating an agile manufacturer, despite the evidence suggesting that lean manufacturing lacks the responsiveness and adaptability to effectively handle a rapidly changing market place and only works well in a stable environment. A more flexible system of production is required to fully encompass the agile characteristics needed to attain a competitive advantage. This research provides empirical evidence that the TOC perspective can be used as a practical approach for becoming an agile manufacturer. The study provides a workable approach for small firms to achieve ‘Agility’ in practice.

The transnational corporation and new corporate citizenship theory : a critical analysis

A recent conceptualisation of corporate citizenship by Matten and Crane (2005) shifts focus onto the corporation's role in providing individuals with the rights they are entitled to as citizens. This expanded corporate role is depicted as filling an institutional vacuum resulting from the withdrawal of the state. Marking an innovation to the corporate citizenship literature, we devise a three-part analytical framework from political institutionalism to question the concept's ideological and empirical groundings. Incorporating a constrained game theory perspective, we use an example of the provision of Western corporate services by low-labour-cost nation-states to argue that the concept as strategy would in some circumstances exacerbate the implications of globalisation on individual citizenship rights. The analytical framework has application for research directed toward proposals to extend the reach of corporations in traditional public services and, more generally, for studies of corporate responsibilities. Future research on corporate citizenship would be strengthened in recognising, as we do, institutional incentives, constraints, decision-making modes and resources as used by the transnational corporation.

Does accounting choice influence US investment in non-US companies? Evidence from US institutional investment in Australian companies

Previous research asserts that companies that choose accounting methods more familiar to investors reduce information asymmetry and increase credibility of their financial statements to those investors, thereby attracting higher levels of foreign investment. This study examines the variation in accounting policies associated with institutional investment in Australian equity. The results suggest that large US institutional holdings in Australian companies are associated with American Depositary Receipt listing and, incrementally, choice of accounting methods that conform to US Generally Accepted Accounting Principles (GAAP). Although making accounting choices in compliance with US GAAP is significantly associated with higher levels of institutional ownership in a statistical sense, examination of the specific differences in accounting choices suggests that the differences in informational content are relatively minor.

Evolutionary psychology and the rehabilitation of offenders : constraints and consequences

The mainstream view in criminology and correctional psychology is that evolutionary perspectives have little to offer researchers or practitioners and may in fact lead to overly reductionist and crude responses to the complex issue of crime and its consequences. However, in our view all the major evolutionary approaches to the explanation of human behavior have something of value to contribute, with niche construction providing a particularly useful lens upon crime and its management. In this paper we analyze the concept of rehabilitation and describe the key features of effective rehabilitation. We argue that niche construction is responsive to the cognitive versatility and behavioral flexibility of human beings and can also accommodate the important role of social and cultural scaffolding in the rehabilitation process.

Time and energy constraints in demanding phases of the annual cycle : an example of time limitation in refuelling migratory swans

The daily metabolizable energy intake of an animal is potentially limited by either the available feeding time or by its capacity to process energy. Animals are generally considered not to be time-limited but rather to be energy-processing-limited. This is concluded from the common observation that an animal's feeding time per day increases with a decrease in food density. We argue that such changes in feeding time are in theory also expected when no constraints are operating. Thus, a study of the constraints on energy intakes of free-living animals should be performed during demanding phases of the year. As an example, we collected data on time and energy budgets of Bewick's swan (Cygnus columbianus bewickii) refuelling during migration on fennel pondweed (Potamogeton pectinatus) tubers in two years differing two-fold in tuber biomass density. As predicted by time limitation, the feeding time (defined as the time with the head submerged) did not change in response to a change in food biomass density, both within and between years (averaging 12.2 h d⁻¹). Contrary to energy-processing limitation, and again in line with time limitation, the daily metabolizable energy intake varied, being greater in the year with high than in the year with low food densities. We conclude that more studies are needed of animals operating under demanding conditions before it can be assessed whether free-living animals are generally energy-processing- or time-limited.

Rethinking ethics review as institutional discourse

In this article, the authors trace the emergence of an institutional discourse of ethical research and interrogate its effects in constituting what ethical research is taken to be and how ethical researchers are configured. They illuminate the dissonance between this regime of truth and research practice and the implications for the injunction to respect others, illustrating their case with instances from their interview study with anorexic teenage girls. The authors propose that conceptualising the regulation of research ethics as an institutional discourse opens up the possibility for asserting counterdiscourses that place relational ethics at the center of moral decision making in research.

The establishment of large private nature reserves by conservation NGOs : key factors for successful implementation

Private nature reserves created by nongovernmental organizations (NGOs) are increasing, and their growing number and extent means that they can potentially contribute to biodiversity goals at a global scale. However, the success of these reserves depends on the legal, economic and institutional conditions framing their creation and management. We explored these conditions, and the opportunities and challenges facing conservation organizations in managing private nature reserves, across several countries, with an emphasis on Australia. Results from 17 semi-structured interviews with representatives of private conservation organizations indicated that while private reserves may enhance the conservation estate, challenges remain. Legal frameworks, especially tenure and economic laws, vary across and within countries, presenting conservation organizations with significant opportunities or constraints to owning and/or managing private nature reserves. Many acquired land without strategic acquisition procedures and secured funding for property acquisition but not management, affecting the long-term maintenance of properties. Other typical problems were tied to the institutional capacity of the organizations. Greater planning within organizations, especially financial planning, is required and NGOs must understand opportunities and constraints present in legislative frameworks at the outset. Organizations must establish their expertise gaps and address them. To this end, partnerships between organizations and/or with government can prove critical.