Body composition changes, metabolic fuel use and energy expenditure during extended fasting in subantarctic fur seal (Arctocephalus tropicalis) pups at Amsterdam Island

The fasting metabolism of 71- to 235-d-old subantarctic fur seal (Arctocephalus tropicalis) pups from Amsterdam Island, southern Indian Ocean, was investigated during the long foraging trips of their mothers. Body lipid reserves were proportionally greater in female than male pups and higher in postmoult (37%) than premoult (10%) animals. The mass-specific rate of mass loss did not differ between the sexes but was lower than observed in other species. Daily mass loss was estimated to 56% fat, 10% protein, and 34% water. The rate of protein catabolism (15 g d⁻¹) was negatively related to the size of initial lipid stores and accounted for 9% (±1%) of total energy expenditure. However, body composition changes during the fast were not equal between the sexes, with females relying more on protein catabolism than males (11% and 5% of total energy expenditure, respectively). Energy expenditure (270 kJ kg⁻¹ d⁻¹) and metabolic water production (11.5 mL kg⁻¹ d⁻¹) rates are the lowest reported for an otariid species. These results suggest that subantarctic fur seal pups greatly reduce activity levels to lower energy expenditure in addition to adopting protein-sparing metabolic pathways in order to survive the extreme fasts they must endure on Amsterdam Island.

Extended cutting angle method of global optimization

Methods of Lipschitz optimization allow one to find and confirm the global minimum of multivariate Lipschitz functions using a finite number of function evaluations. This paper extends the Cutting Angle method, in which the optimization problem is solved by building a sequence of piecewise linear underestimates of the objective function. We use a more flexible set of support functions, which yields a better underestimate of a Lipschitz objective function. An efficient algorithm for enumeration of all local minima of the underestimate is presented, along with the results of numerical experiments. One dimensional Pijavski-Shubert method arises as a special case of the proposed approach.

Risk assessment of child-victim sex offenders for extended supervision in New Zealand

Recently enacted legislation in New Zealand, the Parole (Extended Supervision) Amendment Act 2004, allows for the imposition of up to 10 years of supervision in the community for child-victim sex offenders following their release from prison. The Act requires reports to be written specifically assessing the risk of sexual re-offending against children. This study examined the application of actuarial measures used by the New Zealand Department of Corrections in these assessments, including a computer-scored instrument based on static factors (the Automated Sexual Recidivism Scale; ASRS) and a clinically-based judgement of dynamic risk factors (the SONAR). It was expected that a conservative approach would be taken in making recommendations for or against extended periods of supervision, such that a high score on either measure would predict a recommendation for extended supervision. It was found, however, that a more individualized approach was often taken, whereby a baseline assessment of risk as predicted by the ASRS was adjusted by clinicians based on SONAR ratings. Implications for the practice of risk assessment in sexual re-offending are discussed.

Extended supervision of sexual offenders in Australia and New Zealand : differences in implementation across jurisdictions

Australia and New Zealand have joined the movement of many Western societies in recent years to address a perceived gap in public safety by passing legislation allowing for extended supervision of sex offenders in the community after their release from prison. The Australian State of Victoria passed a law similar to that of New Zealand, and both laws have now been in effect for a similar period of time. Yet despite having comparable laws and approximately comparable base populations, there have been 145 extended supervision orders imposed in New Zealand and 20 such orders in Victoria. This article examines the differences in implementation and the underlying procedures used in the two jurisdictions to understand these very different outcomes. Implications for professional practice, ethics, public safety, and policy development are discussed.

Risk assessment of sexual offenders for extended supervision orders in New Zealand : basic principles and current practice

A growing number of jurisdictions in North America, the United Kingdom, and Australasia have enacted legislation allowing for special sentencing, civil commitment, and community supervision options for high risk sexual offenders. In New Zealand, one example of this concern for public protection is the Parole (Extended Supervision) Amendment Act 2004, which provides for additional supervision of sexual offenders with child victims for up to 10 years after their release from prison. Recent experience with expert evidence and judicial decision making in such cases suggests that those involved in the process might benefit from a more thorough understanding of the current state of sexual offender risk assessment that can be provided by mental health professionals.

Short term reoffending by child victim sex offenders in New Zealand : a comparison of those with and without extended supervision

Sexual offenders with child victims in New Zealand who are considered at high risk for reoffending are subject to an Extended Supervision Order. This allows for a period of supervision of up to ten years following release to the community. The present study examined 89 offenders given Extended Supervision Orders over the 33 month period since the legislation was enacted. All types of reoffending resulting in criminal convictions by this group were included. A matched sample of sexual offenders with child victims released prior to this legislation and a sample of offenders judged to be lower risk were compared to those under extended supervision. Offenders under extended supervision reoffended faster and at a higher rate for both sexual and general offences than those deemed lower risk, but at a lower rate than pre-extended supervision high risk offenders. The relationship between specialist treatment programme attendance and completion, actuarial risk level, and recidivism in the extended supervision sample were also investigated. These variables were found not to be significant predictors of sexual recidivism.

The development of a neo-industrial organisation methodology for describing and comparing structural and behavioural characteristics of construction supply chains

The model draws from theories of industrial economics and supply chain literature, and is an attempt to advance the construction supply chain field through the development of an industrial organisational methodology to describe construction supply chains.
Empirical studies have examined the industrial organisation of other industries, typically forming descriptions based upon vertical integration and horizontal market concentration. A review of the trends in the supply chain literature indicate there is a need to develop a model to describe the industrial organisation of the construction industry through supply chain structure. The merging of the supply chain concept with the industrial organisation model as a methodology for understanding the structural characteristics is an important contribution to construction economic theory. The paper begins to develop a language for describing the structure and behaviour of supply chains specific to the construction industry and is so doing suggests a neo-industrial organisation approach.

A reflexive capability model for sustainable e-business environments in construction supply chains

Despite the increasing significance of e-business worldwide and construction market leaders developing innovative e-business applications, the widespread uptake in the Australian construction industry is lagging. There has been considerable literature related to e-business adoption focusing on drivers and barriers to adoption. However, there has not been an investigation that has applied fundamental supply chain theory concepts. In this paper a reflexive capability model for the individual firm in relation to e-business is developed which relies upon merging economic and social practices through an industrial organization economic theoretical lens and social science theories of communication. The reflexive
capability model proposed within this paper describes a framework for theorization of the different degrees of e-business adoption exhibited by individual firm’s and accounts for social-cultural, organisational-structural, communicative and economic (market and supply
chain) barriers, influences and pressures to adopt e-business.The model is proposed for the construction supply chain to enable awareness, engagement and realization of e-business technology and achieve long term construction e-business sustainability.

Structures, processes and performance of corporate and business ethics in supply chains

The objective of this paper is to introduce and describe a conceptual framework of firms' corporate and business ethics in supply chains in terms of ethical structures, ethical processes and ethical performance. A framework is outlined and positioned incorporating an ethical frame of reference in the field of Supply Chain Management (SCM). A number of areas and sub-areas of firms' corporate and business ethics are framed in the context of supply chains. The introduced framework should be seen as a seed for further development and refinement in the field of SCM. It provides opportunities for further research of ethical concerns in supply chains.