A Bayesian-loss function-based method in assessing loss caused by ship-source oil spills in the arctic area

It is difficult to assess the risk of ship-source oil spills in Arctic waters for insurance purposes due to many unknowns and the lack of reliable data. However, maritime activities in the Arctic area continue to grow, indicating the urgent needs for the development of innovative methods to estimate loss from potential ship-source oil spills in the Arctic area. To fill this gap, we develop a hybrid Bayesian-loss function-based method to assess ship-source oil spill-related loss and implement an illustrative test on Baffin Island, Nunavut in Canada. The results confirm that our method can accurately assess loss and, subsequently, develop reliable insurance premiums for shipping activities in the Arctic area. This enables governmental and nongovernmental organizations alike to use the method as a reliable loss estimation mechanism for ship-source oil spills. Also, it is a valuable tool in designing measures for safer and more resilient Arctic shipping.     

Towards Body–Mind–Spirit Integration: East Meets West in Clinical Social Work Practice

Contemporary trends in clinical practice are moving more toward an integrative approach that views the mind, the body and the spirit as inter-connected entities. There is an increasing interest in approaches that utilize physical, cognitive, emotional and spiritual components in assessment and treatment. This paper presents an integrative body–mind–spirit approach in clinical social work practice which is informed by the Eastern philosophical traditions of Daoism, Buddhism, and Traditional Chinese Medicine. Our work with a bereaved elderly woman is presented to illustrate how the three key intervention principles: (1) promoting a dynamic balance within the individual through multi-modal intervention; (2) fostering strengths; and (3) facilitating meaning-making can be effective in helping people in a clinical setting.     

Ethnic dimensions of gender differentials in mortality in Malaysia

Higher mortality rates among males are a common occurrence across different cultures and countries. The causes of this higher mortality can be biological as well as behavioural in nature. The biological evidence applies across all nations and communities, but the behavioural causes, arising from the decision processes and communication strategies of individuals, will necessarily have cultural and environmental dimensions that change with time. This study examines gender disparities in mortality across ethnicity and time in Malaysia. The study shows that there is a consistent gender differential across time but it has widened for the Malays and the Indians and narrowed for the Chinese. Most importantly, it has widened considerably for young adults. Analysis of the leading causes of death show that young adult males are more likely to engage in risk-taking behaviour, and that the related causes and the extent of such causes vary across the ethnic groups.     

Hurka's Gamble and Methuselah's Paradox: a response to Cowen on normative population theory

The principle of total utility in population choice is seriously challenged by Hurka's Gamble and Methuselah's Paradox (and the associated Lewis-Cowen Theory). This paper defends the principle of total utility by attempting to resolve these apparent paradoxes by an opposite gamble and some other explanations.I wish to discuss elsewhere Cowen and High's challenge to the accepted solution to the St. Peterburg paradox in terms of bounded utility and their related challenge to normative population theory.     

“You are your only limit”: Appropriations and valorizations of affect in university branding

This article considers the role of affect in university branding in a context of neoliberal higher education, by way of examining the semiotic landscape of the Singapore Management University concourse. Contemporary branding often involves stimulating stakeholder/audience investments of meaning and affect into the brand, thereby appropriating consumers’ affective labour for brand‐building and communications. Adopting a discourse‐analytic approach, I examine how linguistic, visual and spatial modalities are utilized to evoke and semiotize particular affective meanings and orientations in the emplaced discourse within the university's brand space. This discourse, which includes organizational branding discourse as well as more organic student‐generated texts, becomes part of the affective regime, helping to encourage and enjoin what is deemed to be normative affective sensibilities and practices in that context. Consequently, the article also considers the kinds of affective subjectivities that are valorized, and how stakeholder/student‐subjects are interpellated in a context of neoliberal‐oriented higher education.     

Spatial variability of epibiotic assemblages on marina pontoons in Singapore

Berthing pontoons, one of the most ubiquitous structures in marinas, are known to provide recruitment substrate for a variety of marine biota but little has been reported on their capacity to support epibiotic organisms in tropical marinas, and even less is known about the factors that shape their distribution in such environments. We surveyed the epibiotic assemblages on the sides of pontoons in three Singapore marinas and examined the environmental conditions that influenced their distribution. A total of 94 taxa were recorded, with each marina hosting 43–65 taxa. Assemblages among marinas were highly distinct, and, key discriminants included components of biotic (alcyonarians, hexacorallians, bivalves, and annelids), as well as abiotic (sediment, bare area and shell fragments) origin. While the assemblage variation among marinas was influenced by local environmental conditions (e.g. water motion and sedimentation rate) and pontoon material, the variation in distribution within each marina was best explained by the distance of the pontoons from the marina’s entrance (epibiotic diversity and taxa richness were lower away from the marina entrance). Knowledge on the distribution of epibiotic assemblages on pontoons is essential to identify the factors that contribute to spatial variation and encourage the design and construction of ecologically-friendly marinas. Our findings suggest that improvements to pontoon design and layout would help to augment marina biodiversity, enhance the ecology of urbanised coasts, and mitigate development impacts.     

Quality of Life in Older Adults: Benefits from Caring Services in Hong Kong

Many older adults are in need of care. Therefore, older people would generally benefit from the use of caring services, notably including home care, residential care, nursing, and medical services. The contributory factors underlying caring services tend to be a caring perspective that aspires to sustain older peoples social relationships and real-life involvement. To gauge the benefits from various social and health services, the present study relies on a large-scale survey of 3000 older adults in Hong Kong, using quality of life as a criterion. Results showed that an older adult who had used (ordinary or enhanced) home care services for a longer time turned out to have appreciably more improvement in quality of life. Besides, those who joined an interest group more frequently were higher in quality of life, including the health domain. On the other hand, frequent use of medical and meal-to-home services were signals that reflected problems detrimental to the older users quality of life. Despite this, the quality of clinics or hospitals, as perceived by the older adult, was the most beneficial. As such, caring services that foster older adults interests, cater to their health care needs, and embody quality can have principal contribution to their users quality of life.     

Dealing with Ties in Failure Time Data

In dealing with ties in failure time data the mechanism by which the data are observed should be considered. If the data are discrete, the process is relatively simple and is determined by what is actually observed. With continuous data, ties are not supposed to occur, but they do because the data are grouped into intervals (even if only rounding intervals). In this case there is actually a non–identifiability problem which can only be resolved by modelling the process. Various reasonable modelling assumptions are investigated in this paper. They lead to better ways of dealing with ties between observed failure times and censoring times of different individuals. The current practice is to assume that the censoring times occur after all the failures with which they are tied.     

Exclusion of self evaluations in peer ratings: An impossibility and some proposals

In the popularly used ranking method of peer rating, the exclusion of the evaluations/marks given to oneselves is intuitively appealing and has been actually practiced, since a person/university/country typically is biased in favor of itself. This short paper shows that this apparently reasonable principle of self-exclusion may give unacceptable rankings. In particular, it may rank B over A despite the fact that everyone including B ranks A over B. An impossibility theorem (in two versions) is proved, showing that, if the self-awarded marks are excluded, no method of ranking can satisfy some compelling conditions like monotonicity, neutrality, and weak unanimity. Some proposals to overcome the difficulty are discussed. While no ideal proposal has been discovered, some may be practically acceptable in most cases. Received: 5 November 2000/Accepted: 15 May 2002 The authors would like to thank Maurice Salles and two anonymous referees for helpful comments. Sun's research was partially done when he worked at Max Planck Institute for Research into Economic Systems at Jena, Germany. The usual disclaimer applies.     

A zero-augmented gamma mixed model for longitudinal data with many zeros

In many occupational safety interventions, the objective is to reduce the injury incidence as well as the mean claims cost once injury has occurred. The claims cost data within a period typically contain a large proportion of zero observations (no claim). The distribution thus comprises a point mass at 0 mixed with a non-degenerate parametric component. Essentially, the likelihood function can be factorized into two orthogonal components. These two components relate respectively to the effect of covariates on the incidence of claims and the magnitude of claims, given that claims are made. Furthermore, the longitudinal nature of the intervention inherently imposes some correlation among the observations. This paper introduces a zero-augmented gamma random effects model for analysing longitudinal data with many zeros. Adopting the generalized linear mixed model (GLMM) approach reduces the original problem to the fitting of two independent GLMMs. The method is applied to evaluate the effectiveness of a workplace risk assessment teams program, trialled within the cleaning services of a Western Australian public hospital.