An Investigation of Uncertainty and Sensitivity Analysis Techniques for Computer Models

Many different techniques have been proposed for performing uncertainty and sensitivity analyses on computer models for complex processes. The objective of the present study is to investigate the applicability of three widely used techniques to three computer models having large uncertainties and varying degrees of complexity in order to highlight some of the problem areas that must be addressed in actual applications. The following approaches to uncertainty and sensitivity analysis are considered: (1) response surface methodology based on input determined from a fractional factorial design; (2) Latin hypercube sampling with and without regression analysis; and (3) differential analysis. These techniques are investigated with respect to (1) ease of implementation, (2) flexibility, (3) estimation of the cumulative distribution function of the output, and (4) adaptability to different methods of sensitivity analysis. With respect to these criteria, the technique using Latin hypercube sampling and regression analysis had the best overall performance. The models used in the investigation are well documented, thus making it possible for researchers to make comparisons of other techniques with the results in this study.     

The Environment as a Supply Chain Management Issue

This paper investigates the issues for purchasing and supply chain managers in the context of environmentally-sound management.
The discussion begins with an analysis of relevant consumer attitudes, legislation and concepts in environmentally-sound management (life-cycle analysis, waste management, product stewardship, etc.), linking them to supply-chain management practices such as vendor assessment, total quality management, lean supply and collaborative supply strategies. In each case, parallels are drawn between established practice and new imperatives that require innovative solutions from managers.
The paper then explores the results of fresh field research with five major UK companies, identifying the different ways in which the challenges introduced above are being faced, and adding some extra perspectives to the debate already covered. The discussion concludes with a projection of common issues and ideas for areas of supply chain management that might profit from better environmentally-sound approaches.     

“When You Wake Up It'll All Be Over”: Communication in the Anaesthetic Room

This article focuses upon communication between medical professionals and patients within anaesthetic rooms—rooms in which patients are anaesthetized prior to entry into operating theaters. The most closely related field of sociological study is research on surgery, which tends to consider anaesthesia as a secondary specialism. Using video data collected from anaesthetic rooms and operating theaters in the United Kingdom, this article suggests that, while the processes that have been identified in surgery have some relevance for anaesthetic practice, there are important variations and differing interactional contingencies which need to be taken into account. In particular, the concept of “depersonalization” or “objectification” becomes particularly problematic in anaesthesia in ways that have not been broached in the study of surgery.     

Disabled men with muscular dystrophy negotiate gender

Disability is often portrayed as a one-dimensional category devoid of further intersections. Work which has addressed the intersection of disability and male gender has rarely considered different types of disability or impairment, or foregrounded the experiences of disabled men themselves. This article is based on empirical work carried out in England with men who have Duchenne muscular dystrophy (DMD). We explored with participants their sense of themselves as men and their commonalities and differences with other men. Findings suggest that men with DMD claim, reject and redefine what it meant to them to be men. Doing gender was often heavily reliant on the availability and permission of others. Our study highlights the usefulness of exploring gender with men with particular experiences of disability and of looking at how this might change over a life course, especially when the nature and extent of the life course is a precarious one.     

“A game of two halves?” Understanding the process and outcomes of English care home closures: Qualitative and quantitative perspectives

With care services increasingly delivered via a market there is always a risk that care homes could fail financially or struggle in terms of quality, ultimately having to close. When this happens, the received wisdom is that subsequent relocation can be detrimental to the health and well‐being of older residents (possibly even culminating in increased mortality). However, there is very little formal evidence in the United Kingdom (UK) or beyond to guide policymakers and local leaders when undertaking such sensitive work. Against this background, this article reports findings from an independent evaluation of what is believed to be the largest care home closure program in the UK (and possibly beyond). This consisted of qualitative interviews with older people, families, care staff, and social work assessors during the closure process in one case study care home and one linked day center, as well as self‐reported health and quality of life data for older people from 13 homes/linked day centers at initial assessment, 28 days after moving and at 12‐month follow up. The study is significant in presenting public data about such a contested topic from such a large‐scale closure process, in its focus on both process and outcomes, in its mixed‐methods approach, and in its engagement with older people, families, and care staff alongside the use of more formal outcome measures. Despite significant distress part‐way through the process, the article suggests that outcomes either stayed the same or improved for most of our sample up to a year after moving to new services. Care homes closures may thus be a “tale of two halves”, with inevitable distress during the closure but, if done well, with scope for improved outcomes for some people in the longer term. These findings are crucial for current policy and practice given that the risk of major closures seems to be growing and given that there is virtually no prior research on which to base local or national closure processes. While some of this research is specific to England, the underlying issue of care home closures and lessons learned around good practice will also apply to other countries.     

Midwives’ personal use of complementary and alternative medicine (CAM) influences their recommendations to women experiencing a post-date pregnancy

Complementary and Alternative Medicine (CAM) have increasingly been used by pregnant women with a steady rise in interest by midwives. Literature describing CAM and self-help options midwives recommend to women experiencing a post-date pregnancy is sparse. This study aimed to investigate if Australian midwives’ personal CAM use impacts on discussions and recommendations of CAM/Self-help strategies.

In-migration,customary land tenure,and complexity: exploring the relationship between changing land tenure norms and differentiated migrant livelihoods in Brong Ahafo,Ghana

This article focuses on the relationship between in-migration from Northern Ghana and changing land tenure norms in Ghana’s central “transition zone” in Brong Ahafo Region. Using the complex adaptive systems (CAS) theoretical framework, it theorizes this relationship as part of a wider set of “co-evolving” social and environmental conditions across Brong Ahafo. It presents new qualitative research findings which show differentiated livelihood trajectories for Northern Ghanaian migrant farmers in Brong Ahafo in three case study sites in different districts and links these to migrants’ diverse land tenure arrangements under customary tenure regimes in Brong Ahafo. I argue that differentiated outcomes for migrants at rural destinations have implications for the extent to which out-migration from environmentally marginal regions such as Northern Ghana can be viewed as a form of “adaptation” to environmental change.     

Experiences of Urban Environmental Conditions in Socially and Economically Diverse Neighborhoods

Environmental conditions can vary widely in urban areas. Temperature, green space, air quality, and other parameters may have different patterns among and within cities. These conditions may also be experienced and perceived by residents in different ways, with implications for community development and social justice in the context of environmental change. This study examines in-depth interviews (N = 20) with residents from socially and economically diverse neighborhoods to understand this variability at a more meaningful scale than typically examined in the literature. Implications for social work, community development, and multidisciplinary efforts in the pressing area of environmental change are discussed.     

Ethnicity as skill: immigrant employment hierarchies in Norwegian low-wage labour markets

Immigrants are often concentrated in particular, often low-waged, segments of the labour market and employers tend to assume that immigrants posit (soft) skills which make them particularly suited for specific tasks. Less scholarly attention has been given to the real and perceived content of these skills and how employers may shift their view over time. We contribute to the literature by examining changing ethnic employment hierarchies in two immigrant-intensive labour markets in Norway. Drawing on qualitative data from the hotel and fish processing industries, we describe, first, how different ethnic groups are allocated into specific jobs forming a clear hierarchy in the eyes of employers, and, second, how employers’ preferences for particular groups change as new immigrants enter the labour market. Theoretically, we develop the concept of ‘ethnicity as skill’, which points to the tendency among employers to equate ethnic group membership with a set of informal qualifications.