Damage rate is a predictor of fatigue life and creep strain rate in fatigue of tensile human cortical bone samples

We present results on the growth of damage in 29 fatigue tests of human femoral cortical bone from four individuals, aged 53–79. In these tests we examine the interdependency of stress, cycles to failure, rate of creep strain, and rate of modulus loss. The behavior of creep rates has been reported recently for the same donors as an effect of stress and cycles (Cotton, J. R., Zioupos, P., Winwood, K., and Taylor, M., 2003, "Analysis of Creep Strain During Tensile Fatigue of Cortical Bone," J. Biomech. 36, pp. 943–949). In the present paper we first examine how the evolution of damage (drop in modulus per cycle) is associated with the stress level or the "normalized stress" level (stress divided by specimen modulus), and results show the rate of modulus loss fits better as a function of normalized stress. However, we find here that even better correlations can be established between either the cycles to failure or creep rates versus rates of damage than any of these three measures versus normalized stress. The data indicate that damage rates can be excellent predictors of fatigue life and creep strain rates in tensile fatigue of human cortical bone for use in practical problems and computer simulations.

Perspectives on experiences of innovation: the development of an assessment methodology appropriate to construction project organizations

The UK construction industry is in the process of trying to adopt a new culture based on the large-scale take up of innovative practices. Through the Demonstration Project process many organizations are implementing changed practices and learning from the experiences of others. This is probably the largest experiment in innovation in any industry in recent times. The long-term success will be measured by the effectiveness of embedding the new practices in the organization. As yet there is no recognized approach to measuring the receptivity of the organization to the innovation process as an indication of the likelihood of long-term development. The development of an appropriate approach is described here. Existing approaches to the measurement of the take up of innovation were reviewed and where appropriate used as the base for the development of a questionnaire. The questionnaire could be applicable to multi-organizational construction project situations such that the output could determine an individual organization's innovative practices via an innovation scorecard, a project team's approach or it could be used to survey a wide cross-section of the industry.

Relatives of patients with severe mental disorders: unique traits and experiences of primary, nonprimary, and lone caregivers

The authors examined caregivers' characteristics and experiences. Previously suggested principles for identifying the primary caregiver in 22 multiple-caregiver families were assessed, but none reliably distinguished the primary caregiver. The authors then compared primary (n = 22), nonprimary (n = 22), and lone caregivers' (n = 43) appraisals of caregiving and psychological distress. Lone and primary caregivers' experiences were similar. but nonprimary caregivers' experiences were less adverse. Despite these findings, greater psyhcological distress in primary caregivers indicated greater psychological distress in nonprimary caregivers.

Attribution and the effects of expectancy: how beliefs can influence the experiences of smoking cessation

Research on smoking cessation has found consistencies and similarities during abstinence, but also that the specific signs and symptoms and their intensity vary greatly from individual to individual. One possible source of this variation is the cognitions associated with quitting. We investigated the experiences and associated cognitions in normal cessation by asking quitting smokers to rate their experiences on a questionnaire and to indicate the most likely reason for each experience. Statistical analyses confirmed that attributions to abstinence were significantly higher for increased negative experiences, and there were significantly more reattributions than would be found by chance for items associated with smoking abstinence. Significantly more attributions to abstinence were made by clinic attendees and significantly more attributions of negative experiences to abstinence were made by unaided quitters using self-help materials. These results can be interpreted in the context of attribution theory; quitters may use the cognitions available to them to attribute their negative experiences to quitting. Consequently, counsellors could use cognitive therapy to alter their clients' expectations and explanations of their experiences, and emphasise the positive outcomes of cessation. (C) 2002 Elsevier Science Ltd. All rights reserved.

Operatives’ experiences of cultural diversity on Australian construction sites

Construction sites are among Australia's most culturally diverse workplaces. A survey of 1155 construction operatives on Australian construction sites investigated, for the first time, the extent of this diversity and how it is experienced by workers. Results show that while cultural diversity presents organizational challenges by segregating the workforce, operatives' cultural groups also perform positive functions such as maintaining positive bonds among group members and providing group support and safe havens. While there broadly appears to be equality of opportunity for all cultural groups, there is significant evidence of differential treatment for some groups, particularly in relation to accessing higher paying jobs, offensive graffiti and racist joke telling. Language barriers are one of the major challenges affecting work and social relations between different cultural groups and there is evidence that this has a detrimental impact upon safety.

The strength of the system and my experiences of it, was that in fact, oddly enough, it was actually a very collaborative enterprise already

Video:35 mins, 2006. The video shows a group of performers in a studio and seminar situation. Individually addressing the camera they offer personal views and experiences of their own art production in relation to the institution, while reflecting on their role as teachers. The performance scripts mainly originate from a series of real interviews with a diverse group of artist teachers, who emphasise the collaborative, performative and subversive nature of teaching. These views may seems symptomatic for contemporary art practices, but are ultimately antagonistic to the ongoing commodification of the system of art education.

Environmental evaluation of agri-environment schemes using participatory approaches: experiences of testing the Agri-Environmental Footprint Index

The Agri-Environment Footprint Index (AFI) has been developed as a generic methodology to assess changes in the overall environmental impacts from agriculture at the farm level and to assist in the evaluation of European agri-environmental schemes (AES). The methodology is based on multicriteria analysis (MCA) and involves stakeholder participation to provide a locally customised evaluation based on weighted environmental indicators. The methodology was subjected to a feasibility assessment in a series of case studies across the EU. The AFI approach was able to measure significant differences in environmental status between farms that participated in an AES and nonparticipants. Wider environmental concerns, beyond the scheme objectives, were also considered in some case studies and the benefits for identification of unintentional (and often beneficial) impacts of AESs are presented. The participatory approach to AES valuation proved efficient in different environments and administrative contexts. The approach proved to be appropriate for environmental evaluation of complex agri-environment systems and can complement any evaluation conducted under the Common Monitoring and Evaluation Framework. The applicability of the AFI in routine monitoring of AES impacts and in providing feedback to improve policy design is discussed.