A Dexterous Workspace Optimization for Ten Different Types of General Stewart-Gough Platforms

In this chapter, a dexterous workspace optimization is performed for ten different types of 6-Degrees-Of-Freedom (DOF) General Stewart-Gough Platforms (GSPs). The optimization aims to find the optimum radius of the circumferential circle and separation angles between adjacent vertices of base and moving platforms in order to maximize both the dexterities and workspaces of the manipulators subject to geometric constraints. Particle Swarm Optimization (PSO), increasingly being applied to engineering applications, is used as the optimization algorithm. Finally, the optimization results for ten different types of 6-DOF GSPs are compared to each other in terms of kinematic performances

Challenges Facing Asian Sex Workers in Western Australia: Implications for Health Promotion and Support Services

Introduction: Asian sex workers are a significant part of the Australian sex industry. Criminal laws, racism, isolation, poor English language skills and stigma and discrimination combine to increase the vulnerability of Asian sex workers in Australia. To inform service delivery and potential legislative reform, we undertook a study of sex worker health and safety in Western Australia with a focus on Asian sex workers. Methods: This was a mixed methods study in which peer researchers played an essential role. We undertook a survey (available online and in paper form and translated into three languages other than English), semi-structured interviews with sex workers, and interviews with key advisors. Results: In our study, Asian sex workers were older, had lower levels of education, more likely to have sex work as their main source of income, work longer hours and work exclusively in a shop-front massage parlor compared to their non-Asian counterparts. The vast majority of Asian sex workers in our study said they had poor English language skills and the greatest proportion spoke Chinese languages. Sex work had a positive impact on the well-being of many respondents, and their level of psychological distress was similar to the general Australian population. Stress and "bad clients" were common negative impacts of sex work. Asian study participants were less likely than their non-Asian counterparts to smoke, undertake risky drinking or use illicit drugs. A similar proportion of Asian sex workers reported being assaulted compared to their non-Asian counterparts. Discussion/Conclusion: The major challenges facing Asian sex workers in WA seem to be stigma and discrimination, stress, social isolation, and confusion about their legal standing leading to a fear of authorities, particularly the police. Our findings support the need for enhanced targeted peer-based health promotion outreach services for Asian sex workers, increased Asian language services in sexual health clinics and decriminalization of sex work

Caretaker Expectations Regarding the Management of Pediatric Asthma Scale (CE)

Asthma, a very serious health condition in the United States, results in morbidity and mortality that disproportionately affect children living in inner-city areas. The National Cooperative Inner-City Asthma Study (NCICAS) examined a variety of factors related to pediatric asthma. The CE scale was developed in the NCICAS study and is designed to assess three psychological factors in caretakers of children with asthma (self-efficacy, outcome expectations, and response difficulty). The scale is provided here and background is available in: Holden, G., Wade, S., Mitchell, H., Ewart, C., Islam, S. (1998). Caretaker expectations and the management of pediatric asthma in the inner-city: A scale development study. Social Work Research, 22, 51-59. or from the lead author: [email protected] by grants UO1 A1-30751, A1-30752, A1-30756, A1-30772, A1-30773-01, A1-30777, A1-30779, A1-30780, NO1 A1-15105 from the National Institute of Allergy and Infectious Disease (National Institutes of Health, Bethesda, MD)

Women secondary head teachers in England: where are they now?

The underrepresentation of women in secondary school headship in England and elsewhere is an early and longstanding theme in the women and gender in educational leadership literature. The purpose of this article is to report findings from a statistical survey of secondary school head teachers across England. Data available in the public domain on school websites have been collated during a single academic year to present a new picture of where women lead secondary schools in England. Mapping the distribution of women by local authority continues to show considerable unevenness across the country. This article argues that a geographical perspective still has value. It might influence the mobilization of resources to targeted areas and ultimately result in women’s proportionate representation in school leadership. Alongside this is a need for schools and academy trusts to comply with the Public Sector Equality Duty

Drug use among British Bangladeshis in London: a macro-structural perspective focusing on disadvantages contributing to individuals’ drug use trajectories and engagement with treatment services

Aims: The main aim of our study was to produce an understanding of factors contributing to drug-using trajectories among men and women from a Bangladeshi background living in East London. Methods: Fifteen semi-structured, one-to-one interviews were conducted with male and female Bangladeshi drug users accessing treatment services. A macro-structural lens was adopted to interpret participants’ accounts of their drug use and explored the intersecting factors that at a micro, meso, and macro level impacted on their drug-using trajectories. Findings: Problem drug use (heroin and crack cocaine) among participants was the result of inter-related factors such as their friendship networks and the embeddedness of drugs in drug-using networks, the structural disadvantages participants experienced, and the need for concealment of their drug use which impacted on participants’ effective utilisation of drug treatment services. Problem drug use was a functional way of responding to and dealing with social, economic, and cultural disconnection from mainstream institutions as participants faced severe multiple disadvantages engendering stigma and shame. Conclusions: We propose a ‘life-focused’ intervention aimed at creating extra opportunities and making critically-needed resources available in the marginalised environment of the study’s participants, which are key to restoring and maintaining agency and sustaining well-being

Triassic sedimentation and postaccretionary crustal evolution along the Solonker suture zone in Inner Mongolia, China

Detrital zircon U-Pb dating of the Xingfuzhilu Formation in southern Inner Mongolia yields a maximum depositional age of around 220 Ma. The predominantly Permian and Triassic zircons are characterized by oscillatory zoning and euhedral shapes, with mostly positive zircon εHf(t) values (+2.0 to +16.4), indicating that they were derived from a proximal magmatic source. Early-Middle Paleozoic zircons have variable zircon εHf(t) values from −6.2 to +11.2 and are characterized by weak oscillatory zoning and subhedral-subrounded shapes, suggesting that the sources are a proximal magmatic arc, possibly mixed with components of the Ondor Sum magmatic arc and the magmatic arc at the northern margin of the North China Craton. The remnants of Precambrian blocks in the southeastern Central Asian Orogenic Belt (CAOB), and the North China Craton may also have been a minor source region for the Xingfuzhilu succession. These results, combined with regional data, indicate that a closing remnant ocean basin or narrow seaway possibly existed in the Middle Permian (Guadalupian) immediately prior to final collision of the CAOB and closure of the Paleo-Asian Ocean. Subsequent collision resulted in the crustal uplift and thickening along the Solonker suture zone, accompanied by possible slab break-off and lithospheric delamination during the Latest Permian to Middle Triassic. The resultant orogen in the Late Triassic underwent exhumation and denudation of rocks in response to the postorogenic collapse and regional extension. Vertical crustal growth in the Triassic is documented by detrital zircons from the Xingfuzhilu Formation and appears to have been widespread across entire eastern CAOB

Blaming the victim: assessment, examinations, and the responsibilisation of students and teachers in neo-liberal governance

Historically, for a period of a hundred years or more from the 1860s to the 1960s, assessment developed as an educational technology for selecting and certificating small numbers of individual students. This process was largely focused on excluding the majority. Over the last 30–40 years, the focus and purpose of assessment has changed. The emphasis is now on education for all and the development of a fit-for-purpose assessment system as a system, that is, as part of an integrated approach to national human resource development. These changes have been both driven by, and contributed to, the development of the knowledge economy and neo-liberalism. Students and teachers have been ‘responsibilised’ for the quality and outcomes of education, with assessment and examinations providing the quintessential vehicle for individualising and responsibilising success and failure in relation to achievement and social mobility