958 research outputs found
Race and Socioeconomic Status Differences in Study Abroad Participation: The Role of Habitus, Social Networks, and Cultural Capital
This study examines how race and socioeconomic status contribute to disparities in study abroad participation. Our mixed methods approach provides a broad overview of the selection process into study abroad using national data. It also provides a nuanced understanding of the mechanisms that perpetuate inequality among Black and lower class students. Both quantitative and qualitative results show that studentsâ habits, social networks, and cultural capital shape their study abroad experiences. We find that students with a positive predisposition toward internationalization (having foreign-born parents and/or experiencing different cultures overseas) were more likely to study abroad.Whites and high socioeconomic status students were also more likely to have family and friends who valued study abroad than were lower socioeconomic status and Black students. These advantaged students were better able to acquire and use cultural capital when accessing information from institutional agents. They were also more likely to possess the knowledge and background that complied with institutional standards. These factors contributed significantly to the race and class disparities in study abroad participation. This study contributes to the scant literature on study abroad by revealing mechanisms through which the reproduction of inequality is shaped in the university setting. We argue that patterns found to apply to this process are likely to take place in other processes in higher education as well
A comparison of simple methods to incorporate material temperature dependency in the Greenâs function method for estimating transient thermal stresses in thick-walled power plant components
The threat of thermal fatigue is an increasing concern for thermal power plant operators due to the increasing tendency to adopt âtwo-shiftingâ operating procedures. Thermal plants are likely to remain part of the energy portfolio for the foreseeable future and are under societal pressures to generate in a highly flexible and efficient manner. The Greenâs function method offers a flexible approach to determine reference elastic solutions for transient thermal stress problems. In order to simplify integration, it is often assumed that Greenâs functions (derived from finite element unit temperature step solutions) are temperature independent (this is not the case due to the temperature dependency of material parameters). The present work offers a simple method to approximate a materialâs temperature dependency using multiple reference unit solutions and an interpolation procedure. Thermal stress histories are predicted and compared for realistic temperature cycles using distinct techniques. The proposed interpolation method generally performs as well as (if not better) than the optimum single Greenâs function or the previously-suggested weighting function technique (particularly for large temperature increments). Coefficients of determination are typically above 0.96, and peak stress differences between true and predicted datasets are always less than 10 MPa
Initiation of ligament engineering using novel silk scaffolds
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Validity and repeatability of a simple index derived from the short physical activity questionnaire used in the European Prospective Investigation into Cancer and Nutrition (EPIC) study
Original article can be found at: http://journals.cambridge.org/action/displayJournal?jid=PHN Copyright The Authors. DOI: 10.1079/PHN2002439Peer reviewe
Evaluation of an intensive treatment program for disrupted patient-staff relationships in psychiatry.
Purpose: Some patients in psychiatric treatment are considered extremely difficult to treat because of the disruptive nature of their relationships with treatment staff. In this paper, we describe and evaluate a specialist inpatient treatment program for these patients. Design and Methods: Data were collected from medical records and daily reports of patients (n = 108). Pretest-posttest measurements were used to evaluate the treatment. Findings: The main treatment method consists of the provision of safety, structure, and cooperation. Treatment results show statistically significant changes from admittance to discharge. Practice Implications: The collaborative and consistent manner in which nurses approach the patients is crucial for quality of care. © 2013 Wiley Periodicals, Inc
Efficient Design and Analysis of Lightweight Reinforced Core Sandwich and PRSEUS Structures
Design, analysis, and sizing methods for two novel structural panel concepts have been developed and incorporated into the HyperSizer Structural Sizing Software. Reinforced Core Sandwich (RCS) panels consist of a foam core with reinforcing composite webs connecting composite facesheets. Boeing s Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS) panels use a pultruded unidirectional composite rod to provide axial stiffness along with integrated transverse frames and stitching. Both of these structural concepts are ovencured and have shown great promise applications in lightweight structures, but have suffered from the lack of efficient sizing capabilities similar to those that exist for honeycomb sandwich, foam sandwich, hat stiffened, and other, more traditional concepts. Now, with accurate design methods for RCS and PRSEUS panels available in HyperSizer, these concepts can be traded and used in designs as is done with the more traditional structural concepts. The methods developed to enable sizing of RCS and PRSEUS are outlined, as are results showing the validity and utility of the methods. Applications include several large NASA heavy lift launch vehicle structures
Reconceptualising temporality in young lives: exploring young peopleâs current and future livelihoods in AIDS-affected southern Africa
In recent years, anxieties have been expressed that the impacts of southern Africa's AIDS pandemic on young people today will damage their future livelihood prospects. Geographers have been remarkably reluctant to explore young people's future livelihoods, inspired by a concern to view young people as human beings, worthy of study in their own right rather than mere human becomings, of interest only as âadults in the makingâ. Yet there is growing acknowledgement that young people, like older people, are always both âbeing and becomingâ. The connections between current and future lives merit much greater attention, both because experiences and actions in childhood and youth undoubtedly shape the futures of individuals and wider society, but also because young people's thoughts and actions are so often geared to the future, and this future orientation shapes their present worlds. This paper reports on research that set out to explore links between the impacts of AIDS and young people's livelihood prospects. Intensive case study research was undertaken, combining participatory methods and life history interviews with young people aged 10â24 in two villages, one in southern Malawi and the other in the mountains of Lesotho. By theorising a temporal dimension to de Haan and Zoomersâ concept of livelihood trajectories, the paper focuses on the ways in which young people respond to both the immediate sustenance requirements of themselves and their households and their need to accrue assets for future livelihoods. Some young people's trajectories appear to be disturbed by the influence of AIDS, but with no systematic patterns. Beyond addressing empirical questions concerning the impacts of AIDS, the paper contributes to our understanding of how livelihoods are produced and to the conceptualisation of youth transitions as produced through the iteration of present and future
Data Safe Havens and Trust: Toward a Common Understanding of Trusted Research Platforms for Governing Secure and Ethical Health Research
In parallel with the advances in big data-driven clinical research, the data safe haven concept has evolved over the last decade. It has led to the development of a framework to support the secure handling of health care information used for clinical research that balances compliance with legal and regulatory controls and ethical requirements while engaging with the public as a partner in its governance. We describe the evolution of 4 separately developed clinical research platforms into services throughout the United Kingdom-wide Farr Institute and their common deployment features in practice. The Farr Institute is a case study from which we propose a common definition of data safe havens as trusted platforms for clinical academic research. We use this common definition to discuss the challenges and dilemmas faced by the clinical academic research community, to help promote a consistent understanding of them and how they might best be handled in practice. We conclude by questioning whether the common definition represents a safe and trustworthy model for conducting clinical research that can stand the test of time and ongoing technical advances while paying heed to evolving public and professional concerns
Using nasal sprays to prevent respiratory tract infections: A qualitative study of online consumer reviews and primary care patient interviews
OBJECTIVES: Nasal sprays could be a promising approach to preventing respiratory tract infections (RTIs). This study explored lay peopleâs perceptions and experiences of using nasal sprays to prevent RTIs to identify barriers and facilitators to their adoption and continued use. DESIGN: Qualitative research. Study 1 thematically analysed online consumer reviews of an RTI prevention nasal spray. Study 2 interviewed patients about their reactions to and experiences of a digital intervention that promotes and supports nasal spray use for RTI prevention (reactively: at âfirst signsâ of infection and preventatively: following possible/probable exposure to infection). Interview transcripts were analysed using thematic analysis. SETTING: Primary care, UK. PARTICIPANTS: 407 online customer reviews. 13 purposively recruited primary care patients who had experienced recurrent infections and/or had risk factors for severe infections. RESULTS: Both studies identified various factors that might influence nasal spray use including: high motivation to avoid RTIs, particularly during the COVID-19 pandemic; fatalistic views about RTIs; beliefs about alternative prevention methods; the importance of personal recommendation; perceived complexity and familiarity of nasal sprays; personal experiences of spray success or failure; tolerable and off-putting side effects; concerns about medicines; and the nose as unpleasant and unhygienic. CONCLUSIONS: People who suffer disruptive, frequent or severe RTIs or who are vulnerable to RTIs are interested in using a nasal spray for prevention. They also have doubts and concerns and may encounter problems. Some of these may be reduced or eliminated by providing nasal spray users with information and advice that addresses these concerns or helps people overcome difficulties
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