Activity and advanced cancer:A grounded theory

Background: Cancer-related fatigue and loss of physical functioning are distressing symptoms which negatively impact the quality of life of people with advanced cancer. Physical activity has been shown to have positive effects on these symptoms in early-stage cancer, but previous research demonstrated an incongruence between people with advanced cancer’s expressed interest and actual participation in a physical activity intervention. Aim: To gain an in-depth understanding of the experience of activity and quality of life in people with advanced cancer, using a classic grounded theory approach. Design: Through the post-positivist lens of subtle realism, and informed by classic grounded theory methods, a two-phase, cross-sectional, qualitative study was conducted. For 7 days duration, participants wore an activPAL™ activity monitor and completed a daily record sheet, which were then used as qualitative probes for face-to-face, semi-structured interviews. Setting/participants: A total of 15 people with advanced cancer, aged 18 years or older, and with a median survival of 100 days from time of study consent, were recruited from an outpatient department of a tertiary cancer centre in Alberta, Canada. Findings: Maintaining their responsibilities, no matter how small, was the prime motive for participants’ behaviour. For people with advanced cancer, the minimum level of responsibility was dynamic and unique. It was achieved through a multifaceted interaction between the perceived benefits, prevailing conditions and mechanisms. Conclusion: This grounded theory enables understanding of activity as a mechanism through which responsibility is managed and may inform future behavioural interventions in people with advanced cancer

A study of productivity in optometric practice: Its relation to manpower and planning

A survey of all optometrists in HEW Region X was implemented to assess a number of practice characteristics . Relationships between practice characteristics and productivity were demonstrated and changing trends in these characteristics were determined. Age, years in practice, utilization of supplementary personnel, and practice mode were found to bear a direct relationship to productivity. It was shown that manpower projections must take current trends in these characteristics into account in order to be valid

A grounded theory approach to physical activity and advanced cancer:a qualitative study protocol

Background: Physical activity has demonstrated benefits in cancer-related fatigue and physical functioning in early-stage cancer patients; however, the role of physical activity at the end stage of cancer has not been established. To challenge positivist–empiricist assumptions, I am seeking to develop a new theoretical framework that is grounded in the advanced cancer patient’s experience of activity. Aim: To gain an in-depth understanding of the experience of activity and quality of life in advanced cancer patients. Objectives: (1) To explore the meaning of activity for advanced cancer patients in the context of their day-to-day life, (2) to elicit advanced cancer patients’ perceptions of activity with respect to their quality of life, and (3) to elicit advanced cancer patients’ views of barriers and facilitators to activity in the context of their day-to-day life. Study Design: A two-phase, crosssectional, qualitative study will be conducted through the postpositivist lens of subtle realism and informed by the principles of grounded theory methods. Study Methods: Advanced cancer patients will be recruited through the outpatient department of a tertiary cancer center. For Phase 1, participants will wear an activPAL™ activity monitor and fill out a daily record sheet for 7-day duration. For Phase 2, the activity monitor output and daily record sheets will be used as qualitative probes for face-to-face, semistructured interviews. Concurrent coding, constant comparative analysis, and theoretical sampling will continue with the aim of achieving as close as possible to theoretical saturation. Ethics and Discussion: Ethical and scientific approval will be obtained by all local institutional review boards prior to study commencement. The findings will generate new mid-level theory about the experience of activity and quality of life in advanced cancer patients and aid in the development of a new theoretical framework for designing interventions for this population

The Australian Corneal Graft Registry 2007 Report

The Australian Corneal Graft Registry opened in May 1985 and thus has now been in operation for over 22 years. The census date for this report was 01/09/2006. Over the years, we have collected data on more than 18,500 corneal grafts. The majority of corneal grafts registered have been penetrating, but increasing numbers of lamellar and limbal grafts have also been registered over recent years, as patterns of surgical practice change. At registration, we seek information on the recipient, the donor, the eye bank practices and the operative procedure. Follow-up then occurs at approximately yearly intervals for an indefinite period, and ceases upon loss of the graft, or the death or loss-to-follow-up of the patient. At each round of follow-up, we request information on the graft and visual outcome, and upon relevant post-operative events and treatments. The data are entered into an Access database and checked for consistency. Descriptive, univariate and multivariate analyses are subsequently performed using SPSS and Stata software, and the report is eventually collated.This report was published with assistance from The Commonwealth Department of Health and Ageing

Real time x‐ray studies of rapidly annealed epitaxial layers

Time‐resolved x‐ray scattering studies of epitaxial overlayers are presented. The results illustrate the usefulness of high‐brightness synchrotron probes for studying the cooperative kinetics of interfaces during rapid thermal processing.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70481/2/RSINAK-63-1-704-1.pd

Synchrotron radiation applications of charge coupled device detectors (invited)

Scientific charge coupled devices (CCDs) offer many opportunities for high brightness synchrotron radiation applications where good spatial resolution and fast data acquisition are important. We describe the use of virtual‐phase CCD pixel arrays as two‐dimensional area detectors illustrating the techniques with results from recent x‐ray scattering, imaging, and absorption spectroscopy studies at NSLS, CHESS, SRC, and LURE DCI. The virtual phase architecture allows direct frontside illumination of the CCD detector chips giving advantages in the speed and sensitivity of the detector. Combining developments in x‐ray optics (dispersive geometry), position sensitive area detectors (CCDs), and fast data acquisition, we have been able to perform time‐resolved measurements at the microsecond level. Current developments include faster data transfer rates so that the single bunch timing structure of third generation synchrotron sources can be exploited.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70562/2/RSINAK-63-1-784-1.pd

Improved age estimates for key Late Quaternary European tephra horizons in the RESET lattice

The research project 'Response of Humans to Abrupt Environmental Transitions' (RESET) used tephra layers to tie together and synchronise the chronologies of stratigraphic records at archaeological and environmental sites. With the increasing importance of tephra as chronological markers in sedimentary sequences, both in this project and more generally, comes a requirement to have good estimates for the absolute age of these volcanic horizons. This paper summarises the chronology of the key tephra in the RESET tephra lattice in the time range 10-60 ka BP, from the existing literature, from papers produced as part of the RESET project, and reanalysis conducted for this paper. The paper outlines the chronological ap- proach taken to the dating of tephra within the RESET project, and the basis for further work, as part of the INTIMATE (INTegrating Ice core MArine and TEr- restrial records) initiative. For each of the tephra layers in the lattice, the existing literature is discussed and, where relevant date estimates updated using the latest radiocarbon calibration curves (IntCal13 and Marine13) and methods. Maps show the approximate extent of tephra finds, giving a visual indication of the coverage of the lattice in different time-periods.</p

Hyperglycemia and Adverse Pregnancy Outcome (HAPO) study: common genetic variants in GCK and TCF7L2 are associated with fasting and postchallenge glucose levels in pregnancy and with the new consensus definition of gestational diabetes mellitus from the International Association of Diabetes and Pregnancy Study Groups.

OBJECTIVE: Common genetic variants in GCK and TCF7L2 are associated with higher fasting glucose and type 2 diabetes in nonpregnant populations. However, their associations with glucose levels from oral glucose tolerance tests (OGTTs) in pregnancy have not been assessed in a large sample. We hypothesized that these variants are associated with quantitative measures of glycemia in pregnancy. RESEARCH DESIGN AND METHODS: We analyzed the associations between variants rs1799884 (GCK) and rs7903146 (TCF7L2) and OGTT outcomes at 24-32 weeks' gestation in 3,811 mothers of European (U.K. and Australia) and 1,706 mothers of Asian (Thailand) ancestry from the HAPO cohort. We also tested associations with offspring birth anthropometrics. RESULTS: The maternal GCK variant was associated with higher fasting glucose in Europeans (P = 0.001) and Thais (P 0.05). In both populations, both variants were associated with higher odds of gestational diabetes mellitus according to the new International Association of Diabetes and Pregnancy Study Groups recommendations (P = 0.001-0.08). CONCLUSIONS: Maternal GCK and TCF7L2 variants are associated with glucose levels known to carry an increased risk of adverse pregnancy outcome in women without overt diabetes. Further studies will be important to determine the variance in maternal glucose explained by all known genetic variants

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