458 research outputs found
The Worktown Photographs of Mass-Observation: from Anthropological Data to Digitalised Images
Mass-Observation was created in the 1930s; this was an era that began with an economic slump and concluded with a world war. The founders of Mass-Observation, the anthropologist Tom Harrisson, journalist and poet Charles Madge and documentary filmmaker Humphrey Jennings, aimed to record everyday life in Britain. This âanthropology of ourselvesâ culminated in the union of two disparate projects: Harrissonâs Worktown in the north of England and Madge and Jenningsâs National Panel based in London. Their methods of research were innovative and mostly relied on a system of observers. Harrissonâs anthropological research in Worktown included photography as a form of data collection. The principal photographer was the photojournalist Humphrey Spender who took around 900 photographs for Harrissonâs Worktown project. At the time of taking the photographs were largely ignored and remained in obscurity until the 1970s when Harrisson began exploiting the Mass-Observation archive.
Although the Worktown photographs are predominantly understood in a documentary context, little attention has been given to the photographs as anthropological data or their place in the development of visual research. Hence, this study is part of a small body of research into their use as a form of visual anthropology. The main emphasis is on the production and contemporary use of the Worktown photographs but extends to their afterlife up to their latest trajectory as digital images. It will be argued that the methodology in Worktown was flawed, undermining the photographs as anthropological data. Moreover, that the best explanation for the photographs not being published contemporaneously was fear of litigation. Furthermore, that even if published, the evidence suggests that Harrisson would have imposed his own meaning onto the photographs
How to use pen and paper tasks to aid tremor diagnosis in the clinic
When a patient presents with tremor, it can be useful to perform a few simple pen and paper tests. In this article, we explain how to maximise the value of handwriting and of drawing Archimedes spirals and straight lines as clinical assessments. These tasks take a matter of seconds to complete but provide a wealth of information that supplements the standard physical examination. They aid the diagnosis of a tremor disorder and can contribute to its longitudinal monitoring. Watching the patientâs upper limb while they write and draw may reveal abnormalities such as bradykinesia, dystonic posturing and distractibility. The finished script and drawings can then be evaluated for frequency, amplitude, direction and symmetry of oscillatory pen movements and for overall scale of penmanship. Essential, dystonic, functional and parkinsonian tremor each has a characteristic pattern of abnormality on these pen and paper tests
Effects of gamification on self efficacy and persistence in virtual world familiarization
Dissertation supervisor: Dr. Joi Moore.Includes vita.Students who are inexperienced with multi-user virtual environments (MUVEs) such as Second Life can experience significant difficulties when first entering the virtual classroom. The unfamiliar paradigm of moving an avatar around a simulated Euclidean space can lead to disorientation, confusion, frustration and ultimately, a defeatist affect that leads to abandonment of the format. Overcoming these barriers-to-entry necessitates a foundational training course in which students can become efficacious in the basic use of virtual worlds. However, researchers have not fully established evidence-based best practices for the design of these training courses. Gamification, the process in which non-game activities are endowed with the typical attributes of a game, is a technique that has been empirically shown to improve motivation and satisfaction in such fields as education and the workplace. This study experimentally tested the effects of gamifying a virtual world familiarization course on self-efficacy, persistence, task skill and satisfaction. The results inform a theoretical model and substantive recommendations for the design of familiarization courses for virtual world learning programs.Includes bibliographical references (pages 115-132)
The personal and workplace characteristics of uninsured expatriate males in Saudi Arabia.
Background
A major concern by the health decision makers in Gulf Cooperative Council (GCC) countries is the burden of financing healthcare. While other GCC countries have been examining different options, Saudi Arabia has endeavoured to reform its private healthcare system and control expatriate access to government resources through the provision of Compulsory Employment-Based Health Insurance (CEBHI). The objective of this research was to investigate, in a natural setting, the characteristics of uninsured expatriates based on their personal and workplace characteristics.
Methods
Using a cross-sectional survey, data were collected from a sample of 4,575 male expatriate employees using a multi-stage stratified cluster sampling technique. Descriptive statistics were used to summarize all variables, and the dependent variable was tabulated by access to health insurance and tested using Chi-square. Logistic analysis was performed, guided by the conceptual model.
Results
Of survey respondents, 30% were either uninsured or not yet enrolled in a health insurance scheme, 79.4% of these uninsured expatriates did not have valid reasons for being uninsured, with Iqama renewal accounting for 20.6% of the uninsured. The study found both personal and workplace characteristics were important factors influencing health insurance status. Compared with single expatriates, married expatriates (accompanied by their families) are 30% less likely to be uninsured. Moreover, workers occupying technical jobs requiring high school level of education or above were two-thirds more likely to be insured compared to unskilled workers. With regard to firm size, respondents employed in large companies (more than 50 employees) are more likely to be insured compared to those employed in small companies (less than ten employees). In relation to business type, the study found that compared to workers from the agricultural sector, industrial/manufacturing, construction and trading sectors, workers were, respectively, 76%, 85%, and 60% less likely to be uninsured.
Conclusion
Although the CEBHI is mandatory, this study found that the characteristics of uninsured expatriates, in respect of their personal and workplace characteristics have similarities with the uninsured from other private employment-sponsored health insurance schemes. Other factors influencing access to health insurance, besides employee and workplace characteristics, include the development and extent of the countryâs insurance industry
Cost-effectiveness of community-based strategies for blood pressure control in a low-income developing country: findings from a cluster-randomized, factorial-controlled trial.
BACKGROUND: Evidence on economically efficient strategies to lower blood pressure (BP) from low- and middle-income countries remains scarce. The Control of Blood Pressure and Risk Attenuation (COBRA) trial randomized 1341 hypertensive subjects in 12 randomly selected communities in Karachi, Pakistan, to 3 intervention programs: (1) combined home health education (HHE) plus trained general practitioner (GP); (2) HHE only; and (3) trained GP only. The comparator was no intervention (or usual care). The reduction in BP was most pronounced in the combined group. The present study examined the cost-effectiveness of these strategies. METHODS AND RESULTS: Total costs were assessed at baseline and 2 years to estimate incremental cost-effectiveness ratios based on (1) intervention cost; (2) cost of physician consultation, medications, diagnostics, changes in lifestyle, and productivity loss; and (3) change in systolic BP. Precision of the incremental cost-effectiveness ratio estimates was assessed by 1000 bootstrapping replications. Bayesian probabilistic sensitivity analysis was also performed. The annual costs per participant associated with the combined HHE plus trained GP, HHE alone, and trained GP alone were 3.34, and 23 (95 confidence interval, 6-99) per mm Hg reduction in systolic BP compared with usual care, and remained so in 97.7 of 1000 bootstrapped replications. CONCLUSIONS: The combined intervention of HHE plus trained GP is potentially affordable and more cost-effective for BP control than usual care or either strategy alone in some communities in Pakistan, and possibly other countries in Indochina with similar healthcare infrastructure
The decline of migratory salmonid stocks: a new threat to pearl mussels in Scotland
The general decline of the endangered freshwater pearl mussel Margaritifera margaritifera (L.) throughout its holarctic range is well documented. Scotland is considered to be a stronghold of margaritifera, containing approximately half of the world's known remaining viable populations. However, even here the majority of populations have declined and many have disappeared completely. This article provides an overview of the freshwater pearl mussel life-cycle and the life-cycle of salmonids which are the host fish during the freshwater mussels short parasitic larval phase. The authors highlight the potential implications of the decline of salmonids for freshwater populations in Scotland
High-speed single-molecule tracking of CXCL13 in the B-Follicle
Soluble factors are an essential means of communication between cells and their environment. However, many molecules readily interact with extracellular matrix components, giving rise to multiple modes of diffusion. The molecular quantification of diffusion in situ is thus a challenging imaging frontier, requiring very high spatial and temporal resolution. Overcoming this methodological barrier is key to understanding the precise spatial patterning of the extracellular factors that regulate immune function. To address this, we have developed a high-speed light microscopy system capable of millisecond sampling in ex vivo tissue samples and sub-millisecond sampling in controlled in vitro samples to characterize molecular diffusion in a range of complex microenvironments. We demonstrate that this method outperforms competing tools for determining molecular mobility of fluorescence correlation spectroscopy (FCS) and fluorescence recovery after photobleaching (FRAP) for evaluation of diffusion. We then apply this approach to study the chemokine CXCL13, a key determinant of lymphoid tissue architecture, and B-cell mediated immunity. Super-resolution single-molecule tracking of fluorescently labeled CCL19 and CXCL13 in collagen matrix was used to assess the heterogeneity of chemokine mobility behaviors, with results indicating an immobile fraction and a mobile fraction for both molecules, with distinct diffusion rates of 8.4 ± 0.2 ”m2s-1 and 6.2 ± 0.3 ”m2s-1 respectively. To better understand mobility behaviors in situ we analyzed CXCL13-AF647 diffusion in murine lymph node tissue sections and observed both an immobile fraction and a mobile fraction with a diffusion coefficient of 6.6 ± 0.4 ”m2s 1, suggesting that mobility within the follicle is also multimodal. In quantitatively studying mobility behaviors at the molecular level, we have obtained an increased understanding of CXCL13 bioavailability within the follicle. Our high-speed single-molecule tracking approach affords a novel perspective from which to understand the mobility of soluble factors relevant to the immune system
A multiâcomponent method to determine pesticides in surface water by liquidâchromatography tandem quadrupole mass spectrometry
Pesticide pollution of surface water is a major concern in many agricultural catchments The development of rapid and accurate methods for determining pesticide concentrations in water samples is, therefore, important. Here we describe a method for the simultaneous analysis of six pesticides (metaldehyde, quinmerac, carbetamide, metazachlor, propyzamide and pendimethalin) in natural waters by direct aqueous injection with liquid chromatography-tandem mass spectrometry. The method validation showed good linearity from 0.2 to 50.0 ”g/L with correlation coefficients between 0.995 and 0.999. Method accuracy ranged from 84 to 100% and precision Relative standard deviation (RSD) from 4 to 15%. The limits of detection for the targeted pesticides ranged from 0.03 to 0.36 ”g/L. No significant matrix effects on quantification were observed (t-test). The method was tested on water samples from a small arable catchment in eastern England. Peak concentrations for the determinands ranged from 1 to 10 ”g/L
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