445 research outputs found
Documenting Wonderland: Conducting a Collection Survey to Inform Collecting Policies
Collection surveys and collecting policies have become standard for effective archival collection management. But in recent years, surveys have most often been used to establish processing and preservation priorities and collecting policies are often considered static documents that, once established, change little as the collections grow. The Yellowstone National Park Archives, with a mandate to update its collecting policy and limited space and resources, developed a project to survey its collections in order to inform an updated policy. With a more granular focus on analyzing collections than previous surveys have undertaken, this case study focused on defining success and fulfillment of some collecting areas, while also identifying areas in need of more attention. The successfully completed project has provided critical data to inform Yellowstone\u27s collecting considerations and offers a model for other repositories in examining their collections and policies in light of a more resource-limited future
The application of high altitude photography for vegetation resource inventories in southeastern Arizona Final report
Application of Apollo space photography and sequential high altitude NASA aircraft photography for evaluating natural and cultural resources in southeastern Arizona - ma
Clinical validity assessment of a breast cancer risk model combining genetic and clinical information
_Background:_ The extent to which common genetic variation can assist in breast cancer (BCa) risk assessment is unclear. We assessed the addition of risk information from a panel of BCa-associated single nucleotide polymorphisms (SNPs) on risk stratification offered by the Gail Model.

_Methods:_ We selected 7 validated SNPs from the literature and genotyped them among white women in a nested case-control study within the Women’s Health Initiative Clinical Trial. To model SNP risk, previously published odds ratios were combined multiplicatively. To produce a combined clinical/genetic risk, Gail Model risk estimates were multiplied by combined SNP odds ratios. We assessed classification performance using reclassification tables and receiver operating characteristic (ROC) curves. 

_Results:_ The SNP risk score was well calibrated and nearly independent of Gail risk, and the combined predictor was more predictive than either Gail risk or SNP risk alone. In ROC curve analysis, the combined score had an area under the curve (AUC) of 0.594 compared to 0.557 for Gail risk alone. For reclassification with 5-year risk thresholds at 1.5% and 2%, the net reclassification index (NRI) was 0.085 (Z = 4.3, P = 1.0×10^-5^). Focusing on women with Gail 5-year risk of 1.5-2% results in an NRI of 0.195 (Z = 3.8, P = 8.6×10^−5^).

_Conclusions:_ Combining clinical risk factors and validated common genetic risk factors results in improvement in classification of BCa risks in white, postmenopausal women. This may have implications for informing primary prevention and/or screening strategies. Future research should assess the clinical utility of such strategies.

The New âHidden Abodeâ: Reflections on Value and Labour in the New Economy
In a pivotal section of Capital, volume 1, Marx (1976: 279) notes that, in order to understand the capitalist production of value, we must descend into the âhidden abode of productionâ: the site of the labour process conducted within an employment relationship. In this paper we argue that by remaining wedded to an analysis of labour that is confined to the employment relationship, Labour Process Theory (LPT) has missed a fundamental shift in the location of value production in contemporary capitalism. We examine this shift through the work of Autonomist Marxists like Hardt and Negri, Lazaratto and Arvidsson, who offer theoretical leverage to prize open a new âhidden abodeâ outside employment, for example in the âproduction of organizationâ and in consumption. Although they can open up this new âhidden abodeâ, without LPT's fine-grained analysis of control/resistance, indeterminacy and structured antagonism, these theorists risk succumbing to empirically naive claims about the ânew economyâ. Through developing an expanded conception of a ânew hidden abodeâ of production, the paper demarcates an analytical space in which both LPT and Autonomist Marxism can expand and develop their understanding of labour and value production in today's economy. </jats:p
Labour supply and skills demands in fashion retailing
If, as Adam Smith once famously suggested, Britain was a nation of shopkeepers then it is now a nation of shopworkers. Retail is now a significant part of the UK economy, accounting for ÂŁ256 billion in sales and one-third of all consumer spending (Skillsmart, 2007). It is the largest private sector employer in the UK, employing 3m workers, or 1 in 10 of the working population. For future job creation in the UK economy retail is also similarly prominent and the sector is expected to create a further 250,000 jobs to 2014 (Skillsmart, 2007). The centrality of retail to economic success and job creation is apparent in other advanced economies. For example, within the US, retail sales is the occupation with the largest projected job growth in the period 2004-2014 (Gatta et al., 2009) and in Australia retail accounts for 1 in 6 workers (Buchanan et al., 2003). Within the UK these workers are employed in approximately 290,000 businesses, encompassing large and small organizations and also a number of sub-sectors. This variance suggests that retail should not be regarded as homogenous in its labour demands. Hart et al. (2007) note how skill requirements and the types of workers employed may differ across the sector. This chapter further opens up this point, providing an analysis of the labour supply and skills demands for the sub-sectors of clothing, footwear and leather goods, which are described by Skillsmart (2007: 48) as being 'significant categories in UK retailing'
Colorectal cancer in relation to postmenopausal estrogen and estrogen plus progestin in the Womenâs Health Initiative clinical trial and observational study
Background: Colorectal cancer incidence was reduced among women assigned to active treatment in the Womenâs Health Initiative (WHI) estrogen plus progestin randomized trial, but the interpretation was obscured by an associated later stage of diagnosis. In contrast the estrogen-alone trial showed no incidence reduction or differential stage at diagnosis. Here, data from the WHI observational study are considered, in conjunction with colorectal cancer mortality data from the hormone therapy trials, in an attempt to clarify postmenopausal hormone therapy effects.
Participants and Methods: Postmenopausal women aged 50-79 at WHI enrollment. Estrogen-alone analyses include 21,552 and 10,739 women who were post-hysterectomy from the observational study and clinical trial respectively. Estrogen plus progestin analyses include 32,084 and 16,608 observational study and clinical trial women with uterus. Colorectal cancers were verified by central medical and pathology report review.
Results: Hazard ratios (95% confidence intervals) from the WHI observational study were 0.80 (0.53 to 1.20) for estrogen and 1.15 (0.74 to 1.79) for estrogen plus progestin, with respectively 168 and 175 women diagnosed with colorectal cancer. Delayed diagnosis with estrogen plus progestin is not evident in the observational study. No protective effect on colorectal cancer mortality in the estrogen plus progestin trial is seen over an 8-year intervention and follow-up period.
Conclusion: Hazard ratio patterns in the WHI clinical trial and observational study do not provide strong evidence of a clinically important colorectal cancer benefit with either estrogen-alone or estrogen plus progestin over 7-8 years of treatment and follow-up
Role of osmolality in blood pressure stability after dialysis and ultrafiltration
Role of osmolality in blood pressure stability after dialysis and ultrafiltration. To clarify the mechanisms involved in the stability of blood pressure during ultrafiltration (UF) alone versus regular dialysis, this study systematically examined the importance of changes in serum potassium, osmolality, and plasma norepinephrine during several dialysis maneuvers. Six stable, normotensive chronic dialysis patients were subjected to a uniform 2 to 3% decrease in body weight during the 2 hours of each dialysis maneuver. Supine to upright mean blood pressure (MBP) decreased (90 to 75 mm Hg, P < 0.05), and three patients became symptomatic after weight loss during regular dialysis, but orthostatic blood pressure was stable (89 to 86 mm Hg, NS) and the patients were asymptomatic after UF and weight loss. Isokalemic regular dialysis did not afford hemodynamic stability, as orthostatic MBP declined (85 to 56 mm Hg, P < 0.02), and four of the patients again were symptomatic after standing. A continuous hypertonic mannitol (25%) infusion during the 2-hour dialysis, however, kept osmolality from decreasing and was associated with a stable orthostatic MBP (89 to 83 mm Hg, NS). A continuous infusion of isotonic mannitol (5%) given in a volume five times that of the hypertonic mannitol failed to prevent orthostatic hypotension (89 to 60 mm Hg, P < 0.005). Plasma norepinephrine concentrations were high in these patients and increased only modestly after weight loss. These results implicate constant plasma osmolality as a critical protective factor of blood pressure during UF and further demonstrate that changes in blood pressure may be dissociated from changes in both serum potassium and plasma norepinephrine concentration.RĂŽle de l'osmolalitĂ© dans la stabilitĂ© de la pression artĂ©rielle aprĂšs dialyse et ultrafiltration. Afin de clarifier les mĂ©canismes impliquĂ©s dans la stabilitĂ© de la pression artĂ©rielle au cours de l'ultrafiltration (UF) seule par comparaison avec la dialyse habituelle ce travail Ă©value systĂ©matiquement l'importance des modifications de la kaliĂ©mie, de l'osmolalitĂ© et de la norĂ©pinĂ©phrine plasmatique au cours de plusieurs tactiques de dialyse. Six sujets stables, normotendus, en hĂ©modialyse chronique ont subi une diminution de poids corporel de 2 Ă 3% au cours des 2 heures de chaque tactique de dialyse. La pression artĂ©rielle moyenne a diminuĂ© de la position couchĂ©e Ă la position debout (de 90 Ă 75 mm Hg, P < 0,05) et trois patients sont devenus symptomatiques aprĂšs la perte de poids au cours de la dialyse habituelle. Par contre la pression artĂ©rielle orthostatique a Ă©tĂ© stable (89 Ă 86 mm Hg, NS) et les malades ont Ă©tĂ© asymptomatiques aprĂšs UF. La dialyse habituelle isokaliĂ©mique n'a pas dĂ©terminĂ© de stabilitĂ© hĂ©modynamique, la pression artĂ©rielle moyenne orthostatique a diminuĂ© (85 Ă 56 mm Hg, P < 0,02) et quatre malades ont Ă©tĂ© Ă nouveau symptomatiques quand ils se sont levĂ©s. Cependant quand une perfusion continue de mannitol hypertonique (25%) pendant les deux heures de la dialyse a empĂȘchĂ© la baisse de l'osmolalitĂ© la pression artĂ©rielle moyenne orthostatique a Ă©tĂ© stable (89 Ă 83 mm Hg, NS). Une perfusion continue de mannitol isotonique (5%) apportant un volume cinq fois celui du mannitol hypertonique n'a pas empĂȘchĂ© l'hypotention orthostatique (89 Ă 60 mm Hg, P < 0,005). Les concentrations plasmatiques de norĂ©pinĂ©phrine Ă©taient Ă©levĂ©es chez ces malades et n'ont que peu augmentĂ© aprĂšs la perte de poids. Ces rĂ©sultats impliquent qu'une osmolalitĂ© plasmatique constante est un facteur protecteur critique pour la pression artĂ©rielle au cours de UF et ils dĂ©montrent, de plus, que les modifications de la pression artĂ©rielle peuvent ĂȘtre dissociĂ©es des modifications du potassium plasmatique et de la concentration de norĂ©pinĂ©phrine
Scoping Potential Routes to UK Civil Unrest via the Food System: Results of a Structured Expert Elicitation
We report the results of a structured expert elicitation to identify the most likely types of potential food system disruption scenarios for the UK, focusing on routes to civil unrest. We take a backcasting approach by defining as an end-point a societal event in which 1 in 2000 people have been injured in the UK, which 40% of experts rated as âPossible (20â50%)â, âMore likely than not (50â80%)â or âVery likely (>80%)â over the coming decade. Over a timeframe of 50 years, this increased to 80% of experts. The experts considered two food system scenarios and ranked their plausibility of contributing to the given societal scenario. For a timescale of 10 years, the majority identified a food distribution problem as the most likely. Over a timescale of 50 years, the experts were more evenly split between the two scenarios, but over half thought the most likely route to civil unrest would be a lack of total food in the UK. However, the experts stressed that the various causes of food system disruption are interconnected and can create cascading risks, highlighting the importance of a systems approach. We encourage food system stakeholders to use these results in their risk planning and recommend future work to support prevention, preparedness, response and recovery planning
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