897 research outputs found

    Determining a Relationship between Foreign News Media Reports covering U.S. Military Events and Network Incidents against DOD Networks

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    This thesis explores the nature of the relationship between foreign news media and network incidents against DoD networks. A rank correlation was performed between the number of network incidents against DoD networks and foreign news media reports covering U.S. Military events. Further analysis was conducted to determine the key terms used in the contents of foreign news media reports for the months the reports were significantly correlated with network incidents. Several significant correlations were found between various combinations of regions and categories of network incidents. However, the correlations were only moderate and the key terms only led to a slightly better understanding of such relationships

    Diagnostic accuracy of organ electrodermal diagnostics

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    Objective. To estimate the diagnostic accuracy as well as the scope of utilisation of a new bio-electronic method of organ diagnostics.Design. Double-blind comparative study of the diagnostic results obtained by means of organ electrodermal diagnostics (OED) and clinical diagnoses, as a criterion standard.Setting. Department of Surgery, Helen Joseph Hospital, Johannesburg.Patients. 70 pre-selected inpatients of mean age 36 (SD =7) years with suspected pathology of one (or more) of the following organs: oesophagus, stomach, duodenum, biliary tract, pancreas, colon, kidneys and urinary tract. In total, 276 of the above mentioned internal organs were selected for statistical consideration. Main outcome measures. The difference between the so-called basic electrical impedance of the skin and the impedance value established for a particular organ projection area (the skin zone corresponding to a particular internal organ).Results. In total 250 true OED results were obtained from the 276 subjects considered: detection rate 90.6% (95% Cl 87.1 - 94.1 %). Established OED sensitivity was 91.8% (95% Cl 88.6 - 95.0%) and OED specificity equalled 89.9% (95% Cl 86.4 - 93.4%). The predictive value for positive OED results was 83.3% (95% Cl 78.9 - 87.7%) and for negative OED results 95.2% (95% Cl 92.0 - 98.4%). The OED results were affected neither by the type nor the aetiology of disease, i.e. OED estimates the actual extent of the pathological process within particular organs but does not explain the cause of pathology directly. No sideeffects of the OED examinations were observed.Conclusions. So-called organ projection areas do exist on the skin surface. The electrical impedance of the projection areas corresponding to diseased organs is increased, relative to that of healthy organ-related skin zones. The difference in impedance is proportional to the intensity of the pathological process. OED, which utilises these electrical phenomena of the skin, may detect diseased organs and estimate the extent of pathological process activity within these organs

    Weighted decomposition in high-performance lattice-Boltzmann simulations: Are some lattice sites more equal than others?

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    Obtaining a good load balance is a significant challenge in scaling up lattice-Boltzmann simulations of realistic sparse problems to the exascale. Here we analyze the effect of weighted decomposition on the performance of the HemeLB lattice-Boltzmann simulation environment, when applied to sparse domains. Prior to domain decomposition, we assign wall and in/outlet sites with increased weights which reflect their increased computational cost. We combine our weighted decomposition with a second optimization, which is to sort the lattice sites according to a space filling curve. We tested these strategies on a sparse bifurcation and very sparse aneurysm geometry, and find that using weights reduces calculation load imbalance by up to 85 %, although the overall communication overhead is higher than some of our runs.This work has received funding from the CRESTA and MAPPER projects within the EC-FP7 (ICT-2011.9.13) under Grant Agreements nos. 287703 and 261507, and from EPSRC Grants EP/I017909/1 (www.2020science.net) and EP/I034602/1

    Lighten UP! A community-based group intervention to promote psychological well-being in older adults

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    Objectives: Aging is often characterized by declines in physical and mental health and increased risk for depression and social isolation. A protective factor that has been found to effectively moderate these phenomena is psychological well-being. The aim of his study was to pilot test a novel group intervention (Lighten UP! program) for the promotion of psychological well-being in older adults living in the community. Methods: Lighten UP! is an eight-week program consisting of 90-minute group session designed to teach participants to identify and savor positive experiences across multiple domains of eudaimonic well-being. It was delivered to a sample of 103 men and women aged 60 or over, that were assessed pre- and post-intervention with Ryff's Psychological Well-being Scale (PWB), Life Satisfaction scale, Geriatric Depression Scale, Symptom Questionnaire, and items measuring sleep complaints and social well-being. Results: At the end of the eight weeks, participants reported significantly increased PWB, life satisfaction, and social well-being along with lower levels of depression and fewer physical symptoms and sleep complaints. These gains were particularly robust for individuals with lower pre-program levels of PWB. Conclusions: This pilot investigation suggests the feasibility of a short group program for enhancing well-being in older adults. Future controlled investigations with long-term follow-up assessment are needed to confirm the effectiveness and sustained benefits of the Lighten UP! program. © 2015 Taylor & Franci

    Enhanced suppresion of localization in a continuous Random-Dimer Model

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    We consider a one-dimensional continuous (Kronig-Penney) extension of the (tight-binding) Random Dimer model of Dunlap et al. [Phys. Rev. Lett. 65, 88 (1990)]. We predict that the continuous model has infinitely many resonances (zeroes of the reflection coefficient) giving rise to extended states instead of the one resonance arising in the discrete version. We present exact, transfer-matrix numerical calculations supporting, both realizationwise and on the average, the conclusion that the model has a very large number of extended states.Comment: 10 pages, 3 Figures available on request, REVTeX 3.0, MA/UC3M/1/9

    The New ‘Hidden Abode’: Reflections on Value and Labour in the New Economy

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    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 ‘hidden abode of production’: 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 ‘hidden abode’ outside employment, for example in the ‘production of organization’ and in consumption. Although they can open up this new ‘hidden abode’, without LPT's fine-grained analysis of control/resistance, indeterminacy and structured antagonism, these theorists risk succumbing to empirically naive claims about the ‘new economy’. Through developing an expanded conception of a ‘new hidden abode’ 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
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