1,720,952 research outputs found
Ground states and formal duality relations in the Gaussian core model
Full text linkWe study dimensional trends in ground states for soft-matter systems. Specifically, using a high-dimensional version of Parrinello-Rahman dynamics, we investigate the behavior of the Gaussian core model in up to eight dimensions. The results include unexpected geometric structures, with surprising anisotropy as well as formal duality relations. These duality relations suggest that the Gaussian core model possesses unexplored symmetries, and they have implications for a broad range of soft-core potentials.Institute of Applied MathematicsElectrical Engineering, Mathematics and Computer Scienc
The effects of an energy efficiency retrofit on indoor air quality
No full textabstract: To investigate the impacts of an energy efficiency retrofit, indoor air quality and resident health were evaluated at a low‐income senior housing apartment complex in Phoenix, Arizona, before and after a green energy building renovation. Indoor and outdoor air quality sampling was carried out simultaneously with a questionnaire to characterize personal habits and general health of residents. Measured indoor formaldehyde levels before the building retrofit routinely exceeded reference exposure limits, but in the long‐term follow‐up sampling, indoor formaldehyde decreased for the entire study population by a statistically significant margin. Indoor PM levels were dominated by fine particles and showed a statistically significant decrease in the long‐term follow‐up sampling within certain resident subpopulations (i.e. residents who report smoking and residents who had lived longer at the apartment complex).Corresponding Authors:
Hugo Destaillats
Lawrence Berkeley National Laboratory
[email protected]
Matthew Fraser
Arizona State University
[email protected]
Writing and the rights of reality: usurpation and potentiality in Derrida, Plato, Nietzsche, and Beckett
Full text linkThe thesis critically evaluates Jacques Derrida's conferral of the rights of reality on writing, focussing on his theory of an arche-text in light of the speculative nature of this theory. The theory is initially considered in the context of Derrida's elucidation of the usurpatory status of writing within the Platonic and Nietzschean texts. This consideration reveals an admission of writing's usurpatory status by both writers while at the same time demonstrating their awareness of the intrinsically speculative nature of this view, the significance of writing lying in its ability to exteriorise the radically indeterminate status of consciousness m relation to reality rather than its ability to displace consciousness or reality The analyses, therefore, not only bring the Derridean hypothesis of a repressive or phonocentric metaphysical episteme into question but also exhibit the historical and philosophical role of potentiality in relation to writing, writing's ultimate significance lying in its capacity to exteriorise our existence as a mode of potentiality. Accordingly, in the second half of the thesis the Derridean theory of writing is countered with a specifically Aristotelian theory of the text as it is exhibited in the prose of Samuel Beckett, an author whose significance lies in his close alignment with Derridean theory within contemporary criticism. It is demonstrated that this identification has obviated an awareness of the significance of potentiality within the Beckettian text, his work consequently being appraised in the previously neglected context of Aristotelian metaphysics
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Is exercise training safe and effective for ALL heart failure patients: A retrospective service evaluation of a hospital based cardiac rehabilitation programme
Full text linkThe main purpose of this study was to investigate whether exercise training is safe and effective for all classifications of heart failure, female and elderly (70 years and above) heart failure patients and also those heart failure patients with significant co-morbidity. Much of the research into exercise training and heart failure has been carried out on middle aged men in NYHA II-III classification of heart failure who have no other significant co-existing conditions. This is not reflective of the population of heart failure patients in general. The cardiac rehabilitation records (n=1000) of heart failure patients who had attended an exercise programme at a hospital based NHS service over a period of ten years were retrospectively evaluated to investigate the safety and efficacy of exercise training. Analysis of baseline statistics and repeated outcome measures were used to investigate the significance of the service and to ascertain where similarities and differences lay with the research. 74% were male, the age range was 17-90 years and 52% of patients had one or more significant co-morbidity. The acute event incidence was recorded at four per 1000 patients. NYHA I patients, female, elderly heart failure patients and those with significant co-morbidity showed significant improvements in functional capacity and quality of life measures with exercise training (p< 0.05). However no conclusion on the effectiveness of exercise could be drawn for NYHA IV heart failure patients due to insufficient recorded data and reduced adherence to exercise sessions for this group. A hospital based exercise programme, therefore may not be the most appropriate setting for the NYHA IV patient. This study supports previous research of the benefit of exercise training in heart failure but broadens it further to show that exercise is safe for all heart failure patients and is also effective for all heart failure patients with the exception of NYHA IV patients where further investigation is needed
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