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Search Results: 1 - 10 of 19641 matches for " Ben Smith "
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A Systematic Review of the Effect of Expectancy on Treatment Responses to Acupuncture
Ben Colagiuri,Caroline A. Smith
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/857804
Abstract: Randomised controlled trials (RCTs) of acupuncture often find equivalent responses to real and placebo acupuncture despite both appearing superior to no treatment. This raises questions regarding the mechanisms of acupuncture, especially the contribution of patient expectancies. We systematically reviewed previous research assessing the relationship between expectancy and treatment responses following acupuncture, whether real or placebo. To be included, studies needed to assess and/or manipulate expectancies about acupuncture and relate these to at least one health-relevant outcome. Nine such independent studies were identified through systematic searches of Medline, PsycInfo, PubMed, and Cochrane Clinical Trials Register. The methodology and reporting of these studies were quite heterogeneous, meaning that meta-analysis was not possible. A descriptive review revealed that five studies found statistically significant effects of expectancy on a least one outcome, with three also finding evidence suggestive of an interaction between expectancy and type of acupuncture (real or placebo). While there were some trends in significant effects in terms of study characteristics, their generality is limited by the heterogeneity of study designs. The differences in design across studies highlight some important methodological considerations for future research in this area, particularly regarding whether to assess or manipulate expectancies and how best to assess expectancies.
A Multi-Stage CUDA Kernel for Floyd-Warshall
Ben Lund,Justin W Smith
Computer Science , 2010,
Abstract: We present a new implementation of the Floyd-Warshall All-Pairs Shortest Paths algorithm on CUDA. Our algorithm runs approximately 5 times faster than the previously best reported algorithm. In order to achieve this speedup, we applied a new technique to reduce usage of on-chip shared memory and allow the CUDA scheduler to more effectively hide instruction latency.
The Fundamental Theorem on Symmetric Polynomials: History's First Whiff of Galois Theory
Ben Blum-Smith,Samuel Coskey
Mathematics , 2013,
Abstract: We describe the Fundamental Theorem on Symmetric Polynomials (FTSP), exposit a classical proof, and offer a novel proof that arose out of an informal course on group theory. The paper develops this proof in tandem with the pedagogical context that led to it. We also discuss the role of the FTSP both as a lemma in the original historical development of Galois theory and as an early example of the connection between symmetry and expressibility that is described by the theory.
A Model-Based Analysis of Chemical and Temporal Patterns of Cuticular Hydrocarbons in Male Drosophila melanogaster
Clement Kent, Reza Azanchi, Ben Smith, Adrienne Chu, Joel Levine
PLOS ONE , 2007, DOI: 10.1371/journal.pone.0000962
Abstract: Drosophila Cuticular Hydrocarbons (CH) influence courtship behaviour, mating, aggregation, oviposition, and resistance to desiccation. We measured levels of 24 different CH compounds of individual male D. melanogaster hourly under a variety of environmental (LD/DD) conditions. Using a model-based analysis of CH variation, we developed an improved normalization method for CH data, and show that CH compounds have reproducible cyclic within-day temporal patterns of expression which differ between LD and DD conditions. Multivariate clustering of expression patterns identified 5 clusters of co-expressed compounds with common chemical characteristics. Turnover rate estimates suggest CH production may be a significant metabolic cost. Male cuticular hydrocarbon expression is a dynamic trait influenced by light and time of day; since abundant hydrocarbons affect male sexual behavior, males may present different pheromonal profiles at different times and under different conditions.
Dynamic Expression of the Translational Machinery during Bacillus subtilis Life Cycle at a Single Cell Level
Alex Rosenberg, Lior Sinai, Yoav Smith, Sigal Ben-Yehuda
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0041921
Abstract: The ability of bacteria to responsively regulate the expression of translation components is crucial for rapid adaptation to fluctuating environments. Utilizing Bacillus subtilis (B. subtilis) as a model organism, we followed the dynamics of the translational machinery at a single cell resolution during growth and differentiation. By comprehensive monitoring the activity of the major rrn promoters and ribosomal protein production, we revealed diverse dynamics between cells grown in rich and poor medium, with the most prominent dissimilarities exhibited during deep stationary phase. Further, the variability pattern of translational activity varied among the cells, being affected by nutrient availability. We have monitored for the first time translational dynamics during the developmental process of sporulation within the two distinct cellular compartments of forespore and mother-cell. Our study uncovers a transient forespore specific increase in expression of translational components. Finally, the contribution of each rrn promoter throughout the bacterium life cycle was found to be relatively constant, implying that differential expression is not the main purpose for the existence of multiple rrn genes. Instead, we propose that coordination of the rrn operons serves as a strategy to rapidly fine tune translational activities in a synchronized fashion to achieve an optimal translation level for a given condition.
Representations of cycling in metropolitan newspapers - changes over time and differences between Sydney and Melbourne, Australia
Chris Rissel, Catriona Bonfiglioli, Adrian Emilsen, Ben J Smith
BMC Public Health , 2010, DOI: 10.1186/1471-2458-10-371
Abstract: The Factiva electronic news archive was searched for articles referring to cycling published in four major metropolitan newspapers - two in Sydney and two in Melbourne, Australia, in the years from 1998 until 2008. After excluding articles not about cycling, there were 61 articles published in 1998, 45 in 1999, 51 in 2003, 82 in 2007 and 87 in 2008. Each article was coded for positive or negative orientation, and for framing of cyclists and cycling. Inter-rater reliability was calculated on a sample of 30 articles.Over the past decade there has been an increase in the reporting of cycling in the major newspapers in Sydney and Melbourne (from 106 in 1998/99 to 169 stories in 2007/08), with a significant increase in reporting of cycling in Melbourne, from 49 to 103 stories (p = 0.04). Recent reporting of cycling was generally positive (47% of articles, compared with 30% of articles which were negative) and focused on benefits such as health and the environment. Three quarters of negative stories involved injury or death of a cyclist. The Sydney based The Daily Telegraph reported the most negative stories (n = 60). We found positive framing of 'cycling' was more widespread than negative, whereas framing of 'cyclists' was more negative than positive.Quantity of reporting of cycling varies over time and by newspaper, and even between newspapers in different cities owned by the same media company. News coverage appears to reflect developments in the different cities, with increases in positive reporting of cycling in Melbourne following increases in cycling in that city. Negative cycling newspaper stories may deter people from considering cycling as a transport option, but real physical or political improvements to the cycling environment may be necessary before coverage becomes more positive.Cycling is the fourth most popular recreation in Australia, with bicycles increasingly used as transport across the country [1]. About a million new bicycles are sold in Australia ea
Managing heterogeneity in the study of neural oscillator dynamics
Carlo R Laing, Yu Zou, Ben Smith, Ioannis G Kevrekidis
The Journal of Mathematical Neuroscience , 2012, DOI: 10.1186/2190-8567-2-5
Intranasal ciclesonide for allergic rhinitis
Ben Williams, William B Smith, Frank E Kette
Journal of Asthma and Allergy , 2008, DOI: http://dx.doi.org/10.2147/JAA.S3082
Abstract: tranasal ciclesonide for allergic rhinitis Review (6104) Total Article Views Authors: Ben Williams, William B Smith, Frank E Kette Published Date November 2008 Volume 2008:1 Pages 49 - 54 DOI: http://dx.doi.org/10.2147/JAA.S3082 Ben Williams, William B Smith, Frank E Kette Department of Clinical Immunology and Allergy, Royal Adelaide Hospital, Adelaide, South Australia Abstract: Ciclesonide is a novel corticosteroid which is optimized for topical use. It is a pro-drug which is activated locally in the airway mucosa, lipid-conjugated for local retention, and has very high protein binding in circulation leading to low systemic bioavailability. These characteristics should lead to highly selective activity with reduced local and systemic side effects. It has been established as an inhaled medication for asthma and has also been shown in double-blind trials to be efficacious for the treatment of seasonal and perennial allergic rhinitis. However no data have yet demonstrated superiority over existing nasal topical corticosteroids, either in terms of efficacy or adverse effects, and trials have not yet clearly shown efficacy in rhinitis in children. Therefore the place of ciclesonide in the treatment of allergic rhinitis relative to other existing products remains unclear.
American cities, global networks: mapping the multiplegeographies of globalization in the Americas Cidades americanas, redes globais: mapeando as múltiplas geografias da globaliza o nas Américas
Noah Toly,Sofie Bouteligier,Graham Smith,Ben Gibson
Urbe : Revista Brasileira de Gest?o Urbana , 2012, DOI: 10.7213/urbe.6031
Abstract: The mapping of advanced producer and financial service firms across global cities began to increase understandingof the role of cities in global governance, the presence and influence of cities in the shifting architectureof global political economy, and the role of globalization in shaping the landscape of local and regionalgovernance. The literature that emerged from such studies has also emphasized 1) increasing levelsof inequality in global cities and 2) attendant contests over local outcomes of globalization while seekingother ways of measuring and articulating the emergence of globalizing cities. Analyzing location strategiesin other sectors can speak to these issues. This paper extends methodology common to the global citiesliterature to map non-governmental organization (NGO) and energy corporation offices in the Americas, focusingon the convergence and divergence of these networks with those of advanced producer and financialservices firms. Mapping all three sectors might reveal multiple geographies of globalization in the Americas.Because globalizing cities have become the centers of integrated world capital, radical poverty, and environmentalinjustice, studies of poverty in the Americas must take seriously the urban centers that increasinglyhave become the hub of economic and ideological flows. The urban location strategies of advanced producerand financial services, global NGOs, and global energy corporations must be understood in order to grapplemore fully with issues of inequality in American cities.
Scratchpads 2.0: a Virtual Research Environment supporting scholarly collaboration, communication and data publication in biodiversity science
Vincent Smith,Simon Rycroft,Irina Brake,Ben Scott
ZooKeys , 2011, DOI: 10.3897/zookeys.150.2193
Abstract: The Scratchpad Virtual Research Environment (http://scratchpads.eu/) is a flexible system for people to create their own research networks supporting natural history science. Here we describe Version 2 of the system characterised by the move to Drupal 7 as the Scratchpad core development framework and timed to coincide with the fifth year of the project’s operation in late January 2012. The development of Scratchpad 2 reflects a combination of technical enhancements that make the project more sustainable, combined with new features intended to make the system more functional and easier to use. A roadmap outlining strategic plans for development of the Scratchpad project over the next two years concludes this article.
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