4,214 research outputs found
A Family of Metrics from the Truncated Smoothing of Reeb Graphs
No full textIn this paper, we introduce an extension of smoothing on Reeb graphs, which we call truncated smoothing; this in turn allows us to define a new family of metrics which generalize the interleaving distance for Reeb graphs. Intuitively, we "chop off" parts near local minima and maxima during the course of smoothing, where the amount cut is controlled by a parameter τ. After formalizing truncation as a functor, we show that when applied after the smoothing functor, this prevents extensive expansion of the range of the function, and yields particularly nice properties (such as maintaining connectivity) when combined with smoothing for 0 ≤ τ ≤ 2ε, where ε is the smoothing parameter. Then, for the restriction of τ ∈ [0,ε], we have additional structure which we can take advantage of to construct a categorical flow for any choice of slope m ∈ [0,1]. Using the infrastructure built for a category with a flow, this then gives an interleaving distance for every m ∈ [0,1], which is a generalization of the original interleaving distance, which is the case m = 0. While the resulting metrics are not stable, we show that any pair of these for m, m' ∈ [0,1) are strongly equivalent metrics, which in turn gives stability of each metric up to a multiplicative constant. We conclude by discussing implications of this metric within the broader family of metrics for Reeb graphs
Sterling Houston Papers
No full textLetter from Park Chambers, Tim Doud, and Lawrence Steger of the School of the Art Institute of Chicago to Sterling Houston, prominent San Antonio playwright. They write to thank him for allowing them to house his documentation. It appears that Mr. Houston's contribution was helpful to an exhibition titled Private/Public. The School of the Art Institute played a seemingly large role in the exhibit as well
Qaisra Shahraz in Interview with Claire Chambers
No full textQaisra Shahraz is a popular and acclaimed Pakistan-born and Manchester-resident screenwriter, educationalist, novelist and short story author. She was recently recognised as number 1 out of the 50 most influential women in Manchester. Last year she won the National Diversity “Lifetime Achiever” Award for services to literature, education, women’s rights and interfaith relationships. She is a Fellow of the Royal Society of Arts, and advisor to Asia Pacific Writers & Translators partnerships. Her novels have been translated into many languages including Mandarin. In this interview, Claire Chambers discusses her new short story collection The Concubine and the Slave-Catcher in detail with Shahraz, as well as asking her to give readers a preview of her current work
Sadong 30: The Animistic Domestic in the Work of Heague Yang
No full textIn 2006 artist Haegue Yang installed a series of sculptural works in an
abandoned house in Incheon, South Korea. Yang produced and installed highly considered, and sympathetic artworks in response to, and in relation with, the temporal and material realities of this space. The dilapidated house had for many years prior to Yang’s installation, been home to the kinds of feral fauna and flora that inhabit the spaces vacated by humans. Yang did not attempt to eradicate the traces of these non-human dwellers but rather sought to illuminate their occupation and the temporality
inherent in the processes of decay, through carefully placed objects that led visitors from room to room in a manner that prompted humble contemplation. Building on Tim Ingold’s (2011) exploration of animacy as material reciprocity, this chapter analyses Sa-dong 30 as an artwork that through its object-to-object relationality subtly questions the nature of belonging (or not belonging)
Holding chambers (spacers) versus nebulisers for beta-agonist treatment of acute asthma
No full textBackground
In acute asthma inhaled beta₂-agonists are often administered by nebuliser to relieve bronchospasm, but some have argued that metered-dose inhalers with a holding chamber (spacer) can be equally effective. Nebulisers require a power source and need regular maintenance, and are more expensive in the community setting.
Objectives
To assess the effects of holding chambers (spacers) compared to nebulisers for the delivery of beta₂-agonists for acute asthma.
Search methods
We searched the Cochrane Airways Group Trial Register and reference lists of articles. We contacted the authors of studies to identify additional trials. Date of last search: February 2013.
Selection criteria
Randomised trials in adults and children (from two years of age) with asthma, where spacer beta₂-agonist delivery was compared with wet nebulisation.
Data collection and analysis
Two review authors independently applied study inclusion criteria (one review author for the first version of the review), extracted the data and assessed risks of bias. Missing data were obtained from the authors or estimated. Results are reported with 95% confidence intervals (CIs).
Main results
This review includes a total of 1897 children and 729 adults in 39 trials. Thirty-three trials were conducted in the emergency room and equivalent community settings, and six trials were on inpatients with acute asthma (207 children and 28 adults). The method of delivery of beta₂-agonist did not show a significant difference in hospital admission rates. In adults, the risk ratio (RR) of admission for spacer versus nebuliser was 0.94 (95% CI 0.61 to 1.43). The risk ratio for children was 0.71 (95% CI 0.47 to 1.08, moderate quality evidence). In children, length of stay in the emergency department was significantly shorter when the spacer was used. The mean duration in the emergency department for children given nebulised treatment was 103 minutes, and for children given treatment via spacers 33 minutes less (95% CI -43 to -24 minutes, moderate quality evidence). Length of stay in the emergency department for adults was similar for the two delivery methods. Peak flow and forced expiratory volume were also similar for the two delivery methods. Pulse rate was lower for spacer in children, mean difference -5% baseline (95% CI -8% to -2%, moderate quality evidence), as was the risk of developing tremor (RR 0.64; 95% CI 0.44 to 0.95, moderate quality evidence).
Authors' conclusions
Nebuliser delivery produced outcomes that were not significantly better than metered-dose inhalers delivered by spacer in adults or children, in trials where treatments were repeated and titrated to the response of the participant. Spacers may have some advantages compared to nebulisers for children with acute asthma
Letter From William Bell Scott to Mr Chambers
No full textabstract: Concerning Scott's thanks, his writings about his own works, and a manuscript of "The Nightingale Unheard."Seller's Description: Reads "A.L.S. from Author to Mr. Chambers explaining how busy he is... The sonnet is printed in the book. Fredeman: 56.7 £87.50"Handwritten Note: Unknown handwriting at top right reads "June 1st 1877."Publication Details: "The Nightingale Unheard" published in "Poems" by William Bell Scott.Creation Date Details: Undated range is the author's lifespan.Provenance: Removed from:
Poems / by William Bell Scott. Ballads, studies from nature, sonnets, etc. / illustrated by seventeen etchings by the author and L. Alma Tadema. Publisher London : Longmans, Green, 1875. CALL #
HAYDEN SPECIAL COLL SPEC PRB-13
Letter from M.L.A. Tom Chambers
No full textLetter from Tom Chambers (M.L.A. for Edmonton Calder Constituency) to Mr. John Birzgalis describing a monitary award of $1,000.00 from Horst A. Schmidt, Miniter of Culture toward's the Edmonton Latvian Society's Imanta.1.0 Imanta, 1.1.1 Histor of Imanta in Albert
Growing and Analyzing Biofilms in Flow Chambers
No full textThis unit describes the setup of flow chamber systems for the study of microbial biofilms, and methods for the analysis of structural biofilm formation. Use of flow chambers allows direct microscopic investigation of biofilm formation. The biofilms in flow chambers develop under hydrodynamic conditions, and the environment can be carefully controlled and easily changed. The protocols in this unit include construction of the flow chamber and the bubble trap, assembly and sterilization of the flow chamber system, inoculation of the flow chambers, running of the system, image capture and analysis, and disassembly and cleaning of the system. In addition, embedding and fluorescent in situ hybridization of flow chamber–grown biofilms are addressed. Curr. Protoc. Microbiol. 21:1B.2.1-1B.2.17. © 2011 by John Wiley & Sons, Inc
A treatise on civil architecture : in which the principles of that art are laid down, and illustrated by a great number of plates, accurately designed, and elegantly engraved by the best hands
No full textby William Chambers ..
sj-xlsx-2-hol-10.1177_09596836221074036 – Supplemental material for Evidence for the Little Ice Age in upland northwestern Europe: Multiproxy climate data from three blanket mires in northern England
No full textSupplemental material, sj-xlsx-2-hol-10.1177_09596836221074036 for Evidence for the Little Ice Age in upland northwestern Europe: Multiproxy climate data from three blanket mires in northern England by Julia C Webb, Julia McCarroll, Frank M Chambers and Tim Thom in The Holocene</p
- …
