170,047 research outputs found

    Her Bright Smile Haunts Me Still

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    80.7568.485 – “Her Bright Smile Haunts Me Still”: W. T. Wrighton: J. E. Carpenter: John C. Schreiner & Son: n.d.: Voice Solo

    High frequency jet noise installation for an under wing mounted aircraft

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    This paper presents a generic 3-dimensional ray-theory based model to predict installation effects on a distributed jet source for aircraft with under-wing mounted engines. The model extends previous work by improving the hot jet blockage model from a 2-dimensional empirical model to a fully 3-dimensional semiempirical model. This new model is based on static rig test experiments described in this paper. Further improvements are made including variable directivity of the jet source (rather than an omni-directional assumption) which is important in predicting the correct reflection strengths for sources downstream from the nozzle. The directivity is determined both from analytic models and empirically using recently acquired data. The completed enhanced model is then validated using data acquired from a comprehensive novel set of installation tests carried out at QinetiQ’s Noise Test Facility

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    The Genome Resolved Open Watersheds database (GROWdb): A functional microbiome catalog crowdsourced from North American rivers

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    This repository contains data for version 1 of the Genome Resolved Open Watersheds database (GROWdb), along with data for the manuscript describing GROWdb: "A functional microbiome catalog crowdsourced from North American rivers" Mikayla A. Borton, Bridget B. McGivern, Kathryn R. Willi, Ben J. Woodcroft, Annika C. Mosier, Ted Bambakidis, Derick M. Singleton, Filipe Liu, Janaka N. Edirisinghe, José P. Faria, Rebecca A. Daly, Amy E. Goldman, Michael J. Wilkins, Ed K. Hall, Christa Pennacchio, Simon Roux, Emiley A. Eloe-Fadrosh, Matthew B. Sullivan, Christopher S. Henry, Elisha M. Wood-Charlson, Matthew R.V. Ross, Christopher S. Miller, Byron C. Crump, James C. Stegen, Kelly C. Wrighton Annotation datasets annotations.tsv.zip: raw DRAM annotations of 2,093 unique MAGs in GROWdb metabolism_summary.xlsx: DRAM distillate summary of genome annotations genes.fna.zip: nucleotide sequences of genes in 2,093 unique MAGs in GROWdb, with gene identifiers corresponding to those in annotations.tsv.zip Antibiotic resistance genes (ARGs) dataset ARGS_genes_rgi.txt: Output of Resistance Gene Identifier containing list of predicted ARGs AMR_expression_by_sample.csv: metatranscriptomic expression of identified ARGs by category Expression (Metatranscriptome) Data Tables GENES_geTMM_norm.counts.rpk_edger_zenodo.csv: geTMM values per gene filtered to genes in at least 10% of samples BINS_norm.counts.rpk_edger.mean_atLeast20_zenodo.csv: mean geTMM values per genome filtered to genes in at least 10% of samples and to bins with at least 20 genes expressed Phylogenetic Tree Files GROW_nxr/nar_tree.pdf: pdf format of phylogenetic tree of nxr and nar GROW_pmoA_amoA_tree.pdf: pdf format of phylogenetic tree of pmoA and amoA bipartitionsBranchLabels.nxr-nar_seqs_for_tree_aligned.faa_mode_low.renamed: newick format of phylogenetic tree of nxr and nar bipartitionsBranchLabels.amoA_pmoA_seqs_for_tree_aligned.faa_mode_low.renamed: newick format of phylogenetic tree of pmoA and amo

    Mitomycin C in highly myopic eyes - Author reply

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    Ophthalmology. 2005 Feb;112(2):208-18; discussion 219. Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes. Gambato C, Ghirlando A, Moretto E, Busato F, Midena E. SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy. Abstract PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes. DESIGN: Prospective, double-masked, randomized clinical trial. PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia. METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months). MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH. RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively). CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK. Comment in Ophthalmology. 2006 Feb;113(2):357; author reply 357-8

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    A Multi-Language Comparison of Influences on Author Verification using Character N-Grams

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    We create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc

    A 0.12mm<sup>2</sup> Wien-Bridge Temperature Sensor with 0.1°C (3σ) Inaccuracy from -40°C to 180°C

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    Resistor-based temperature sensors can achieve much higher resolution and energy efficiency than conventional BJT-based sensors [1], but they typically occupy more area (&gt; 0.25 mm 2 ) and have lower operating temperatures (le 125 {circ} {C}) [2]-[4]. This work describes a 0.12mm 2 resistor-based sensor that uses a Wien-bridge (WB) filter to achieve 0.1 {circ} {C} (3 sigma) inaccuracy from - 40 {circ} {C} to 180 {circ} {C}. Compared to a state-of-the-art WB sensor [4], it occupies 6 × less area and achieves comparable relative accuracy over a 76% wider operating range. Session 10.3 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic

    A ±25A Versatile Shunt-Based Current Sensor with 10kHz Bandwidth and ±0.25% Gain Error from -40°C to 85°C Using 2-Current Calibration

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    Accurate current sensing is critical in many industrial applications, such as battery management and motor control. Precise shunt-based current sensors have been reported with gain errors of less than 1% over the industrial temperature range (-40°C to 85°C) [1]–[4]. However, since they are intended for coulomb counting, their bandwidth is limited to a few tens of Hz, making them unsuitable for battery impedance or motor-current sensing. This paper presents a current sensor with a wide (10kHz) bandwidth and a tunable temperature compensation scheme (TCS), which allows it to be flexibly used with different types of shunts while maintaining high accuracy. A low-cost room-temperature calibration scheme is proposed to optimize gain flatness over temperature by exploiting the shunt's self-heating at large currents. Over the industrial temperature range and a ±25A current range, it achieves state-of-the-art gain error (±0.25%) with both low-cost PCB and stable metal-alloy shunts.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic
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