296 research outputs found
Retention data
No full textRetention data used in publications in or submitted to Journal of Chromatography A with A. R. Horner as first author.
Retention data for ~ 100 compounds on a Waters BEH C-18 column in acidic acetonitrile/water mobile phases at phase ratio and temperatures giving a range of k for each compound about 1 - 100. These are in the CSV file "RetentionData". The compounds/solutes are identified by number. The correspondence between the number and the compound name is in "Compound List and Conditions". Enthalpies for the compounds and functional group counts are in FGEnthalpyData.xls
Horner Syndrome from a Pediatric Otolaryngology Perspective.
No full text© The Author(s) 2019. Introduction: Horner syndrome is described as the clinical triad of miosis, ptosis, and anhidrosis. In pediatric patients the condition may be congenital or acquired from neoplastic, infectious or traumatic conditions, including birth trauma. Most cases of pediatric Horner syndrome present first to a pediatric ophthalmologist however since the neural pathways involve the cervical sympathetic chain otolaryngologists should understand the pathophysiology to avoid delay in management of potentially malignant cases. Objectives: To aid otolaryngologists in recognizing and managing pediatric Horner syndrome by describing 3 unique cases from malignant, traumatic and/or congenital causes. Methods: Case report of 3 pediatric patients with Horner syndrome presenting to our pediatric otolaryngology department. Results: Case #1 is 5-month-old female with ptosis and a left level II 1.5 cm neck mass. Magnetic resonance imaging showed the mass displacing the common carotid artery and excisional biopsy revealed a poorly differentiated neuroblastoma. Case #2 is a 9-year-old female with anisocoria appearing after suffering a severe playground injury. Case #3 is a 3-year-old-male who developed ptosis and anisocoria following re-excision of a recurrent cervical lymphatic malformation. Conclusion: Pediatric Horner syndrome may be a benign finding that is easily overlooked but may reflect a serious underlying condition. Otolaryngologists should be aware of the pathophysiology and differential diagnosis, including malignant causes, to appropriately manage patients
Retention data
No full textRetention data used in publications in or submitted to Journal of Chromatography A with A. R. Horner as first author.
Retention data for ~ 100 compounds on a Waters BEH C-18 column in acidic acetonitrile/water mobile phases at phase ratio and temperatures giving a range of k for each compound about 1 - 100
Reshaping Professionalization: Response to Bruce Horner\u27s \u27Traditions and Professionalization: Reconceiving Work in Composition\u27
No full textAuthor responds to article Horner, Bruce. Traditions and Professionalization: Reconceiving Work in Composition. College Composition and Communication, Vol. 51, No. 3 (Feb., 2000), pp. 366-398. Available at: http://www.jstor.org/stable/35874
Longus Coli Inflammation as an Uncommon Cause of Horner\u27s Syndrome
No full textThe oculosympathetic pathway originates in the hypothalamus, descends through the brainstem, exits the cervicothoracic junction, ascends up and over the lung, and along the carotid to the sudomotor fibers of the face, the pupillary dilators, and muller\u27s muscle. Lesions at any point along this chain may cause ptosis, miosis, anhidrosis, classically known as Horner\u27s Syndrome. The longus colli are weak cervical flexor muscles which abut the ascending sympathetic ganglia. Here we present a case of nonspecific longus colli inflammation likely secondary to motor vehicle accident as an uncommon cause of Horner\u27s Syndrome. Longus colli injury during cervical spinal injury as well as a suspected paraspinal mass of the longus colli have both been previously reported. To the author\u27s knowledge, this is the first case of bilateral asymmetric longus colli inflammation causing Horner\u27s syndrome
Investigations with Monte Carlo Tree Search for finding better multivariate Horner schemes (abstract)
No full textAfter the defeat of the human chess World Champion in 1997, many researchers turned their attention to the oriental game of Go. The minimax approach, so successful in chess, did not work in Go. Instead, around 2006 a new method was developed: MCTS (Monte Carlo Tree Search). The success of MCTS in Go caused researchers to apply the method to other domains. In this article we report on experiments with MCTS for finding improved orderings for multivariate Horner schemes, a basic method for evaluating polynomials. We report on initial results that typically improve existing methods by a factor of two. In addition, we continue with an investigation into two parameters that guide the MCTS search. It will be interesting to see if these insights can be transferred to other domains
The Laurent–Horner method for validated evaluation of Chebyshev expansions
No full textWe develop a simple two-step algorithm for enclosing Chebyshev expansions whose cost is linear in terms of the polynomial degree. The algorithm first transforms the expansion from Chebyshev to the Laurent basis and then applies the interval Horner method. It outperforms the existing eigenvalue-based methods if the degree is high or the evaluation point is close to the boundaries of the domainJared L. Aurentz has received financial support through the Postdoctoral Junior Leader Fellowship Programme from “la Caixa” Banking Foundation. The second author was supported by the Iranian National Science Foundation (INSF) under grant No. 9801259
The Effect of Value Learning on Attentional ResourcesDuring Top-Down Processing: An ERP Study
No full textValue learning has been shown to modulate attention. The current study investigated which elements of value learning (Probability or valence) influence attention. The P3 ERP component was examined as an index of attentional resources allocated to these valued stimuli and also as an index of the speed of processing these stimuli. Novel images were given a positive or negative (valence) value with variable probabilities of outcome (probability) in a learning task. Once the associations between stimuli and their expected values were made, the same stimuli were incorporated into a perceptual discrimination task where prior value was irrelevant. During perceptual discrimination, there was no significant increase in P3 amplitude based on either the previously learned valence or probability of the stimuli. However, there was a significant reduction in P3 latency for stimuli previously associated with more probable outcomes regardless of the valence of those outcomes. These findings suggest that visual items highly probable of an outcome utilize fewer attentional resources, allowing them to be processed at a faster rate
ODDS Oregon needs assessment (ONA) third party analysis review report
No full textprepared for: Oregon Department of Human Services, Office of Developmental Disabilities Services ; prepared by: University Center for Excellence in Developmental Disabilities, Biostatistics and Design Program at Oregon Health & Science University ; authors: Willi Horner-Johnson, Ph.D., Priya Srikanth, M.P.H., Alison J. Martin, Ph.D., Rhonda Eppelsheimer, M.S.W.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Cu(I)-Catalyzed Tandem Reaction of Carbene Coupling and Horner–Wadsworth–Emmons Type Olefination: Access toward Enynes
No full textA novel
strategy to synthesize 1,3-enynes has been successfully
developed based on Cu(I)-catalyzed cross-coupling of α-diazo
phosphonates and alkynes with a subsequent Horner–Wadsworth–Emmons
(HWE) type reaction. This method provides straightforward access to
conjugated enynes with high efficiency, good stereoselectivity and
excellent functional group compatibility. Copper(I) carbene migratory
insertion plays a crucial role in this transformation
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