162,757 research outputs found

    Iterative Patching and the Asymmetric Traveling Salesman Problem

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    Although Branch and Bound (BnB) methods are among the most widely used techniques for solving hard problems, it is still a challenge to make these methods smarter. In this paper, we investigate iterative patching, a technique in which a fixed patching procedure is applied at each node of the BnB search tree for the Asymmetric Traveling Salesman Problem. Computational experiments show that iterative patching results in general in search trees that are smaller than the usual classical BnB trees, and that solution times are lower for usual random and sparse instances. Furthermore, it turns out that, on average, iterative patching with the Contract-or-Patch procedure of Glover, Gutin, Yeo and Zverovich (2001) and the Karp-Steele procedure are the fastest, and that ?iterative? Modified Karp-Steele patching generates the smallest search trees.

    Patching, J R, 420709

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/409709Surname: PATCHING. Given Name(s) or Initials: J R. Military Service Number or Last Known Location: 420709. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 50158.225344 Item: [2016.0049.41980] "Patching, J R, 420709

    Effectiveness of Patching in Correcting Refractive Errors in Cases with Anisometropic Amblyopia

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    Pur po se: To evaluate the effects of patching on refractive errors in patients with anisometropic amblyopia. Ma te ri al and Met hod: We evaluated retrospectively 81 cases (5-8 years old) which were applied patching treatment for unilateral anisometropic amblyopia between June 2005 and August 2009. Pre- and post-treatment visual acuities and stereopsis were evaluated and the cases were divided into 4 groups as hyperopia, hyperopic astigmatism, myopia, and myopic astigmatism. Re sults: Mean age was 6.8±0.1 (minimum-maximum: 5-8) years. Visual acuity was 0.57±0.07 log MAR in hyperopias (p=0.001), 0.74±0.07 logMAR (p=0.001) in hypermetropic astigmatisms, 0.1±0.02 log MAR (p=0.02) in myopias, and 0.62±0.08 logMAR (p=0.04) in myopic astigmatisms after treatment. Post-treatment stereoacuity was improved significantly, except for myopic astigmatism (p=0.1). Dis cus si on: Patching treatment in anisometropic amblyopia is safe and effective method in all refraction errors especially hyperopia. (Turk J Ophthalmol 2011; 41: 385-8

    [Report to Chief J. E. Curry, by an unknown author #1]

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    Report to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney

    [Report to Chief J. E. Curry, by an unknown author #2]

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    Report to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney

    Patching a patch : software updates using horizontal patching

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    This paper presents a method for optimizing software updates of consumer electronic devices running multiple applications with a common software component, called horizontal patching. Instead of using separate deltas for patching different applications, the method generates one delta from the other. Due to the large similarities between the deltas, this horizontal delta is small in size. Experimental results on two test sets, consisting of software updates for sensor networks and smart phones, show that significant improvements can be achieved. Between 27% and 84% data can be saved from transmission, depending on the type of applications and shared components

    Fixational eye movements abnormalities and rate of visual acuity and stereoacuity improvement with part time patching

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    Residual amblyopia is seen in 40% of amblyopic patients treated with part-time patching. Amblyopic patients with infantile onset strabismus or anisometropia can develop fusion maldevelopment nystagmus syndrome (FMNS). The purpose of this study was to understand the effects of presence of FMNS and clinical subtype of amblyopia on visual acuity and stereo-acuity improvement in children treated with part-time patching. Forty amblyopic children who had fixation eye movement recordings and at least 12 months of follow-up after initiating part-time patching were included. We classified amblyopic subjects per the fixational eye movements characteristics into those without any nystagmus, those with FMNS and patients with nystagmus without any structural anomalies that do not meet the criteria of FMNS or idiopathic infantile nystagmus. We also classified the patients per the clinical type of amblyopia. Patching was continued until amblyopia was resolved or no visual acuity improvement was noted at two consecutive visits. Children with anisometropic amblyopia and without FMNS have a faster improvement and plateaued sooner. Regression was only seen in patients with strabismic/mixed amblyopia particularly those with FMNS. Patients with FMNS had improvement in visual acuity but poor stereopsis with part-time patching and required longer duration of treatment

    Murder on the mountain: author talk with Peter J. Wosh

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    Author talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.

    Effect of transannular patching on outcome after repair of tetralogy of Fallot

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    Among 814 patients undergoing repair of tetralogy of Fallot with pulmonary stenosis between 1967 and May 1986, transannular patching in the current era was a weak risk factor for death early postoperatively (predicted 30-day mortality, 4\% with a transannular patch and 1.4\% without) and is not a risk factor for instantaneous risk of death late postoperatively (predicted 20-year survival including early death, 94\% with a transannular patch and 96.5\% without). Ninety-six percent of surviving patients were in New York Heart Association functional class I at last follow-up, and the slight decline in this percentage as the interval between operation and last follow-up lengthened could have been due to chance alone (p = 0.24) and was no different in patients with a transannular patch. Transannular patching was a risk factor for reoperation for pulmonary regurgitation late postoperatively, but only a 7\% incidence within 20 years is predicted when mild residual stenoses are beyond the patch: the incidence rises to about 20\% with important distal stenoses. Inferences from the study are relevant to the indications for transannular patching and insertion of allograft semilunar valves at the time of repair

    Mr. Melvin J. Collier, RWWL AUC, June 2011

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    This video is a conversation with Mr. Melvin J. Collier. Mr. Collier talks about his book, "From Mississippi to Africa: A Journey of Discovery". Daniel Le, AUC Woodruff Library, is the interviewer
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