85 research outputs found

    On Kropina Change of m-th Root Finsler Metrics

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    In this paper, we consider Kropina change of mm-th root Finsler metrics. We find necessary and sufficient condition under which the Kropina change of an mm-th root Finsler metric be locally dually flat. Then we prove that the Kropina change of an mm-th root Finsler metric is locally projectively flat if and only if it is locally Minkowskian.Comment: accepted in Ukrainian Mathematical Journal Volume 66, number 1, 201

    On Kropina change for m-th root Finsler metrics

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    We study the Kropina change for m-th root Finsler metrics and establish necessary and sufficient condition under which the Kropina change of an m-th root Finsler metric is locally dually flat. Then we prove that the Kropina change of an m-th root Finsler metric is locally projectively flat if and only if it is locally Minkowskian.Розглянуто замшу Кропіної для m-кореневих фінслерових метрик. Встановлено необхідні та достатні умови того, що заміна Кропіної для m-кореневої метрики Фінслера є локально дуально плоскою. Також доведено, що заміна Кропіної для m-кореневої метрики Фінслера є локально проективно плоскою тоді i тільки тоді, коли вона є локально мінковською

    Disproportionate Correlation between Imaging and Outcome in an Infant with Cerebral Abscess

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    ObjectiveBrain abscesses represent organized foci of suppuration within the parenchyma. Here we report a 3 month-old girl with a very huge complicated cerebral abscess, and the course of treatment given. The patient's recovery was excellent. The follow up MRI showed only subtle porencephalic changes as the only parenchymal sequelae, which may be due to CNS plasticity in infants

    An Archived Multi Objective Simulated Annealing Method to Discover Biclusters in Microarray Data

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    With the advent of microarray technology it has been possible to measure thousands of expression values of genes in a single experiment. Analysis of large scale geonomics data, notably gene expression, has initially focused on clustering methods. Recently, biclustering techniques were proposed for revealing submatrices showing unique patterns. Biclustering or simultaneous clustering of both genes and conditions is challenging particularly for the analysis of high-dimensional gene expression data in information retrieval, knowledge discovery, and data mining. In biclustering of microarray data, several objectives have to be optimized simultaneously and often these objectives are in conflict with each other. A multi objective model is very suitable for solving this problem. Our method proposes a algorithm which is based on multi objective Simulated Annealing for discovering biclusters in gene expression data. Experimental result in bench mark data base present a significant improvement in overlap among biclusters and coverage of elements in gene expression and quality of biclusters

    Colour Fusion in Face Authentication System Based on Visible and Near Infrared Images

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    In this paper, face authentication using images taken in visible and near-infrared spectra (NIR) is studied. Visible images are in RGB colour space and near-infrared images are in gray levels colour space. First, the performance of system in each of the primary colour spaces of visible and near-infrared spectrum is evaluated that the verification process is based on the Normalised Correlation measure within the LDA feature space. In order to utilize the information of colour images, the scores associated to an adaptively selected subset of the colour based classifiers are then fused in the decision level. The selection process is based on a sequential search technique called the "plus L and take away R" algorithm. The sum rule and svm rule is used for fusing the related scores. Our extensive experimental studies using the HFB face database demonstrate that using the proposed method, the performance of the system considerably improves as compared to the individual Visible-based or NIR-based face verification systems

    The application of Ants' society algorithm for Management of resources in continuous bilateral auction

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    Background: The main purpose of this paper is to improve the efficiency of grid computing by means of Ants' society algorithm. Application of this algorithm in various problem led to an improvement in efficiency and reduction in processing time. This enables us to use this algorithm in grid computing. Economic solutions in the field of management of heterogeneous resources for grid computing showed significant performance. The main idea was economic solutions for product exchange in market. This paper aims to introduce a new method for bilateral auction scenario by means of genetic algorithm (GA). In this method, by making resources intelligent, we move the packages of call for proposal so that it can reduce response time as well as being able to supply resources with lower prices. For simplicity in controlling packages, we used the network structure in implementation. Applied structure includes routers and communication of users and auctioners and auctioners and resources owners. The method was implemented using GridSim simulator. This is an open source software written in Java programming language. Results reveal that the method of bilateral auction using GA reduces sale stages and consequently leads to faster responding to requests and also resources are supplied with a lower cost

    Investigation of LRTOMT gene (locus DFNB63) mutations in Iranian patients with autosomal recessive non-syndromic hearing loss.

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    Hearing loss (HL) is the most frequent sensory defect affecting 1 in 1000 neonates. This can occur due to genetic or environmental causes or both. The genetic causes are very heterogenous and over 100 loci have been identified to cause autosomal recessive non - syndromic hearing loss (ARNSHL). The aim of this study was to determine the contribution of the LRTOMT gene mutations in causing ARNSHL. One hundred fifty seven pupils affected with ARNSHL from Azarbaijan Sharghi, Kordestan, Gilan and Golestan provinces, north and west of Iran, were ascertained. In this descriptive - laboratory study, the presence of LRTOMT mutations were initially checked using PCR - Single - strand conformation polymorphism (SSCP) and heteroduplex analysis (HA) strategy. Samples with shifted bands on the gel were confirmed by DNA sequencing method. The PCR-SSCP/HA and the subsequent direct DNA sequencing showed no mutation in the population studied. We conclude that LRTOMT mutations have no role in causing sporadic deafness in the studied population. Further studies on other populations and samples could clarify the exact role of LRTOMT mutations
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