Yazar "Guler E." seçeneğine göre listele

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    Hallermann-Streiff syndrome with hemihypertrophy
    (2010) Dogan D.G.; Karabiber H.; Erhan M.D.; Garipardic M.; Davutoglu M.; Guler E.
    We report on a five year old girl with Hallermann-Streiff syndrome and hemihypertrophy. Hemihypertrophy does not appear to have ever been associated with Hallermann-Streiff syndrome.
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    Particle Swarm Optimization-Enhanced Virtual Multicast Trees Embedding in SDNs
    (Institute of Electrical and Electronics Engineers Inc., 2023) Guler E.; Ayaz F.; Karakus M.; Hanbay D.
    The truly innovative network virtualization technology allows for multi-tenancy, enabling different Virtual Network (VN) requests to share the same physical network. This is achievable because network services are no longer bound to the architecture of the lessor hardware. Virtual Network Embedding (VNE) is a multi-dimensional NP-Hard problem that maps VN entities such as virtual nodes and virtual links onto a shared Substrate Network (SN) while assuring the requested network resources (e.g., bandwidth, computing power, etc.). This research explores how to efficiently map VNs with one-to-many (multicast) interactions, in the form of Virtual Multicast Trees (VMTs), onto an SN in contrast to the VNE problem where one-to-one (unicast) communication is at focus. Thus, we propose a Virtual Multicast Tree Embedding (VMTE) enhanced by Particle Swarm Optimization framework, VMTE-PSO, to put VMTs on a shared SN. The VMTE-PSO aims to minimize the amount of network resource consumption (i.e., bandwidth) in the SN while simultaneously satisfying the computing demand of virtual nodes and minimizing the redundant substrate link usage. Extensive simulations reveal our algorithm outperforms the dynamic node ranking and traditional greedy-based VMTE approaches with respect to bandwidth consumption and redundant multicast transmission on NSFNET and USNET network topologies. © 2023 IEEE.
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    Urine xanthine oxidase and myeloperoxidase activity in pediatric urinary tract infections
    (2013) Davutoglu M.; Karabiber H.; Kurutas E.B.; Olgar S.; Guler E.; Atli Y.
    Objective: To investigate the relationships between urinary tract infection (UTI), and activity of antioxidant enzymes, xanthine oxidase (XO) and myeloperoxidase (MPO) in urine of children with UTI Design: Prospective observational study Setting: Department of Pediatrics, Kahramanmaras Sutcu Imam University, Faculty of Medicine, Turkey Subjects and Methods: A total of 115 random children admitted to our hospital for urinary symptoms, 61 girls and 54 boys, aged between 2 and 15 years (average 10 years) were included. Study subjects were divided into four groups: Group 1 consisted of 29 pyuria positive and urine culture negative children; Group 2 included 30 children with pyuria and positive urine culture; Group 3 included 26 pyuria negative and urine culture positive children and Group 4 included 30 with pyuria and negative urine culture. Measurement of urine XO and MPO activity were performed spectrophotometrically. Intervension: Urine samples Main Outcome Measures: Antioxidant enzyme activity levels in urine were examined in children with urinary tract infection. Results: Urinary XO activities in Group 2 were significantlyhigher compared with other groups (p < 0.001, p = 0.001 and p < 0.001, respectively). SignificantlydifferentMPOactivitieswere found between Group 1 and Group 2 (p = 0.007). However, no significantdifferencewasfoundbetweenGroup3 and 4. Conclusion: SignificantlyincreasedMPOandXOenzymeactivity was found in children with UTI. Measurement of MPO and XO activity may be useful in children with urinary symptoms to diagnose UTI, before obtaining a positive urine culture.