12 research outputs found
Matching model of flow table for networked big data
Networking for big data has to be intelligent because it will adjust data
transmission requirements adaptively during data splitting and merging.
Software-defined networking (SDN) provides a workable and practical paradigm
for designing more efficient and flexible networks. Matching strategy in the
flow table of SDN switches is most crucial. In this paper, we use a
classification approach to analyze the structure of packets based on the
tuple-space lookup mechanism, and propose a matching model of the flow table in
SDN switches by classifying packets based on a set of fields, which is called
an F-OpenFlow. The experiment results show that the proposed F-OpenFlow
effectively improves the utilization rate and matching efficiency of the flow
table in SDN switches for networked big data.Comment: 14 pages, 6 figures, 2 table
Choice of Oral Anticoagulant: Outcomes in Atrial Fibrillation Patients Post-Stroke Despite Direct Oral Anticoagulant Use
Background: For patients with atrial fibrillation who have an ischemic stroke or transient ischemic attack (TIA) despite taking direct oral anticoagulants (DOACs), the optimal strategy for ongoing anticoagulation is unknown. Methods: Using provincial administrative databases in Alberta, Canada, we compared anticoagulant use before/after the breakthrough stroke/TIA and assessed recurrence of stroke/TIA or bleeding, with consideration of medication adherence. Adherence was defined as the proportion of days covered (PDC) being â„ 80%. Results: Among 985 patients, the median age was 80 years (interquartile range 13), with a mean CHADS2 score of 1.7± 1 prior to the index event. Patients were followed for a median of 643 days (interquartile range 836). Following the index stroke/TIA event, 623 patients (63%) filled a prescription for the same DOAC regimen, 83 (8%) filled a prescription for a different dose, 155 (16%) switched DOAC agents, 51 (5%) switched to warfarin, and 73 (7%) filled no oral anticoagulant prescription. Patients who kept the same regimen more commonly had TIA index events (59%); patients who changed dose or drug more often had stroke index events (55%-78%). During follow-up, 135 (14%) had stroke/TIA recurrence, and 46 (5%) had bleeding; rates of each did not differ between prescribing patterns. Post-index event, the proportion of patients with a proportion of days covered â„ 80% improved from 55% to 80%. Conclusions: Although most maintained the same DOAC regimen after stroke/TIA, rates of recurrent stroke/TIA and bleeding were similar across prescribing patterns. Stroke/TIA severity may have influenced prescribing practices. DOAC prescription adherence improved poststroke/TIA and signals an opportunity for optimization in patients with atrial fibrillation. RĂ©sumĂ©: Contexte: Chez les patients atteints de fibrillation auriculaire qui subissent un accident vasculaire cĂ©rĂ©bral (AVC) ischĂ©mique ou un accident ischĂ©mique transitoire (AIT) malgrĂ© la prise dâanticoagulants oraux directe (AOD), la stratĂ©gie optimale pour la poursuite de lâanticoagulation est inconnue. MĂ©thodologie: Ă partir des bases de donnĂ©es administratives provinciales en Alberta, au Canada, nous avons comparĂ© lâutilisation dâanticoagulants avant/aprĂšs lâAVC/AIT survenu pendant lâanticoagulothĂ©rapie et avons Ă©valuĂ© la rĂ©currence dâun AVC/AIT ou dâun saignement, en tenant compte de lâadhĂ©sion au traitement mĂ©dicamenteux. LâadhĂ©sion a Ă©tĂ© dĂ©finie comme une proportion de jours couverts (PJC) de 80 % ou plus. RĂ©sultats: Chez 985 patients, lâĂąge mĂ©dian Ă©tait de 80 ans (Ă©cart interquartile de 13) et le score CHADS2 moyen, de 1,7 ± 1 avant lâĂ©vĂ©nement de rĂ©fĂ©rence. Les patients ont Ă©tĂ© suivis pendant une mĂ©diane de 643 jours (Ă©cart interquartile de 836). AprĂšs lâAVC/AIT de rĂ©fĂ©rence, 623 patients (63 %) ont fait exĂ©cuter une ordonnance du mĂȘme schĂ©ma dâAOD, 83 (8 %) ont fait exĂ©cuter une ordonnance dâune dose diffĂ©rente, 155 (16 %) sont passĂ©s Ă dâautres AOD, 51 (5 %) sont passĂ©s Ă la warfarine et 73 (7 %) nâont fait exĂ©cuter aucune ordonnance dâanticoagulant oral. Chez les patients qui ont continuĂ© Ă recevoir le mĂȘme schĂ©ma, la plupart (59 %) avaient eu un AIT comme Ă©vĂ©nement de rĂ©fĂ©rence; chez les patients qui ont changĂ© de dose ou de mĂ©dicament, la plupart (55 Ă 78 %) avaient eu un AVC comme Ă©vĂ©nement de rĂ©fĂ©rence. Durant le suivi, 135 (14 %) ont connu un AVC/AIT rĂ©current et 46 (5 %) ont prĂ©sentĂ© un saignement; les taux de chaque manifestation ont Ă©tĂ© similaires pour les diffĂ©rents schĂ©mas de prescription. AprĂšs lâĂ©vĂ©nement de rĂ©fĂ©rence, le pourcentage de patients ayant une PJC â„ 80 % a augmentĂ©, passant de 55 Ă 80 %. Conclusions: MalgrĂ© le maintien du mĂȘme schĂ©ma dâAOD chez la plupart des patients aprĂšs lâAVC/AIT, les taux dâAVC/AIT rĂ©current et de saignement ont Ă©tĂ© similaires avec tous les schĂ©mas de prescription. La gravitĂ© dâun AVC/AIT pourrait avoir influencĂ© les pratiques de prescription. LâadhĂ©sion aux AOD prescrits sâest amĂ©liorĂ©e aprĂšs un AVC/AIT et tĂ©moigne dâune possibilitĂ© dâoptimisation chez les patients atteints de fibrillation auriculaire
Simulation-based optimization approach for simultaneous scheduling of vehicles and machines with processing time uncertainty in FMS
Influence of climate on tree mortality in taiwania (Taiwania cryptomerioides) stands in Taiwan
Hybrid multiobjective genetic algorithms for integrated dynamic scheduling and routing of jobs and automated-guided vehicle (AGV) in flexible manufacturing systems (FMS) environment
Conjugation of Benzylvanillin and Benzimidazole Structure Improves DNA Binding with Enhanced Antileukemic Properties
Edge computing in SDN-IoT networks: a systematic review of issues, challenges and solutions
The Philippines
The Philippines is a large archipelago of over 7000 islands, mostly lined by coral reefs, seagrass meadows, and mangrove forests, and surrounded by waters with variable currents driven by a reversing monsoon system. The islands have narrow coastal plains, north-south mountain ranges, active volcanoes, and high seismological activity. These elements, along with the countryâs complex geologic history and geographic position, make the Philippines one of the most biologically diverse, most disaster prone, and most environmentally threatened in the world. High dependence on coastal resources, overfishing and destructive fishing, and high rates of habitat loss make fishers in the country the poorest of the poor. The large population sizes and disproportionate impact of climate change here makes the poorâs situation worse. However, the country remains resource-rich, and its people have proven to be very resilient. More habitats are being protected and rehabilitated, and successful community-based fisheries management efforts are now being upscaled to higher governance levels. Although more conservation and management efforts are needed, there is much that could be learned from the Philippine experience. © 2019 Elsevier Ltd. All rights reserved