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Hardware-programmable optical networks

Science China(Information Sciences) 2016年第10期59卷 21-32页

作者： Shuangyi YAN Emilio HUGUES-SALAS Yanni OU Reza NEJABATI dimitra simeonidou High Performance Networks Group University of Bristol

For future multi-dimensional optical networks, vast network resources provided by space division multiplexing and wavelength division multiplexing technologies, require new network architectures to scale up current network functions. The huge switch-granularity range requires a more dynamic way to deploy network resources. In this paper, we proposed a hardware-programmable optical network which deploys network resources according to incoming traffic requests. The proposed network supports node function programmability and node architecture adaptability, which are critical for dynamic function and resources deployments. Architecture-onDemand based node architecture adapts node architectures and also enables network function programmability by incorporating with several flexible node functions. Other enabling technologies, such as ubiquitous power monitoring and dynamic optical power management, assures the programmable optical node work *** on all these technologies, we established a hardware-programmable optical network testbed. Several use cases were demonstrated successfully, such as dynamic power equalization and optical debugging. These work verified the feasibility of hardware-programmable optical network, which dynamically allocate network resources for service provision. The proposed hardware programmable optical network will lead to a better hardware utilization and provide a possible solution for the future multi-dimensional optical network.

关键词： optical networks flexibility network function programmability

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Software-Defined Optical Data Centre Networks

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China Communications 2015年第8期12卷 1-9页

作者： PENG Shuping GUO Bingli SHU Yi George Zervas Reza Nejabati dimitra simeonidou High Performance Networks Group University of Bristol

Based on the analysis of data centre(DC) traffic pattern, we introduced a holistic software-defined optical DC solution. Architecture-on-Demand based hybrid optical switched(OPS/OCS) data centre network(DCN) fabric is introduced, which is able to realise different inter-and intra-cluster configurations and dynamically support diverse traffic in the DC. The optical DCN is controlled and managed by a software-defined networking(SDN) enabled control plane to achieve high programmability. Moreover, virtual data centre(VDC) composition is developed as an application of such softwaredefined optical DC to create VDC slices for different tenants.

关键词： optical data centre (DC) software-defined networking (SDN) virtual data centre(VDC) virtualisation

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Phosphorus:Distributed Control Plane Approach for Photonic Grids

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China Communications 2011年第3期8卷 1-11页

作者： Eduard Escalona Georgios Zervas Reza Nejabati dimitra simeonidou High Performance Networks Group University of Essex

G2MPLS is a Network Control Plane(NCP) architecture that implements the concept of Grid Network Services(GNS) required for implementing photonic *** provides part of the functionalities related to the selection,co-allocation and maintenance of both Grid and network resources through a set of seamless procedures at the user-to-network and inter-domain boundaries.G2MPLS' main features and procedures are presented in this document,as well as the considerations to deploy it and facilitate its dissemination.

关键词： Photonic Grids Grid Network Service Network Control Plane GMPLS G2MPLS

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Autophagy and neurodegenerative disorders

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Neural Regeneration Research 2013年第24期8卷 2275-2283页

作者： Evangelia Kesidou Roza Lagoudaki Olga Touloumi Kyriaki-Nefeli Poulatsidou Constantina simeonidou Laboratory of Experimental Neurology and Neuroimmunology Second Department of Neurology AHEPA University Hospital Aristotle University of Thessaloniki Department of Experimental Physiology Medical School Aristotle University of Thessaloniki

Accumulation of aberrant proteins and inclusion bodies are hallmarks in most neurodegenerative diseases. Consequently, these aggregates within neurons lead to toxic effects, overproduction of reactive oxygen species and oxidative stress. Autophagy is a significant intracellular mechanism that removes damaged organelles and misfolded proteins in order to maintain cell homeostasis. Excessive or insufficient autophagic activity in neurons leads to altered homeostasis and influences their survival rate, causing neurodegeneration. The review article provides an update of the role of autophagic process in representative chronic and acute neurodegenerative disorders.

关键词： neural regeneration reviews oxidative stress autophagy autophagy-related genes apoptosis Parkinson's disease amyotrophic lateral sclerosis multiple sclerosis acute and chronic neurode-generation neuroregeneration

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