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The emergence of 5G wireless and IoT (Internet of Things) technologies, as well as the continuous evolution of cloud computing is driving the need for easy and on-demand creation of end-to-end network services. We have developed an integrated system called the end-to-end network service orchestrator, which realizes seamless service orchestration across multiple on-premises and cloud infrastructures...
We demonstrate an all-solid-state tunable Bragg filter with a phase transition material as the defect layer. Dynamic tunability and hysteresis properties of the Bragg filter promise more applications by combining phase transition materials and optical cavities.
A broadband silicon PSR is presented with an insertion loss lower than ∼0.7dB/0.3dB and crosstalk lower than 12.1dB/14.7dB for TE and TM mode respectively. By combining the PSR with AWG and Germanium PDs, an integrated polarization insensitive DWDM receiver is further demonstrated.
Distributed energy resources (DERs) include distributed generations (DGs), distributed energy storages (DESs), and the demand response resources (DRRs). With the increasing penetration of DERs in distribution network, more and more users change from power consumers to prosumers which have great influences on distribution network as well as generate new business models on the demand side. Based on...
Given the recent difficulty in continuing the classic CMOS manufacturing density and power scaling curves, also known as Moore's Law and Dennard Scaling, respectively, we find that modern complex system architectures are increasingly relying upon accelerators in order to optimize the placement of specific computational workloads. In addition, large-scale computing infrastructures utilized in HPC,...
Recently, CPU and graphics processors have been increasing the degree of on-chip parallelism in order to combat the decrease in traditional Moore's Law scaling. As a result, these new processors are increasing their appetite for faster memory devices with higher bandwidth. Component manufacturers have resorted to disparate or hierarchical fast memory device architectures such as shared local memory...
Influence maximization is a classic problem in Online Social Networks (OSNs) especially for viral markets. It has been proposed to help a company to select a set of seed users for promotion given a predefined budget (e.g., the set size k). The budget-making is of challenging due to the difficulty in trade off between profit and expense. Moreover, the current studies on influence maximization focus...
The study on development strategy mode of outdoor jacket in China will efficiently benefit the industrial transformation and strengthen the competitiveness of a company. In this paper, a comprehensive evaluation on the adverse factors of outdoor jacket industry is done. Then, using SWOT-APH method calculated the ranking of optimal strategy. Based on the calculation results and combine with characteristics...
Evolutionary algorithm hybridizing with A-means operation has been widely employed for data clustering. The A-means operation in this approach, however, is generally applied with a fixed number of iteration and at each generation (i.e., fixed intensity and frequency) during evolution, which could be far more than optimal. In this paper, we first introduce a generalized A-means usage framework, which...
A two-step method is proposed to compute the antenna array parameters for reducing excitation complexity of plane wave generator in this paper. Both the least squares method and genetic algorithm are combined to figure out the phase and position of each unit with selected amplitude. The validity of the method is confirmed by computer simulation and virtual experiments.
We showcase demonstrations of "program & compile" styled optical networking as well as open platforms & standards based NFV service provisioning using a proof-of-concept implementation of the Software-Programmed Networking Operating System (SPN OS).
We present the SPN OS, a Network-as-a-Service orchestration platform for NFV/SDN integrated service provisioning across multiple datacenters over packet/optical networks. Our prototype showcases template-driven service function chaining and high-level network programming-based optical networking.
We demonstrate the effectiveness of multi-channel, format-agnostic, all-optical wavelength converters (AO-WCs) in improving network utilization. Simulations show doubled network utilization with significantly fewer AO-WCs and experiments confirm successful multichannel conversions over full operating wavelength range.
We analyze the availability of virtual optical networks (VONs) mapped over a physical optical network with correlated failures, and we propose a correlated-failure-aware VON mapping algorithm to support high availability while reducing the penalty cost and total link cost.
Current frameworks for network programming assume that the network contains a collection of homogenous devices that can be rapidly reconfigured in response to changing policies and network conditions. Unfortunately, these assumptions are incompatible with the realities of modern networks, which contain legacy devices that offer diverse functionality and can only be reconfigured slowly. Additionally,...
In this paper, the distributed optimization problem is investigated under a second-order multi-agent system. In the proposed algorithm, each agent solves the optimization via local computation and information exchange with its neighbors through the communication topology. However, in comparison with the existing second-order distributed optimization algorithms, the proposed algorithm is much simpler...
Demand Response (DR) is an important technique to realize the reliable and economic operation of power system. As a key demand side resource, thermostatically controlled load (TCL) can be used through various demand side project to interact with power system for maintaining power system stability. In this paper, we propose the schedulable capacity forecasting (SCF) methods for thermostatically controlled...
With the rapid development of International Mobile Telecommunications (IMT), the demands of required bandwidths is increasing. In order to avoid the interference between different systems and to make full use of frequency spectrum resources, an enhancing requirement of channel measurement accuracy is attracting more and more people's attention. Building Penetration Loss (BPL) makes a great contribution...
The construction of university campus public information system is one of the basic units in the establishment of wisdom city, and it is the inevitable outcome of the information society evolved to the system integration stage. It provides a reasonable, efficient and humane modern quality service. This is conducive to the resources integration, sharing management and interactive applications, so as...
We have theoretically analyzed the excitation and propagation of surface plasmon polaritons on a planar interface between a homogeneous dielectric and a gradient negative permittivity material. This theory may lead to various applications, including “rainbow trapping”.
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