scholarly journals SLA-Aware Fine-Grained QoS Provisioning for Multi-Tenant Software-Defined Networks

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 159-170 ◽  
Author(s):  
Gaolei Li ◽  
Jun Wu ◽  
Jianhua Li ◽  
Zhenyu Zhou ◽  
Longhua Guo
2020 ◽  
Vol 107 ◽  
pp. 485-497
Author(s):  
Jianwei Hou ◽  
Minjian Zhang ◽  
Ziqi Zhang ◽  
Wenchang Shi ◽  
Bo Qin ◽  
...  

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Ran Xu ◽  
Weiqiang Zhang

With the popularization of distributed interactive applications (DIAs), for getting good interactive experience among participants, efficient and fair allocation of network resource should be considered. In software-defined networks, the presence of central controllers provides novel solution to deploy customizable routing for interactive applications, which allows fine-grained resource allocation for DIAs to achieve fairness among participants. But opportunities always come with challenges, the wide spread user locations often require distribution of controllers to meet the requirements of applications. Hence, the latency involved among participants is directly affected by the processing time of controllers. In this context, we address the DIAs’ fair resource provisioning problems on computing and links load with the objective of balancing the achievable request rate and fairness among multiple flows in SDN networks. We firstly formulate the problems as a combination of controller loading and routing optimization. Then, we propose proactive assignment controller algorithm based on deep learning and fairness path allocation algorithm to share the bottleneck links. Compared with the state-of-the-art greedy assignment algorithm and priority order allocating algorithm, the final result is proven to get better fairness on controller and link load among DIAs’ participants by trace driven simulation.


Author(s):  
Minjian Zhang ◽  
Jianwei Hou ◽  
Ziqi Zhang ◽  
Wenchang Shi ◽  
Bo Qin ◽  
...  

2020 ◽  
Vol 161 ◽  
pp. 99-108
Author(s):  
Wallas Froes ◽  
Lucas Santos ◽  
Leobino N. Sampaio ◽  
Magnos Martinello ◽  
Alextian Liberato ◽  
...  

Author(s):  
Durbadal Chattaraj ◽  
Basudeb Bera ◽  
Ashok Kumar Das ◽  
Joel J. P. C. Rodrigues ◽  
Young Ho Park

Author(s):  
Richard S. Chemock

One of the most common tasks in a typical analysis lab is the recording of images. Many analytical techniques (TEM, SEM, and metallography for example) produce images as their primary output. Until recently, the most common method of recording images was by using film. Current PS/2R systems offer very large capacity data storage devices and high resolution displays, making it practical to work with analytical images on PS/2s, thereby sidestepping the traditional film and darkroom steps. This change in operational mode offers many benefits: cost savings, throughput, archiving and searching capabilities as well as direct incorporation of the image data into reports.The conventional way to record images involves film, either sheet film (with its associated wet chemistry) for TEM or PolaroidR film for SEM and light microscopy. Although film is inconvenient, it does have the highest quality of all available image recording techniques. The fine grained film used for TEM has a resolution that would exceed a 4096x4096x16 bit digital image.


Author(s):  
Steven D. Toteda

Zirconia oxygen sensors, in such applications as power plants and automobiles, generally utilize platinum electrodes for the catalytic reaction of dissociating O2 at the surface. The microstructure of the platinum electrode defines the resulting electrical response. The electrode must be porous enough to allow the oxygen to reach the zirconia surface while still remaining electrically continuous. At low sintering temperatures, the platinum is highly porous and fine grained. The platinum particles sinter together as the firing temperatures are increased. As the sintering temperatures are raised even further, the surface of the platinum begins to facet with lower energy surfaces. These microstructural changes can be seen in Figures 1 and 2, but the goal of the work is to characterize the microstructure by its fractal dimension and then relate the fractal dimension to the electrical response. The sensors were fabricated from zirconia powder stabilized in the cubic phase with 8 mol% percent yttria. Each substrate was sintered for 14 hours at 1200°C. The resulting zirconia pellets, 13mm in diameter and 2mm in thickness, were roughly 97 to 98 percent of theoretical density. The Engelhard #6082 platinum paste was applied to the zirconia disks after they were mechanically polished ( diamond). The electrodes were then sintered at temperatures ranging from 600°C to 1000°C. Each sensor was tested to determine the impedance response from 1Hz to 5,000Hz. These frequencies correspond to the electrode at the test temperature of 600°C.


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