scholarly journals Performance Evaluation of Photonic Networks under Dynamic Traffic Conditions

1999 ◽  
pp. 13-21
Author(s):  
Jan Späth ◽  
Stefan Bodamer
Keyword(s):  
Performance Evaluation ◽  
Dynamic Traffic ◽  
Photonic Networks ◽  
Traffic Conditions

Measuring spatiotemporal accessibility for pediatric clinical services with multimodal transport modes: an exploratory analysis in Nanjing, China

2020 ◽  
Author(s):  
Xinxin Zhou ◽  
LinWang Yuan ◽  
Changbin Wu ◽  
Zhaoyuan Yu ◽  
Lei Wang
Keyword(s):  
Healthcare Services ◽  
Spatiotemporal Variation ◽  
Distribution Data ◽  
Dynamic Traffic ◽  
Web Mapping ◽  
Traffic Conditions ◽  
Pediatric Clinic ◽  
Multimodal Transport ◽  
Variation Characteristics ◽  
Transport Modes

Abstract Background: Healthcare accessibility research is developing towards a focus on multimodal transport modes (MTM) and spatiotemporal variation. Dynamic traffic conditions lead residents to make distinct traveling decisions in different timepoints, which has an impact on the spatiotemporal accessibility of healthcare. Pediatric clinic services (PCS) are one of the typical healthcare services that require a diagnosis through a professional physician clinic.Results: This paper aims to examine a methodological framework for the spatiotemporal accessibility of PCS (STA-PCS) and obtains its spatiotemporal variation characteristics. We design a spatial time impedance of multimodal transport modes (STI-MTM) model, which considers residential transport mode choices and adopt a gravity model based on web mapping data and population spatial distribution data to measure STA-PCS. We selected Nanjing, China, as the study area to estimate the STA-PCS value at four timepoints. The results indicate that the spatial aggregate of PCS is evident, and dynamic traffic factors influence the volatility of STA-PCS.Conclusions: This work holds pragmatic implications for policymakers on the STA-PCS considered travel characteristics based on georeferenced social media data.

scholarly journals Performance Study of Multilayered Multistage Interconnection Networks under Hotspot Traffic Conditions

2010 ◽  
Vol 2010 ◽  
pp. 1-11 ◽  
Author(s):  
Dimitris Vasiliadis ◽  
George Rizos ◽  
Costas Vassilakis
Keyword(s):  
Performance Evaluation ◽  
Hot Spots ◽  
Interconnection Networks ◽  
Performance Study ◽  
Simulation Experiments ◽  
Multistage Interconnection Networks ◽  
Saturation Problem ◽  
Traffic Conditions

The performance of Multistage Interconnection Networks (MINs) under hotspot traffic, where some percentage of the traffic is targeted at single nodes, which are also called hot spots, is of crucial interest. The prioritizing of packets has already been proposed at previous works as alleviation to the tree saturation problem, leading to a scheme that natively supports 2-class priority traffic. In order to prevent hotspot traffic from degrading uniform traffic we expand previous studies by introducing multilayer Switching Elements (SEs) at last stages in an attempt to balance between MIN performance and cost. In this paper the performance evaluation of dual-priority, double-buffered, multilayer MINs under single hotspot setups is presented and analyzed using simulation experiments. The findings of this paper can be used by MIN designers to optimally configure their networks.

Performance Evaluation of Survivability Approaches in Optical Networks

2011 ◽  
pp. 134-157
Author(s):  
Abdelhamid Eshoul ◽  
Hussein T. Mouftah
Keyword(s):  
Performance Evaluation ◽  
Optical Networks ◽  
Mesh Networks ◽  
Performance Comparison ◽  
Dynamic Traffic ◽  
Performance Analyses ◽  
The Difference ◽  
A Performance

The chapter outlines the different survivability approaches for mesh networks under static and dynamic traffic environments. It describes the different solution options and their implementations. Also included are detailed performance analyses and evaluations for the difference survivability approaches under both traffic environments. Finally, we present a performance comparison between the different survivability approaches and end the chapter with some concluding remarks.

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