On the scalability of interdomain path computations

2014 ◽  
Author(s):  
Onur Ascigil ◽  
Kenneth L. Calvert ◽  
James N. Griffioen
Keyword(s):  
Path Computations

Fuzzy QoS Based OLSR Network

2013 ◽  
pp. 50-55
Author(s):  
G. Uma Maheswari
Keyword(s):  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Wireless Networks ◽  
Mobile Wireless ◽  
Fuzzy Logic Algorithm ◽  
Link State ◽  
Hoc Networks ◽  
Path Computations ◽  
Optimized Link State Routing

Quality-of-Service (QoS) routing protocol is developed for mobile Ad Hoc Networks. MANET is a self configuring network of mobile devices connected by wireless links. Each device in the MANET is free to move independently in any direction; therefore, it changes links to other devices frequently. The proposed QoS-based routing in the Optimized Link State Routing (OLSR) protocol relates bandwidth and delay using a fuzzy logic algorithm. The path computations are examined and the reason behind the selection of bandwidth and delay metrics is discussed. The performance of the protocol is investigated by simulation. The results in FQOLSR indicate an improvement in mobile wireless networks compared with the existing QOLSR system.

scholarly journals Shortest path computations in source-deplanarized graphs

1993 ◽  
Vol 47 (2) ◽  
pp. 71-75
Author(s):  
Greg N. Frederickson ◽  
Susanne E. Hambrusch ◽  
Hung-Yi Tu
Keyword(s):  
Shortest Path ◽  
Path Computations

Fuzzy QoS Based OLSR Network

2011 ◽  
Vol 3 (1) ◽  
pp. 50-55
Author(s):  
G. Uma Maheswari
Keyword(s):  
Ad Hoc ◽  
Mobile Wireless Networks ◽  
Mobile Wireless ◽  
Fuzzy Logic Algorithm ◽  
Link State ◽  
Hoc Networks ◽  
Path Computations ◽  
Optimized Link State Routing ◽  
Selection Of

Quality-of-Service (QoS) routing protocol is developed for mobile Ad Hoc Networks. MANET is a self configuring network of mobile devices connected by wireless links. Each device in the MANET is free to move independently in any direction; therefore, it changes links to other devices frequently. The proposed QoS-based routing in the Optimized Link State Routing (OLSR) protocol relates bandwidth and delay using a fuzzy logic algorithm. The path computations are examined and the reason behind the selection of bandwidth and delay metrics is discussed. The performance of the protocol is investigated by simulation. The results in FQOLSR indicate an improvement in mobile wireless networks compared with the existing QOLSR system.

scholarly journals The Effect of Modifying a CFD-AB Approach on Fish Passage through a Model Hydraulic Dam

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1776 ◽  
Author(s):  
Anvar Gilmanov ◽  
Daniel Zielinski ◽  
Vaughan Voller ◽  
Peter Sorensen
Keyword(s):  
Mississippi River ◽  
Computer Modelling ◽  
Fish Passage ◽  
Upstream Migration ◽  
Computational Domain ◽  
Time Step ◽  
Neighboring Node ◽  
Agent Based ◽  
Path Computations ◽  
Swimming Trajectories

The threat of invasive bigheaded carp swimming into the upper reaches of the Mississippi River (USA) demands new and effective approaches to block these species. To explore how navigational Lock and Dams (LDs) on the Mississippi River could be used to deter the upstream migration of invasive fish species, computer modelling that combined computational fluid dynamics (CFD) and agent-based (AB) fish passage model (CFD-AB model) could be used to hypothetically quantify the passage of bigheaded carp (Hypophthalmichthys spp.) through LDs. Agent-based fish (AB-fish) are always located on a node of the CFD mesh and move by selecting the neighboring node that minimizes fatigue. A possible limitation of this approach is that the AB-fish movement exhibits a dependence upon the CFD mesh. The proposed modified approach allows the AB-fish to occupy any point in the computational domain and to continually (within the size of the time step) update their minimum fatigue path. Computations in a simplified channel/dam structure show that the modified CFD-AB results are smoother swimming trajectories and increased estimates of fish passage when compared to the original CFD-AB model.

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