Software Simulation Tool for the Capacity Analysis of WiMAX Base Stations

2012 ◽  
Author(s):  
Yang-Han Lee ◽  
Hsien-Wei Tseng ◽  
Chih-Yuan Lo ◽  
Yih-Guang Jan ◽  
Hen-Wai Tsao ◽  
...  
Keyword(s):  
Base Stations ◽  
Capacity Analysis ◽  
Simulation Tool ◽  
Software Simulation

Energy Optimization at GSM Base Station Sites Located in Rural Areas

2012 ◽  
Vol 1 (3) ◽  
pp. 1-31 ◽  
Author(s):  
Vincent Anayochukwu Ani ◽  
Nzeako Anthony Ndubueze
Keyword(s):  
Rural Areas ◽  
Base Station ◽  
Base Stations ◽  
Software Simulation ◽  
Simulation Results ◽  
Energy Options ◽  
Total Impact ◽  
Geographical Locations ◽  
Station Site ◽  
Mobile Base

This paper explores the best energy options by which the choice of the most energy optimized solution for a given GSM Base Station Site and location in any rural area in Nigeria can be made. The patterns of load consumption by mobile base stations at various geographical locations in rural areas are studied and suitably modeled for optimization using HOMER software. Simulation results show the optimized energy options to be superior to conventional solutions whereby diesel generators are currently used to power GSM Base Station Sites around Nigeria. Total Net Present Cost (NPC) and total impact on the environment are used as indices for measuring the optimization level of each energy solution. The solution with the highest optimization value is considered to be the best energy option for that Base Station Site.

Numerical Methods for Tracking Interfaces With Surface Tension in 3-D Mold Filling Processes

2002 ◽  
Author(s):  
Matthew W. Williams ◽  
Doug Kothe ◽  
Deniece Korzekwa ◽  
Phil Tubesing
Keyword(s):  
Surface Tension ◽  
Weber Number ◽  
Three Dimensional ◽  
Surface Force ◽  
Qualitative Behavior ◽  
Force Model ◽  
Simulation Tool ◽  
Software Simulation ◽  
Number Problem ◽  
Asymmetric Top

Gravity-pour casting processes are simulated for both low and high Weber number flows. The validation problems examined are a symmetric side-fill problem and a more complex asymmetric top-fill problem with flow over and obstacle. A recently developed continuum surface force model was implemented within a transient three-dimensional software simulation tool and applied to the low Weber number problem. The resulting simulations are compared with experiments that were conducted in order to validate current and future gravity-pour casting simulations. The simulations are found to capture much of the qualitative behavior of the complex three-dimensional flows.

Influence of the Moving Bottleneck on the Traffic Flow on Expressway

2011 ◽  
Vol 97-98 ◽  
pp. 480-484 ◽  
Author(s):  
Qiao Ru Li ◽  
Yue Xiang Pan ◽  
Liang Chen ◽  
Chang Guang Cheng
Keyword(s):  
Traffic Flow ◽  
Wave Theory ◽  
Capacity Analysis ◽  
Kinematic Wave ◽  
Software Simulation ◽  
Low Speed ◽  
Traffic Capacity ◽  
Simulation Results

The mix rate of large trucks is extremely high on expressway in China. The influence of moving bottleneck on the traffic flow of the expressway is particularly serious. The moving bottleneck, formed due to the overtaking of the low-speed trucks, is analyzed with the kinematic wave theory and simulated by utilizing the VISSIM software. Simulation results indicate that increase of the traffic flow and the mix rate of trucks could aggravate the influence of the moving bottleneck on the traffic states, and decrease the speeds of cars significantly. This leads to the insufficient use of the expressway resources. The study result can contribute to the traffic capacity analysis of the expressway.

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