International Journal of Computer Networks and Communications Security

Volume 3, Issue 11, November 2015

 

 

 

Network Congestion Avoidance Using Monte Carlo Sampling
Pages: 417-420 (4) | [Full Text] PDF (379 KB)
S Ullah, TA Khan, MA Siddique, AU Rehman
Department of Computer Science & IT, The Islamia University of Bahawalpur, Pakistan
College of Computer Science, COMSATS Institute of IT, Vehari, Pakistan

Abstract - In this paper we have study Monte Carlo Sampling (MCS) method and applying this method on heterogeneous network traffic on intranet. Resource management and admission control have been notified to bursty traffic. We have introduced new approach based on MCS to overcome network congestion. Simulation results shows that our proposed mechanism is better in terms of throughput, utilization and appropriate congestion window size while comparing with previous scheme based on fuzzy networks.
 
Index Terms - Monte Carlo Sampling, Packet Loss, Throughput, Congestion Window

Citation - S Ullah, TA Khan, MA Siddique, AU Rehman. "Network Congestion Avoidance Using Monte Carlo Sampling." International Journal of Computer Networks and Communications Security 3, no. 11 (2015): 417-420.
 

A New Method for Text Segmentation in Persian Based on Lexical Cohesion
Pages: 421-423 (3) | [Full Text] PDF (235 KB)
SMZ Shahraki, MA Dezfouli
Department of Computer, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Abstract - In this paper, we present a new segmentation algorithm based on Latent Semantic Analysis for segmentation of Persian texts. The presented algorithm is fully automatic, without training and based on lexical cohesion and it performs segmentation using semantic relationship between the blocks. Evaluation of results shows that our algorithm acts better than unsupervised Persiantiling segmentation method and F_measure with 70.97% had a significant improvement.
 
Index Terms - Latent Semantic Analysis, Text Segmentation In Persian, Unsupervised Algorithm, Untrained Segmentation, Persiantiling Algorithm, Evaluation Criteria

Citation - SMZ Shahraki, MA Dezfouli. "A New Method for Text Segmentation in Persian Based on Lexical Cohesion." International Journal of Computer Networks and Communications Security 3, no. 11 (2015): 421-423.
 

Deployment of VoIP Communications in B&A Spy Agency: Design and Implementation
Pages: 424-231 (8) | [Full Text] PDF (595 KB)
B Ahmad, SA Gilani, R Iqbal, H Sherazi, V Iranmanesh
Department of Computer Science and IT, Lahore Leads University, Lahore, Pakistan

Abstract - VoIP, Voice over Internet Protocol is one of the emerging and bleeding edge technologies that have in most cases sorted out the budget problems for the transmission and reception of voice communications. Indeed it is to use the Data Network infrastructure (Packet Switching Network) for the transmission and reception of voice calls. Though, people do prefer to use circuit switching network as it gives a dedicated path between end users that results in a crystal clear voice quality. Also the Digital communications “Modulation for the Transmitter end” and “Demodulation for the Receiving end” is involved (Digital Signal Processing to provide phenomenal voice quality) but no one can regret a fact that is; occasionally it becomes too expensive for the organization to provide dedicated paths to all employees. A promising solution is yes of course VoIP but the deployment of this technology introduces issues like Voice Quality, Jitter/ Delay, Quality of Service, Denial of Service etc. which is a challenge. In order to deploy VoIP communications in an existing Network it is very crucial and important to do proper planning and to analyze the network critically and justify whether it the Network is ready to cope with the VoIP services, as it can cause serious effects to the Network in case it is over burden. After doing that to assess and then evaluate by testing the network. This research is a case study based on B&A, A spy agency that has faced problems in the future regarding to call management and expansion. This research will cover the design and implementation of VoIP simulated in OPNET.
 
Index Terms - VoIP, Digital Signal Processing, Voice Quality, DoS, Quality of Service

Citation - B Ahmad, SA Gilani, R Iqbal, H Sherazi, V Iranmanesh. "Deployment of VoIP Communications in B&A Spy Agency: Design and Implementation." International Journal of Computer Networks and Communications Security 3, no. 11 (2015): 424-231.