Performance Evaluation of Algorithms of Dynamic Rendezvous Point Relocation

The Protocol Independent Multicast - Sparse Mode (PIM-SM) uses one center (referred here as the Rendezvous Point “RP”) for all sources in a multicast group. PIM-SM distributes the multicast traffic of a source through a so-called shared distribution tree, whose root is at a predefined core called Rendezvous Point (RP). It also builds source-specific trees to the sources whose data rates exceed a defined threshold. In the literature, several investigations are done to improve and provide an efficient mechanism for the dynamic relocation of the RP depending on the sources or the members of the multicast group. In this paper, we extend the investigation of three search algorithms used to find the optimal RP position. To evaluate the performance of these algorithms, Estimated Tree Cost (ETC) and our improvement Enhanced Estimated Tree Cost (EETC), are used. The reason behind our choice these two methods is a comparative investigation of the RP-selection methods proposed in the literature. From the comparison we can see that ETC finds the most optimal position of the rendezvous point. The Hill-Climbing algorithm and the standard PIM-SM protocol with static RP-selection are used as a reference for comparison. Our algorithms result in a lower network load compared to RP-selection algorithm. However, they need additional control messages.

Development TCP Based on Adaptive Delay and Loss Response for Improving Satellite Networks Performance

In this paper, we propose modifications to TCP by introducing adaptive delay and loss response (TCP-ADaLR) to mitigate the adverse effects of satellite link characteristics.

Implementing Multi-Tiered E-commerce Applications and Assessing the Impact of the Different Techniques on Performance

Multitiered ecommerce applications are distributed applications where application logic is divided into components according to function. These components are installed on different machines, depending on the tier to which the application component belongs , additionally, these applications provide ecommerce services like online shopping

The impact of Human Resource Management Practices on the Employees performance Applied Study on jude company in lattakia ,Syria

This study aimed to investigate the impact of Human Resource Management Practices on the Employees performance in jude ҆s company ,these 7 Practices are (Planning, analysis and job design, polarization and recruitment, training, performance appraisal, motivation, participation in decision-making) and its impact on employees performance.

Comparison between AngularJS 1 and Angular 2 in the Implementation of the Presentation Layer of Multitiered Ecommerce Applications

This paper focuses on application built using the Java Platform, Enterprise Edition (Java EE). In this application, the business-tier is based on representational state transfer (RESTful) web services, and the presentation tier adopts Angular(x) framework.