Volume 4, Issue 1 (2008) | Journal of Computer Science

Provisioning QoS in Virtual Private Network using Dynamic Scheduling

R. Ravi — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.1.5

Active and programmable networks change the functionality of routers and switches by using VPN endpoints and active packets. The authors present a new packet scheduling scheme called active scheduling...

Incorporating Multiple Sources into AMTree Protocol

Ali M. Al-Sharafi — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.6.9

AMTree protocol is an active network based protocol that makes sending packets to receivers-after source migration-an efficient process. AMTree protocol was designed and tested for one mobile source s...

Modified Hill Cipher for a Large Block of Plaintext with Interlacing and Iteration

V. U.K. Sastry — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.15.20

In this research, we have developed a large block cipher by modifying the Hill cipher. In this, we have introduced interlacing of the binary bits of the plaintext as the primary concept leading to con...

Semantics of Lazy Evaluation using the Two-Level Grammar

Mahmoud A. AbouGhaly — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.21.29

We have formalized the semantics of lazy evaluation for the lambda calculus using the two-level grammar formalism. The resulting semantics enjoys several properties, e.g., there is a sharing in the re...

Miniature-Autopilot Evaluation System

Kamal Ali — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.30.35

This research describes a Hardware in the Loop Simulator (HILS) that was developed to enhance the quality of attitude data received from autopilots. The described system aided in adjusting the contrib...

Nimble Protein Sequence Alignment in Grid (NPSAG)

K. Somasundaram — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.36.41

In Bio-Informatics application, the analysis of protein sequence is a kind of computation driven science which has rapidly and quickly growing biological data. Also databases used in these application...

Dynamic Head Cluster Election Algorithm for Clustered Ad-Hoc Networks

Arwa Zabian — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.42.50

In distributed system, the concept of clustering consists on dividing the geographical area covered by a set of nodes into small zones. In mobile network, the clustering mechanism varied due to the mo...

Computation of a Single-phase Shell-Type Transformer Windings Forces Caused by Inrush and Short-circuit Currents

M. B.B. Sharifian — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.51.58

This research studies the forces on the windings of transformer due to inrush current. These forces are compared with the corresponding forces due to short-circuit of the windings. Two-dimensional fin...

A Tool for Testing of Inheritance Related Bugs in Object Oriented Software

B. G. Geetha — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.59.65

Object oriented software development different from traditional development products. In object oriented software polymorphism, inheritance, dynamic binding are the important features. An inheritance ...

Parallel Two-Dimensional Quicksort Algorithm (PTSA)

Hamed Al Rjoub — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.66.71

In this research, a Parallel Two-Dimensional Sorting Algorithm (PTSA) is presented that has better performance than the classical Quicksort, to sort a data vector of size n = r (rows) × c(columns). ...

Effective Load Metric and Efficient Initial Job Placement for Dynamic Load Balancing in Cluster

P. Sammulal — 2008-01-31

Journal of Computer Science, Published online: 31 January 2008; doi:10.3844/jcssp.2008.72.79

High performance clusters are being configured specially to give data centers that require extreme performance and the processing power they need. When the data is accessed across clusters the data la...