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Articles by Khalid Rashid
Total Records ( 8 ) for Khalid Rashid
  Muhammad Zaheer Aziz and Khalid Rashid
  A wide range of scientific areas requires calculation of trigonometric ratios like sine and cosine repeatedly in their computations. The calculation of these trigonometric ratios is implemented in the library functions of programming languages using Maclaurin`s series which is a processor hungry technique. This paper aims for introducing a method to calculate the trigonometric ratios in an efficient manner as compared to available technique. The proposed method of stroing the results of sine and cosine functions for all integer and fractonal angles into separate arrays. In order to calculate the sine or cosine value for a particular angle the integer part is considered as α and the fractional part as β. The trigonometric relations for Sin ( α + β ) and Cos (α + β) are used to combine the result of integer and fractional parts. The outcome of the new method was tested in terms of accuracy, storage space and efficiency using a program written in C++. It was found that the proposed method provides 100% accuracy, saves storage space, and is faster as compared to the existing methods.
  Muhammad Zaheer Aziz , Muhammad Fayez Aziz and Khalid Rashid
  Urdu being a widely spoken language of the world deserves a fair share on the internet. There are many web sites that show information in Urdu using images or character based display but dynamic internet applications accepting input in Urdu and displaying customized web pages are still hard to find. The fundamental requirement for Urdu-enabled web applications are the standard input controls that would work for Urdu in ordinary HTML documents as they do for English. This paper proposes an algorithm to convert the standard HTML input controls to work for Urdu as well. Some essential issues before the conversion process are also handled. These issues include display of Urdu inside input controls, dynamic association of keyboard buttons to Urdu alphabets and use of proper character coding scheme. The algorithm was successfully tested with standard server side scripts which displayed dynamic Urdu text generated by the code or retrieved through connected database.
  Haroon Muneer and Khalid Rashid
  Operating system performance is not improving at the same rate as the speed of the execution hardware. As a consequence Operating systems are not keeping up with the demands placed on them. Computational speed up due to the increase in processor clock frequency is reaching its limits as well. Chip Multiprocessors are now being investigated to harness the silicon resources now available due to process improvements in C hip manufacturing. This research presents the study into a specialized Chip Multiprocessor for Simultaneous execution of OS kernel and user Code. SPE or Simultaneous Process Execution Architecture allows for continuous execution of OS kernel and user processes.
  Muhammad Rashid and Khalid Rashid
  This study presents an analysis of the Shadow protocol, a type of peer-to-peer networking model that currently provides decentralized file-sharing capabilities to its users. The shadow protocol has been designed to be a more optimized version of the Gnutella protocol. Initially, the study explains the basics of the peer-to-peer networking and then compares the two types of this networking standard: centralized and decentralized. The shadow protocol is classified as a decentralized model. The Napster and Gnutella protocols are briefly described as well. A detailed description of the Shadow protocol is presented. And a discussion is provided which proves the Shadow protocol to be a more optimized version of the Gnutella protocol.
  Khurram Shahzad and Khalid Rashid
  In this study architectural framework of workflow management system for heterogeneous and distributed environment has been proposed which incorporates web-enabled independent interface for clients to execute workflows. Some of the drawbacks and limitations of the traditional approaches are discussed; then architecture of flexible and platform independent simple workflow management system has been presented which is based on Java and internet technologies. Workflow engine and clients are implemented in Java. Workflow models are stored in relational database and the workflow engine accesses these models using JDBC interface. Standard browsers are used as web based clients to access the workflow system via HTTP protocol.
  Muhammad Kamran Naseem , Sohail Iqbal and Khalid Rashid
  This study presents the idea of implementing strong code mobility in terms of platform independence, microprocessor architecture reliance and resource management. Proposed system establishes a shared connection with the resources and its surrounding environment based on distributed structured XML-based knowledge. The resources managed by the process are shared between the nodes, so that the developer can program in a centralized setting. The goal is to present a solution for strong code mobility for commonly used platforms.
  Nasir Rehan and Khalid Rashid
  Fingerprint identification system being the most developed and emphasized among the various practically employed biometric systems, has yet to make a long journey to prove its effectiveness in terms of speed and accuracy. Of various options for increasing systems efficiency, one may be the combination or fusion of various contemporary fingerprint identification systems. This study reveals the possibility for introducing a fingerprint identification system based on different fingerprint matching systems, working in close collaboration. Two different fingerprint representation schemes are evaluated and a merger point for the two is suggested.
  Khalid Mahmood , Imran Hameed , Khalid Rashid and Amir Qayyum
  Research on mobile ad hoc networks has been focused primarily on routing protocols, whereas security issues remained mostly unexplored. This paper focuses on security mechanisms and notably on the key management mechanisms. Our authentication protocol is inspired from Resurrecting Duckling policy with a novel diversity. We present a reliable solution for securing bank transactions. In our approach devices exchange a limited amount of public information over location-constrained channel, which will later allow them to complete key exchange over wireless link. After the exchange of public keys, our banking transactions will be secure. This approach does not require any public key infrastructure as is required in MANET. Moreover our approach is secure against passive attacks on location-limited channel and all kinds of wireless attacks on wireless link.
 
 
 
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