________________________________________ 1.1 DISTRIBUTED COMPUTING Distributed computing is a field of computer science that studies distributed systems. A distributed system consists of multiple autonomous computers that communicate through a computer network. The computers interact with each other in order to achieve a common goal. A computer program that runs in a distributed system is called a distributed program, and distributed programming is the process of writing such programs. Distributed computing also refers to the use
utilization of computing powers. While scheduling policy dictates the ordering of jobs and requests when rescheduling is done. The task scheduling in a distributed systems differs from scheduling in a single multicore system as a distributed system contain many machines which have their own scheduling policies locally. Therefore there was a need for the distributed systems to have their own scheduling strategies on the top of local schedulers. In this section an insight of different grid scheduling
Introduction: Computers touch almost every aspect of our lives, performing critical functions in diverse areas including education and training, home and entertainment, medicine, and work. The Importance of computers in our lives makes human-computer interaction one of the most critical factors in systems design. One fundamental issue in human-computer interaction is that limitations exist on the communication between human and computer. That is, human-system interaction is still fundamentally bounded
Backbone of the organization One of the reasons why the quality of information system is important is because it became the backbone of the organization which supports business operations. Information system is a vital for management of business today. In many businesses, survival and the ability to achieve strategic business goals is difficult without extensive use of information technology. There are s reasons or objectives why businesses use information system. If the IT system falls short of
CHAPTER 1 INTRODUCTION 1.1 Cryptography The word cryptography is derived from the Greek words Cryptos meaning cover and grafia meaning writing [1] defining it as covered writing. In image cryptography the information is hidden exclusively in images. Cryptography is the art and science of secret communication .It is the practice of encoding/embedding secret information in a manner such that the existence of the information is invisible. The original files can be referred to as cover text, cover image
vision [6]. This is due to its numerous important applications in identity authentication, security access control, intelligent human-computer interaction, and automatic indexing of image and video databases. Face recognition has repeatedly shown its importance over the last ten years or so [2]. Nowadays, it is still a burning question to extract useful information from large amounts of surveillance information efficiently and accurately
CONTENTS 1 ANALYSIS OF EXISTING SOLUTIONS OF SOFTWARE SYSTEMS FOR INTEGRATED LIBRARY CATALOGUES 10 1.1 Analysis of functions of existing integrated library catalogues 10 1.1.1 Description of the European library 10 1.1.2 Description and functions of the British Library 11 1.1.3 Description of the Bodleian digital library Systems and service 12 1.2 Analysis of the state of the art web technologies 17 1.2.1 Description of web technologies 17 Advantages and disadvantages of web technologies 21 Description