Introduction In the earlier journal we have discussed about the integration issues, management and user behavior issues of the four emerging technologies. This journal focuses more on the project management issues and cost management issues. A project is a specific task carried out by a group of people in order to full fill certain task and it has start date and end date. Every project has its purpose and life time.Project Management IssuesA report released by The Standish Group (CHAOS summary...
ABSTRACT Wireless LANs also called as WLANs or Wi-Fi have got a lot of appreciation in past couple of years. Almost every part of the world has become Wi-Fi as people are setting it up everywhere including Hotels, Institutions, Company offices, Restaurants, Shopping Malls, houses etc. The installation and configuration of WLANs has become so simple that people can do it without any pain and in quick time than their counterparts, Wired LANs. Because of growing popularity of WLANs the companies...
Cryptography is the science of using the mathematics to encrypt and decrypt data. Cryptography enables you to store sensitive information or transmit it across the insecure networks(like the internet) so that cannot be read by anyone except the intend recipient.NEED FOR NETWORK SECURITY:In the past, hackers were highly skilled programmers who understood the details of computer communications and how to exploit vulnerabilities. Today almost anyone can become a hacker by downloading tools from...
The role of computer system varies according to the functions it is used for. Consider about the different employees with various responsibilities. Identify the different official responsibilities or tasks which are being performed by those employees using their office computer systems. Assume that you are responsible in creating the system design specifications for new office computers. Provide system specifications for the identified employees and students' laboratory while considering...
Spectrum is already saturated. But it has been observed by the regulatory agencies that though spectrum is statically allocated to a service, it is not always in use. Cognitive radios have the intelligence, applying which they can transmit data opportunistically through the licensed frequency band when they are not under use by the primary user and thus the efficient use of frequency band can be possible. Spectrum sensing is the technique used by cognitive radio to determine the free frequency...
Iris Recognition is a method of biometrics authentication that uses pattern-recognition techniques based on high-resolution images of the iris of an individual's eyes. Iris recognition is composed of various stages which are locating and identifying the iris, feature extraction from the images and lastly, matching them from an image database. This report will discuss all of the stages of the iris recognition in detail. Besides that, various methods which is used for iris recognition such as...
The Internet Protocol (IP) is considered by some as the backbone of the global network among an endless combination of systems and transporting media [1]. Basically, the main function of IP is to transmit the data from the source to destination. As the figure** highlights, the data is sent in the form of packets, then all the packets are routed through a series of routers and multiple networks to reach the destination. In the Internet, each router takes autonomous decision on each received...
Cell phones and Personal Digital Assistants have become indispensable tools for todays highly mobile workforce. Small and relatively inexpensive, these devices can be used not only for voice calls, simple text messages, and Personal Information Management for example phone book, calender and notepad but also for many functions done at a desktop computer. The latter includes sending and receiving electronic mail, browsing the Web, storing and modifying documents, delivering presentations, and...
The Multiple Input Multiple Output MIMO technique improves the capacity of the wireless link when operating in a dense multipath scattering environment through the use of multiple antennas in both transmitter and receiver. Wavelet-based MIMO- Orthogonal frequency Division Multiplexing MIMIO-OFDM system can better combat narrowband interferences and more robust to Intercarrier Interference ICI than traditional FFT filters. A Low Density Parity Check LDPC coded Discrete Wavelet Packet Transform...
Direct Cosine Transformation can also be used to hide data. Jonathan et al mentioned in their paper that this is one of the main components in JPEG compression technique. They also gave the steps in which it works as follows: 1. First the image is split up into 8 x 8 squares. 2. Next each of these squares is transformed via a DCT, which outputs a multi-dimensional array of 63 coefficients. 3. A quantizer rounds each of these coefficients, which essentially is the compression stage as this is...