Wireless Wide Area Networks (WAN) are a popular method of wirelessly accessing data over the Internet. A major concern for many corporate users of wireless WANs is data security and how to protect data that is transmitted over these wireless networks.

There are many features of these wireless networks, which provide user and data security. This paper discusses the security features for CDPD, CDMA, and GPRS networks, as well as an introduction to virtual private networks (VPN) and how these applications can be used to enhance the overall sec ....etc

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SEMIANR REPORT ON Giant Magnetoresistance Effect



ABSTRACT
The Giant Magnetoresistance Effect was discovered in 1988. It took around 10 years of laborious research for its first fruits to be ripened. But once they were on, they started to cause unprecedented increase in the storage capacity of hard disks. Another area of application is the primary memory. The seminar presents the details of this discovery and the impact it had on the industry. ....etc

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Imagine a computer whose memory is exponentially larger than its apparent physical size; a computer that can manipulate an exponential set of inputs simultaneously; a computer that computes in the twilight zone of Hilbert space. You would be thinking of a quantum computer. Relatively few and simple concepts from quantum mechanics are needed to make quantum computers a possibility. The subtlety has been in learning to manipulate these concepts. Is such a computer an inevitability or will it is too difficult to build?

The subject of quantum co ....etc

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Abstract
LEO is Low Earth Orbit satellite.It circulates on a lower orbit in a shorter period . Additionally LEO systems try to ensure a high elevation for every spot of the earth to provide a highquality communication page link . The networks will play an important role in the evolving information infrastructure . It provides communication with shorter endto- end delays and e_ciency frequency usages . Some problems need to be solved before LEO satellite system can be successfully deployed . One of these problems is handover management . Even ....etc

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SEMIANR REPORT ON MapReduce: Simplified Data Processing On Large Clusters

Abstract
In the new era of computing, instead of buying software for satisfying the computing needs of users, millions are rely on the Internet. Internet services are already significant forces in searching, retail purchases music downloads and auctions. But the web data sets are large and the computations have to be distributed across ....etc

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SEMIANR REPORT ON PROCESS RECOVERY IN HETEROGENEOUS SYSTEM

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Abstract

Heterogeneous computing environments, where computers may have different instruction set architectures, data representations, and operating systems, complicate checkpointing and recovery of processes. This paper describes an approach to recovery and an implementation, PREACHES, that provides portable checkpointing ....etc

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Free space optical communications is a line-of-sight (LOS) technology that transmits a modulated beam of visible or infrared light through the atmosphere for broadband communications. In a manner similar to fiber optical communications, free space optics uses a light emitting diode (LED) or laser (light amplification by stimulated emission of radiation) point source for data transmission. However, in free space optics, an energy beam is collimated and transmitted t ....etc

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SEMIANR REPORT ON Software Patents

ABSTRACt


Duopoly model that extends existing patent policy design models in the economics literature to formalize the links among the patent policy levers set by public policy (patent height and width), the strategic decisions made by firms (R&D investments, product development, product imitation, patent decision, and product pricing), the purchasing decisions made by consumers, and the market parameters. This integrated model enables policymakers to better analyze the impact of alternative patent pol ....etc

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Patterns, Symmetry and Symmetry Breaking

Software Design pattern capture tried and successful design solutions. Among different views on design patterns is that they are created to compensate for the design shortfalls in programming languages that is, design patterns are needed when programming languages cannot do the job in straightforward way. There is a casual relationship between language features and design patterns and that relationship is couched in a more fundamental relationship between symmetries and broken symmetries. This paper ....etc

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MPEG-4 is an ISO/IEC standard being developed by MPEG (Moving Picture Experts Group), the committee which also developed the Emmy Award winning standards known as MPEG-1 and MPEG-2. These standards made interactive video on CD-ROM and Digital Television possible. MPEG-4 will be the result of another international effort involving hundreds of researchers and engineers from all over the world. MPEG-4, whose formal ISO/IEC designation will be ISO/IEC 14496, is to be released in November 1998 and will be an International Standard in January 1999.
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