The goal of this paper is to investigate the basic principles of a tele-immersive system, its main components, development history, demonstrations and potential uses as one of today's most challenging technologies which takes all our knowledge of virtual reality, networks, haptics etc to the limits and beyond. Ultimately the paper presents a future research and development roadmap for this technology. Tele-immersion involves combining teleconferencing, tele-presence and virtual reality to allow individuals to manipulate a shared environment, converse, interact and even see each other. But the ultimate objective of tele-immersion is not solely to reproduce a real face-to-face meeting in detail, but also to provide the interface for collaborators, world-wide, to work together in a shared virtual environment, even though they may be miles apart physically. Tele-immersion stands at the crossroad of researches related to virtual reality and networking, computer visualization and user interfaces and can be said to unify all of these research areas. ...

This paper describes the Elliptic Curve Cryptography algorithm and its suitability for smart cards.

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1. INTRODUCTION Pervasive Computing integrates computation in the environment rather than computers which are distinct objects. Other terms for pervasive computing ubiquitous computing, calm technology, things that think and everyware. In other pervasive computing means computers everywhere, making them available the physical environment while making them effectively invisible to the user. having a desktop or a laptop machine, the technology pervasive computing embedded in the environment. Ubiquitous technology is often wireless, networked making its users more connected to the world around them and the it. Through pervasive computing, users use today's digital tools like laptops, phones, PDAs, smartphones to communicate and exchange information in different and conceive and use the geographical and temporal spaces differently. In being an aspect of information dissemination, pervasive or ubiquitous computing global and local, social and personal, invisible and visible at the same time. ...

Wordnet defines knowledge as the psychological result of perception, learning and reasoning [1]. Like mechanics is the study of the way matter and force interact with each other, knowledge mechanics refers to the study of intermingling between the two facets of knowledge- tacit and explicit. Tacit knowledge is personal knowledge which is difficult to express and communicate. On the other hand explicit knowledge has been or can be articulated, codified and stored in certain media. The transformation of knowledge among these two facets has been the main topic of study among the researchers. This paper also explores the temporal nature of knowledge i.e. how time relates to knowledge and the factors involved in the natural decay of knowledge.

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Smart spaces are ordinary environments equipped with visual and audio sensing systems, pervasive devices, sensors, and networks that can perceive and react to people, sense ongoing human activities and respond to them. Their ubiquity is evident by the fact that various state of the art smart spaces have been incorporated in all situations of our life. These smart space elements require middleware, standards and interfacing technologies to manage complex interactions between them. Here, we present an overview of the technologies integrated to build Smart Spaces, review the various scenarios in which Smart Spaces have been incorporated by researchers, highlight the requirements of software infrastructure for programming and networking them, and mention the contemporary frameworks for interaction with them. ...