Socialstream is a project of a new social network that is currently developed at the Carnegie Mellon University’s Human-Computer Interaction Institute. This project is sponsored by Google and it has to improve the shortcomings and to extend the functionalities of the Google’s social network Orkut. (more…)

What does make routing and communication in Ad Hoc Networks different from routing and communication in usual LANs, WANs etc.? The main peculiarities are the absence of wires, routers and any predefined infrastructure. The nodes communicate with each other over the air and this is a very unreliable medium. Because of reflection, diffraction, diffusion and other signal propogation properties the data exchanging by nodes is frequently lost. Besides the connections between nodes can break because the nodes move and this changes then the topology of the network. (more…)

First of all let’s give a definition of what a Mobile Ad Hoc Network is. It is a collection of mobile nodes, such devices as PDAs, mobile phones, laptops etc., that are connected over a wireless medium. There is no pre-existing communication infrastructure (no access points, no base stations) and the nodes can freely move and self-organize into a network topology. (more…)

It seems like the fate of my diploma thesis has cleared up at last. More then two months I was looking for the firm and for the project for my last step on the ladder of my study. Ad Hoc Networks excited me during all the years at the university. Quite unexpectedly I found out that our colleagues in Berlin at Fraunhofer FOKUS (Fraunhofer Institut for Open Communication Systems) do research on all the kinds of ad hoc networks. (more…)

Looking for the answer to this question I looked through numerous articles and blog postings. Nobody gives concrete numbers, like “250 words are ok and 260 are already too much”. At this point I should mention that I’m interested in a number of words that is comfortable to a human in general. (more…)

Friday is the last day of the week. In many firms where the workers are obligated to wear an official cloths like a suit, there exists a concept of a Casual Friday. On this day you may put on free time cloths like jeans and t-shirts. That was new for me to read out at yigg.de, that the same concept can be also applied to a blog. (more…)

On the corporative blog of a friend of mine I saw a link to a curious online resource. ProgrammableWeb is a website containing a kind of a directory for Mashups. For those readers who never head or don’t quite understand the meaning of this term, I give a brief explanation. A Mashup is a website that uses (more…)