Computer Science Seminar Topics 2014
Bitcoin is a peer-to-peer decentralized digital currency. It differs from traditional, government-backed currencies in that there is no central issuer, and there are no middlemen involved for various transactions.The supply of Bitcoin is regulated not by a central bank, but by software. The original rationale behind Bitcoin was to create a type of electronic currency that was anonymous, secure and independent from governments or other central
authorities. While still a nascent currency, various organizations such as WikiLeaks, the Internet Archive and the Free Software Foundation accept donations in Bitcoin. Moreover, thousands of smaller merchants accept payment using
Bitcoin. Computers connected to the network (known as miners) aim to find the solution to a certain mathematical problem. If they successfully solve the problem, a new block is
created. The more powerful your system, the greater the chance that mining will produce a new block. As a result, there are individuals and groups that invest in computer equipment designed to mine more efficiently.
Lasers have been considered for space communications since their realization in 1960. However, it was soon recognized that, although the laser had potential for the transfer of data at extremely high rates, specific advancements were needed in component performance and systems engineering, particularly for space-qualified hardware.
Li-Fi is a label for wireless-communication systems using light as a carrier instead of traditional radio frequencies, as in Wi-Fi Li-Fi should not be confused with the more general term visible light communications (VLC), which is the use of the visible light portion of the electromagnetic spectrum to transmit information. The term Li-Fi was coined by Professor Harald Haas from the University of Edinburgh in the UK and pureVLC’s CSO, and refers to a type of VLC technology that delivers a networked, mobile, high-speed communication solution in a similar manner as Wi-Fi. Therefore, the fundamental pre-requisite for Li-Fi is a bi-directional link over the same medium.
zero-knowledge proof or zero-knowledge protocol is a method by which one party (the prover) can prove to another party (the verifier) that a given statement is true, without conveying any additional information apart from the fact that the statement is indeed true. For cases where the ability to prove the statement requires some secret information on the part of the prover, the definition implies that the verifier will not be able to prove the statement to anyone else. Notice that the notion only applies if the statement being proven is the fact that the prover has such knowledge