sybil attacks pose a serious threat for wireless sensor networks (wsn) security. they can create problems in routing, voting schemes, decision making, distributed storage and sensor re-programming. in a sybil attack,the attacker masquerades as multiple sensor identities, that are actually controlled by one or a few existing attacker nodes. sybil identities are fabricated out of stolen keys, obt...

The security of information systems focuses on raising the level of business security while aligning with its strategy and objectives. The family of ISO 2700x, whose theme is: Information technology Security techniques, allows taking into account all of these security problems, by offering a pack of uniform and standards that respect the continuous improvement cycle PDCA. Being closely linked t...

Let C be a threshold logic circuit computing a Boolean function MODm : {0, 1}n → {0, 1}, where n ≥ 1 and m ≥ 2. Then C outputs “0” if the number of “1”s in an input x ∈ {0, 1}n to C is a multiple of m and, otherwise, C outputs “1.” The function MOD2 is the so-called PARITY function, and MODn+1 is the OR function. Let s be the size of the circuit C, that is, C consists of s threshold gates, and ...

We analyze time-costly decision-making in committees by privately informed individuals, such as juries, panels, boards, etc. In the spirit of the Coase Conjecture, we show that the decision is ‘almost instantaneous’ when individuals entertain identical objectives. Delay can only be understood as the outcome of conflicting (biased) objectives.

This study initially employs multiple criteria decision making (MCDM) to evaluate and prioritise technological alternatives with the potential to fulfil the vision and objectives of one of the largest banks in Thailand. The study results reveal that the predominant preferred technology is data warehouse (i.e. a central source of data that has been extracted, standardised and integrated from var...