Stability is a common tool to verify the validity of sample based algorithms. In clustering it is widely used to tune the parameters of the algorithm, such as the number k of clusters. In spite of the popularity of stability in practical applications, there has been very little theoretical analysis of this notion. In this paper we provide a formal definition of stability and analyze some of its...

Given a topological space X and a complete lattice L, we study the space of L-predicates F L (X) = X ! L op ] op , continuous maps from X to L op in its Scott-topology. It yields a functor F L () from TOP-L, a full subcategory of TOP subsuming continuous domains, to SUP, the category of complete sup-lattices and maps preserving suprema. Elements of F 2 (X) are continuous predicates (= closed se...

We present a distinguishing attack against SOBER-128 with linear masking. We found a linear approximation which has a bias of 2−8.8 for the non-linear filter. The attack applies the observation made by Ekdahl and Johansson that there is a sequence of clocks for which the linear combination of some states vanishes. This linear dependency allows that the linear masking method can be applied. We a...

Stream ciphers are cryptographic primitives that ensure the confidentiality of communications. In this thesis, we study several attacks on stream ciphers. For practical applications, the candidates of stream ciphers of NESSIE and eSTREAM projects are scrutinized. Firstly, the algebraic attacks on SOBER-t32 and SOBER-t16 stream ciphers are performed under the assumption that the stuttering phase...

Previous research has demonstrated that adults with attention deficit/hyperactivity disorder (ADHD) are more likely to experience driving-related problems, which suggests that they may exhibit poorer driving performance. However, direct experimental evidence of this hypothesis is limited. The current study involved 2 experiments that evaluated driving performance in adults with ADHD in terms of...

The effects of ingesting ethanol have been shown to be somewhat variable in humans; there appear to be but few universals. Yet, questions about intoxication often are asked by law enforcement personnel (especially relative to DUI), clinicians and various individuals in social settings. A key question: Is it possible to determine if a person is intoxicated by observing them in some manner? A clo...


 The paper presents three different projections of the future number Sámi language users in Norway based on contemporary children receiving instruction Norwegian school system, either North, Lule or South Sámi. There exist curricula for subject Sámi, one first pupils (Sámi 1), second 2), and with no previous knowledge 3). Depending whether only 1 become users, also 2 even 3 do so, a sober...

The main purpose of this paper is a wide generalization one the results abstract algebraic geometry begins with, namely fact that prime spectrum $${\mathrm {Spec}}(R)$$ unital commutative ring R always spectral (= coherent) topological space. In generalization, which includes several other known ones, role ideals played by elements an complete lattice L equipped with binary multiplication $$xy\...

Roughly, psychological egoism is the thesis that all of a person's intentional actions are ultimately self-interested in some sense; psychological altruism is the thesis that some people's intentional actions are ultimately otherregarding in some sense. C. Daniel Batson and other social psychologists have argued that there are experiments that provide support for a theory called the ―empathy-al...