In the formal methods approach to software verification, we use logical formulae to model both the program and its intended specification, and, then, we apply (automated) reasoning techniques to demonstrate that the formulae satisfy a verification conjecture. One may either apply proving techniques, to provide a formal verification argument, or disproving techniques to falsify the verification ...

Smart cards are used in critical application areas. This means that their software should function correctly. Formal methods are indispensable in obtaining high quality systems. This paper presents a case study on the use of formal methods in specification-based, black-box testing of a smart card applet. The system under test is a simple electronic purse application running on a Java Card platf...

Universal logic applied to the real world is defeasible. Defeasible reasoning where inferences depend (informally) on implied conditions can be better understood when made formal and indeed needs to be formalised for implementation in computational systems of practical reasoning such as interconnections in globalised eBusiness. Semi-formal Aristotelian syllogisms are now expressed within modern...

We present a case study on the formal development of a non trivial (meta)theory in the Theory of Contexts using the Coq proof assistant. The methodology underlying the Theory of Contexts for reasoning on systems presented in HOAS is based on an axiomatic syntactic standpoint. We feel that one of the main advantages of this approach, is that it requires a very low logical overhead. The object sy...

In the exact propagator for finite temperature gluons the location of the transverse and longitudinal poles in the gluon propagator are unknown functions of wave vector: ωT (k) and ωL(k). The residues of the poles, also unknown, fix the normalization of the one gluon vector potential and thus of the field strength. The naive energy density ~ E · ~ D + ~ B · ~ H is not correct because of dispers...

Current research in therapies for restoring a functional form of sight to the blind includes interfacing electronic neurostimulators with some point of the visual pathway. This approach requires controlling a number of waveform parameters which might vary for every implanted patient and for every channel in an interface that may have hundred or thousands of electrodes. Therefore, the clinical, ...

The two mass model (2MM) as introduced by Ishizaka & Flanagan (1972) and simplified by Steinecke & Herzel (1995) describes many features of the vocal fold oscillation patterns [1,2]. Particularly, it was shown that a large variety of voice disorders may be explained by means of high-speed observations with subsequent interpretation by the 2MM. Laryngeal symmetry was identified as an important p...

By combining weighted distances and distances based on neighbourhood sequences, a new family of distance functions with potentially low rotational dependency is obtained. The basic theory for these distance functions, including functional form of the distance between two points, is presented for the face-centered cubic grid and the body-centered cubic grid. By minimizing an error function, the ...

Extrapolation methods for the solution of partial diierentialequations are commonly based on the existence of error expansions for the approximate solution. Implicit extrapolation, in the contrast, is based on applying extrapolation indirectly, by using it on quantities like the residual. In the context of multigrid methods, a special technique of this type is known as-extrapolation. For nite e...

We present a case study on the formal development of a non trivial (meta)theory in the Theory of Contexts using the Coq proof assistant. The methodology underlying the Theory of Contexts for reasoning on systems presented in HOAS is based on an axiomatic syntactic standpoint. We feel that one of the main advantages of this approach, is that it requires a very low logical overhead. The object lo...