In this paper we describe a framework in which the grounds for one argument’s defeat of another is itself subject to argumentation. Hence, given two conflicting arguments, each of which defeat the other, one can then determine the preferred defeat and hence the preferred argument. We then apply this nested argumentation to selection of an agent’s preferred ‘instrumental’ arguments, where each s...

Clique graphs of chordal and path graphs are characterized. A special class of graphs named expanded trees is discussed. It consists of a subclass of disk-Helly graphs. It is shown that the clique graph of every chordal (hence path) graph is an expanded tree. In addition, every expanded tree is the clique graph of some path (hence chordal) graph. Diierent characterizations of expanded trees are...

We consider the facility layout problem with machine capacities (and hence multiple machines of each type) and random demand. We develop a very efficient heuristic allowing us to find good solutions to the stochastic case whenever good solutions can be found for the corresponding deterministic problem with uncapacitated machines of the same dimension. Hence, this problem represents a case where...

It is of interest to study supergravity solutions preserving a nonminimal fraction of supersymmetries. A necessary condition for supersymmetry to be preserved is that the spacetime admits a Killing spinor and hence a null or timelike Killing vector. Spacetimes admitting a covariantly constant null vector (CCNV ), and hence a null Killing vector, belong to the Kundt class. We investigate the exi...

The paper presents chemical and nutritional information on the underutilised seeds of M. chrysanthum. Chemical analyses show that the seeds are not rich in lipids and hence have a low energy value. The seeds were found to be rich in some essential amino acids (especially lysine), macroelements (Na, K, Mg) and ascorbic acid. The antinutrient levels of tannin, phytic acid and hydrogen cyanide wer...

UTI may be Symptomatic or Asymptomatic (colonisation without symptoms or signs of infection), Uncomplicated where the urinary tract is structurally and neurologically normal, invading organisms will be high grade uropathogens, usually grown in pure culture and not very antibiotic resistant or Complicated where the urinary tract is structurally or neurologically abnormal, hence lower degree path...

The purpose of this paper is study the relationship between the categories of fuzzy multialgebras and crisp algebras. In this regards first we briefly study the categories of multialgebras and fuzzy multialgebras and then by using the fundamental relation of multialgebras we construct a functor from category of fuzzy multialgebras to the category of fuzzy algebras and hence. Hence it can be der...

We discuss the current status of a computational approach which allows to evaluate the dielectric matrix, and hence electronic excitations like optical properties, including local field and excitonic effects. We introduce a recent numerical development which greatly reduces the use of memory in such type of calculations, and hence eliminates one of the bottlenecks for the application to complex...

Proof. As the edges in GC represent causal relations, a path of length 0 (no edge) is not considered a causal relation, and existence of a directed path from a variable back to itself would contravene the causal DAG assumption, hence: irreflexive and acyclic (or, more accurate, asymmetric). Transitivity follows immediately, by concatenation, from the sequence 〈X, .., Y, .., Z〉, in which each no...

Correlations in fluids in nonequilibrium steady states are long range. Hence, finite-size effects have important consequences in the nonequilibrium thermodynamics of fluids. One consequence is that nonequilibrium temperature fluctuations induce nonequilibrium Casimir-like pressures proportional to the square of the temperature gradient. Hence, fluctuations cause a breakdown of the concept of lo...