This article presents findings from five repertory grid interviews conducted in early 2001 to identify attributes of information as an asset. Repertory grid is a technique developed by George Kelly based on his theory of personal constructs. Personal construct theory (PCT) assumes that individuals are their own ‘personal scientists’ who mentally represent the world around them. The method was u...

Work is currently in progress on the following projects: What do experts/novices know about programming. T1 The objective here is to develop a plan-based theory of programming knowledge and to test it empirically with novice and expert programmers. We are also using this theory to study the bugs and misconceptions of novice programmers. Cognitively appropriate programming language constructs.’ ...

Like other constructivist approaches, Personal Construct Theory (PCT) views human activity as a meaning creating process. What human organisms do, is informed by the way they construe events, and in turn assign meaning to those events. Symptoms are a rare, but legitimate part of their activity. They challenge our everyday conceptions regarding human behaviour. From a personal construct perspect...

It is known that every class-regular symmetric μ,m -net is tactical. Also it is known that all μ,m nets with m 2 or μ 1 are tactical. In the work of Al-Kenani and Mavron 2003 , it is proved that every symmetric net with m 3 is tactical if and only if it is class regular. In this paper, we construct 2, 4 -net and show that it is class regular and therefore tactical. New necessary and sufficient ...

We use Chen iterated line integrals to construct a topological algebra Ap of separating functions on the Group of Loops LMp. Ap has an Hopf algebra structure which allows the construction of a group structure on its spectrum. We call this topological group, the group of generalized loops L̃Mp. Then we develope a Loop Calculus, based on the Endpoint and Area Derivative Operators, providing a rigo...

The open string with one-dimensional target space is formulated in terms of an SOS, or loop gas, model on a random surface. We solve an integral equation for the loop amplitude with Dirichlet and Neumann boundary conditions imposed on different pieces of its boundary. The result is used to calculate the mean values of order and disorder operators, to construct the string propagator and find its...

We construct a Legendrian 2-torus in the 1-jet space of S × R (or of R) from a loop of Legendrian knots in the 1-jet space of R. The differential graded algebra (DGA) for the Legendrian contact homology of the torus is explicitly computed in terms of the DGA of the knot and the monodromy operator of the loop. The contact homology of the torus is shown to depend only on the chain homotopy type o...

We develop a systematic approach to construct the one-loop N = 4 SYM effective action depending on both N = 2 vector multiplet and hypermultiplet background fields. Beginning with the formulation of N = 4 SYM theory in terms of N = 2 harmonic superfields, we construct the one-loop effective action using the covariant N = 2 harmonic supergraphs and calculate it in N = 2 harmonic superfield form ...

Following Kachru, Kumar and Silverstein, we construct a set of nonsupersymmetric Type II string models which have equal numbers of bosons and fermions at each mass level. The models are asymmetric Z2 ⊗ Z ′ 2 orbifolds. We demonstrate that this bose-fermi degeneracy feature implies that both the one-loop and the two-loop contributions to the cosmological constant vanish. We conjecture and give a...