In this paper we present a new class of algorithms for detecting lines in digital images. The approach is based on a general formulation of a combinatorial optimization problem. It aims at estimating piecewise linear models. A linear system is constructed with the coordinates of all contour points in the image as coefficients and the line parameters as unknowns. The resulting linear system is t...

This paper considers the government's initiative to change the teaching of literacy in primary schools in England. It draws on evidence from a one-year ESRC funded project that observed teaching in the first year of the NLS and a two-year follow-up study that revisited and re-interviewed several of the teachers from the original study. It proposes that, although substantial changes have been ma...

Project DIAPLASIS (Greek Acronym for “Online Platform for School – Family Collaboration”) is a Doctoral Thesis aiming to develop an online system that allows collaboration between school and family, and to evaluate possible learning results in a two-year intervention with at-risk students. At least 9% of students in Cyprus are found to be at risk of failure in Language and Mathematics. Research...

This paper describes the process used to develop and implement an assessment plan from the ground up for a new Master of Information Systems program. The mapping of learning goals to objectives to specific courses is illustrated with direct and indirect measures. The program was first offered January 2008, and the second cohort of completed January, 2010. Assessment results from the first two c...

A power system operation at minimum cost is no longer the only criterion for electrical power dispatch. Combined economic emission dispatch problem is obtained by considering both the economy and emission objectives with required constraints. This problem can be solving optimization techniques. Many optimization techniques are slow for such complex optimization tasks and are not suitable for on...

We propose a modular approach to development of a computerized adaptive practice system for learning of facts in areas with widely varying prior knowledge: decomposing the system into estimation of prior knowledge, estimation of current knowledge, and selection of questions. We describe specific realization of the system for geography learning and use data from the developed system for evaluati...

Integrable equations in (1 + 1) dimensions have their own higher order integrable equations, like the KdV, mKdV and NLS hierarchies etc. In this paper we consider whether integrable equations in (2 + 1) dimensions have also the analogous hierarchies to those in (1 + 1) dimensions. Explicitly is discussed the Bogoyavlenskii-Schiff(BS) equation. For the BS hierarchy, there appears an ambiguity in...