In this paper we study the possibility of generalizing a monocriteria model to a multicriteria partition problem and show the reason why exact algorithms are not efficient in solving the problem. The mathematical model studied is a modified version of a mono-objective model from Mehrotra [1] and applied to the biobjetive case using the ε-constraint method. Research conducted concludes that the ...

This paper gives details of an algorithm whose purpose is to partition a set of populated zones into contiguous regions in order to minimise the di€erence in population size between the regions. The algorithm, known as SARA, uses simulated annealing and a new method for checking the contiguity of regions. It is the latter which allows the algorithm to be used to tackle large problems with modes...

This instructional design project examined whether an instructional design module, in the form of a video lesson in DVD format, could be an effective method of delivering consistent, anytime, anywhere instruction for a secondary automotive technology course. Design elements that were investigated included those derived from cognitive theories of multimedia learning, such as signaling, spatial c...

For text retrieval systems, the assumption that all data structures reside in main memory is increasingly common. In this context, we present a novel incremental inverted indexing algorithm for web-scale collections that directly constructs compressed postings lists in memory. Designing efficient in-memory algorithms requires understanding modern processor architectures: in this paper, we explo...

In 5 experiments, results showed that when participants are faced with materials embedding relations between both adjacent and nonadjacent elements, they learn exclusively the type of relations they had to actively process in order to meet the task demands, irrespective of the spatial contiguity of the paired elements. These results are consonant with current theories positing that attention is...

This study addresses the question of whether or not active learning can be taught online. There are many definitions of learning: It is the process and the sum total of acquiring knowledge, skills, attitudes, values, beliefs, and emotions. There is, however, a nuanced definition of active online learning, defined as methods by which learners actively participate in the learning process (e.g., o...

We examine violent conflict's spillover effects on food insecurity in Uganda, Ethiopia, and Malawi. Using a contiguity matrix weighted the distance between housing units data from Living Standard Measurement Survey, we find statistically significant effect of conflict security Ethiopia Uganda. Statistically indirect were negative within Malawi positive Ethiopia. Direct conflicts other covariate...